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| Number | Title | Issue Date |
| 7549414 | Control device for internal combustion engine and air-fuel ratio calculation method An internal combustion engine (1), which generates power by burning a mixture of fuel and air in each combustion chamber (3), is provided with an in-cylinder pressure sensor (15) that is located in the combustion chamber (3) for detecting... | 06/23/2009 |
| 7431016 | System for controlling evaporative emissions A control system for controlling a valve in a fuel system of engine including an engine airflow sensor that senses a mass engine airflow (Mengair), a barometric pressure sensor that senses a barometric pressure (Pbaro), and an ambient temperatu... | 10/07/2008 |
| 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 |
| 7287743 | Carburetor with an air bleed passage A carburetor for use with an internal combustion engine has a fuel and air mixing passage, a choke valve with a valve head disposed at least partially in the fuel and air mixing passage and an air bleed passage with at least a portion that is communicated with the c... | 10/30/2007 |
| 7273027 | Startup-time control apparatus and stop-time control apparatus of internal combustion engine, and control methods thereof, and record medium If it is determined that the present engine startup is a high-temperature startup, immediately fuel injection in concert with start of cranking is prohibited. After a delay time elapses following the start of cranking, or when THC | 09/25/2007 |
| 7273033 | Engine control device An engine control device can be capable of suppressing a rise in engine speed at starting. The engine speed can be detected by a speed sensor and a determination can be made whether the engine speed has changed from a starting mode to a normal mode. If the engine sp... | 09/25/2007 |
| 7264230 | Carburetor and solenoid assemblies and methods of assembling the same An engine carburetor and a solenoid valve assembly therefor and methods of assembling the same. The carburetor has a body with a fuel and air mixing passage communicating with an air bleed passage. A cavity extends into the body for communication with the air bleed ... | 09/04/2007 |
| 7195009 | Detection of a humidity sensor failure in an internal combustion engine 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... | 03/27/2007 |
| 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 |
| 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 |
| 6775623 | Real-time nitrogen oxides (NOx) estimation process A process for providing a real-time estimation of in-cylinder NOx production rates during a combustion process in an internal combustion engine. The process employs a model that takes into account fundamental in-cylinder variables such as temperature, pressure and o... | 08/10/2004 |
| 6722344 | Engine control apparatus The invention comprises at least two independent intake ports 14a, 14b connected to a combustion chamber 15, two intake valves 12a, 12b, and two exhaust valves 13a, 13b. A fir... | 04/20/2004 |
| 6666191 | Control apparatus for internal combustion engine Provided is a control apparatus for a fuel priority type internal combustion engine, including a means of directly or indirectly detecting a variation in air density, for correcting a maximum value of the desired fuel volume on a basis of a result of the ... | 12/23/2003 |
| 6557540 | Method of calculating a valve timing command for an engine A method to calculate valve timing commands for an engine with variable valve timing is hereby disclosed. The method includes determining a valve feedforward term based on an engine performance command and an environmental conditions signal, calculating a... | 05/06/2003 |
| 6390058 | Engine fuel injection control device An engine fuel injection control device for performing prescribed pilot injection and main injection on the basis of the operating state of the engine. The control device includes a pilot injection correction unit for correcting a pilot injection quantity... | 05/21/2002 |
| 5320077 | Fuel control system for internal combustion engine A system for exactly detecting any unstable state in which disturbance is caused on the output value of a thermal air flowmeter for measuring intake air flow rate, thereby preventing or promptly suppressing the generation of undesirable states such as a v... | 06/14/1994 |
| 5016596 | Air-fuel ratio control method for internal combustion engines A method of controlling the air-fuel ratio of an air-fuel mixture supplied to an internal combustion engine including the step of interrupting the feedback control of the air-fuel ratio responsive to a detected value of the concentration of an exhaust gas... | 05/21/1991 |
| 4986242 | Electronic fuel injection system for an internal combustion engine An electronic fuel injection system for an internal combustion engine comprising an electronic control system having a central processing unit for detecting engine speed, throttle setting regulating air supply to the engine, exhaust gas concentrations, an... | 01/22/1991 |
| 4889098 | Air-fuel ratio detecting apparatus for an internal combustion engine equipped with a heater controller An air-fuel ratio detecting apparatus for an internal combustion engine of an automotive vehicle has an air-fuel ratio sensing element disposed in the exhaust manifold of the engine, an electric heater which heats the sensing element to above its activati... | 12/26/1989 |
| 4815435 | Process for correcting the richness of an air-fuel mixture admitted into an internal combustion engine with electronic injection Process for correcting the richness of an air-fuel mixture admitted into an internal combustion engine with electronic ignition of the pressure-speed type, to obtain a constant richness as a function of the air temperature entering the cylinders, wherein ... | 03/28/1989 |
| 4777924 | Fuel supply control method for internal combustion engines after starting After starting of an internal combustion engine, a quantity of fuel to be supplied to the engine is increased by the use of a fuel increment, and at the same time a period of time is counted which elapses from the time an oxygen concentration sensor has i... | 10/18/1988 |
| 4753204 | Air-fuel ratio control system for internal combustion engines An air-fuel ratio control system for internal combustion engines has an air-fuel ratio sensor mounted in an exhaust pipe of an internal combustion engine and is adapted to produce an output indicative of the air-fuel ratio of a mixture supplied to the eng... | 06/28/1988 |
| 4617891 | Secondary air supply for internal combustion engine A secondary air intake system is used in an internal combustion engine. The system supplies secondary air through a first and a second secondary air passage. The first secondary air passage includes a first vacuum operated air control valve. A vacuum cont... | 10/21/1986 |
| 4612889 | Idle control method for an internal combustion engine A method of controlling an air-fuel ratio of an air-fuel mixture for an internal combustion engine includes the steps of sensing the intake air temperature and the operating state and rotating speed of the engine using various detectors. When the intake a... | 09/23/1986 |
| 4586481 | Secondary air supply for internal combustion engine A secondary air intake system is used in an internal combustion engine. The system supplies secondary air through a first and a second secondary air passage. The first secondary air passage includes a first vacuum operated air control valve. The second se... | 05/06/1986 |
| 4584979 | Air-fuel ratio control system for an internal combustion engine with a three way catalytic converter An air-fuel ratio control system for an internal combustion engine having an oxygen concentration sensor for a feedback control of air-fuel ratio, including an intake air temperature sensing means and a control means for operating/stopping the feedback co... | 04/29/1986 |
| 4572135 | Air-to-fuel ratio control system for an engine In a carburetor in which air-to-fuel ratio is feedback controlled into a stoichiometric mixture ratio in response to oxygen sensor signals, air-to-fuel ratio is determined to a lower value to supply a rich mixture to an engine when intake air temperature ... | 02/25/1986 |
| 4526148 | Air-fuel ratio control system for an internal combustion engine A closed-loop air-fuel control system for an internal combustion engine comprising a control circuit having an open-loop mode of operation in which an air-fuel ratio control signal is fixed to a predetermined value determined by a sensed value of the atmo... | 07/02/1985 |
| 4497297 | Control system for air/fuel ratio adjustment system The invention is concerned with a control system for an air/fuel ratio measurement and adjustment system for an internal combustion engine. In order to limit operation of the measurement and adjustment system to occasions when adjustment is likely to be n... | 02/05/1985 |
| 4495919 | Control system for air/fuel ratio adjustment system The invention is concerned with a control system for an air/fuel ratio measurement and adjustment system for an internal combustion engine. In order to restrict operation of the air/fuel ratio measurement and adjustment system to occasions when adjustment... | 01/29/1985 |
| 4495922 | Air/fuel ratio control system for an internal combustion engine An air/fuel ratio control system for an internal combustion engine having an air induction system equipped with a secondary air passage communicated with an air intake passage and an oxygen sensor disposed in an exhaust system of the engine, the flow of t... | 01/29/1985 |
| 4164032 | Computer control of an exhaust gas recirculation device for an internal combustion engine Disclosed herein is a computer control system of an exhaust gas recirculation device for an internal combustion engine, wherein values of the parameters of desired EGR ratios when various conditions in the engine intake system exist are preliminarily stor... | 08/07/1979 |
| 4122809 | Air-fuel ratio control system An internal combustion engine is equipped with an air-fuel ratio controlling device which monitors at least one exhaust gas component and adjusts the air-fuel ratio according to detection of the component. It is, however, desirable to operate the device o... | 10/31/1978 |
| 3963009 | Carburation devices for internal combustion engines A carburetor has a main throttle and an auxiliary throttle which is automatically opened in proportion to the air flow in the induction pipe. Fuel is delivered to the induction pipe through a passage whose cross-section is metered in accordance with the p... | 06/15/1976 |
| 3931808 | Altitude compensation system for a fuel management system In a fuel injection system for an internal combustion engine the opening time of the injectors is proportional to the amount of fuel supplied. In the system having an exhaust gas sensor closing the control loop, the sensor compensates for both barometric ... | 01/13/1976 |
