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Class 123/406.46 - Acceleration or deceleration responsive


Subclass of Class 123 - Internal-combustion engines
Definition: Subject matter under subclass 406.45 wherein the
No. of patents: 47
Last issue date: 05/06/2008


1    
NumberTitleIssue Date
7367322Controller of an internal combustion engine
When the first fuel injection is performed after reversion from the fuel cut, the fuel pulse width Ka·INJ.PW is set so that a fuel supply amount is greatly increased in relation to an intake air amount, and the ignition timing is set to the first retarded ignition ...
05/06/2008
7287514Fuel supply control method and apparatus of internal combustion engine
The invention provides a fuel supply control method and apparatus in which an air fuel ratio does not become rich even if an acceleration and deceleration operation is repeated for a short time in the case that a time lag with respect to a response from a detection ...
10/30/2007
7191041Method for diagnosing as to signal plausibility with a speed sensor of a motor vehicle
A method is for making a diagnosis as to signal plausibility in a speed sensor of a motor vehicle. In the method, the speed sensor outputs a pulse sequence to an evaluation circuit in dependence upon the speed of the vehicle and, in a steady-state operating conditio...
03/13/2007
7178494Variable valve timing controller for internal combustion engine
An ECU calculates an engine speed for calculating a camshaft phase based on a time period Tθ in which a crankshaft rotates a sampling angle θ. The camshaft phase is derived from a time difference between output timing of a cam angle signal and output timing of a c...
02/20/2007
7140351Method and device for operating an internal combustion engine
A method and a device for operating an internal combustion engine allow an optimal restriction of the ignition angle. In this context, a limit value for an ignition angle is specified as a function of an operating point of the internal combustion engine. The limit v...
11/28/2006
7134412Method for increasing the reproducibility of the start-up during start-stop operation of an internal combustion engine
This invention relates to a method for increasing the reproducibility of the start-up in the start-stop operation of an internal combustion engine of a motor vehicle with start optimization. The reproducibility of the start-up is increased by reducing a maximum spee...
11/14/2006
7059116Power output apparatus and control method for same
During the catalyst warm-up period, when control enabling reduction in hydrocarbons is not executed in gasoline engine 100, the opening of the throttle valve 101 is made smaller in order to reduce the hydrocarbon discharge. During the catalyst warm-up ...
06/13/2006
7055502Single cylinder engine and vehicle provided with the same
A single cylinder engine includes an engine body having a cylinder and a combustion chamber, an intake opening that faces the combustion chamber, and an intake passage in communication with the combustion chamber through the intake opening, a piston provided in the ...
06/06/2006
7027908Method and device for controlling an internal combustion engine on a vehicle
A method and a device for controlling an internal combustion engine of a vehicle, in which a performance quantity of the internal combustion engine or of the vehicle is limited to a predefined limit value. For the limiting, a control of the air supply to the interna...
04/11/2006
7021259Variable valve control apparatus and method in internal combustion engine
In an internal combustion engine, which is provided with a variable valve mechanism that varies an open/close characteristic of an intake valve, a target open/close characteristic of the intake valve is determined. Simultaneously, a control speed at a time when the ...
04/04/2006
6976472Ignition circuit for an internal combustion engine
An ignition circuit for a two-stroke engine has a spark plug connected via an ignition switch to a voltage source. The ignition switch is actuated via a control circuit to close the ignition switch in dependence upon the crankshaft angle and the rpm of the engine an...
12/20/2005
6973901Variable valve control apparatus and method in internal combustion engine
In an internal combustion engine provided with a variable valve mechanism that varies an open/close characteristic of an intake valve, a target open/close characteristic of the intake valve is determined and at the same time, a control speed of when the intake valve...
12/13/2005
6957172Complex signal decomposition and modeling
A system, method and program product for monitoring a complex signal for ultrasensitive detection of state changes, or for signature recognition and classification is provided. A complex signal is decomposed periodically for empirical modeling. Wavelet analysis, fre...
10/18/2005
6944530System and method for air flow and EGR flow estimation
An exhaust gas recirculation system directs exhaust gasses from an exhaust manifold to an intake manifold of an internal combustion engine. The exhaust gasses travel from the exhaust manifold, first passing through a flow control valve and then through a measuring o...
09/13/2005
6892701Method and apparatus for controlling locomotive smoke emissions during transient operation
A method and apparatus for reducing the smoke emissions of a railroad locomotive during throttle notch changes. For certain throttle notch increases the present invention advances the engine timing angle and controls application of the load at the new throttle notch...
05/17/2005
6843230Control apparatus and control method of internal combustion engine
In an internal combustion engine provided with a variable valve mechanism that varies a valve operating characteristic (valve lift amount and valve operating angle) of an intake valve, the valve operating characteristic of the intake valve is detected and an intake ...
01/18/2005
6817338Idle speed control system
A system and method are disclosed for controlling idle speed of an internal combustion engine. The system includes an engine speed sensor producing an engine speed signal indicative of a rotational engine speed of an internal combustion engine, and a control circuit...
11/16/2004
6732708Automotive engine control apparatus
In an automotive engine control apparatus used for a multi-cylinder engine where both an injection coil and an ignition coil are employed with each of multiple cylinders, abnormal states are systematically detected, while an injection system is mutually interconnect...
05/11/2004
6584391Engine torque calculation
A torque calculator and method for providing real time data that measures net torque output of a running engine in a motor vehicle. Gross torque production is calculated using engine speed and fueling data. Torque losses due to accessories, pumping, and f...
06/24/2003
6047681Process and apparatus for adjusting the torque of an interal-combustion engine
The invention provides a process and an apparatus for controlling the engine torque of an internal-combustion engine. A dynamic desired torque component is determined from a demanded desired engine torque, and is used to determine a corresponding displace...
04/11/2000
5697340Engine cold startup controller
A fuel supply amount to a spark ignition engine is increased and an ignition timing of an air-fuel mixture is retarded during cold startup. At the same time, it is determined whether or not the air-fuel ratio of the air-fuel mixture is richer than a prede...
12/16/1997
5608632Self-contained sequential-throttle-body-injection engine control system
An engine control system that is configured to be attached to the intake port or intake manifold of a reciprocating engine. The system can be designed to allow installation as original equipment or as a retrofit unit. In either case, the system provides t...
03/04/1997
5537977Method of estimating exhaust gas recirculation in an intake manifold for an internal combustion engine
A method of estimating exhaust gas recirculation in an intake manifold for an internal combustion engine includes the steps of determining a volumetric efficiency value of the intake manifold, determining whether a speed of the engine is accelerating, get...
07/23/1996
5345908Electronic control device for an internal combustion engine
An electronic control device for an internal combustion engine having a control unit for detecting a running state of an engine, and which controls a fuel quantity or an ignition timing of the engine in accordance with the running state, where the electro...
09/13/1994
5239963Ignition timing control system for internal combustion engines
An ignition timing control system controls ignition timing of spark plugs of an internal combustion engine associated with a plurality of changeover devices, changeover of an operative state of each of which has influence upon output torque of the engine....
08/31/1993
5197431Ignition timing control system for engine
An ignition timing control system for an engine equipped with an automatic transmission corrects an ignition timing advance so as to retard ignition upon a demand to drop engine output torque when resumption of fuel injection is required after it has been...
03/30/1993
5172670Control method for an internal combustion engine and electronic control apparatus therefor
A method of controlling the operation of an internal combustion engine is performed by the steps of detecting operational conditions of the engine, and determining the required amount of fuel to be fed to each of the cylinders based upon the number of eng...
12/22/1992
5094209Ignition control system for a fuel injection internal combustion engine
A system for controlling an ignition timing control in a fuel injection internal combustion engine whereby, upon an acceleration of the engine, in addition to a synchronous injection carried out at a predetermined timing during one cycle of the engine, an...
03/10/1992
5070841Ignition timing control system for internal combustion engine
An ignition timing control system of the vehicle internal combustion engines which conducts ignition timing control retard adjustment during vehicle acceleration so as to eliminate vibration of the vehicle body caused by the sudden change in the engine ou...
12/10/1991
5069184Apparatus for control and intake air amount prediction in an internal combustion engine
An apparatus to calculate the intake pipe pressure using the degree of throttle opening and the engine speed, to use this intake pipe pressure to calculate a current intake pipe pressure, and to determine a predicted value from this current intake pipe pr...
12/03/1991
5058550Method for determining the control values of a multicylinder internal combustion engine and apparatus therefor
With regard to the engine control method which determines control variables for the individual cylinders of a multicylinder internal combustion engine independently of one another, this specification discloses improved control method and apparatus whereby...
10/22/1991
5042446Engine control system
An engine control system comprises a fuel injection valve, a plate disposed in an air intake passage so as to move according to the intake air flow rate, a fuel distributor including the above-mentioned plate and mechanically controlling fuel flow rate to...
08/27/1991
5016181Method and system for an engine ignition timing control
An ignition timing control system of an engine comprises an ignition timing correction quantity memory device for storing an ignition timing correction quantity, an ignition timing correction quantity retrieving device for retrieving the ignition timing c...
05/14/1991
5003950Apparatus for control and intake air amount prediction in an internal combustion engine
An apparatus to calculate the intake pipe pressure using the degree of throttle opening and the engine speed, to use this intake pipe pressure to calculate a current intake pipe pressure, and to determine a predicted value from this current intake pipe pr...
04/02/1991
4987888Method of controlling fuel supply to engine by prediction calculation
In a fuel supply control method of an automobile engine wherein a plurality of parameters representing an operating condition of the engine are measured, and a fuel supply quantity is determined based on the measured values so as to attain a target air-fu...
01/29/1991
4947816Control system for internal combustion engine with improved control characteristics at transition of engine driving condition
An engine control system introduces a technology of assuming actually required fuel amount to be delivered to each engine cylinder at opening timing of an intake valve of the engine cylinder. In order to derive the assumed fuel demand, a basic fuel supply...
08/14/1990
4919098Apparatus and method of electronically controlling engine
An electronic engine control method and apparatus, which detects acceleration of a vehicle in the travelling directions, derives its differential or displacement difference, i.e., derivative of acceleration, thereby detects the longitudinal oscillation st...
04/24/1990
4682577Method and apparatus for reducing NOx in internal combustion engine
A method of reducing the amount of nitrogen oxides (NOx) in an internal combustion engine in which the air/fuel ratio is controlled higher than a theoreticl air/fuel ratio during normal operation of a vehicle, characterized in that the air/fuel ratio is c...
07/28/1987
4649885Method and apparatus for the operation of an internal combustion engine
A method and apparatus for operating an internal combustion engine which includes a rate of air-flow measuring device for the supplied combustion air, a fuel-metering arrangement controlled thereby and an ignition point-adjusting mechanism; the operating ...
03/17/1987
4520783Method of controlling fuel injection and apparatus therefor
A fuel injection quantity is calculated on the basis of an engine speed and an engine load and is corrected by an output incremental value determined in accordance with acceleration and deceleration of an engine, at least. The position of an intake thrott...
06/04/1985
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