| CUMMINS INC. Patent applications |
| Patent application number | Title | Published |
|---|
| 20100224450 | REVERSIBLE OIL PAN WITH INTEGRATED OIL SUCTION TUBE - A reversible oil pan assembly including an oil suction tube. In one aspect, an oil pan assembly includes an oil pan and a suction tube connected to the oil pan. The suction tube includes an inlet to draw oil from the oil pan, and a plurality of outlets, each outlet configured to output oil that has been moved through the suction tube from the inlet. | 09-09-2010 |
| 20100180590 | BYPASS VALVE ACTUATION - A system and method for controlling air flow in an engine system. In one embodiment, the system includes an engine, a turbocharger coupled to the engine, and a compressor bypass valve coupled to the turbocharger and to the engine. The compressor bypass valve includes a mechanism that allows the compressor bypass valve to be closed by default and allows the compressor bypass valve to be actuated passively when acted upon by a boost pressure when the boost pressure increases above a predefined pressure threshold. According to the system and method disclosed herein, the compressor bypass valve is passive, and thus controls air flow to the engine without requiring active control circuitry or logic. | 07-22-2010 |
| 20100154412 | APPARATUS AND METHOD FOR PROVIDING THERMAL MANAGEMENT OF A SYSTEM - An embodiment is an apparatus for providing thermal management of a diesel aftertreatment device. The apparatus includes an intake throttle, at least one exhaust gas recirculation (EGR) valve coupled to the intake throttle, a turbine bypass valve coupled to the at least one EGR valve and a control mechanism coupled to the intake throttle, the at least one EGR valve and the turbine bypass valve for selectively actuating at least one of the valves based on an engine operation profile. | 06-24-2010 |
| 20100147272 | EXHAUST GAS RECIRCULATION COOLER COOLANT PLUMBING CONFIGURATION - A cooling system for an engine is disclosed. In a first embodiment, the cooling system may comprise a heat exchanger, a pump coupled to the heat exchanger, an EGR cooler coupled to the pump, and a first valve coupled to the EGR cooler and the heat exchanger. When the first valve is in a first position, the first valve directs a coolant to the heat exchanger and when the first valve is in a second position, the heat exchanger is bypassed and coolant flows directly to the pump. It is an advantage for a cooling system to utilize a valve to maximize the rate a coolant flows throughout the system when the valve is in an open position and also to warm up an engine when the valve is in a closed position. | 06-17-2010 |
| 20100147254 | COOLING OIL IN AN ENGINE SYSTEM - A system and method for cooling oil in an engine system. In one embodiment, the system includes an oil sump and an oil cooler that is integrated into the oil sump. The oil cooler receives cooling fluid and ejects the cooling fluid, and the cooling fluid cools oil in the oil sump as the cooling fluid passes through the oil cooler. According to the system and method disclosed herein, the overall size of the engine system and the number of external pressurized oil lines are reduced. | 06-17-2010 |
| 20100107808 | Method for increasing torsional fatigue strength in crankshafts - A method for processing a cast iron crankshaft to improve the torsional fatigue strength of the crankshaft includes forming oil holes into a portion of the crankshaft, treating the portion of the crankshaft to harden an annular area of the portion, and roller burnishing a length of the interior of the oil holes to an increased diameter. The roller burnished length of the oil holes extending from a surface of the crankshaft to at least beyond the hardened annular area. | 05-06-2010 |
| 20100095910 | NYLON BODY LOCATED PISTON COOLING NOZZLE - A piston cooling nozzle including a nylon body having a hub and a pair of integral legs extending from the hub and a tube for delivering coolant to a piston. The pair of legs are formed relative to the hub and the tube to ensure that when the body is mounted to an engine block, the legs engage a cylinder liner to thereby position the tube between a skirt of the piston and a connecting rod coupled to the piston. | 04-22-2010 |
| 20100083644 | APPARATUS AND METHOD FOR MOUNTING A CLOSE-COUPLED CATALYST - Mounting close-coupled catalysts for internal combustion engines. In one aspect, supporting a catalyst in an internal combustion engine includes a mounting bracket coupled to a base surface of an engine block. One or more support rods are coupled between the mounting bracket and a housing of the catalyst, such that the catalyst is coupled to and supported by the base surface of the engine block. | 04-08-2010 |
| 20100043760 | FUEL PUMP - A fuel pump is disclosed wherein a substantially cylindrical plunger bore is provided with an annular drain groove fluidically coupled to a drain duct. A pump plunger is driven by a drive system located in a separate mechanical compartment that holds a reservoir of lubricating oil. An annular seal is provided adjacent the drain groove substantially at the end of the bore and retained in position by a seal support. Exemplary embodiments provide the drain groove and seal as being positioned immediately adjacent one another so that the seal forms a lower wall of the drain groove. | 02-25-2010 |
| 20090287392 | METHOD AND SYSTEM FOR CLOSED LOOP LAMBDA CONTROL OF A GASEOUS FUELED INTERNAL COMBUSTION ENGINE - A method and system in accordance with the present invention provides for improved lambda control utility that includes the following: the introduction of an inner control loop to the lambda control based on the pressure of the gaseous fuel downstream of the fuel control valve and upstream of the carburetor relative to the pressure of the air at the inlet of the carburetor, and the introduction of operating point based dynamic parameter scheduling in the lambda feedback control loop. The combination of these enhancements, working together, will allow an engine system to consistently meet the mandated performance requirements via tighter lambda control in the presence of set point changes and load disturbances. | 11-19-2009 |
| 20090241897 | LOW COST VARIABLE SWIRL - Variable swirl for internal combustion engines. In one aspect, an apparatus includes a first intake valve controlling air flow from a first intake port to a piston cylinder of the internal combustion engine, where the first intake valve has a first lift profile. A second intake valve controls air flow from a second intake port to the piston cylinder, where the second intake valve has a second lift profile different than the first lift profile. The combination of first and second lift profiles causes a variable swirl of air in the cylinder as a function of engine speed. | 10-01-2009 |
| 20090241683 | MASS AIR FLOW SENSOR ADAPTOR - Mass air flow sensing for internal combustion engines. In one aspect, a sensor adaptor for use in an internal combustion engine includes an inlet housing including an approximately 90-degree elbow and directing air within the inlet housing to the internal combustion engine in an airflow direction. A mass air flow sensor is coupled to the housing at a location after the 90-degree elbow with respect to the airflow direction and senses the air flowing within the inlet housing. | 10-01-2009 |
| 20090241543 | RANKINE CYCLE LOAD LIMITING THROUGH USE OF A RECUPERATOR BYPASS - A system for converting heat from an engine into work includes a boiler coupled to a heat source for transferring heat to a working fluid, a turbine that transforms the heat into work, a condenser that transforms the working fluid into liquid, a recuperator with one flow path that routes working fluid from the turbine to the condenser, and another flow path that routes liquid working fluid from the condenser to the boiler, the recuperator being configured to transfer heat to the liquid working fluid, and a bypass valve in parallel with the second flow path. The bypass valve is movable between a closed position, permitting flow through the second flow path and an opened position, under high engine load conditions, bypassing the second flow path. | 10-01-2009 |
| 20090169400 | FAN HUB INTEGRATED VACUUM PUMP SYSTEM - An integrated fan and pump drive system. | 07-02-2009 |
| 20090125184 | CIRCUIT BOARD WITH INTEGRATED CONNECTOR - Removable circuits and related mounting hardware for removably connecting circuits to a vehicle's control system. Circuits and connectors form an addressable assembly which may be enclosed in a flowable material. | 05-14-2009 |
| 20090112445 | System and Method for Estimating NOx Produced by an Internal Combustion Engine - A system and method are provided for estimating NOx produced by an internal combustion engine. The flow rate of fuel supplied to the engine and a plurality of engine operating parameters are monitored. NOx produced by the engine is estimated based on a product of the flow rate of fuel and a function of the plurality of engine operating parameters. The NOx estimate is stored in memory. | 04-30-2009 |
| 20090107130 | Diffuser Plate for Improved Mixing of EGR Gas - An apparatus configured for the mixing of two fluids traveling in substantially perpendicular directions. The apparatus includes a cylindrical member including a longitudinal conduit. The member also includes at least one diffusing plate. The diffusing plate includes a surface with a larger area and a surface with a smaller area. The larger area surface includes a plurality of apertures. The bore directs one of the fluids onto the larger area of the diffusing plate and through the apertures. The smaller surface of the diffusing plate is orientated in the direction of travel of the second fluid. | 04-30-2009 |
| 20090084355 | System and method for metering fuel in a high pressure pump system - A system and method for metering fuel is provided which includes a fuel supply line and a metering valve in fluid connection with the fuel supply line to control a flow of fuel through the fuel supply line. The valve is movable into a closed position to block a primary flow of fuel and create a leakage fuel flow in the fuel supply line downstream of the metering valve. The system also includes a venturi apparatus fluidly coupled to the fuel supply line upstream of the metering valve. The venturi apparatus is further coupled to the fuel supply line downstream of the metering valve to direct the leakage fuel flow out of the fuel supply line. | 04-02-2009 |
| 20090056312 | APPARATUS, SYSTEM, AND METHOD FOR ESTIMATING PARTICULATE PRODUCTION - An apparatus, system, and method are disclosed for estimating particulate production from a diesel engine. Engine conditions such as fuel rate, exhaust gas recirculation, and fuel injection timing are determined. Based on empirical evidence or theoretical calculations, or both, particulate production markers, each indicating a level of particulate production, are assigned to each engine condition. The markers are combined and the combined marker is used to interpolate between a minimum and a maximum level of particulate production from the engine to estimate a particulate production rate. The production rate may be combined with an oxidation rate to determine a particulate accumulation rate, which may in turn be combined with a particulate load estimate to produce a combined particulate load estimate. The combined estimate may be used to determine whether to initiate regeneration of a diesel particulate filter. | 03-05-2009 |
| 20090018719 | Interface and monitoring system and method for a vehicle idling control - An idle control system for a vehicle is provided. | 01-15-2009 |
| 20090018707 | Adaptive system and method for controlling vehicle idling - An idle control system for a vehicle is provided. | 01-15-2009 |
| 20090018702 | System and method for controlling vehicle idling based on engine emmissions - An idle control system for a vehicle is provided. | 01-15-2009 |
| 20090017986 | Totally integrated temperature sensor - An idle control system for a vehicle is provided. | 01-15-2009 |
| 20090017643 | Battery connection and monitoring - An idle control system for a vehicle is provided. | 01-15-2009 |
| 20090016042 | Idle control system and method of mounting - An idle control system for a vehicle is provided. | 01-15-2009 |
| 20090015203 | System and method for controlling vehicle idling and maintaining vehicle electrical system integrity - A battery charge maintenance system for a vehicle is provided. | 01-15-2009 |
| 20080306664 | Continuous Variable Transmission System - A method and system for controlling a continuously variable transmission (CVT). In one embodiment, the method includes receiving vehicle operation data. The method also includes controlling engine and transmission operations based on the vehicle operation data, fuel efficiency data, and CVT efficiency data. | 12-11-2008 |
| 20080271713 | FUEL INJECTOR ASSEMBLY WITH INJECTOR SEAL RETENTION - A fuel injector assembly with injector seal retention includes a fuel injector body including an injector nozzle housing disposed at a distal end of the fuel injector body. The injector body is adapted with a grooved portion to securely capture an injector seal to prevent the loss of the injector seal during installation and/or removal of the fuel injector assembly into an engine cylinder head. | 11-06-2008 |
| 20080236262 | MISFIRE DETECTION IN ENGINES FOR ON-BOARD-DIAGNOSTICS - Detection of cylinder misfires in engines. In one aspect of the invention, a method for detecting a cylinder misfire in an engine includes monitoring a temperature in the exhaust of the engine. Vibration of the engine is analyzed to identify a misfiring cylinder in the engine if the monitored temperature indicates a misfire may have occurred. | 10-02-2008 |
| 20080224417 | LOW LEAKAGE PLUNGER ASSEMBLY FOR A HIGH PRESSURE FLUID SYSTEM - A fluid control device for use in a high pressure fluid system, the device including a device body with a cavity and a high pressure circuit, a plunger positioned for reciprocal movement in the cavity, and a leakage reduction cap mounted to the plunger for reducing fluid leakage flow. In one implementation, the leakage reduction cap includes a flexible portion positioned between the device body and the plunger, and defining an annular clearance gap between the leakage reduction cap and the device body. The flexible portion of the leakage reduction cap resiliently flexes radially outwardly in response to fluid pressure forces to reduce the annular clearance gap so as to minimize fluid leakage flow through the annular clearance gap. | 09-18-2008 |
