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Class 123/198F - Cylinder cut out


Subclass of Class 123 - Internal-combustion engines
No. of patents: 861
Last issue date: 05/15/2012


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NumberTitleIssue Date
7349789Method for controlling supply of fuel to a combustion engine
A method for controlling supply of fuel to a combustion engine, e.g. a self-igniting internal combustion engine in a vehicle, having a first group of cylinders and a second group of cylinders, the method comprising the steps of: determining if a demanded total fuel ...
03/25/2008
7349791Control apparatus for internal combustion engine
An acceleration request is detected in accordance with an accelerator opening PA (time t3 in FIG. 5B). If the detected acceleration request is a moderate acceleration request, an idle opening TA0 is set as an actual throttle opening TA (FIG. ...
03/25/2008
7343902Dual combustion mode engine
A system and method to provide a desired torque increase from an engine in which some cylinder operate in spark ignition (SI) combustion mode only and some cylinders operate in homogeneous-charge, compression-ignition (HCCI) combustion mode only are disclosed. Such ...
03/18/2008
7340338Method and device for operating an internal combustion engine
A method and a device for operating an internal combustion engine, particularly of a vehicle, having several cylinder banks are provided, which allow for a simplified control. For this purpose, a resulting requirement is formed by coordinating several output variabl...
03/04/2008
7334559Evaporative fuel supply apparatus
A canister is furnished to store evaporative fuel. A purge line is furnished to ensure that the canister communicates with an internal combustion engine intake path. The purge line is provided with a D-VSV (purge control valve) that controls the continuity of the pu...
02/26/2008
7334549Multi-stroke cylinder operation in an internal combustion engine
A method to control valves during multi-stroke cylinder operation. Valves are controlled to improve emissions and engine torque resolution. ...
02/26/2008
7331332Method for operating an internal combustion engine
An internal combustion engine includes multiple combustion chambers. The supply of fuel into at least one subset of the combustion chambers can temporarily be interrupted. It is provided that the fuel be injected into the combustion chambers directly and during a sw...
02/19/2008
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
7314034System for verifying cylinder deactivation status in a multi-cylinder engine
In a multi-cylinder internal combustion engine having intake valve deactivation apparatus providing de-activation of the intake valves of selected cylinders during engine operation, correct cylinder activation status is verified by measuring gas pressure in a condui...
01/01/2008
7311079Engine system and method 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, ...
12/25/2007
7308962Control system for cylinder cut-off internal combustion engine
In a control system for an internal combustion engine having a plurality of cylinders and mounted on a vehicle, in which the engine operation is switched based on the throttle opening between a full-cylinder operation in which all of the cylinders are operative and ...
12/18/2007
7308879Deactivation roller hydraulic valve lifter
A deactivation valve lifter includes a lifter body. The lifter body has a first end configured for engaging a cam of an engine and at least one annular pin chamber. A pin housing includes a pin housing bottom. The pin housing bottom defines at least one pin stop ape...
12/18/2007
7308959Displacement on demand with regenerative braking
A regenerative braking system for a vehicle includes a displacement on demand (DOD) engine having cylinders, a battery, and an electric machine having motor and generator modes. The electric machine is selectively driven by a wheel of the vehicle. A controller detec...
12/18/2007
7302921Detection of a specific faulted DOD electrohydraulic circuit
A fault detection system for detecting a fault in a lifter oil manifold assembly (LOMA) of a displacement on demand engine that is operable during transition from activated and deactivated modes includes a first fluid circuit of the LOMA that selectively provides pr...
12/04/2007
7302924Switchable drag lever of a valve timing mechanism of an internal combustion engine
A switchable drag lever (1) of a valve timing mechanism of an internal combustion engine having an outer lever (2), and inner lever (5) extending in the cut-out (3) of the said outer lever (2) between its side walls (4), the...
12/04/2007
7299777Fastening of a bearing bolt to a roller tappet
A connection of a bearing bolt (6) in a cylindrical housing (1) of a roller tappet (2) that is actuated in a direction of a longitudinal axis (Z) is provided, especially for a tappet push-rod valve drive of an internal combustion engine. The bea...
11/27/2007
7299778Switchable cam follower
The invention proposes a switchable cam follower (1) for a valve train of an internal combustion engine, said cam follower comprising two elements (2, 3) telescoped into each other and, axially displaceable relative to each other. A bore (4) com...
11/27/2007
7296548Deactivation roller hydraulic valve lifter
A deactivation valve lifter includes a lifter body. The lifter body has a first end configured for engaging a cam of an engine and at least one annular pin chamber. A pin housing includes a pin housing bottom. The pin housing bottom defines at least one pin stop ape...
11/20/2007
7290517Automatic start-up of an auxiliary power unit
An auxiliary power unit automatic start-up system is configured to assist a main engine start of a machine. The auxiliary power unit automatic start-up system may include an auxiliary power unit and a controller. The controller may monitor a parameter of the machine...
11/06/2007
7290516Electrical connection device for injection devices of internal combustion engines
In order to simplify an electrical connection device for injection devices, to make them more reliable and to simplify their installation, it is proposed that the electrical connection device has a printed circuit board (1) with printed circuit board tracks (...
11/06/2007
7287513Method for controlling the intake valves of an internal combustion engine
The invention relates to a method for controlling the opening and closing of the intake valves of an internal combustion engine with a direct fuel injection system, comprising at least one first intake valve and a second intake valve per cylinder, wherein each valve...
10/30/2007
7284514Engine control system
A system for improving engine operation during a condition of engine controller degradation is presented. According to one aspect of the description, the engine may continue to operate if the performance of one engine controller is degraded. ...
10/23/2007
7278392Method for operating a hybrid vehicle and hybrid vehicle with a multi-cylinder internal combustion engine coupled to an electric motor
In a method for operating a hybrid vehicle with a combustion engine coupled to an electric motor having at least one inlet and one outlet valve per cylinder, a variable valve control, and a fuel injection device, with a first partial power, from the overall drive po...
10/09/2007
7278940Powertrain with electrically variable transmission providing improved gradeability
A powertrain includes an engine with an engine output member and a transmission with two motor/generators and a transmission input member operatively connected to the engine output member. A control unit is configured to selectively cause a device to resist or preve...
10/09/2007
7278391Cylinder deactivation torque limit for noise, vibration, and harshness
An engine control system for controlling the engine to transition between an activated mode where all cylinders are active and a deactivated mode where less than all cylinders are active is provided. The system includes: a noise vibration and harshness (NVH) limit m...
10/09/2007
7275511Intake manifold assembly
An intake assembly is provided for a sequentially fired eight cylinder V-type internal combustion engine including a cylinder block having a first band of cylinders and a second bank of cylinders. The assembly includes first, second, third, and fourth intake plenums...
10/02/2007
7273026Roller follower body
The present invention relates to a roller follower, comprising an outer surface, enclosing a first cavity, a second cavity, and a transition opening, wherein the first cavity includes a first inner surface configured to house a cylindrical insert the second cavity i...
09/25/2007
7263956Valve lifter assembly for selectively deactivating a cylinder
A valve lifter assembly for deactivating a cylinder in an internal combustion engine. The valve lifter assembly is provided with a plunger movably disposed within a bore of a main body member to controllably isolate the cam lift from the rocker arm and valve of the ...
09/04/2007
7261282Carburetor 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
7260467Cylinder deactivation method to minimize drivetrain torsional disturbances
A system and method are described for reducing engine vibration during cylinder deactivation in selected operating conditions. The method utilizes open valve deactivation to better match the cylinder pressure of deactivated cylinders to combusting cylinders. This mo...
08/21/2007
7255075Engine valve actuation system
An engine valve actuation system is provided. An intake valve is moveable between a first position to prevent a flow of fluid and a second position to allow a flow of fluid. A cam assembly is connected to move the intake valve between the first position and the seco...
08/14/2007
7255095Dual combustion mode engine
In an engine in which a first portion of engine cylinders operate in HCCI combustion mode only and a second portion of engine cylinders operate in SI combustion mode only, two EGR ducts and valves are provided: a first EGR duct adapted to provide flow from an exhaus...
08/14/2007
7255066Valve selection for an engine operating in a multi-stroke cylinder mode
A method to control valve patterns in a cylinder operating in a multi-stroke cylinder mode. Valves are controlled to improve drivability and emissions. ...
08/14/2007
7255331Carburetor with adjustable air bypass
A carburetor assembly includes a base plate (12) having an air bypass passage (30) extending there through, with air channels (71-74) formed in the surface of the base plate intersecting the air bypass passage and each of the butterfly bo...
08/14/2007
7249584Impulse charging control to extend displacement on demand range
An engine control system for controlling engine operation in activated and deactivated modes in a displacement on demand (DOD) engine includes an impulse charging device that is disposed upstream of an intake port of a cylinder of the DOD engine and that is operable...
07/31/2007
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
7246673Hybrid powertrain with engine valve deactivation
A vehicle powertrain includes an engine and an electric motor in parallel hybrid combination. The engine includes a plurality of cylinders and a plurality of selectively deactivatable cylinder intake and exhaust valves so that every cylinder in the engine is charact...
07/24/2007
7246584Force-transmitting arrangement for a valve train of an internal-combustion engine
A force-transmitting arrangement (4) for a valve train (1) of an internal-combustion engine (2) is provided with hydraulic valve play compensation device (6) with a hollow cylindrical compensation piston (13). This borders, on one ...
07/24/2007
7246583Method and apparatus for diagnosing valve lifter malfunction in a lift on demand system
A method for diagnosing malfunctions of switching valve lifters includes sensing variations in pressure of trapped oil in a drive chamber of a hydraulic camshaft drive, such as a cam phaser, comparing peak oil pressure readings in the drive chamber resulting from th...
07/24/2007
7246609Internal combustion engine having cylinder disablement
A multi-cylinder internal combustion engine having an exhaust system with an exhaust emission after-treatment device for exhaust gases from the cylinders, an air supply system for supplying fresh air to the cylinders, a fuel supply system for supplying fuel to each ...
07/24/2007
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