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| Number | Title | Issue Date |
| 7363916 | Fuel injection system and method for determining the feed pressure of a fuel pump The invention relates to a fuel injection system comprising a fuel reservoir to which fuel is fed via at least one first pump and from which fuel is discharged via injectors. The invention is characterized in that the feed pressure of the first pump is adjusted depe... | 04/29/2008 |
| 7240671 | Device for correcting fuel injection amount of internal combustion engine, and control apparatus for internal combustion engine employing the device To prevent RPM decrease, misfire, and engine stall by refraining from correcting, the amount of fuel to shift an air-fuel ratio toward a lean side to the extent of exceeding a combustion limit when the internal combustion engine operates at a low load, a control app... | 07/10/2007 |
| 7168422 | Control apparatus for an internal combustion engine A control apparatus for an internal combustion engine can avoid overcorrection at a lean side of air fuel ratio learning correction by unburnt fuel in a blowby gas, and prevent rotational speed reduction and engine stall during air fuel ratio open-loop control after... | 01/30/2007 |
| 7117045 | Combined proportional plus integral (PI) and neural network (nN) controller A neural network controller in parallel with a proportional-plus-integral (PI) feedback controller in a control system. At least one input port of the neural network for receiving an input signal representing a condition of a process is included. A first set of data... | 10/03/2006 |
| 7017567 | Device and method for measuring element temperature of air-fuel ratio sensor, and device and method for controlling heater of air-fuel ratio sensor A device according to the present invention is provided with element temperature measurement voltage application circuit for temporarily applying a predetermined voltage for element temperature measurement to a sensor element of an air-fuel ratio sensor equipped to ... | 03/28/2006 |
| 6976483 | Air-fuel ratio control apparatus for internal combustion engine and method thereof When an internal combustion engine is in a low load and low rotation operation, and also an elapsed time after the starting of engine operation is less than a predetermined period of time, a heater heating an air-fuel ratio sensor is turned OFF, to stop an air-fuel ... | 12/20/2005 |
| 6976701 | Airbag door and method for making same An airbag door system is provided comprising a substrate, an outer shell and a foam where all three layers possess a line of mechanical weakness with each line of mechanical weakness at least partially separating each layer into an airbag door portion and a trim mem... | 12/20/2005 |
| 6918385 | Air-fuel ratio detecting apparatus of engine and method thereof A temperature of an oxygen concentration detector generating an electromotive force according to a difference between oxygen concentration in an engine exhaust gas and oxygen concentration in the atmosphere, is detected, and coefficients in a transformation for conv... | 07/19/2005 |
| 6880329 | Exhaust gas purifying system for internal combustion engines A first oxygen sensor is mounted on an exhaust pipe. An ECU determines an electric power to be fed to a sensor heater, by a heater control quantity calculating block, in accordance with a difference between an actual impedance and a target impedance calculated by a ... | 04/19/2005 |
| 6837217 | Method and apparatus for motor-driven throttle valve, automobile, method of measuring temperature of motor for driving automotive throttle valve, and method of measuring motor temperature A method is provided for easily avoiding undesirable effects on various physical values due to the change in temperature of a motor for driving a throttle valve without causing secondary problems. A technique is also provided for measuring the temperature of the mot... | 01/04/2005 |
| 6722436 | Apparatus and method for operating an internal combustion engine to reduce free oxygen contained within engine exhaust gas A method and apparatus for controlling the operation of an internal combustion engine to reduce the presence of free oxygen in the exhaust gas of the engine. The method and apparatus provides for the internal combustion engine to be operated with a fuel-to-air ratio... | 04/20/2004 |
| 6629521 | Oxygen sensor and feedback system for outboard motor engine An outboard motor includes a sensor assembly having a housing with a sensor chamber, a sensor having a sensor element exposed to the sensor chamber, and a sleeve disposed in a passage extending from a combustion chamber of the outboard motor to the sensor... | 10/07/2003 |
| 6474323 | Optimized lambda and compression temperature control for compression ignition engines The performance of a compression ignition internal combustion engine is improved by optimizing excess air ratio (lambda) and/or intake air charge temperature (ACT) on a full time, fall range basis. The basic procedure is to first determine the desired or ... | 11/05/2002 |
| 6360733 | Self-adapting method of controlling the mixture ratio of an internal combustion engine injection system A self-adapting method of controlling the mixture ratio of an injection system, of an internal combustion engine. In each operating state of the engine and for each injector, the method determines a nominal quantity of fuel to be injected as a function of... | 03/26/2002 |
| 6273076 | Optimized lambda and compression temperature control for compression ignition engines The performance of a compression ignition internal combustion engine is improved by optimizing excess air ratio (lambda) and/or intake air charge temperature (ACT) on a full time, full range basis. The basic procedure is to first determine the desired or ... | 08/14/2001 |
| 6257174 | Method of determining the composition of fuel in a flexible fueled vehicle after fuel blending The present invention provides a flexible fuel compensation system for determining the percent alcohol content of fuel in a flexible fueled vehicle at the instance of fueling and in an open loop operating mode. According to the invention, two estimated pe... | 07/10/2001 |
| 6188049 | Apparatus and method for controlling heater of air-fuel ratio sensor in internal combustion engine An initial power feed quantity to be provided at the start to an electric heater equipped to an air-fuel ratio sensor is set corresponding to the temperature of a sensor element, and at the same time, the increase control time for increasingly changing th... | 02/13/2001 |
| 6116228 | Control for engine A feed back control system and method for direct injected engines, particularly useful in marine applications to avoid excessive hunting due to the close proximity of the sensor to the fuel injector. Both injection initiation and duration are controlled u... | 09/12/2000 |
| 6082345 | Air-fuel ratio control system for internal combustion engines An air-fuel ratio control system for an internal combustion engine is provided, which includes an oxygen concentration sensor arranged in the exhaust system and having an output characteristic that an output thereof is substantially proportional to concen... | 07/04/2000 |
| 5983878 | Engine control The present invention is an engine control for an internal combustion engine having at least one combustion chamber and an air/fuel charging system for delivering an air and fuel charge to the combustion chamber for combustion therein. The control include... | 11/16/1999 |
| 5947089 | Method of compensating for a failed sensor in a flexible fueled vehicle The present invention provides a method of compensating for an erroring sensor in a flexible fuel compensation control system for a flexible fueled vehicle. The methodology provides a method for identifying preselected operating conditions without the out... | 09/07/1999 |
| 5921220 | Engine feedback control An engine feedback control for an internal combustion engine having at least two combustion chambers is disclosed. When a sensor detects a high engine temperature condition of the engine, the feedback control changes the air/fuel ratio of the air and fuel... | 07/13/1999 |
| 5915368 | Air/fuel ratio control apparatus that uses a neural network An air/fuel ratio control apparatus for executing auxiliary control of an air/fuel ratio by compensating an injected fuel amount set by a control system for maintaining the air/fuel ratio at a preset value. The air/fuel ratio control apparatus includes a ... | 06/29/1999 |
| 5816231 | Controller for heater of air-fuel-ratio sensor An apparatus controls power supplied to a heater of an air-fuel-ratio sensor in consideration of the radiant heat from a catalytic converter. A map showing a relationship between power supplied to the heater and engine operating conditions is prepared on ... | 10/06/1998 |
| 5806491 | Air-cooled multi-cylinder engine An air-cooled multi-cylinder engine including two temperature sensors each attached to different cylinders. The temperature difference between the two cylinders is detected by the temperature sensors. The air-fuel ratio in each cylinder is made the stoich... | 09/15/1998 |
| 5782227 | Apparatus for controlling a heater for heating an air-fuel ratio sensor An apparatus, for controlling a heater for heating an air-fuel ratio sensor, which is capable of preventing an excessive temperature rise of the heater after the air-fuel ratio sensor has been activated. After engine start-up, power is continuously suppli... | 07/21/1998 |
| 5724951 | Engine control system and method A control system and method for a multi cylinder engine that employs a single sensor associated with only one of the combustion chambers for feedback control of that combustion chamber and for controlling the fuel/air ratio of the remaining combustion cha... | 03/10/1998 |
| 5697353 | Feedback engine control system Feedback control systems for engines employing combustion condition sensors. The feedback control is varied in response to various other parameters such as back pressure, engine speed, engine temperature, engine load and initial start-up operation so as t... | 12/16/1997 |
| 5623914 | Air/fuel ratio control apparatus Fuel vapor is produced in a fuel tank and absorbed in a canister. The absorbed fuel vapor is purged through a purge passage into an engine induction passage under predetermined engine operating conditions. The air/fuel ratio is learned for air/fuel ratio ... | 04/29/1997 |
| 5582157 | Fuel property detecting apparatus for internal combustion engines Provided is an apparatus for detecting a volatility of fuel supplied to an engine, in order to ensure a more precise acceleration dependent fuel increasing-correction during air-fuel-ratio feed-back control. When the air-fuel-ratio feed-back control begin... | 12/10/1996 |
| 5579746 | Engine lean air/fuel control system An air/fuel control system for an engine (28) provides an air/fuel indicating signal linearly related to average engine air/fuel operation from a two-state exhaust gas oxygen sensor (44). Fuel delivered to the engine is modulated with a periodic signal (1... | 12/03/1996 |
| 5544640 | System and method for heating an oxygen sensor via multiple heating elements A circuit and method are provided for heating a dual heater oxygen sensor. One resistance element is of relatively low resistance such that the oxygen sensor is heated quickly and the other element is of relatively high resistance such that the oxygen sen... | 08/13/1996 |
| 5520162 | Boiloff for a flexible fuel compensation system A flexible fuel compensation system including a method of methanol boil-off compensation. The methanol boil-off compensation method includes an initialization routine, a run mode routine and a shutdown routine. The method will monitor a plurality of flags... | 05/28/1996 |
| 5515826 | Engine air/fuel control system An engine air/fuel control system modulates the flow of fuel delivered to the engine with a modulation signal (100, 144) The feedback variable generated (210-228) from a two-state exhaust gas oxygen sensor (16) corrects the fuel flow (156). During each of... | 05/14/1996 |
| 5515280 | Electronic control device for a multi-fuel internal combustion engine With an electronic control device for an internal combustion engine using an oxygenated compound mixed fuel, operating conditions of the engine are detected, and are utilized to determine fundamental control data for the engine, while the dielectric const... | 05/07/1996 |
| 5474054 | Fuel injection control system with compensation for pressure and temperature effects on injector performance A fuel injection control system suitable for use with internal combustion vehicle engines fueled by compressed natural gas or the like. A conventional liquid-fuel closed-loop injection timing controller establishes the duration of each injection command s... | 12/12/1995 |
| 5445136 | Air-fuel ratio control apparatus for internal combustion engines For stable air-fuel ratio control without hunting, an output condition of an air-fuel ratio sensor is monitored to decide whether or not a modern or advanced control using a dynamic model may be performed. The appropriateness of using the dynamic model ma... | 08/29/1995 |
| 5253630 | Air-fuel ratio control system for internal combusion engines An air-fuel ratio control system for an internal combustion engine controls the air-fuel ratio of a mixture supplied to the engine to a desired air-fuel ratio in response to an output from an exhaust gas ingredient concentration sensor. A first value of t... | 10/19/1993 |
| 5178121 | Air/fuel ratio control system for internal combustion engine A system for controlling an air/fuel ratio of an internal combustion engine supplied with a blended fuel of gasoline and alcohol and equipped with a blowby gas ventilator. An oxygen sensor is provided and an amount of fuel supply is corrected in response ... | 01/12/1993 |
| 5103791 | Fuel supply control system for internal combustion engine with feature of exhaust temperature responsive enrichment A fuel supply control system for an internal combustion engine sets an amount of heat generated within a combustion chamber at least based on an engine load condition, and a reference temperature of an exhaust system on the basis of an engine coolant temp... | 04/14/1992 |
