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Class 123/332 - Engine speed reduction by fuel cutoff


Subclass of Class 123 - Internal-combustion engines
Definition: Subject matter to regulate the engine speed by stopping
No. of patents: 43
Last issue date: 05/19/2009


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NumberTitleIssue Date
7533652Control device for vehicle having cooperative control function
A control device for a vehicle for cooperatively controlling the engagement of a lock-up clutch and the conditions of fuel cut. When the rotational speed of an input shaft of a transmission becomes greater than a predetermined value during deceleration running in th...
05/19/2009
7377256Method for operating a drive unit
A method for operating a drive unit, in which, given the use of a vehicle-speed controller, the actual speed is prevented from exceeding the setpoint speed too significantly. In the method, a setpoint value for an output variable of the drive unit is predetermined. ...
05/27/2008
7234442Controlled starting and braking of an internal combustion engine
An internal combustion engine may be provided with independently controllable valves, fuel injectors and ignition elements that may be used to start the engine without a separate auxiliary device such as an electric starter motor. The engine may fire the cylinders u...
06/26/2007
7163000Engine control device
An engine control device can include a throttle valve for adjusting an amount of air supplied to an engine, operation amount detecting sensors for detecting an operation amount of a throttle lever, a motor for driving the throttle valve between open and closed posit...
01/16/2007
6997167Fuel injection control system for engine
A fuel injection control system for an engine comprising: accelerating/decelerating state detection means which samples an intake pipe pressure of the engine at each sample timing which comes every time a very short time is passed from a timing at which a signal gen...
02/14/2006
6988487Fuel injection control device of internal combustion engine
The present invention provides a fuel injection control device which can prevent the occurrence of a phenomenon that when a pressure of fuel in the inside of a pressure storage chamber is elevated during a fuel cut, and the injection of fuel is restarted, the fuel i...
01/24/2006
6966297Throttle device for internal-combustion engine
A throttle device for an internal-combustion engine, in which, on one surface of a throttle body side wall is formed a mounting space for mounting a reduction gear mechanism which transmits the power of a motor to a throttle valve shaft; and a throttle sensor for de...
11/22/2005
6945228Throttle device for internal-combustion engine
Disclosed is a throttle device for an internal-combustion engine, in which, on one side of the side wall of a throttle body, there are formed a space for mounting a reduction gear mechanism which transmits the power from a motor to a throttle valve shaft and a defau...
09/20/2005
6830027Control system for internal combustion engine
A control system for an internal combustion engine having a plurality of cylinders and a switching mechanism for switching between an all-cylinder operation in which all of the cylinders is operated and a partial-cylinder operation in which at least one of the plura...
12/14/2004
6814050Fuel cut control device for internal combustion engine
A fuel cut control device that stops supply of fuel to an internal combustion engine during deceleration of the internal combustion engine having a throttle valve for each cylinder, which detects a maximum value of an intake pipe pressure during one combustion cycle...
11/09/2004
6799110Engine control system
Evacuation operation performance is improved when any abnormality occurs in an electronic throttle control system. When any serious abnormality occurs, a first abnormality storage element (133) operates, a load relay for a power supply circuit (104
09/28/2004
6792912Direct fuel injection combustion control system
A combustion control system controls combustion in a direct fuel injection spark ignition engine that maintains a constant pressure in an accumulator when fuel is not being injected. The combustion control system controls combustion when fuel injection is resumed af...
09/21/2004
5819703Vehicle speed limiting system
A vehicle speed limiting system for a vehicle having an engine which includes a plurality of fuel injectors coupled to a low volume fuel injection pump operative to successively trigger a flow of fuel directly to the individual fuel injectors. The vehicle...
10/13/1998
5709179Engine cylinder valve control system
According to a control strategy, a cylinder valve control device is monitored and operation of the engine is modified. The cylinder valve control device includes a driving shaft driven by the engine to drive an intermediate member which in turn drives a c...
01/20/1998
5706779Vehicle speed limiting system
A vehicle speed limiting system for a vehicle having an engine which includes a plurality of fuel injectors coupled to an inline, low volume fuel injection pump operative to successively trigger a flow of fuel directly to the individual fuel injectors. Th...
01/13/1998
5355972Control device for a sucked air quantity of an engine
A control device for a sucked air quantity of an engine comprises an accelerator pedal opening degree sensor for detecting an opening degree of an accelerator pedal; a throttle valve opening degree sensor for detecting an opening degree of a throttle valv...
10/18/1994
5136996Ignition system and method for internal combustion engine
An ignition system is provided for an internal combustion engine in which an amount of fuel necessary for combustion during one combustion and expansion stroke in one cycle of the internal combustion engine is injected toward respective cylinders, and the...
08/11/1992
5025881Vehicle traction control system with fuel control
In a method of traction control, fuel injectors are selectively disabled to unfuel respective cylinders of an engine to reduce engine torque output. The method provides for limiting the number of cylinders that can be disabled for acceleration spin contro...
06/25/1991
5018595Traction control system
A traction control system controls the engine torque so as to prevent wheel slip during acceleration. The system has an electric control unit ECU which detects the state of wheel slip on the basis of the deviation of the drive wheel speed from a target dr...
05/28/1991
4991552Throttle valve setting device
A throttle-valve setting device has, for idle adjustment, a motor setting lever (10) which displaces a throttle valve (3) and is connected via a path-dependent controlling movement-reversal device (15) to a setting member (13) of a setting motor (12). The...
02/12/1991
4735179Automatic control apparatus for engine throttle valve
A throttle valve is supported rotatably on a pipeline. The throttle valve is driven by a motor. A downstream side of the throttle valve is connected to an engine. A means for opening the throttle valve forcedly is provided so as not to allow a tar compone...
04/05/1988
4577597Method and apparatus for supplying fuel to internal combustion engine
Method and apparatus for supplying fuel to an internal combustion engine, which engine performs strokes for suction, compression, expansion and exhaust in sequence. The method comprises alternatingly supplying fuel to the engine and suspending the fuel su...
03/25/1986
4573440Method for limiting the speed of an internal combustion engine in a vehicle and device for same
In an externally ignited internal combustion engine for a vehicle with an electronic device for controlling the gas mixture composition and the point of ignition a leaner fuel-air mixture and the an earlier point of ignition is set before the maximum perm...
03/04/1986
4553508Internal combustion engine
An internal combustion engine comprises a plurality of cylinders disposed in circular array, each having a piston slidably received therewithin to define a combustion chamber. Connecting rods affixed to the pistons are provided with cam follower means for...
11/19/1985
4424876Pneumatic speed limiter for vehicles
A speed limiting device for vehicles is described in which an actuator is responsive to a vehicle speed sensor to reduce air and fuel supplies to the vehicle engine when a predetermined vehicle speed is reached. The possibility of the vehicle driver overr...
01/10/1984
4384559Speed limiting device for vehicle driven by internal combustion engine
The invention relates to a speed limiting device for a vehicle driven by an internal combustion engine provided with a twin-body carburettor or a dual fuel injection unit comprising two throttle butterfly valves controlled by the vehicle's accelerator ped...
05/24/1983
4361121Control device for shutting off a diesel engine
A control device for Diesel engines is proposed in which a rapid shutoff of the engine can be effected by evacuating the suction chamber of the injection pump. The control device includes a supply pump and a reversal valve, which in a stop position connec...
11/30/1982
4333827Automatic engine shut down device and systems employing the same
An automatic engine shut down device is operable in a system of the type including a pump having a suction inlet and a pressure discharge for discharging a liquid at a operational pressure, an engine for driving the pump, the engine being operable by an e...
06/08/1982
4331114Auxiliary engine stoppage apparatus
Apparatus (10) for stopping an engine from a remote location relative to an operator's work station. An engagement apparatus (20) which is displaceable between first and second positions is engaged with an engine stoppage member (19) which, when rotatably...
05/25/1982
4244334Valve actuating and control circuit
A circuit for actuating control elements, for example a fuel shutoff valve in the carburetor of an internal combustion engine or a similar control element. The circuit is responsive to engine speed and to throttle valve position as monitored via the intak...
01/13/1981
4204513Hydraulic safety mechanism
Three embodiments of a hydraulic safety mechanism are adapted to adjust the speed setting for an engine upon a reduction of pressure in a chamber, due for example, to loss of lubricating pressure, overspeeding of the engine or overheating, for example. In...
05/27/1980
4195610Method and device for stopping a fuel-injection internal combustion engine in case of overspeed
A method and a device for stopping a fuel-injection internal combustion engine, in which the injection pump is of the multi-cylinder single-housing type, comprising in supplying the housing of the pump with pressurized gas for separating the pump plungers...
04/01/1980
4150654Engine and fuel shutdown control
A solenoid-operated fuel valve opens automatically when the engine is started to allow fuel to flow from a fuel tank to the engine and closes automatically when the engine throttle is moved to fuel-off position to shut down flow of fuel through the govern...
04/24/1979
4108129Safety group for diesel engines
The invention relates to a safety group for diesel engines, comprising a safety shutoff device, an overspeed mechanism, and an oil pressure collapse mechanism, in which the axis of the plunger forcing the fuel rack to off position has a radially extending...
08/22/1978
4106469Automatic motor kill system
The specification discloses a motor kill system for automatically shutting off and killing an internal combustion engine to prevent damage to the engine from obstruction of the air cleaning system. The motor kill system includes a vacuum switch operating ...
08/15/1978
4103652Auxiliary engine governing system
A vehicle having a transmission with a power take-off employs a governor for regulating engine speed during use of the power take-off; vacuum responsive motor means operatively connected to the engine throttle serves to control the speed of the engine; th...
08/01/1978
4102316Hydromechanical shutoff for an internal combustion engine
An engine shutoff device includes provisions to shut down an internal combustion engine under conditions outside the normal operating limits of the engine. While the engine is idling, shutdown is initiated by fuel cutoff when engine oil pressure is below ...
07/25/1978
4098252Method and apparatus for carrying out the method to control a multi-cylinder internal combustion engine
A method and apparatus for controlling a multi-cylinder internal combustion engine by connecting or disconnecting one or several of the cylinders with a throttling device provided in the suction system of the internal combustion engine; simultaneously wit...
07/04/1978
4029074Fuel valves
This is a valve for controlling the flow of fuel to an internal combustion engine in response to engine coolant temperature thereby preventing engine operation at full load above a selected coolant temperature....
06/14/1977
3977372Carburetor vacuum shutoff control valve
A carburetor vacuum shutoff control valve for motor vehicles includes a snap-action spring which senses the the sudden vacuum increase in the carburetor each time the vehicle decelerates. The spring opens the valve during deceleration to allow air to pass...
08/31/1976
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