Class / Patent application number | Description | Number of patent applications / Date published |
123704000 | Air/fuel ratio prior to combustion responsive means | 30 |
20090084370 | Apparatus for Calculating Combustion Energy of Internal Combustion Engine - An apparatus for calculating combustion energy of an internal combustion engine having a rotational velocity calculation unit for calculating a rotational velocity of a crank from a time required for the crank angle to change by a predetermined angle, a rotational acceleration calculation unit for calculating a rotational acceleration from the rotational velocity, a filter for extracting components synchronous with engine combustion from a signal representative of rotational velocities, and a gate for delivering a filter output when the rotational acceleration takes a minimum value, wherein the length of the filter equals one engine cycle/the number of cylinders. | 04-02-2009 |
20090217917 | METHOD FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE - A method for controlling an internal combustion engine that is to be operated either by petrol or alcohol or by a variable proportion of the two fuels and that includes an electronic control unit that can drive the engine, an admission line, and an exhaust line that includes a richness probe. The method determines the richness of the carbide mixture entering into the combustion cylinders, and increases the duration of the injection by intervals according to the richness of the carbide mixture. | 09-03-2009 |
20090320814 | System and method for controlling an internal combustion engine using flame speed measurement - A system is disclosed for controlling a combustion engine. The system includes a measurement apparatus disposed external to a combustion chamber of the engine. A device is configured to selectively direct an amount of air and fuel to the measurement apparatus. An ignition source is configured to ignite the air and fuel to produce a flame propagating within the measurement apparatus. A sensor is configured to measure at least one parameter associated with the flame propagating within the measurement apparatus. A controller is configured to determine a flame speed within the measurement apparatus based on the at least one measured parameter, and to control an operating flame speed in the engine by managing an air/fuel ratio of the engine based on the determined flame speed. | 12-31-2009 |
20100180876 | METHOD OF CONTROLLING IN-CYLINDER TRAPPED GAS MASSES IN A VARIABLE TIMING GASOLINE ENGINE - The invention is a method of controlling trapped gas masses in cylinders of a variable timing gasoline engine. A set point is determined for a trapped air mass in a cylinder and a set point is determined for trapped burnt gas mass in a cylinder. Then, in order to meet these set points: an intake pressure set point is generated from measurements of variable timing of positions of actuators and from the air mass set point; a position set point is generated for each of two variable timing actuators, from an intake pressure measurement and from the burnt gas mass set point; finally, a throttle and the variable timing actuators are controlled so as to meet the intake pressure set point and the set point position of the variable timing actuators. | 07-22-2010 |
20100242936 | Controlling Exhaust Gas Recirculation - In controlling an engine, an amount of an intake charge provided, during operation of the engine, to a combustion chamber of the engine is determined. The intake charge includes an air component, a fuel component and a diluent component. An amount of the air component of the intake charge is determined. An amount of the diluent component of the intake charge is determined utilizing the amount of the intake charge, the amount of the air component and, in some instances, the amount of the fuel component. An amount of a diluent supplied to the intake charge is adjusted based at least in part on the determined amount of diluent component of the intake charge. | 09-30-2010 |
20100242937 | METHOD FOR REGULATING A STATIONARY GAS MOTOR - The invention relates to a method for regulating a stationary gas motor ( | 09-30-2010 |
20100263647 | LIQUID CONCENTRATION MEASURING DEVICE - A microcomputer of an alcohol concentration sensor reads a first measurement value corresponding to a first frequency and reads a second measurement value corresponding to a second frequency. The microcomputer calculates a difference between the first and second measurement values. The microcomputer performs stuck failure abnormality determination when a state where the difference between the measurement values is equal to or smaller than a predetermined value continues. The microcomputer outputs a PWM signal of a specific frequency, which is different from a frequency in a case of a normality, to an engine ECU. Thus, a failure of the alcohol concentration sensor can be surely determined. | 10-21-2010 |
20100313863 | INTAKE SYSTEM FOR INTERNAL COMBUSTION ENGINE - An intake system for an internal combustion engine includes an intake passage connected with an intake port of the internal combustion engine; an EGR passage merged with the intake passage at a junction portion; a gas sensor attached to the intake passage and configured to detect a concentration of specific gas; and a control section configured to control the internal combustion engine on the basis of an output signal of the gas sensor. A diameter-enlarged portion having an inner diameter larger than an inner diameter of the junction portion is formed at a portion of the intake passage which is located on a downstream side of the junction portion. The gas sensor is located downstream from the diameter-enlarged portion. | 12-16-2010 |
20110030665 | METHOD FOR DIAGNOSING THE CONDITION OF AN ENGINE FUEL SUPPLY SYSTEM - A method for diagnosing a condition of a system for supplying fuel to a fuel injected controlled-ignition internal combustion engine, of a type including an electric control device that makes use of an oxygen probe for closed-loop regulation of a value of an air/fuel ratio admitted to the combustion chambers of the engine, and according to which a signal delivered by the oxygen probe is analyzed, the method a) deducing from the signal a change in injection time correction factor ALPHACL_MEAN making it possible to regulate richness of exhaust gases leaving the engine; b) comparing ALPHACL_MEAN against predetermined minimum and maximum threshold values THRESHOLD_MIN and THRESHOLD_MAX; c) diagnosing a defective condition when ALPHACL_MEAN is outside of a window included between THRESHOLD_MIN and THRESHOLD_MAX. | 02-10-2011 |
20110048393 | INTERNAL COMBUSTION ENGINE CONTROL APPARATUS, AND INTERNAL COMBUSTION ENGINE CONTROL METHOD - It is determined whether or not an in-cylinder-injecting fuel injection valve enters an excessive injection state, by comparing a planned demanded in-cylinder injection amount Fdio and a minimum fuel injection amount Fmin. If Fdio03-03-2011 | |
20110197867 | Fuel Economizer Fuel Vapor System for Internal Combustion Engine - A fuel vaporizer system for an internal combustion engine including a first closed chamber defining a first volume, the first closed chamber having a heat transfer surface; a second closed chamber at least partially surrounding the first closed chamber and defining a second volume; and a third closed chamber at least partially surrounding the second closed chamber and defining a third volume. A liquid fuel supply system including a liquid fuel supply line emits fuel into the first volume in an expanding pattern of liquid fuel spray from at least one orifice. A thermal fluid system from said engine is configured to circulate fluid, which may be engine coolant, through the second volume and transfer heat from the fluid through the first closed chamber and vaporize said liquid fuel. An exhaust system from said engine is configured to circulate exhaust through the third volume and transfer heat from the exhaust through the second closed chamber and heat said fluid. A vaporized fuel outlet is configured to direct vaporized fuel from the first closed chamber to supply fuel to at least one combustion region of the internal combustion engine via a combustion fuel supply line. | 08-18-2011 |
20110253117 | Multi-Component Transient Fuel Compensation - A method adjusts fuel injection to account for fuel puddling in the engine intake. The fuel is adjusted based on the ethanol content of the fuel in the puddle, and the make-up of the various fuel components in the puddle. In this way, it is possible to better account for the effects of these parameters on puddle evaporation. | 10-20-2011 |
20120024274 | INTER-CYLINDER AIR/FUEL RATIO IMBALANCE DETERMINATION APPARATUS AND INTER-CYLINDER AIR/FUEL RATIO IMBALANCE DETERMINATION METHOD - The invention provides an inter-cylinder air/fuel ratio imbalance determination apparatus and method. The determination apparatus includes a “limiting current type air/fuel ratio sensor”, and acquires a pre-correction index quantity that is greater the greater the degree of non-uniformity of the cylinder-by-cylinder air/fuel ratios, on the basis of a time differential value of the output value of the air/fuel ratio sensor. The determination apparatus obtains as the correction-purpose output value an average value of the output value obtained during a fuel-cut operation. The correction-purpose output value is greater the higher the responsiveness of the air/fuel ratio sensor. The determination apparatus acquires an air/fuel ratio imbalance index value by correcting the pre-correction index quantity so that the pre-correction index quantity is smaller the greater the correction-purpose output value. It is determined that an inter-cylinder air/fuel ratio imbalance state has occurred, when the air/fuel ratio imbalance index value is greater than or equal to an imbalance determination threshold value. | 02-02-2012 |
20120227720 | FUEL INJECTION APPARATUS FOR INTERNAL COMBUSTION ENGINE - The fuel injection apparatus includes: a fuel injector having a leading end that has an internal space in which fuel is accumulated and has a fuel injection port; and an adsorbent, capable of selectively adsorbing an alcohol component in a blended fuel of gasoline and alcohol, disposed in the internal space. The fuel injection apparatus controls an injection amount from the fuel injector such that an air-fuel ratio is a controlled target air-fuel ratio based on an alcohol concentration of a blended fuel supplied to the fuel injector. In this fuel injection apparatus, a fuel pressure is brought to a predetermined high fuel pressure during cold starting of the internal combustion engine. At this time, an adsorbed amount of alcohol on the adsorbent is estimated and any deviation in the air-fuel ratio of the internal combustion engine is corrected based on the adsorbed amount of alcohol. | 09-13-2012 |
20120318249 | FUEL DELIVERY SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - A fuel delivery system ( | 12-20-2012 |
20130180511 | METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE HAVING MULTIPLE COMBUSTION CHAMBERS, AND INTERNAL COMBUSTION ENGINE HAVING MULTIPLE COMBUSTION CHAMBERS - In a method for operating an internal combustion engine having multiple combustion chambers and an injector for injecting fuel associated with at least one combustion chamber, an excess air factor which is individual for each combustion chamber is adjusted for the at least one combustion chamber, and a torque which is individual for each combustion chamber is ascertained for the at least one combustion chamber. A control period of the injector is adapted for the injector by ascertaining a valve opening period in such a way that tolerances of the injector are at least essentially compensated for with respect to a relationship between the control period and the valve opening period. | 07-18-2013 |
20130239934 | CONTROLLER AND CONTROL METHOD FOR HOMOGENEOUS CHARGE COMPRESSION IGNITION ENGINE - Provided are a controller and a control method for a homogeneous charge compression ignition engine, which are capable of obtaining a highly efficient and stable combustion state over a wide range of load condition. A correction factor computing section executes combustion control with an excess air ratio smaller than approximately 3 when a predetermined condition is satisfied and computes a correction factor for correcting deviations between execution values of valve-opening timings and valve-opening periods of an intake valve and an exhaust valve and basic valve-opening timings and basic valve-opening periods of the intake valve and the exhaust valve which are previously determined for each operation condition, based on a timing at which an ion current becomes maximum detected by a combustion-timing detection section, in the combustion control with the excess air ratio smaller than approximately 3. | 09-19-2013 |
20130247886 | APPARATUS AND METHOD FOR OXY-COMBUSTION OF FUELS IN INTERNAL COMBUSTION ENGINES - A method and apparatus for the oxy-combustion of fuel in an internal combustion engine (ICE) used to power a vehicle converts the free energy available onboard the vehicle in the form of waste heat from the engine exhaust gas stream and coolant system into electrical and/or mechanical energy which energy is used to separate oxygen from air to eliminate or significantly reduce the volume of nitrogen entering the ICE's combustion chamber, and thereby reduce NO | 09-26-2013 |
20140000576 | CHASSIS MOUNT MULTI-INPUT H-BRIDGE ELECTRICAL HARNESS | 01-02-2014 |
20140020668 | GAS ENGINE CONTROL DEVICE - It is an object of the invention to achieve a stable idling revolution speed in a short time and to prevent easily the occurrence of abnormal combustion, misfire, or the like by effectively controlling a gas flow rate adjustment valve even in a case where a fuel gas which tends to fluctuate in fuel gas concentration, as represented by a coal mine gas, is used. The invention includes a revolution speed detection part | 01-23-2014 |
20140165980 | Controlled Spark Ignited Flame Kernel Flow - In some aspects, a spark plug includes a spark gap in an enclosure of the spark plug. The spark plug includes a passage in the interior of the enclosure. During operation of the engine, the passage directs flow through the spark gap, primarily away from a combustion chamber end of the enclosure. The passage can direct flow at a velocity of 5 meters/second or greater. | 06-19-2014 |
20140261351 | Air-Fuel-Ratio Dithering Using a Dual Fuel Path Source - An apparatus for dithering fuel into an internal combustion engine includes a turbine that is powered by the internal combustion engine and a first fuel injector that injects a first fuel into an air stream to create a fuel/air stream. The apparatus also includes an air/fuel compressor that provides a compressed fuel/air stream to the internal combustion engine. The air/fuel compressor is powered by the turbine, and the air/fuel compressor compresses the fuel/air stream to create the compressed fuel/air stream. Additionally, the apparatus includes a second fuel injector that injects a second fuel into the compressed fuel/air stream prior to the compressed fuel/air stream entering the engine and after the compressed fuel/air stream exits the air/fuel compressor. | 09-18-2014 |
20150027424 | SELF IGNITION OPERATION OF ALTERNATIVE FUEL INTERNAL COMBUSTION ENGINES - A method for operating a self ignition internal combustion engine (ICE) with a low cetane fuel such as alternative fuels, for example pyrolysis oil, as well as an ICE are disclosed. To reach self ignition conditions one may provide the internal combustion engine to have a compression ratio of at least 17:1, for example, 18:1 (step | 01-29-2015 |
20150034061 | CONTROL SYSTEM FOR MULTIFUEL INTERNAL COMBUSTION ENGINE - An object of the present invention is to reduce the difference between the torque generated by an internal combustion engine and a required torque in a control system for a multifuel internal combustion engine that can use CNG and liquid fuel. To achieve the object, the control system for an internal combustion engine according to the present invention causes the internal combustion engine to operate in a first operation mode in which only CNG is used, when the required torque of the internal combustion engine is equal to or lower than a threshold and to operate in a second operation mode in which at least liquid fuel among CNG and liquid fuel is used, when the required torque of the internal combustion engine is higher than the threshold and changes the magnitude of the threshold in conjunction with the concentration of inert gases contained in CNG. | 02-05-2015 |
20150075508 | MISFIRE DETECTION APPARATUS AND MISFIRE DETECTION METHOD FOR AN INTERNAL COMBUSTION ENGINE - Provided are a misfire detection apparatus and a misfire detection method for an internal combustion engine, which are capable of correctly detecting a misfire state of an engine for a vehicle small in number of cylinders and in rotational inertia without limiting control to O | 03-19-2015 |
20150114375 | METHOD FOR CONTROLLING VARIABLE VALVE LIFT APPARATUS AND VARIABLE VALVE LIFT SYSTEM - A method for controlling a variable valve lift apparatus includes: measuring an operation mode switching condition; determining whether the variable valve lift apparatus is in a normal operation condition; controlling the operation of the variable valve lift apparatus depending on a predetermined normal valve lift switching map; determining whether the variable valve lift apparatus is in a mode switching delay or switching disable condition from a high lift mode to a low lift mode or whether the variable valve lift apparatus is in the mode switching delay or switching disable condition from the low lift mode to the high lift mode; controlling the operation of the variable valve lift apparatus depending on a predetermined low oil temperature valve lift switching map; and controlling the operation of the variable valve lift apparatus depending on a predetermined high oil temperature valve lift switching map. | 04-30-2015 |
20150114376 | INTER-CYLINDER AIR-FUEL RATIO VARIATION ABNORMALITY DETECTION APPARATUS - An apparatus according to the present invention includes a control apparatus configured to detect inter-cylinder air-fuel ratio variation abnormality based on a parameter correlated with the degree of a fluctuation in output from the air-fuel ratio sensor. The control apparatus is configured to execute a step of identifying two cylinders estimated to have a deviation of the air-fuel ratio based on an output waveform from the air-fuel ratio sensor during one engine cycle, a step of performing reducing control to reduce the deviation of the air-fuel ratio on each of the two cylinders, that is, a first cylinder and a second cylinder, to calculate first and second values of the parameter, respectively, and a step of identifying one of the two cylinders having the most significant deviation of the air-fuel ratio based on the first and second values. | 04-30-2015 |
20150345418 | METHOD AND SYSTEM FOR CONTROLLING FUEL INJECTION - A method for controlling fuel injection of a combustion engine and a corresponding system includes providing at least a first predetermined air-fuel mixture map and determining a first air-fuel ratio based on at least one engine operating parameter and the at least first predetermined air-fuel mixture map; determining a second air-fuel ratio that is offset with a first constant value from the first air-fuel ratio, determining if a first operating mode or a second operating mode is selected; controlling engine fuel injection according to, the first air-fuel ratio when a currently requested fueling rate results in a smaller air-fuel ratio than the first air-fuel ratio and the first operating mode is selected; or alternatively controlling engine filet injection according to the second air-fuel ratio when a currently requested fueling rate results in a smaller air-fuel ratio than the second air-fuel ratio and the second operating node is selected. | 12-03-2015 |
20160025024 | INTERNAL COMBUSTION ENGINE HAVING A REGULATING DEVICE - An internal combustion engine ( | 01-28-2016 |
20160177817 | FAILURE DETECTION DEVICE OF INTERNAL COMBUSTION ENGINE | 06-23-2016 |