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| Number | Title | Issue Date |
| 7730873 | Valve controlled throttle mechanism in a heat regenerative engine In an engine having at least one cylinder with a reciprocating piston and a connecting rod for driving rotation of a crank disk and a crankshaft, a cam sleeve is moved along the crankshaft in response to a change in engine speed. The cam sleeve is coupled to a cam r... | 06/08/2010 |
| 7647915 | System for controlling fuel injectors An injector control system and method for an engine includes a distribution module that calculates a difference between a first average engine speed and a second average engine speed of an engine and a fuel offset module that offsets a learned fuel amount of a first... | 01/19/2010 |
| 7493889 | Method for controlling the composition of a fuel/air mixture for an internal combustion engine In a method for controlling a composition of a fuel/air mixture supplied to an internal combustion engine, which engine has a speed control circuit maintaining an actual rotary speed of the crankshaft within preset limits and a controllable metering device for at le... | 02/24/2009 |
| 7373238 | Control system of internal combustion engine A cylinder air filling amount is divided into a first amount of air and a second amount of air, the first amount of air and the second amount of air are calculated, and the first amount of air and the second amount of air are totaled to calculate a cylinder air fill... | 05/13/2008 |
| 7341044 | Method and control device for regulating the air-fuel mixture provided to an engine A method and device is provided for regulating the air-fuel mixture provided to an engine of a stand-by electrical generator during the exercise thereof. The engine is exercised at a predetermined speed less than the normal operating speed of the engine and each cyl... | 03/11/2008 |
| 7334569 | Control apparatus for internal combustion engine An air-fuel ratio feedback system is configured to calculate the deviation between a target air-fuel ratio and an air-fuel ratio sensor value, multiplying a proportional gain by the calculated deviation to obtain a feedback correction value, and add the calculated f... | 02/26/2008 |
| 7267326 | Automatic priming system An automatic priming system for internal combustion engines, which is operable to prime the carburetor of the engine at engine cranking speeds, and is automatically disabled after the engine starts. The automatic priming system is driven by pressure fluctuations wit... | 09/11/2007 |
| 7261282 | Carburetor with intermediate throttle valve blocking position A carburetor including a frame having a first air/fuel channel and a second air channel; and a throttle valve assembly connected to the frame and having two valve sections. Each valve section is located in a respective one of the channels. A second one of the valve ... | 08/28/2007 |
| 7216856 | Accelerator apparatus for diaphragm carburetor The accelerator apparatus prevents air from remaining within a pump chamber and discharged fuel vapor from causing a pumping effect so as to a destabilize engine operation and increase of an exhaust gas content of harmful material, in an accelerator apparatus in whi... | 05/15/2007 |
| 7210454 | Internal combustion engine capable of selectively resting certain cylinders during low-load operation, and method of using same An internal combustion engine having cylinders capable of selectively resting during engine operation is capable of eliminating step increases in engine output when the number of operative cylinders is changed. The internal combustion engine includes a plurality of ... | 05/01/2007 |
| 7198030 | Internal combustion engine An internal combustion engine is operated with a predetermined fixed A/F ratio in an operating range where the amount of intake air is not larger than a predetermined value but, in an operating range where the amount of intake air is larger than the predetermined va... | 04/03/2007 |
| 7186947 | Process monitor for laser and plasma materials processing of materials A method for monitoring the processing of a workpiece includes directing an incident laser beam onto the workpiece and measuring a signal emitted from the workpiece. At least two signals are generated by a detector based upon the emitted signal. A workpiece processi... | 03/06/2007 |
| 7111450 | Method for controlling the temperature of an emission control device A method is disclosed for controlling operation of an engine coupled to an exhaust treatment catalyst. Under predetermined conditions, the method operates an engine with a first group of cylinders combusting a lean air/fuel mixture and a second group of cylinders pu... | 09/26/2006 |
| 7104526 | Carburetor with intermediate throttle valve blocking position A carburetor including a frame having a first air/fuel channel and a second air channel; and a throttle valve assembly connected to the frame and having two valve sections. Each valve section is located in a respective one of the channels. A second one of the valve ... | 09/12/2006 |
| 7028670 | Torque control for engine during cylinder activation or 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, ... | 04/18/2006 |
| 6945221 | Method and device for operating a drive unit having an internal combustion engine A method and a device for operating a drive unit having internal combustion engine, in particular of a vehicle, making an expansion of the adjusting range of a regulator possible without significant additional complexity. In at least one operating state a setpoint v... | 09/20/2005 |
| 6947802 | Centralized control architecture for a laser materials processing system Apparatus, systems, and methods for monitoring the processing of a workpiece that includes directing an incident laser beam onto the workpiece and using an optical detector for measuring a signal emitted from the workpiece as a result of the incident laser beam. The... | 09/20/2005 |
| 6932053 | Control device of internal combustion engine A catalyst for purifying exhaust gas is provided in an exhaust pipe of an engine. When air-fuel ratio dither control is performed, an ECU calculates a requested torque to be generated by combustion of the engine based on an accelerator opening angle or the like oper... | 08/23/2005 |
| 6932052 | Air/fuel ratio control system for gaseous fueled engines The invention provides a system that controls the air intake pressure of a venturi mixer in an air/fuel ratio control system for gaseous fueled engines to match the fuel vaporizer/regulator output pressure (negative pressure) or to a desired set point of a fuel vapo... | 08/23/2005 |
| 6907858 | Engine fuel injection control system An engine fuel injection control system is configured to alleviate the torque fluctuation that occurs due to deviation in a pilot injection timing when the excess air ratio is changed suddenly from lean to rich. When the excess air ratio changes by a large amount, t... | 06/21/2005 |
| 6904899 | Air-fuel ratio controller for internal-combustion engine An output signal from a downstream-side exhaust gas sensor is fed back into a fuel injection rate so that the air-fuel ratio of the exhaust gases flowing out from a catalyst may match a reference value. In this sub-feedback control process, the integral value of the... | 06/14/2005 |
| 6866019 | Breather-operated priming system for small internal combustion engines A priming system for small internal combustion engines is operable at engine cranking speeds to prime the carburetor of the engine, and is automatically disabled at engine running speeds. The priming system includes a control valve having an air vane responsive to r... | 03/15/2005 |
| 6840214 | Air-fuel ratio control apparatus for internal combustion engine An air-fuel ratio control apparatus for controlling an air-fuel ratio of an air-fuel mixture to be supplied to an internal combustion engine having a plurality of cylinders so that the air-fuel ratio coincides with a target air-fuel ratio. An air-fuel ratio is detec... | 01/11/2005 |
| 6837232 | Air-fuel ratio control apparatus for internal combustion engine When in controlling an air-fuel ratio by a feedback control, a target air-fuel ratio is changed between normal time and at rich control time, a difference between a change amount of the target air-fuel ratio and a change amount of an air-fuel ratio feedback correcti... | 01/04/2005 |
| 6786196 | Fuel injection quantity control device A fuel injection quantity control device for controlling an actual revolution speed En of an engine to a target revolution speed Eo, comprises difference computation unit for subtracting the actual revolution speed En from the target revolution speed Eo and finding ... | 09/07/2004 |
| 6745747 | Method for air-fuel ratio control of a lean burn engine A method is disclosed for controlling operation of an engine coupled to an exhaust treatment catalyst. Under predetermined conditions, the method operates an engine with a first group of cylinders combusting a lean air/fuel mixture and a second group of cylinders pu... | 06/08/2004 |
| 5992381 | Process for determining the optimal richness of a fuel-air mixture supplied to an internal combustion engine and corresponding device A process to determine an optimal richness of a fuel-air mixture supplied to an internal combustion engine. The engine has a speed regulator capable of varying an opening angle of a valve for admitting the fuel-air mixture into the engine to maintain the ... | 11/30/1999 |
| 5715789 | Method for controlling engine for model and device therefor A method for controlling an engine for a model and a device therefor capable of improving throttle response. Feed of fuel to the engine is increased during acceleration of the engine and decreased during deceleration thereof. This permits a rotational spe... | 02/10/1998 |
| 5660157 | Output torque control apparatus and method for an internal combustion engine The invention provides an output torque control method and apparatus for a lean burn internal combustion engine which accounts for aging of component parts, and in which no stepwise change of torque or shock occur when an air fuel ratio is changed. The me... | 08/26/1997 |
| 5615655 | Control system for internal combustion engines A control system for an internal combustion engine having a pressurized gaseous fuel source, a control valve for regulating the amount of gaseous fuel supplied from the pressurized gaseous fuel source, and an intake passage in which the gaseous fuel, the ... | 04/01/1997 |
| 5335744 | Knock control system for automobile internal combustion engine A system for controlling combustion knock, if occurring, in an engine by suppressing it by retarding ignition timing. The engine is equipped with traction control for preventing the driven wheel of the vehicle on which the engine is mounted from slipping.... | 08/09/1994 |
| 5284113 | Arrangement in an i. c. engine A two cycle i. c. engine adjusted to a certain maximum engine speed at a correct fuel mixture ratio is provided with an electrically adjustable fuel system and a tachometer. The invention is based on the fact that the engine speed is at its maximum at a m... | 02/08/1994 |
| 4864991 | Method and apparatus for controlling air to gas ratio of gaseous fueled engines Apparatus for controlling the air to gas ratio of fuel supplied to a gas engine that includes a conduit connecting the carburetor to the intake maifold of the engine. A throttle valve is located in the conduit for varying the flow area therethrough in res... | 09/12/1989 |
| 4862367 | Automatic speed control apparatus for controlling vehicle speed at set speed An automatic speed control apparatus for controlling the running speed of a vehicle at a constant set speed includes an auxiliary intake passage providing direct communication between portions of a main intake passage upstream and downstream from a thrott... | 08/29/1989 |
| 4619232 | Interactive idle speed control with a direct fuel control A method for controlling the idling speed of an internal combustion engine supplied with a lean air/fuel ratio includes generating a speed error signal. The speed error signal is used to generate a fuel pulse width command signal to control fuel mass char... | 10/28/1986 |
| 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 |
| 4535736 | Method and apparatus for controlling air-fuel ratio in internal combustion engine Disclosed is a method of controlling the air-fuel ratio of an air-fuel mixture to be supplied to an internal combustion engine. The method employs a feedback control in which the control is made to maintain the air-fuel ratio at the stoichiometric level i... | 08/20/1985 |
| 4532903 | Binary and proportional control for a feedback carburetor A control system for a feedback carburetor in which a controlled vacuum is applied to the carburetor fuel bowl to reduce the fuel flow rate and provide maximum fuel economy. Engine speed is monitored and reduced a predetermined amount during steady state ... | 08/06/1985 |
| 4512304 | Method and apparatus for controlling air to gas ratio in gas engines Apparatus for controlling the air to gas ratio of fuel being supplied to a gas engine that utilizes the pressure in the inlet of the carburetor and the pressure in the intake manifold of the engine to control a regulator that is used to supply gas to the ... | 04/23/1985 |
| 4499872 | Ultra lean burn carburetted adiabatic engine An improved carburetted internal combustion engine (10) which operates with an extremely lean mixture, without a conventional cooling system, and at an elevated temperature characteristic of an adiabatic engine. The engine uses two ignition sources (20, 2... | 02/19/1985 |
