Class / Patent application number | Description | Number of patent applications / Date published |
123435000 | Including cylinder pressure or temperature responsive means | 89 |
20080202469 | Method and apparatus for controlling a homogeneous charge compression ignition engine - The invention comprises a method for controlling operation of a homogeneous charge combustion ignition engine operating in an auto-ignition mode. The method comprises determining a desired combustion phasing; and, controlling a mass flowrate of externally recirculated exhaust gas based upon an actual combustion phasing. A closed-loop control scheme is executed to control the mass flowrate of externally recirculated exhaust gas based upon a difference between the actual and the desired combustion phasing. | 08-28-2008 |
20080264382 | Method and apparatus for determining a combustion parameter for an internal combustion engine - There is provided a method to determine a combustion parameter for an internal combustion engine. The method comprises monitoring cylinder pressure and crank angle during a combustion cycle, and determining a peak cylinder pressure, a crank angle location of the peak cylinder pressure, and a cylinder pressure at a closing of an intake valve. A combustion parameter is calculated based upon the peak cylinder pressure, the cylinder pressure at the closing of the intake valve for the combustion cycle, the crank angle location of the peak cylinder pressure, the cylinder volume at the location of the peak cylinder pressure, and the cylinder volume at the closing of the intake valve for the combustion cycle. The combustion parameter correlates to an instantaneous heat release of a cylinder charge for the combustion cycle. | 10-30-2008 |
20080271705 | Variable compression engine - A variable compression internal combustion engine having a compression that is variable via a compression relief valve (in addition to the intake and exhaust valves) that is precisely timed and controlled by a selectable timing hydraulic pump or other means and designed to relieve compression in the combustion chamber during a portion of the compression stroke of an engine. | 11-06-2008 |
20080289605 | ACTUATOR CONTROL APPARATUS - An actuator control apparatus is provided which has: an actuator provided in an internal combustion engine at a position distant from combustion chambers to change an engine state amount; a sensor that detects the actual operation position of the actuator; a controller that controls the actuator to bring the actual operation position to a target operation position set based on the engine operation state; a diagnosis portion that diagnoses the actuator to be in an abnormal state when the deviation of the actual operation position from the target operation position has been larger than a reference amount for a reference time; and a setting portion that sets, upon the diagnosis by the diagnosis portion, the reference time such that the lower the engine coolant temperature, the longer the reference time, and the lower the ambient temperature, the longer the reference time corresponding to the engine coolant temperature. | 11-27-2008 |
20080308067 | Method for ascertaining a quality characteristics of a diesel fuel - A method for ascertaining a quality characteristic of a Diesel fuel for a Diesel internal combustion engine, having a device for determining the cylinder pressure curve of at least one cylinder, a process variable of the combustion being ascertained from the cylinder pressure curve, which characterizes the fuel quality. | 12-18-2008 |
20090000595 | Control Apparatus And Control Method Of An Internal Combustion Engine - A control apparatus of an in-cylinder injection type spark ignition internal combustion engine provided with at least an in-cylinder fuel injection valve that injects fuel directly into a cylinder executes temperature increase promotion control that promotes an increase in temperature near a nozzle hole of the in-cylinder fuel injection valve when a detected temperature near the nozzle hole of the in-cylinder fuel injection valve is within a deposit forming temperature range. | 01-01-2009 |
20090095256 | Method and device for controlling an internal combustion engine - In order to control an internal combustion engine according to the invention, a polytropic exponent is determined in accordance with at least two measured values of the pressure in the combustion chamber of the cylinder, said measured values being detected after closing the gas discharge valve and before successively opening the gas intake valve. An exhaust gas mass which is located in the cylinder after closing the gas discharge valve and before successively opening the gas intake valve is determined according to the polytropic exponent at an estimated value of the pressure after closing the gas discharge valve and before successively opening the gas intake valve as well as at a certain temperature of the exhaust gas located in the cylinder after closing the gas discharge valve and before successively opening the gas intake valve. An actuation signal for controlling an actuating member of the internal combustion engine is generated in accordance with the determined exhaust gas mass. | 04-16-2009 |
20090151696 | Method for Regulating a Combustion Process of an Internal Combustion Engine with Exhaust-Gas Recirculation - In a method for regulating a combustion process of an internal combustion engine with exhaust-gas recirculation, which can be operated with a variable air/fuel ratio, and a fresh-air flow and a recirculated exhaust-gas flow, both the fresh air and the recirculated exhaust-gas flow are metered. The combustion process of an internal combustion engine with exhaust-gas recirculation is regulated, wherein the method makes precise determination of the exhaust-gas recirculating rate possible with a low fault tolerance. | 06-18-2009 |
20090151697 | Control System for Internal Combustion Engine - A control system for an internal combustion engine having at least one fuel injection valve for injecting fuel into a combustion chamber of the engine. A compression end temperature in the combustion chamber is estimated. A target compression end temperature is calculated according to an operating condition of the engine. A main injection and a plurality of pilot injections before the main injection are performed by at least one fuel injection valve. A fuel injection amount in a first-performed pilot injection of the plurality of pilot injections is controlled so that the estimated compression end temperature coincides with the target compression end temperature. | 06-18-2009 |
20090159046 | INTERNAL COMBUSTION ENGINE CONTROL APPARATUS - An internal combustion engine control apparatus includes an in-cylinder pressure sensor for detecting in-cylinder pressure. A combustion start time and combustion end time, which are parameters serving as control indexes for an internal combustion engine, are determined in accordance with ignition timing. Information about a heat release amount is acquired in accordance with the in-cylinder pressures that are measured at two points by the in-cylinder pressure sensor. The in-cylinder pressure is estimated in accordance with a relationship among the heat release amount information, control index parameters, and in-cylinder pressure. | 06-25-2009 |
20090159047 | CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - A control device | 06-25-2009 |
20090199819 | Digital Fuel Injector, Injection and Hydraulic Valve Actuation Module and Engine and High Pressure Pump Methods and Apparatus - Digital fuel injector, injection and hydraulic valve actuation module and engine and high pressure pump methods and apparatus primarily for diesel engines. The digital fuel injectors have a plurality of intensifier actuation pistons allowing a selection of up to seven intensified fuel pressures. The disclosed engine operating methods include using at least one cylinder for a compression cylinder for providing compressed intake air to at least one combustion cylinder. A pressure sensor in each combustion cylinder may be used to indicate temperature in the combustion cylinder to limit combustion temperatures to below temperatures at which substantial NO | 08-13-2009 |
20090211554 | Control Device for Engine - An engine comprises an intake control valve disposed in an intake passage at an upstream side of an intake valve in each cylinder for individually opening/closing the intake passage, an actuator for opening/closing the intake control valve, and a control device for controlling an operation of the actuator, wherein the control device controls the actuator to delay opening of the intake control valve in relation to opening of the intake valve, thus performing the supercharge. Supercharge correction is further performed for correcting operating timing of the actuator so that unbalance in a supercharge air quantity between the cylinders in the engine is suppressed. | 08-27-2009 |
20090301435 | Method and device for ascertaining one or more starts of combustion in a cylinder of an internal combustion engine from a provided cylinder-pressure curve - A method for determining a point in time of a start of combustion in a cylinder of an internal combustion engine includes: providing a base compression pressure model which gives a curve of a compression pressure in the cylinder as a function of the operating point; adjusting the base compression pressure model using measured cylinder pressures of at least one operating state of the internal combustion engine at points in time at which no combustion is taking place in the cylinder, in order to obtain an adjusted compression pressure model; and determining a point in time of a start of combustion with the aid of a pressure curve determined by the adjusted compression pressure model. | 12-10-2009 |
20100031924 | Method and system of transient control for homogeneous charge compression ignition (HCCI) engines - A HCCI engine with a model reference adaptive feedback control system maintains stable HCCI combustion during speed/load transitions by: (1) estimating the maximum rate of pressure rise (MRPR), for each cycle, from an extra-cylinder sensor metric, such as a crankshaft dynamics or knock sensor metric, via statistical vector-to-vector correlation; (2) periodically self-tuning the vector-to-vector correlation; (3) applying knowledge base models to guide cycle-to-cycle adjustments of fuel quantity and other engine parameters, to maintain a target MRPR value. | 02-11-2010 |
20100037861 | Method for Reducing Pollutant Emissions and Consumption of an Engine - A generally accepted and appropriate means to reduce pollutant emissions and consumption of passenger cars diesel engines is to apply multiple injection strategies. Assuming constant cylinder and bowl geometry and constant rail pressure the variation of the number of injections, injection quantity of each injection and separation between two consecutive injections are the major parameters which have to be optimised in order to fulfill both, the legislative emission limits and consumer requirements. A second, distinct approach to decrease pollutant emissions is to apply a single injection with a shaped injection rate. Ideally, rate shaping is achieved by a rise in injection pressure during one injection event, equal to that observed in cam controlled injection systems (e.g. Unit Injectors). For piezo driven common rail injection systems it might be possible to achieve similar effects by modifying the needle lift during an injection. The object of the present investigation is to compare and evaluate both methods in terms of pollutant emission, fuel consumption and robustness. For this purpose, experiments were carried out on single cylinder research engines. Multiple injection strategies with large hydraulic dwell times were compared with a short dwell setting simulating a “rate shaped” single injection. Rate shaping was implemented with a serial SIEMENS VDO piezo injector, performing multiple injections with hydraulic dwell times close to or equal zero. | 02-18-2010 |
20100043751 | ENGINE CONTROL USING CYLINDER PRESSURE DIFFERENTIAL - A combustion control system for a vehicle comprises a pressure ratio (PR) module, a pressure ratio difference (PRD) module, and a pressure ratio difference rate (PRDR) module. The PR module determines fired PR values and measured motored PR values based on cylinder pressures measured by a cylinder pressure sensor when a cylinder of an engine is fired and motored, respectively. The PRD module determines PRD values for predetermined crankshaft angles, wherein each of the PRD values is determined based on one of the fired PR values and one of the measured motored PR values at one of the predetermined crankshaft angles. The PRDR module determines and outputs a PRDR value based on a rate of change of the PRD values over a range of the predetermined crankshaft angles. | 02-25-2010 |
20100071660 | INTERNAL COMBUSTION ENGINE CONTROL APPARATUS AND METHOD - An internal combustion engine control apparatus executes an exhaust-valve-early-closing valve timing control in which an exhaust valve is closed before the intake stroke top dead center. The fuel injection timing mode is normally set to an intake-stroke non-synchronized fuel injection mode. However, if the internal combustion engine is idling and the combustion gas temperature is relatively high, the fuel injection timing mode is switched from the intake-stroke non-synchronized fuel injection mode to an intake-stroke synchronized fuel injection mode. | 03-25-2010 |
20100071661 | METHOD FOR FUEL INJECTION - A method for starting an internal combustion engine that is operated with a fuel mixture made of at least two types of fuel. An injection of the fuel into combustion chambers of the internal combustion engine occurs starting at a predefined pressure threshold of the fuel in a fuel supply according to a high-pressure starting mode, and also according to a low-pressure starting mode if the predefined pressure threshold is no longer met. The pressure threshold is selected as a function of the mixture ratio of the fuel types in the fuel mixture. In this way it can be achieved that differences can be taken into consideration in the optimal mixture formation of the fuel types. | 03-25-2010 |
20100077992 | Method for Detection of Abnormal Combustion for Internal Combustion Engines - A method for detection of abnormal combustion for internal combustion engines is disclosed. A physical model is chosen that describes, as a function of the angle a of rotation of the engine crankshaft, the development of pressure in the cylinder during combustion without any pre-ignition phenomenon. The cylinder pressure P | 04-01-2010 |
20100083937 | MULTIFUEL INTERNAL COMBUSTION ENGINE - A multifuel internal combustion engine in which single low boiling point component fuel and at least one kind of fuel having properties different from those of the single low boiling point component fuel are introduced into a combustion chamber CC separately or together thereby operating the multifuel internal combustion engine, includes lubricant-oil temperature detecting unit means (temperature sensor | 04-08-2010 |
20100089362 | METHOD TO CONTROL FUEL INJECTOR PULSEWIDTH IN A COMPRESSION-IGNITION ENGINE - A direct-injection, compression-ignition internal combustion engine control adapts nominal minimum pulsewidth parameters controlling the fuel injectors to minimize pilot fuel delivered to the cylinders required to initiate a preliminary combustion event. | 04-15-2010 |
20100089363 | CONTROL APPARATUS OF INTERNAL COMBUSTION ENGINE - An internal combustion engine ( | 04-15-2010 |
20100089364 | METHOD AND APPARATUS FOR AUTOMATIC PRESSURE BALANCING OF INDUSTRIAL LARGE-BORE INTERNAL COMBUSTION ENGINES - A method and apparatus for providing automatic pressure balancing of an internal combustion engine. The engine includes cylinders, fuel injector valves provided to selectively deliver fuel directly into the cylinders, fuel-balancing valves each fluidly connected to the fuel injector valves for controlling the fuel delivered to the fuel injector valves and cylinder pressure sensors each mounted to one of the cylinders. The method comprises an automatic pressure balancing procedure including the steps of monitoring a cylinder pressure in each of the cylinders, determining a peak combustion pressure produced in each of the cylinders, calculating a mean peak pressure produced in all of the cylinders, calculating a pressure difference between the mean and the peak pressure and incrementally adjusting the fuel delivered by one of the fuel-balancing valves to the corresponding fuel injector valve mounted to the cylinder having the pressure difference larger than a predetermined pressure value. | 04-15-2010 |
20100095933 | CONTROL DEVICE OF THE INTERNAL COMBUSTION ENGINE - A control device of an internal combustion engine that can accurately estimate an NOx concentration in exhaust gas by using a cylinder internal pressure as basic data. A cylinder internal pressure sensor provided to the internal combustion engine detects a cylinder internal pressure P | 04-22-2010 |
20100116249 | ENGINE CONTROL SYSTEM AND METHOD - A method of controlling an engine system, the method comprising: receiving data relating to engine operation; calculating in an engine model a combustion parameter and an injection parameter required to operate the engine system in accordance with the received engine data; controlling the engine system based on the calculated injection parameter wherein the method further comprises adjusting the engine model over time based on a comparison between the calculated engine combustion parameter and a corresponding measured engine combustion parameter | 05-13-2010 |
20100126465 | Engine control system having pressure-based timing - A control system for an engine having a first cylinder and a second cylinder is disclosed having a first engine valve movable to regulate a fluid flow of the first cylinder and a first actuator associated with the first engine valve. The control system also has a second engine valve movable to regulate a fluid flow of the second cylinder and a sensor configured to generate a signal indicative of a pressure within the first cylinder. The control system also has a controller that is in communication with the first actuator and the sensor. The controller is configured to compare the pressure within the first cylinder with a desired pressure and selectively regulate the first actuator to adjust a timing of the first engine valve independently of the timing of the second engine valve based on the comparison. | 05-27-2010 |
20100242912 | METHOD AND SYSTEM FOR DETECTING AND REDUCING ENGINE AUTO-IGNITION - A method and a control module for performing the same include a filter module filtering in-cylinder pressure signals using a filter to form filtered in-cylinder pressure signals. The control module further includes a heat release rate determination module generating heat release rate signals based on the in-cylinder pressure signals and a maximum heat rate determination module determining a maximum heat release rate from the heat release rate signals. The system also includes a correction module correcting auto-ignition for the engine based on the maximum heat release rate. | 09-30-2010 |
20100242913 | METHOD OF OPERATING A COMPRESSION IGNITION ENGINE - A method of operating a compression ignition engine, which includes at least one combustion chamber containing a piston, and a mechanically operated fuel injection pump apparatus. The method includes sensing the engine operating temperature with a first sensor, and providing input to a controller. The controller operates the fuel injection pump apparatus to deliver fuel to each of the combustion chambers according to a first timing regime when the engine operating temperature is above a threshold temperature, and according to a second, advanced timing, regime when the engine operating temperature is below the threshold temperature. The method further includes sensing the pressure in the combustion chambers with a second sensor. When the controller is operating the fuel injection pump apparatus according to the second timing regime and the combustion chamber pressure exceeds a desired pressure, the method includes changing operation from the second timing regime to the first timing regime. | 09-30-2010 |
20100300405 | Approach for Controlling a Vehicle Engine That Includes an Electric Boosting Device - A method of operating a vehicle including an engine is provided The engine may include at least one cylinder, a boosting device to boost intake air to the at least one cylinder, a fuel tank, a fuel vapor canister to store fuel vapors vented from the fuel tank, and an emission control device to treat exhaust gas from the engine. The boosting device includes a compressor at least partially driven by an electric motor. The method includes during an engine cold start condition, operating the electric motor of the boost device to boost intake air, directing the boosted intake air through the fuel vapor canister to release a fuel vapor stored in the fuel vapor canister, directing the fuel vapor from the fuel vapor canister to the engine, and performing combustion in the at least one cylinder using the fuel vapor during the engine starting. | 12-02-2010 |
20100307453 | METHOD AND SYSTEM FOR GENERATING AN IN-CYLINDER PRESSURE SENSOR SIGNAL - A method and a control module that includes a filter coefficient determination module that generates filter coefficients based upon an engine operating conditions. The control module includes a filter module that filters the in-cylinder pressure signal with a filter having the filter coefficients to form a filtered pressure signal and an engine control module that controls the engine using the filtered pressure signal. | 12-09-2010 |
20110017173 | ADJUSTMENT SYSTEM FOR BALANCING THE CYLINDERS OF A GAS-BURNING INTERNAL COMBUSTION ENGINE - The invention relates to balancing the cylinders of an internal combustion engine. The invention comprises cylinder-specific pressure sensors ( | 01-27-2011 |
20110023826 | SYSTEM FOR REGULATING PILOT FUEL SUPPLY IN A COMBUSTION ENGINE - The invention relates to supplying pilot fuel to the cylinders of a combustion engine. The invention comprises cylinder-specific pressure sensors ( | 02-03-2011 |
20110061629 | METHOD AND KIT FOR ENGINE EMISSION CONTROL - Methods and systems are provided for operating an engine including a first and a second bank of cylinders. One example method comprises, adjusting engine injection timing based on a first temperature of a first intake of the first bank and a second temperature of a second intake of the second bank. | 03-17-2011 |
20110083641 | SYSTEM AND METHOD FOR OPERATING A TURBOCHARGED ENGINE - A method includes substantially reducing specific fuel consumption and exhaust emissions of an engine by adjusting an exhaust flow from a set of predetermined cylinders among a plurality of cylinders of the engine through an exhaust gas recirculation system to an intake manifold, by adjusting a temperature of a cooler of the exhaust gas recirculation system, and by adjusting a fuel injection timing, in response to variance in a plurality of parameters of the engine. | 04-14-2011 |
20110083642 | METHOD AND DEVICE FOR CLOSED-LOOP COMBUSTION CONTROL FOR AN INTERNAL COMBUSTION ENGINE - A method for closed-loop combustion control within an internal combustion engine, that includes, but is not limited to individual calculation of actual Start of Combustion (SoC) information for all cylinders of said internal combustion engine using information from a combustion sensor applied to the engine, calculation of 50% Mass Fraction Burned (MFB50) and SoC information using cylinder pressure sensor information available from at least one leading cylinder of the engine, using pressure-based MFB50 information from the at least one leading cylinder to control it in closed loop, and using pressure-based SoC information from said at least one leading cylinder as a reference value for comparison with the combustion sensor based value of SoC from the same cylinder in order to calculate the desired SoC for the other cylinders of the engine which are then controlled relative to said at least one leading cylinder. | 04-14-2011 |
20110180038 | ENGINE CONTROL METHOD AND APPARATUS - An engine is designed to allow a compression self-ignition combustion under an air-fuel ratio leaner than a stoichiometric air-fuel ratio to be performed at least in a partial-load range of the engine. Under a condition that an engine speed varies at a same load in an engine operating region of the compression self-ignition combustion, a compression end temperature Tx, which is an in-cylinder temperature just before an air-fuel mixture self-ignites, is controlled to be raised higher in a higher engine speed side than in a lower engine speed side. As one example of control for the compression end temperature Tx, an internal EGR amount is controlled to be increased larger in the higher engine speed side than in the lower engine speed side, to raise a compression initial temperature T | 07-28-2011 |
20110265764 | METHOD FOR STARTING A MIXED FUEL ENGINE - A method for improving starting of an engine that may be operated with fuels having varying alcohol concentrations is presented. In one embodiment, the method adjusts a compression ratio of an engine in response to a number of combustion events after an engine stop and a concentration of alcohol in a fuel supplied to the engine. The method may make engine starting more repeatable at lower engine temperatures. | 11-03-2011 |
20110303190 | ABNORMALITY DETECTION DEVICE FOR IN-CYLINDER PRESSURE SENSOR, ABNORMALITY DETECTION METHOD FOR IN-CYLINDER PRESSURE SENSOR AND CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE - An object of the present invention is to provide an abnormality detection device for an in-cylinder pressure sensor and an abnormality detection method for an in-cylinder pressure sensor that is able to detect preload loss abnormality of an in-cylinder pressure sensor. An in-cylinder pressure sensor | 12-15-2011 |
20110315114 | SYSTEM AND METHOD FOR MEASURING ENGINE AIRFLOW - A control system for an engine includes a density determination module and a mass air flow (MAF) determination module. The density determination module determines a density of air in an induction system of the engine based on a temperature of the air, a pressure of the air, and a relative humidity of the air. The MAF determination module, based on the determined density of the air, a velocity of the air, and a cross-sectional area of the induction system, determines a MAF through the induction system. | 12-29-2011 |
20110315115 | Method for operating an internal combustion engine - A method for operating an internal combustion engine is described. At least one composition of a gas mixture is determined in at least one combustion chamber of the internal combustion engine. At least one combustion chamber pressure is detected in the interior of the combustion chamber and at least one local combustion chamber temperature is detected in the interior of the combustion chamber. The composition is inferred from the combustion chamber pressure and the combustion chamber temperature. | 12-29-2011 |
20120216777 | SYSTEM AND METHOD OF DETECTING HYDRAULIC START-OF-INJECTION - This disclosure provides system and method that can determine hydraulic start of injection (SOI) in engines using an in-cylinder pressure sensor. The system and method determine apparent heat release rate (AHRR) curve data for the cylinder from the pressure information provided by the in-cylinder pressure sensors, and the hydraulic SOI from the derivative of the AHRR curve data. The system and method provide diagnostic, control and/or compensation opportunities for fuel injector operation in high pressure fuel rail engine systems without use of expensive or complex fuel injector components. | 08-30-2012 |
20120227705 | COMBUSTION PRESSURE CONTROL SYSTEM - A combustion pressure control system of an internal combustion engine provided with a fluid sealing member | 09-13-2012 |
20120312277 | AUTO-IGNITION MITIGATION SYSTEM - An auto ignition mitigation system comprises a piston position module that determines a position of a piston within a cylinder and a temperature module that determines a first temperature of air within the cylinder. A fuel enrichment module communicates with the piston position module and the temperature module and determines a first fuel quantity based on the first temperature and the position of the piston. A fuel control module communicates with the fuel enrichment module and provides the first fuel quantity to the cylinder after the engine is started and before a first exhaust stroke of the piston. | 12-13-2012 |
20130000601 | ENGINE-LOAD MANAGEMENT TO REDUCE PARTICULATE EMISSIONS - A method for operating an engine of a vehicle. During a warm-up period following a cold start of the vehicle, a cylinder of the engine is charged to a reduced air-charge pressure, and fuel is injected into the cylinder. After the warm-up period, the cylinder is charged to a non-reduced air-charge pressure, greater for an equivalent driver demand than the reduced air-charge pressure, and fuel is injected into the cylinder. | 01-03-2013 |
20130087122 | GLOW PLUG HEATER CONTROL - Methods and systems for operating a glow plug are disclosed. In one example, current supplied to a glow plug can be controlled to promote combustion stability of a cylinder after an engine start. Engine feedgas hydrocarbons may be reduced during conditions where combustion stability may be otherwise reduced in order to reduce tailpipe emissions. | 04-11-2013 |
20130192561 | IGNITION DELAY PERIOD ESTIMATION APPARATUS AND IGNITION TIME CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE - A period of time from a point in time at which pilot injection is executed until an equivalence ratio in fuel spray, after exceeding a combustible equivalence ratio, falls below the combustible equivalence ratio is calculated as a physical ignition delay period. A chemical ignition delay period is calculated from the temperature and pressure inside a combustion chamber at a point in time at which the equivalence ratio in the fuel spray reached the combustible equivalence ratio. A total ignition delay period is calculated from the above-calculated ignition delay periods. The oxygen concentration and temperature inside the combustion chamber are adjusted such that the total ignition delay period matches a target ignition delay period. | 08-01-2013 |
20130206108 | Method and Control Unit for Controlling an Internal Combustion Engine - A method and control system are disclosed for controlling an internal combustion engine having fuel injector(s), a camshaft for actuating inlet and/or outlet valve(s), a valve-train adjusting device for controllable switchover between different valve actuating characteristics, and optionally a camshaft sensor which supplies a camshaft signal representing the camshaft angle, a crankshaft sensor which supplies a crankshaft signal representing the crankshaft angle, and a control unit which controls the fuel injectors to inject predetermined fuel quantities at predetermined injection instants, wherein these stipulations take place as a function of the switching state of the valve-train adjusting device. To obtain information about this switching state, cylinder pressure signal(s) supplied by a cylinder pressure sensor are evaluated with regard to interference signals, and the evaluation result is used in determining the switching state of the valve-train adjusting device for stipulating the fuel quantities to be injected and/or the injection instants. | 08-15-2013 |
20130213353 | TRANSIENT AIR FLOW CONTROL - Embodiments for controlling cylinder air flow are provided. In one example, a method for controlling airflow into a cylinder of an engine comprises, if a previous cylinder airflow is different than a desired cylinder airflow, allocating flow into an intake manifold between a throttle and an EGR valve to provide the desired cylinder airflow while maintaining a desired EGR amount in the cylinder. In this way, transient air flow requests may be met without delay while maintaining desired cylinder EGR amounts. | 08-22-2013 |
20130213354 | CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE - In an internal combustion engine having an in-cylinder pressure sensor provided on each cylinder, an in-cylinder pressure detection value is corrected into an absolute pressure using an absolute pressure correction value Pr by calculating the absolute pressure correction value Pr (=(P | 08-22-2013 |
20130276755 | AUTO-IGNITION INTERNAL COMBUSTION ENGINE WITH PARTIAL DEACTIVATION AND METHOD FOR THE OPERATION OF AN INTERNAL COMBUSTION ENGINE OF SAID TYPE - Methods and systems are provided for optimizing the operation of a multi-cylinder auto-ignition internal combustion engine. By configuring the cylinders in multiple groups based on compression ratios, and operating the cylinders in a load-dependent manner, fuel consumption may be optimized. | 10-24-2013 |
20130319372 | Internal Combustion Engine Having Piston Configured For Reduced Particulate Emissions, And Method - An internal combustion engine includes a housing having a cylinder bore defining a bore diameter of 260 mm or greater, a fuel injector coupled to the housing, and a crankshaft rotatably coupled to the housing. A piston is coupled to the crankshaft and movable to increase a fluid pressure within the cylinder bore to an autoignition pressure, and includes a combustion face defining a plurality of valve pockets in a compound combustion bowl. Spray orifices in the fuel injector define a spray angle greater than 145°, and the combustion bowl has a diameter from 190 mm to 230 mm such that combustion of injected fuel yields a BMEP of 1600 kPa or greater and 0.25 grams particulate matter or less per bkW·h energy output of the internal combustion engine. | 12-05-2013 |
20140000557 | METHOD AND SYSTEM FOR PRE-IGNITION CONTROL | 01-02-2014 |
20140034014 | SYSTEMS AND METHODS FOR CONTROLLING EXHAUST GAS RECIRCULATION - Various systems and method for controlling exhaust gas recirculation (EGR) in an internal combustion engine are provided. In one embodiment, a method includes injecting fuel to a subset of cylinders that includes less than all cylinders of a first cylinder group to obtain a target EGR rate. The first cylinder group provides exhaust gas through an exhaust gas recirculation (EGR) passage structure fluidly coupled between the first cylinder group and an intake passage structure. The method further includes injecting fuel to at least one cylinder of a second cylinder group. The second cylinder group provides substantially no exhaust gas through the EGR passage structure. | 02-06-2014 |
20140053811 | SYSTEM AND METHOD OF CONTROLLING COMBUSTION IN AN ENGINE HAVING AN IN-CYLINDER PRESSURE SENSOR - A control system for an internal combustion engine comprises pressure sensing means, memory means, processing means, and fuel injection control means. Pressure sensing means generate in-cylinder pressure data used to calculate total heat generated during combustion cycle. Memory means store predetermined crank angle data, such as CA50 crank angle data, for variety of engine operating conditions. A CA50 crank angle is a crank angle position where fifty percent of total heat is generated. Memory means | 02-27-2014 |
20140069383 | CONTROLLER FOR ENGINE - A bi-fuel engine is selectively operable in a first operation mode that uses liquid fuel and a second operation mode that uses gas fuel. A controller for the engine is configured to start a depressurizing process that supplies at least one of the cylinders with gas fuel as pressure of the gas fuel becomes greater than or equal to an initiation determination value when the engine is operating in the first operation mode. | 03-13-2014 |
20140109872 | PHEV Heating Modes to Provide Cabin Comfort - A vehicle is disclosed that has multiple coolant paths selected by control of a valve. A valve system is configured to direct coolant from an engine to a heat exchanger according to a difference between a temperature associated with the engine and a temperature associated with the heat exchanger. The valve system is also configured to direct coolant from the engine to an electric heater and to, in response to a heat demanded from the heat exchanger being greater than a heat capability of the electric heater, request the engine to run. A method is disclosed for controlling a valve to change from an isolation position in which the valve isolates coolant circulating through an electric heater and the valve from coolant circulating through an engine to a non-isolation position in which the valve directs coolant from the engine to the electric heater. | 04-24-2014 |
20140109873 | METHOD OF OPERATING AN INTERNAL COMBUSTION ENGINE - A method of operating an internal combustion engine, wherein the engine is operated in an injector learning mode in which an injection parameter associated with a nominal fuel quantity of a pilot injection is learned, includes performing a learning pilot injection based on a candidate value for the injection parameter to influence injection of the nominal fuel quantity and determining a parameter indicative of the actually injected fuel quantity based on the in-cylinder pressure during combustion of the learning pilot injection. The learning pilot injection is operated at an early timing such that combustion thereof complete occurs within a learning window positioned before combustion TDC and before the next combustion starts. The pressure is measured over the learning window, so that the determination of the parameter indicative of the actually injected fuel quantity takes into account essentially the entire combustion event of the learning pilot injection. | 04-24-2014 |
20140116385 | DEVICE AND METHOD FOR DETERMINING AND CONTROLLING COMBUSTION MISFIRE OF VEHICLE ENGINE - A method of determining and controlling misfire in an engine. The method and device sense combustion pressure in a combustion chamber of an engine while the engine is operated; calculate MFB (a ratio of the amount of combustion heat at a specific point of time to the total amount of combustion heat), MFB50 (a point of time at which the amount of combustion heat is 50% of the total amount of combustion heat), MFB50 COV (Coefficient of Variation), IMEP (Indicated Mean Effective Pressure) and IMEP COV, from the combustion chamber; set a desired MFB50; and determine that there is misfire when a crank angle is delayed at 5 degrees or more, the MFB50 COV is 20% or more, or the IMEP COV is 20% or more, by comparing the calculated MFB50 with the desired MFB50; and then advance an injection time such that the MFB follows the desired MFB. | 05-01-2014 |
20140123943 | ENGINE AIR TO FUEL RATIO CYLINDER IMBALANCE DIAGNOSTIC - A diagnostic for identifying cylinder to cylinder air/fuel ratio faults of an engine having closed loop fuel control. Air mass flow is accumulated for a plurality of load bands on the engine load/speed map, and for each load band a rich/lean air fuel ratio is determined at a mass threshold. This threshold data is processed and compared with fixed data to determine whether any cylinder of an engine is experiencing an air/fuel ratio fault which is substantially different to the remainder. | 05-08-2014 |
20140230789 | Module For Managing Mass Flow And Dampening Pressure Pulsations In A Gaseous Fuel Supply Line - A module for managing mass flow and dampening pressure pulsations in the supply line of a gaseous fuelled internal combustion engine comprises a hollow body defining an expanded volume that is fluidly connected directly to a pressure sensor and a temperature sensor. The module is placed along the supply line of a gaseous fuel engine between a fuel pressure increasing device and the fuel rail that supplies fuel to the engine. The module can comprise a filter that filters the impurities from the gaseous fuel supplied to the engine and an overpressure protection device that can vent some of the gaseous fuel from the module to protect it from over-pressurization. | 08-21-2014 |
20140251272 | HYDRAULIC START-OF-INJECTION DETECTING SYSTEM AND METHOD - This disclosure provides system and method that can determine hydraulic start of injection (SOI) in engines using an in-cylinder pressure sensor. The system and method iteratively perform a wavelet transform on a signal based on the pressure information provided by the in-cylinder pressure sensors to determine a detail coefficient corresponding to a frequency band containing frequencies of pressure pulsations excited from a fuel jet injected into the cylinder. Hydraulic SOI is determined at the timing when the amplitude of the determined detail coefficient satisfies a predetermined threshold. The system and method provide diagnostic, control, and/or compensation opportunities for fuel injector operation in high pressure fuel rail engine systems without use of expensive or complex fuel injector components. | 09-11-2014 |
20140251273 | OIL PUMP CONTROL SYSTEMS AND METHODS FOR NOISE MINIMIZATION - An engine control system includes a cylinder control module and a pump control module. The cylinder control module selectively deactivates cylinders of an engine. In response to a determination that at least one of the cylinders is deactivated, the pump control module: selectively increases a target displacement for an oil pump that is driven by a balance shaft of the engine; and selectively adjusts displacement of the oil pump based on the target displacement. | 09-11-2014 |
20140331970 | DIRECT INJECTION OF DILUENTS OR SECONDARY FUELS IN GASEOUS FUEL ENGINES - A method for operating an engine, comprising port injecting a first quantity of a first gaseous fuel in a cylinder cycle and direct injecting a second quantity of a secondary injectant in the cylinder cycle as a function of a desired air-to-fuel ratio (AFR), the desired AFR based on a temperature of an engine cylinder valve. The desired AFR may be outside the AFR range available during natural gas combustion alone and thus allows for cooler engine operation. | 11-13-2014 |
20140331971 | COMBUSTION CONTROL DEVICE AND CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE - In a control device | 11-13-2014 |
20140366842 | CONBUSTION CONTROL DEVICE FOR GAS ENGINE - To improve output and thermal efficiency of a gas engine by advancing the ignition timing to a maximum extent while knocking is suppressed, in the plurality of cylinders, by a simple and low-cost means, in a first calculation part | 12-18-2014 |
20150020775 | ENHANCED TRACTIVE POWER AT LOW SPEEDS - A method is disclosed for operating an internal combustion engine in which a coolant temperature of an engine coolant of the internal combustion engine is determined and is compared with a predetermined threshold temperature. If the coolant temperature is higher than the predetermined threshold temperature, a thermal input into the engine coolant is reduced by changing at least one operating parameter of the internal combustion engine. This can be done, for example, by raising a charging pressure of the internal combustion engine. | 01-22-2015 |
20150053179 | METHOD FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE - A method for controlling an internal combustion engine includes: using the pressure sensor method, determining for a first injector a first control period during which a desired quantity of fuel is injected into a lead cylinder; controlling the first injector with the first control period and entering a quantity replacement signal resulting therefrom into a training characteristic field as a function of the drive train parameters; and using null quantity calibration, varying for all further cylinders a control period of the injectors assigned to the cylinders until the quantity replacement signal is reached. | 02-26-2015 |
20150059699 | FUEL INJECTION VALVE EQUIPPED WITH IN-CYLINDER PRESSURE SENSOR - A fuel injection valve equipped with an in-cylinder pressure sensor is provided in which a fuel injection valve is fitted into an injection valve mounting hole provided in an engine, the fuel injection valve injecting fuel from a front end of a valve housing part into a combustion chamber of the engine, and the in-cylinder pressure sensor, which is cylindrical and has a front end facing the combustion chamber, and a cylindrical signal circuit tube fitted and connected to an inner peripheral face of a rear end of the in-cylinder pressure sensor are fitted and fixed to an outer peripheral face of the valve housing part, housed in the injection valve mounting hole, of the fuel injection valve. In such fuel injection valve, the signal transmission device connected to an in-cylinder pressure sensor does not vibrate within an injection valve mounting hole, thus enabling its durability to be ensured. | 03-05-2015 |
20150090221 | CONTROL SYSTEM FOR DUAL-FUEL ENGINE - A control system is provided for use with a dual-fuel engine. The control system may have a detonation sensor configured to generate a detonation signal indicative of detonation within at least one associated cylinder of the dual-fuel engine, and a governor sensor configured to generate a demand signal associated with a demand for liquid fuel supply into the dual-fuel engine based on an output of the engine. The control system may also have a detection sensor configured to generate a detection signal indicative of a gaseous fuel presence outside the dual-fuel engine, and a controller in communication with the detonation sensor, the governor sensor, and the detection sensor. The controller may be configured to determine undesired flow of gaseous fuel based on any one or more of the detonation, demand, or detection signals. | 04-02-2015 |
20150090222 | ENGINE SYSTEM HAVING FUEL QUALITY SENSOR - A fuel quality sensor is provided for use with an engine system. The fuel quality sensor may have a single sensing element configured to sense a thermodynamic property of an unknown mixture of gaseous fuel, and a heating element configured to increase a temperature of the unknown mixture of gaseous fuel at the single sensing element to multiple different temperature levels. The fuel quality sensor may also include a microprocessor configured to calculate a fuel parameter of the unknown mixture of gaseous fuel as a function of only the thermodynamic property sensed at the multiple different temperature levels. | 04-02-2015 |
20150122223 | SYSTEM AND METHOD OF CONTROLLING FUEL INJECTION PRESSURE IN AN ENGINE HAVING AN IN-CYLINDER PRESSURE SENSOR - A method of operating an internal combustion engine is provided. An in-cylinder pressure within a cylinder of the engine is determined. A fuel injection pressure from a fuel injector disposed within the cylinder is determined. A ratio of the in-cylinder pressure within the cylinder and the fuel injection pressure is compared to a stored threshold value. The fuel injection pressure is adjusted based upon the comparison of the ratio of the in-cylinder pressure within the cylinder and the fuel injection pressure to the stored threshold value. | 05-07-2015 |
20150128905 | SYSTEM AND METHOD FOR DIAGNOSING A FAULT IN AN OXYGEN SENSOR BASED ON AMBIENT TEMPERATURE - A system according to the principles of the present disclosure includes an error count module and a sensor diagnostic module. The error count module increases an error count when an actual air/fuel ratio generated by an oxygen sensor monitoring an exhaust system of an engine is different than a desired air/fuel ratio. The error count module selectively adjusts a rate at which the error count is increased based on an ambient temperature. The sensor diagnostic module diagnoses a fault in the oxygen sensor when the error count is greater than a first predetermined count. | 05-14-2015 |
20150144104 | METHOD AND DEVICE FOR CONTROLLING A FILLING IN A CYLINDER OF AN INTERNAL COMBUSTION ENGINE - A method is provided for controlling a filling (rl) of an internal combustion engine ( | 05-28-2015 |
20150300280 | CONTROL METHOD OF INTERNAL COMBUSTION ENGINE AND INTERNAL COMBUSTION ENGINE APPLYING THE SAME - A control method of an internal combustion engine and an internal combustion engine applying the same. Each cylinder is provided with a throttle valve, or a plurality of paralleled throttle valves are employed to supply air for different cylinders or cylinder groups, so that different cylinders are provided with different inlet pressure and inlet airflow, different spark ignition timing (phase angle), different injection timing (phase angle), and different injection quantity, and in a complete work cycle, some cylinders of the engine operate under a compression ignition combustion mode, and some cylinders of the engine operate under a spark ignition combustion mode. When the conditions for compression ignition combustion mode are satisfied, the cylinders adopt the compression ignition combustion mode as much as possible, so as to improve the thermal power efficiency of the engine. The internal combustion engine or vehicle installed with the control method has wide adaptability to different fuel with different ignition points, can detect the octane number of gasoline, and consume various octane number gasoline. | 10-22-2015 |
20150315987 | CONTROL DEVICE FOR DIESEL ENGINE - A control device for a diesel engine that is capable of restraining deterioration of a combustion state in a wide range of temperature environment conditions, in a diesel engine including an EGR device. In the control device for a diesel engine including the EGR device which recirculates exhaust gas from an exhaust passage to an intake passage, means for performing reduction correction that reduces an exhaust gas recirculation amount by the EGR device when the combustion state of the diesel engine is deteriorated, means for acquiring a temperature correlation value having a correlation with a cylinder temperature at a time of ignition of the diesel engine, and means for restricting execution of reduction correction when the temperature correlation value is smaller than a threshold value. | 11-05-2015 |
20150369166 | CONTROL DEVICE OF ENGINE - A control device for an engine includes an angular velocity detecting unit that detects the angular velocity of a rotating shaft which is driven according to an output of an engine, an angular acceleration calculating unit that calculates angular acceleration based on the angular velocity detected by the angular velocity detecting unit, a heat generation timing calculating unit that calculates a certain timing when the ratio of an amount of heat generation in a cylinder to the total amount of heat generation of one cycle falls in a predetermined range, based on a change of the angular acceleration calculated by the angular acceleration calculating unit, and a combustion control unit that controls combustion in the cylinder by comparison between the certain timing calculated by the heat generation timing calculating unit and a predetermined heat generation timing reference value. | 12-24-2015 |
20150377155 | METHOD AND CONTROLLER FOR SETTING THE COMBUSTION PARAMETERS FOR AN INTERNAL COMBUSTION ENGINE OPERATED WITH LIQUEFIED NATURAL GAS - A method is provided for setting combustion parameters of an internal combustion engine operated with liquefied natural gas, the combustion parameters being sensed during operation of the internal combustion engine and being stored upon shutoff of the internal combustion engine. Also provided is a controller for carrying out the method. Provision is made that during a stoppage of the internal combustion engine, the duration of the stoppage, the ambient temperature and/or tank temperature, and the pressure in a liquefied gas tank are sensed; the influence thereof on a required adaptation of the combustion parameters that are to be set is identified from a characteristics diagram; and from the stored combustion parameters and the adaptation, initial combustion parameters are identified and are used upon startup of the internal combustion engine in order to control it. | 12-31-2015 |
20160032847 | COMBUSTION CONTROL DEVICE FOR GAS ENGINE - An object is to prevent an engine from entering an unstable combustion state such as misfire upon recovery, by halting or reducing gas fuel for a cylinder in which knocking is occurring, and then increasing the gas fuel again to appropriately perform a recovery control upon recovery to the optimum operation. A combustion control device for a gas engine includes: a knocking determination unit | 02-04-2016 |
20160032852 | METHOD OF CALIBRATING A CRANK ANGLE OF A COMBUSTION ENGINE - The present application provides a calibration device for calibrating a crank angle of a calibrateable combustion engine, the calibrateable combustion engine and a method for calibrating. The calibration device is provided to determine a trigger wheel angle offset from a combustionless driving of the combustion engine in that an in-cylinder pressure profile is recorded, on the basis of which a trigger wheel angle offset is determined and stored at an offset memory of the combustion engine. The combustion engine is configured to determine a crank angle on the basis of a measured trigger wheel angle and the stored trigger wheel angle offset. | 02-04-2016 |
20160053700 | ENGINE EMISSION CONTROL SYSTEM INCLUDING COMBUSTION CHAMBER TEMPERATURE MONITORING SYSTEM - An internal combustion engine control system includes at least one cylinder having a combustion chamber configured to combust an air/fuel mixture stored therein. The air/fuel mixture is configured to combust in response to reaching an autoignition temperature. At least one electronic control module is configured to determine a chamber temperature within the combustion chamber. The electronic control module controls combustion of the air/fuel mixture based on a comparison between the chamber temperature and an autoignition temperature threshold. | 02-25-2016 |
20160069252 | SYSTEM AND METHOD FOR CONTROLLING OPERATION OF AN ENGINE - The method involves receiving a plurality of current operating parameters of an engine during operation of engine and determining at least one of a current substitution ratio and a current peak cylinder pressure based on the plurality of current operating parameters. The method also involves determining at least one of a target substitution ratio and a predefined peak cylinder pressure based on the plurality of current operating parameters and comparing at least one of the current substitution ratio with the target substitution ratio and the current peak cylinder pressure with the predefined peak cylinder pressure. The method also involves controlling a first power output from a plurality of engine cylinders and a second power output from an electric turbo-compounding system, based on the comparison of at least one of the current substitution ratio with the target substitution ratio and the current peak cylinder pressure with the predefined peak cylinder pressure. | 03-10-2016 |
20160097339 | CONTROLLER FOR DIESEL ENGINE - A controller for a diesel engine has a fuel injector which injects a fuel into a cylinder. The controller has a middle-combustion time computing portion which computes a middle-combustion time period that has elapsed from the fuel is injected until a half of the fuel has combusted, based on a detection value of a cylinder pressure sensor. Further, the controller has a fuel component computing portion which computes a ratio of a carbon quantity relative to a hydrogen quantity contained in the fuel based on the middle-combustion time period. | 04-07-2016 |
20160160776 | Engine System and Method - A pressure sensor disposed to sense an engine cylinder pressure provides a pressure signal, and an engine timing sensor provides an engine timing signal to an electronic controller, which is programmed to receive and analyze the pressure and engine timing signals to determine a misfire signal, a peak pressure signal, a pressure rise rate, an actual ignition signal, and a center of combustion signal. The electronic controller is further programmed to activate a fault flag when at least one of the misfire signal, the peak pressure signal, the pressure rise rate, the actual ignition signal, and the center of combustion signal, indicates that an abnormal combustion is present in the cylinder. | 06-09-2016 |
20160169133 | SYSTEM AND METHOD FOR INCREASING GASEOUS FUEL SUBSTITUTION | 06-16-2016 |
20160169142 | SYSTEM AND METHOD FOR OPTIMAL FUELING OF AN ENGINE | 06-16-2016 |
20160169144 | METHODS AND SYSTEMS FOR FIXED AND VARIABLE PRESSURE FUEL INJECTION | 06-16-2016 |
20160186676 | Method and Device for Operating an Internal Combustion Engine - The present disclosure provides a method for adjusting the operation of an internal combustion engine comprising: determining a gradient of an overrun-air line based on an ambient condition and a current operating point; determining a value for a cylinder air mass situated in a cylinder after closure of the gas exchange valves; and using the determined cylinder air mass to adjust one or more operating parameters of the internal combustion engine. The overrun-air line may correspond to an air mass situated in the respective cylinder after closure of the gas exchange valves at predefined operating temperature for the engine, when the engine is operated briefly without fuel metering and combustion. Determining a cylinder air mass may be based at least in part on the current operating point and the current ambient value of the at least one ambient variable. | 06-30-2016 |
20180023505 | DEVICE OF PREDICTING PRESSURE OF DIESEL ENGINE AND PRESSURE PREDICTING METHOD USING THE SAME | 01-25-2018 |