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| Number | Title | Issue Date |
| 8074630 | Internal combustion engine control device and internal combustion engine control system An internal combustion engine control device and an internal combustion engine control system are disclosed as applied to an internal combustion engine having external EGR regulating device for regulating an external EGR amount in which a part of exhaust gases is re... | 12/13/2011 |
| 7433776 | System and method for quantizing fuel dilution of engine motor due to post-injection fueling to regenerate an exhaust aftertreatment device A system and method for estimating the effect of forced regeneration of a diesel particulate filter (22) by post-injection of fuel on fuel dilution of engine motor oil. ... | 10/07/2008 |
| 7389771 | Closed loop EGR control method and system using water content measurement The present invention provides an internal combustion engine system that includes an internal combustion engine system includes an internal combustion engine having an intake manifold fluidly coupled to a compressor adapted to receive ambient air through an air cond... | 06/24/2008 |
| 7367330 | Internal combustion engine controller The internal combustion engine controller includes an oxygen concentration sensor outputting an electric signal having a value depending on an oxygen concentration in an exhaust gas flowing through an exhaust passage of an internal combustion engine, and a control u... | 05/06/2008 |
| 7363911 | Humidity-based combustion control in a multiple combustion mode engine A system and method for controlling operation of a gasoline internal combustion engine capable of running in a spark ignition mode and a homogeneous charge compression ignition mode. The method and system implementation include determining humidity of air to be draw... | 04/29/2008 |
| 7318409 | Vehicle engine control system utilizing humidity sensor A system and method for utilizing a humidity sensor with an internal combustion engine of a vehicle is described. Specifically, information from the humidity sensor is used to adjust a desired air-fuel ratio to reduce engine misfire while improving vehicle fuel econ... | 01/15/2008 |
| 7314041 | EGR control system for internal combustion engine An EGR control system that is capable of controlling the amount of recirculation of high-temperature and low-temperature recirculated gases, with high accuracy, to thereby improve the control accuracy of in-cylinder temperature. An ECU of an ERG control system calcu... | 01/01/2008 |
| RE39937 | Exhaust gas recirculation system Past exhaust emission control systems have failed to cool the exhaust gas prior to mixing with the intake air. The present exhaust gas recirculation system cools a flow of exhaust gas with a common coolant being used to cool an engine prior to mixing the flow of exh... | 12/11/2007 |
| 7296562 | Control system and method for estimating turbocharger performance A control system for estimating the performance of a compressor is disclosed. The control system has a compressor fluidly connected to an inlet manifold of a power source. The control system also has a power source speed sensor to provide an indication of a rotation... | 11/20/2007 |
| 7290528 | Exhaust gas recirculation device for internal combustion engine An object of the present invention is to provide an exhaust gas recirculation device with an improved response speed and accuracy of exhaust gas recirculation flow control in an internal combustion engine. A recirculation gas control valve controls a recirculation f... | 11/06/2007 |
| 7292929 | System for a virtual dew point sensor A system for a virtual dew point sensor is disclosed including a method for operating the virtual dew point sensor. The method includes determining a first humidity ratio indicative of the humidity associated with an ambient air as a function of at least a relative ... | 11/06/2007 |
| 7287523 | Thermally responsive regulator valve assembly A thermally responsive regulator valve assembly and exhaust gas recirculation system for an internal combustion engine having an intake manifold and an exhaust system is provided. The exhaust gas recirculation system includes an exhaust gas recirculation passage sel... | 10/30/2007 |
| 7269466 | Optimal operation controller of plant The present invention aims to control elements to improve operation efficiency of a plant based on a correlation value of the past accumulated data. According to the invention, an optimal operation controller obtains a correlation between a state of a predetermined ... | 09/11/2007 |
| 7195007 | Apparatus for calculating amount of recirculated exhaust gas for internal combustion engine An intake pipe downstream of a throttle valve is interconnected with an exhaust pipe via an EGR supply pipe and an EGR control valve is disposed in the EGR supply pipe. An engine load ratio (KLoff) in the engine steady operation with the EGR gas being not supplied, ... | 03/27/2007 |
| 7195006 | Exhaust gas recirculation system with control of EGR gas temperature A method and system for controlling the temperature of recirculated exhaust gas in an exhaust gas recirculation (EGR) system, such as those used in connection with diesel engines. An EGR loop (which may be either a high pressure loop or a low pressure loop) has a du... | 03/27/2007 |
| 7174713 | Method for determination of composition of the gas mixture in a combustion chamber of an internal combustion engine with exhaust gas recirculation and correspondingly configured control system for an internal combustion engine An engine management system uses physically based models to determine the composition and mass of the fresh air/exhaust gas mixture suctioned by an internal combustion engine. The models are closely coupled to each other in a partial manner and are used to simulate ... | 02/13/2007 |
| 7177754 | Exhaust gas recirculation apparatus In an electronic control unit 31, a duty conversion map 41 from which a driving duty in energizing and driving an electromagnetic coil, not shown, of an electromagnetic vacuum adjustment valve 12 on the basis of a variable equivalent to target q... | 02/13/2007 |
| 7174250 | Method for determining an exhaust gas recirculation quantity for an internal combustion engine provided with exhaust gas recirculation In a method of determining the quantity of exhaust gas recirculation for an internal combustion engine having exhaust gas recirculation, the exhaust gas recirculation quantity (rAGR, mAGR) is determined from an exhaust gas temperature (Tex... | 02/06/2007 |
| 7143580 | Virtual compressor outlet temperature sensing for charge air cooler overheating protection A system and method for controlling an internal combustion engine, having an exhaust recirculation (EGR) system and a charge air cooler, to prevent overheating the charge air cooler. The system calculates the output temperature of a turbocharger compressor as a func... | 12/05/2006 |
| 7104228 | Engine with variable cam timing and control advantageously using humidity sensor A system and method for utilizing a humidity sensor with an internal combustion engine of a vehicle is described. Specifically, information from the humidity sensor is used to adjust a desired air-fuel ratio to reduce engine misfire while improving vehicle fuel econ... | 09/12/2006 |
| 7096113 | Method for controlling a regeneration valve of a fuel vapor retention system The invention relates to an operating method for a regeneration valve of a fuel vapor retention system, particularly of a tank vent valve for regenerating an activated carbon filter during which the regeneration valve is controlled by a control signal, whereby the c... | 08/22/2006 |
| 7080511 | Method for controlling engine air/fuel ratio A system for controlling engine air/fuel ratio includes an engine, a compressor having an inlet receiving air. The compressor discharges air to the engine intake. A recirculation path is provided from the compressor discharge to the compressor inlet. A controllable ... | 07/25/2006 |
| 7066160 | Failure diagnosis system for exhaust gas recirculation device An engine ECU of a failure diagnosis system for an EGR device fixes a VVT to a most retarded position upon establishment of a failure monitor condition of the EGR device, starts the EGR device, measures an actual intake pipe pressure PMON upon elapse of a predetermi... | 06/27/2006 |
| 7024301 | Method and apparatus to control fuel metering in an internal combustion engine A system and method for controlling fuel delivery through a fuel injection system to an internal combustion engine is described. An engine controller calculates a mass of fuel for delivery to one of the cylinders through one of the fuel injectors, based upon the ope... | 04/04/2006 |
| 7010417 | System and method for determining maximum available engine torque In one embodiment, a system for determining maximum available engine output torque includes an engine speed sensor and a control computer produce a fueling command for fueling an internal combustion engine. The computer is configured to produce a maximum available e... | 03/07/2006 |
| 7006911 | Actuator control system A system is disclosed for controlling the current used by an actuator to control actuator position. A control circuit is configured to control the actuator current to a value at or near the minimum current required to sustain the actuator in a desired position in or... | 02/28/2006 |
| 7000380 | Controller of cylinder injection type internal combustion engine The present invention is intended to provide a control system for an direct injection internal combustion engine capable of effectively reducing the amounts of both HC and NOx exhausted from a combustion chamber during a period from the start of the engine operation... | 02/21/2006 |
| 6964161 | Induction exhaust system A induction exhaust system, for an internal combustion engine, capable of the multi step processes of 1) scavenging the chamber of exhaust gases and free radicals, 2) breaking the scavenge vacuum wave behind each energetic exhaust pulse, releasing said free radicals... | 11/15/2005 |
| 6962139 | Speed control method A method for controlling an engine having both an electronically controlled inlet device, such as an electronic throttle unite, and an electronically controlled outlet device, such as a variable cam timing system is disclosed. The method of the present invention ach... | 11/08/2005 |
| 6954693 | System for controlling exhaust emissions produced by an internal combustion engine A system for controlling exhaust emissions produced by an internal combustion engine includes an engine controller having an emission manager configured to produce a base emission level cap command, corresponding to a maximum allowable emission level of the engine, ... | 10/11/2005 |
| 6952642 | Device and method for engine control A microprocessor base interengageable engine generator set control and profile throttle control devices that provide directional communication and control via common J1939 protocol of electronic engine control units. Such engine and throttle control units provide cr... | 10/04/2005 |
| 6934621 | Re-entry strategy from boost mode to EGR mode A control for an internal combustion engine that includes an exhaust gas recirculation system predicts at least one of the intake manifold temperature in EGR mode or an intake manifold pressure in EGR mode, but preferably both, during Boost mode operation. The predi... | 08/23/2005 |
| 6931839 | Apparatus and method for reduced cold start emissions An exhaust system for an internal combustion engine having a plurality of cylinders, comprising: a exhaust manifold for providing fluid communication of exhaust of the plurality of cylinders to a catalytic converter, the exhaust manifold comprising a first exhaust p... | 08/23/2005 |
| 6918362 | Engine with variable cam timing and control advantageously using humidity sensor A system and method for utilizing a humidity sensor with an internal combustion engine of a vehicle is described. Specifically, information from the humidity sensor is used to adjust a desired air-fuel ratio to reduce engine misfire while improving vehicle fuel econ... | 07/19/2005 |
| 6909961 | Method and device for measuring a temperature variable in a mass flow pipe A method and an arrangement are suggested for determining a temperature quantity in a mass flow line which includes a throttle position and to which an additional gas mass flow is supplied after the throttle position. The temperature ahead of the throttle position i... | 06/21/2005 |
| 6868329 | Control method of EGR system of engine A control method of an EGR system of an engine capable of effectively performing an EGR control at a time of rapid acceleration. For this purpose, an intake air flow rate of the engine is obtained, and from a target EGR valve opening degree and a difference in press... | 03/15/2005 |
| 6826903 | Exhaust gas recirculation system having cooler An exhaust gas recirculation (EGR) system of an internal combustion engine has an EGR cooler in an EGR passage connecting an exhaust manifold with an intake manifold. The EGR cooler cools EGR gas recirculated through the EGR passage. Cooling performance detecting me... | 12/07/2004 |
| 6820599 | System and method for reducing Nox emissions during transient conditions in a diesel fueled vehicle with EGR The present invention is a dual-stage fuel injection strategy for compression ignition engines in which 15-40% of the fuel is injected into the combustion chamber no later than about −20 to −30 CA ATDC and as early as IVC. The remaining fuel is then injected in ... | 11/23/2004 |
| 6804588 | System for detecting malfunction of internal combustion engine radiator A system for discriminating malfunction of a radiator of an internal combustion engine, in which conditions for execution of malfunction discrimination of the radiator are decided to be established, when a decline amount of outside air temperature is less than a thr... | 10/12/2004 |
| 6748936 | Exhaust gas recirculation control for internal combustion engine and method of exhaust gas recirculation control An internal combustion engine is provided with a VVT mechanism capable of adjusting overlap period in which both intake and exhaust valves are open. The internal combustion engine is also provided with a recirculation mechanism that recirculates exhaust gas to the i... | 06/15/2004 |
