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Class 123/339.19 - By engine speed error feedback


Subclass of Class 123 - Internal-combustion engines
Definition: Subject matter wherein the electrically powered adjusting
No. of patents: 144
Last issue date: 05/12/2009


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NumberTitleIssue Date
7530344Method for controlling an internal combustion engine in the neutral position
The invention relates to a method for controlling an internal combustion engine in the neutral position, comprising the following steps: the actual idle rotational speed is measured, the actual idle rotational speed is compared to a desired idle rotational speed, co...
05/12/2009
7361067Method for controlling the acceleration of a marine vessel used for water skiing
A system is provided which stores data relating to the operation of a marine vessel during a water skier launch procedure. The data can include a plurality of throttle handle positions that are stored at a frequency which is suitable for reproducing the movement pro...
04/22/2008
7328686System and method to control cylinder activation and deactivation
Engine cylinder reactivation from a fuel-cut state is controlled based on a calculated future engine speed and a minimum allowable engine speed. The future engine speed is calculated based on the current rate of change of engine speed and a duration required to reac...
02/12/2008
7322344Fuel injection control apparatus for internal combustion engine
An internal combustion engine includes a direct injector for injecting fuel directly into a combustion chamber of the engine, an intake passage injector for injecting fuel into an intake passage of the engine, and a vaporized fuel processing unit for purging purge g...
01/29/2008
7324888Computationally efficient data-driven algorithms for engine friction torque estimation
New algorithms for real-time estimation of the engine friction torque are developed. Engine friction torque can be estimated in a fuel cut-off state and at engine idle. New recursive and computationally efficient data-driven algorithms are developed for adaptation o...
01/29/2008
7311080Idle speed controller of internal, combustion engine, and internal combustion engine controller and internal combustion engine
An idle rotational speed controller of an internal combustion engine includes an intake path for supplying air to a combustion chamber. An auxiliary intake path communicates the intake path on upstream and downstream sides of a throttle valve in the intake path. An ...
12/25/2007
7295915Method for compensating for accessory loading
An internal combustion engine includes an advanced vehicle system controller (VSC) that calculates a total power demand to meet a driver wheel power demand plus any accessory loads and independently schedules an engine speed and load operating point to meet the tota...
11/13/2007
7249583System for controlling valve timing of an engine with cylinder 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, ...
07/31/2007
7243011Hybrid transmission launch algorithm
A launch system for a hybrid vehicle includes a pump, an electronic throttle, a sensor, and a hybrid control module. The pump is driven by an internal combustion engine and provides pressurized fluid to a transmission. The electronic throttle selectively adjusts air...
07/10/2007
7236874Torque control apparatus and vehicle control system having the same
In an engine torque loss computing section, a pump loss computing section computes a pump torque loss, and a frictional loss computing section computes a frictional torque loss. The pump torque loss and the frictional torque loss are summed to obtain an engine torqu...
06/26/2007
7236877Chipped engine control unit system having copy protected and selectable multiple control programs
The present invention discloses a method for preventing a control program written in a first engine control unit (ECU) from running in a second ECU, comprising obtaining an ID number from the first ECU; encrypting the ID number; writing the encrypted ID number into ...
06/26/2007
7222604Method and device for controlling a drive unit
A method and a device for controlling a drive unit which allow an improved transition between idle regulation and drive unit propulsion are provided. A setpoint value for an output variable of the drive unit is predefined, it being possible to modify the setpoint va...
05/29/2007
7210450Intake control apparatus and method for internal combustion engine
An intake control apparatus for an internal combustion engine includes a variable valve operating mechanism capable of varying a lift and operation angle of an intake valve continuously and a control unit that controls an intake air amount by varying the lift and op...
05/01/2007
7207856Engine 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...
04/24/2007
7200449Control system for plant and air-fuel ratio control system for internal combustion engine
A control system for a plant, having an identifier and a controller. The identifier identifies model parameters of a controlled object model which is obtained by modeling the plant. The controller calculates a control input to the plant so that an output from the pl...
04/03/2007
7188594Apparatus and method for controlling variable valve actuation mechanism
In an internal combustion engine equipped with a variable valve actuation mechanism, which varies a lift amount of an intake valve, when the lift amount is forcedly controlled at the minimum to learn a detection result of the lift amount at that time, a throttle ope...
03/13/2007
7182064Method for regulating the rotational speed of an internal combustion engine
A method for closed-loop speed control of an internal combustion engine that is provided as a generator drive or a marine propulsion unit, including the steps of: computing a first control deviation (dR1) from a speed variance comparison; computing a first se...
02/27/2007
7167790Engine control system
A control system for controlling a control target apparatus provided to an engine includes a main ECU and a sub-ECU. The main ECU calculates at least one operational command value according to an operational state of the engine. The at least one operational command ...
01/23/2007
7162996Engine braking methods and apparatus
Methods and apparatus for providing bleeder-type and compression-release engine braking in an internal combustion engine are disclosed. For bleeder-type engine braking, the exhaust valve is maintained at a small and relatively constant lift throughout all or much of...
01/16/2007
7158868Method and device for consistent bidirectional analysis of engine characteristics map data
A method and a device (10) for consistent bidirectional analysis of engine characteristics map data in an engine characteristics map are described. The engine characteristics map data represents interlinked technical variables. In this method, first a charact...
01/02/2007
7131408Method and arrangement for controlling an internal combustion engine
The invention is directed to a method and an arrangement for controlling an internal combustion engine (20) which achieve an optimal efficiency in different operating states. An opening time of an inlet valve (5) of a cylinder (1) of the engine ...
11/07/2006
7111450Method 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
7073494System and method for estimating fuel vapor with cylinder 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, ...
07/11/2006
7069903Idle speed control for lean burn engine with variable-displacement-like characteristic
A method is disclosed for controlling operation of a 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 pum...
07/04/2006
7072759Method for controlling an internal combustion engine generator unit
An actual run-up ramp is measured for internal combustion engine-generator unit during a starting process. The actual run-ramp is then set as the set run-up ramp. In this way, the closed-loop control of the internal combustion engine-generator unit adapts itself to ...
07/04/2006
7056165Control system for outboard motor
The control system establishes an engine warm-up protocol based, at least in part, on elapsed time from engine start. The control system provides a reduced reliance on engine temperature as a basis for determining an appropriate engine idle speed. The control system...
06/06/2006
7054738Method for estimating engine friction torque
Algorithms for real-time estimation of the engine friction torque in a vehicle powertrain are disclosed. Engine friction torque is estimated at start and at engine idle. Recursive and computationally efficient algorithms allow prediction of friction torque for a wid...
05/30/2006
7047932Method to improve fuel economy in lean burn engines with variable-displacement-like characteristics
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...
05/23/2006
7040284Internal combustion engine controller
A torque correspondence value (e.g., estimated indicated torque) is determined. The degree of torque correspondence value variation in a plurality of previous cycles is digitized as a variation index value (e.g., locus length). If the variation index value is smalle...
05/09/2006
7036484Idle speed control using alternator
An engine system includes an engine, an alternator, a load, and a controller that communicates with the engine, the alternator, and the load. The controller signals the engine to drive the alternator when the engine idles. When a load increase on the engine is detec...
05/02/2006
7035729Method for controlling the speed of a torque-controlled internal combustion engine
A method for controlling the speed of a torque-controlled internal combustion engine in which the generation of the drive torque is regulated by actuators which are controlled from a control value of the instantaneous torque and by a control value of the predicted t...
04/25/2006
7025039System and method for controlling valve timing of an engine with cylinder 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, ...
04/11/2006
7026783Drive system
A drive system includes a central power supply with a line-commutated converter and a DC/DC converter connected downstream of the line-commutated converter, and a plurality of inverters, each inverter having an output connected a load, for example a motor, and a DC ...
04/11/2006
7021281Engine idle control system
An internal combustion engine idle speed control system includes a first valve control mechanism that adjusts a first operating parameter of a first cylinder valve. A control module determines an idle speed error and generates a first control signal to the first val...
04/04/2006
7017692Drivetrain controller for a motor vehicle with at least two power units and a gear-box
A torque set value is determined in a pedal interpretation unit (20) from a parameter which characterizes the drivers command. Operating parameters for the vehicle are evaluated and classified in a driver and situation recognition unit (21). A set oper...
03/28/2006
7013868Accelerator signal offset system
A disclosed accelerator pedal offset system includes a first connector that can be coupled to an accelerator pedal of a motor vehicle and a second connector that can be coupled, in place of the accelerator pedal, to an engine control module of the vehicle. The secon...
03/21/2006
7000602Engine system and fuel vapor purging system with cylinder 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, ...
02/21/2006
6990953Idle rotation control of an internal combustion engine
A controller 21 controls an intake air flow rate via an electronic throttle 14 based on a feedback correction amount set so that a rotation speed (NE) of an internal combustion engine (11) during idle running gradually approaches a target value ...
01/31/2006
6959691Device and method for controlling air volume during idle operation
To permit easy and adequate setting of a gain in an internal combustion engine (hereinafter be called an “engine”) for the surer stabilization of an idle speed, the present invention provides a device for controlling an air volume during an idle operation of the...
11/01/2005
6948477Idle speed control device
An idle speed control device for smoothly executing a transition from an idle state where engine speed is feedback controlled to a non-idling state where open-loop control is employed. The device includes an idling state determination section for determining whether...
09/27/2005
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