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| Number | Title | Issue Date |
| 7401602 | Method of estimating state quantity or temperature of gas mixture for internal combustion engine The present apparatus calculates a mass ma (mass ratio ma/mf) of mixing-gas-forming cylinder interior gas, which is a portion of cylinder interior gas to be mixed with a forefront portion of injected fuel vapor having a mass of mf, on the basis of a predetermined em... | 07/22/2008 |
| 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 |
| 7337770 | Oxygen enrichment for internal combustion engines In accordance with embodiments of the present invention, a system is provided comprising an oxygen-enrichment reverse osmosis unit coupled to an intake of an internal combustion engine. Ambient air is supplied to the reverse osmosis unit via an ambient-air inlet and... | 03/04/2008 |
| 7269941 | Fuel injection control apparatus and fuel injection control method for internal combustion engine An internal combustion engine includes an in-cylinder injection valve and an intake passage injection valve. A control apparatus of the engine determines whether the temperature of a component located in the exhaust passage is higher than or equal to a predetermined... | 09/18/2007 |
| 7269952 | Method and apparatus for gas turbine dry low NOx combustor corrected parameter control A method for controlling a combustor of an engine, the combustor having a fuel to oxidant ratio, the fuel to oxidant ratio being defined as a ratio of an amount of fuel supplied to the combustor divided by an amount of oxygen in an oxidant stream supplied to the com... | 09/18/2007 |
| 7267117 | Method and device for controlling the exhaust gas recirculation in an internal-combustion engine based on the measurement of the oxygen concentration in the gaseous mixture taken in by the engine A method and a device for controlling the exhaust gas recirculation in an internal-combustion engine are described herein. The engine is provided with an air-intake system, a gas-exhaust system, and an exhaust-gas-recirculation system. A linear oxygen sensor is arra... | 09/11/2007 |
| 7261098 | System and method for adjusting the exhaust gas recirculation rate in an internal combustion engine An exhaust gas recirculation system for an internal combustion engine, which comprises an intake plenum, an exhaust gas system, and a fresh-air feed line and an exhaust gas recirculation line connected to the intake plenum, includes a sensor, arranged in the intake ... | 08/28/2007 |
| 7249454 | Fuel injection control apparatus and fuel injection control method for internal combustion engine An internal combustion engine includes an in-cylinder injection valve and an intake passage injection valve. A control apparatus of the engine determines whether a catalyst located in an exhaust passage is in an overtemperature condition. When the catalyst is determ... | 07/31/2007 |
| 7234450 | Gas density ratio detector, gas concentration detector, and fuel vapor treatment apparatus When a gas flow producer is driven, plural kinds of gases flow into a measure-passage at respective timing. An orifice is provided in the measure-passage. The orifice has a diameter-changing portion which restricts a separation of gases from an inner surface of the ... | 06/26/2007 |
| 7182067 | Storage-volume fuel injection system for an internal combustion engine The injection system (1) includes a pump (7) for supplying high-pressure fuel to a storage volume, defined for example by a common rail (6), for supplying a number of injectors (5). The pump (7) has at least one reciprocating pumpi... | 02/27/2007 |
| 7182066 | Control apparatus for internal combustion engine and method of calculating intake air quantity for same An internal combustion engine (1) generates power by burning a mixture of fuel and air in each combustion chamber (3). The internal combustion engine (1) is provided with an in-cylinder pressure sensor (15) disposed in the combustion cham... | 02/27/2007 |
| 7140356 | Engine throttle opening degree area estimation method, as well as engine acceleration detection method and device and engine fuel injection control method and device using the estimation method An engine fuel injection control device including: means for detecting an amount of change per minimal time in intake pipe pressure of an engine as an intake pipe pressure change amount; means for performing an arithmetical operation of calculating an opening area o... | 11/28/2006 |
| 7055508 | EGR control device and method for internal combustion engine An EGR control device is provided with an EGR control valve (52) and an electronic control unit (60). An exhaust gas recirculation pipe (51) extends across the EGR control valve (52). The electronic control unit calculates a target EGR ra... | 06/06/2006 |
| 7047938 | Diesel engine control system with optimized fuel delivery A system (400) and method of determining fuel demands of a locomotive engine (10) based upon engine speed and power produced by the engine at a given time, so to optimize the engine's power output for a load while reducing engine emissions. The engine ... | 05/23/2006 |
| 7000602 | Engine system and fuel vapor purging system with cylinder deactivation Various systems and methods are disclosed for carrying out combustion in a fuel-cut operation in some or all of the engine cylinders of a vehicle. Further, various subsystems are considered, such as fuel vapor purging, air-fuel ratio control, engine torque control, ... | 02/21/2006 |
| 6971358 | Intake system for internal combustion engine and method of controlling internal combustion engine An intake system has a tubular intake manifold, having an end connected to an intake port of an engine and an opposite end connected to a throttle body that includes a throttle valve. The intake system also has a bypass passage, connected to the intake manifold down... | 12/06/2005 |
| 6938466 | Fuel driveability index detection An exemplary embodiment is a method, system and storage medium for fuel driveability index detection. The system includes an engine and an oxygen sensor disposed within the exhaust gas passage of the engine. An engine control module is operatively connected to the e... | 09/06/2005 |
| 6923169 | Exhaust gas purifying apparatus of internal combustion engine and activation control method for the same An exhaust gas purifying apparatus adopted to an internal combustion engine provided with air-fuel ratio learning means for learning a primary air-fuel ratio given in the form of a mass ratio between air and fuel introduced into a combustion chamber, comprises an ex... | 08/02/2005 |
| 6857415 | Control system for internal combustion engine A bypass passage for bypassing a check valve is connected with a vacuum introducing passage of a brake booster. The bypass passage is provided with a switching valve. Just before the start of an engine, the switching valve temporarily opens the bypass passage whereb... | 02/22/2005 |
| 6823843 | System and method to minimize the amount of NOx released from a NOx trap A method is described for controlling lean and rich operation of an internal combustion engine coupled to a lean NOx trap. In one example, the termination of the lean air-fuel mixture is based on an oxygen storage capacity and temperature of the NOx trap. In another... | 11/30/2004 |
| 6748919 | Internal combustion engine and fuel injection control device therefor In the fuel cylinder injection engine with the supercharging machine, the ignitability deteriorates because the density of the fuel at the spray center becomes excessive due to the shrinkage of the fuel spray under the supercharging. As a result, the density of the ... | 06/15/2004 |
| 6718960 | Diagnostic apparatus for gas mixture supply apparatus and diagnostic method thereof A diagnostic apparatus for gas mixture supply apparatus and diagnostic method thereof characterized in that, when any trouble has occurred to gas mixture from a gas mixture supply apparatus, it can be identified as an error; and at least engine startup is ensured, c... | 04/13/2004 |
| 6708681 | Method and device for feedback controlling air-fuel ratio of internal combustion engine An air-fuel ratio detected by an air-fuel ratio sensor is estimated based on an estimation value of air-fuel ratio of an air-fuel mixture formed inside a cylinder, and based on an air-fuel ratio estimated as being detected by this air-fuel ratio sensor and the air-f... | 03/23/2004 |
| 6499474 | Air/fuel ratio control apparatus for internal combustion engine An air/fuel ratio correction cylinder determining section 25 specifies, based on the peak phase, a cylinder for which an air/fuel ratio is to be corrected. A cylinder-specific air/fuel ratio correcting section in the form of respective cylinder correcting... | 12/31/2002 |
| 6499476 | Vapor pressure determination using galvanic oxygen meter A method and apparatus for galvanically measuring vapor pressure of a volatile liquid is described. Vapor pressure of the volatile liquid is derived by galvanically detecting the reduction in oxygen partial pressure in air that is caused by evaporation of... | 12/31/2002 |
| 6493626 | Drive power control apparatus and method for vehicle An engine output for bringing the drive power of a motor vehicle to a requested value is determined as a target output. One of the lean burn and the stoichiometric burn is selected as a combustion form that achieves a best fuel consumption performance in ... | 12/10/2002 |
| 6470854 | Air-fuel ratio control with improved fuel supply operation immediately after complete combustion of mixture In an air fuel ratio control for engines, a target operation characteristic of engine speed is set based on a coolant temperature when the engine starts cranking. The target engine speed is variable with time after the engine cranking has started and conv... | 10/29/2002 |
| 6460513 | Method to adapt engine fuel control, by multi-component vaporization method, to actual volatility quality of fuel A system (12) and method for controlling the injection of fuel into a cylinder (14) of an internal combustion engine (10) are provided. The system (12) includes a fuel injector (22), a temperature sensor (48), and an electronic control unit (ECU) (50). Th... | 10/08/2002 |
| 6349710 | Engine combustion controller An engine combustion controller for an engine having a fuel supply system selects an engine combustion mode from one of lean combustion, in which an air fuel mixture leaner than a stoichiometric mixture is burned, and stoichiometric combustion, in which a... | 02/26/2002 |
| 6314953 | Method and system for regulating the air/fuel stream fed to an internal-combustion engine Method and system for regulating the composition of an air/fuel stream supplied to an internal-combustion engine, comprise determining the mixture flow of the stream, the energy concentration of the air/fuel stream being measured and, from this, the desir... | 11/13/2001 |
| 6305167 | Method of controlling an engine with an EGR system A method of controlling an internal combustion engine includes determining an exhaust gas recirculation (EGR) command signal based on at least one engine condition, and determining a variable geometry turbocharger (VGT) command signal based on at least on... | 10/23/2001 |
| 6237575 | Dynamic infrared sensor for automotive pre-vaporized fueling control A pre-vaporized fuel system for use in fueling an internal combustion engine is provided with a dynamic infrared sensor. The infrared sensor senses the hydrocarbon content of the vaporized fuel which information is used by the engine control module to con... | 05/29/2001 |
| 6167877 | Method of determining distribution of vapors in the intake manifold of a banked engine A method is provided for accommodating the purge vapors from an evaporative emission control system of an automotive vehicle. The method includes a means of learning the bank-to-bank distribution of purge vapors within the engine manifold. As such, the fu... | 01/02/2001 |
| 6155242 | Air/fuel ratio control system and method An air/fuel ratio control method for an internal combustion engine corrects airflow prediction errors. The method compares the current airflow to the value that was predicted several events in the past and creates an error signal. Based on this error sign... | 12/05/2000 |
| 6098605 | Method and apparatus for operation of an internal combustion engine in a true closed loop fuel control A true closed-loop air/fuel ratio control system for an internal combustion engine which uses a cylinder air charge percentage value also known as a cylinder or engine load value, is used to control the air/fuel ratio of said engine in response to the dif... | 08/08/2000 |
| 6029451 | Method of operating an internal combustion engine In a method and apparatus for operating an internal combustion engine having an air intake duct for supplying combustion air to the engine, an exhaust pipe for discharging exhaust gases from the engine, and an exhaust gas recirculation pipe extending betw... | 02/29/2000 |
| 6000385 | Combustion engine with EGR apparatus A combustion engine with an EGR apparatus has an EGR path connecting an exhaust path and an intake path. An EGR control valve is mounted in the EGR path for controlling the amount of flow of an EGR gas flowing from the exhaust path to the intake path. The... | 12/14/1999 |
| 5977525 | Control device for a heater for an air fuel ratio sensor in an intake passage A control device for a heater for an air fuel ratio sensor attached close to a sensor element of an air fuel ratio sensor located in an intake passage of an intake passage. The control device comprises an ambient temperature related parameter detecting me... | 11/02/1999 |
| 5954040 | Method and arrangement for controlling an internal combustion engine of a vehicle The invention is directed to a method for controlling an internal combustion engine of a vehicle utilizing a control unit which detects operating data of the engine. The control unit includes a computing unit for processing the operating data and the cont... | 09/21/1999 |
| 5908023 | Method and apparatus for enriching the oxygen content in the intake air of an internal combustion engine The invention is directed to a method and an arrangement for enriching the oxygen content in the intake air of an internal combustion engine. To enrich the oxygen content, air is conducted through a membrane which is primarily permeable for oxygen molecul... | 06/01/1999 |
