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7621252 |
Method to optimize fuel economy by preventing cylinder deactivation busyness
A method of transitioning an engine to a cylinder deactivation mode may include determining a ratio of time that the engine is operating in the cylinder deactivation mode for an engine operating...
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7614212 |
Engine control apparatus
An engine control apparatus is configured to prevent damage to a catalytic converter caused by the occurrence of temperature differences. The engine control apparatus is particularly useful in a...
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7610903 |
Multicylinder internal combustion engine
A multicylinder internal combustion engine, which can simplify its control and is advantageous against thermal loads or vibrations includes a cylinder head with intake valves and exhaust valves...
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7600503 |
Flex-fuel variable displacement engine control system and method
A method for operating an engine having at least one cylinder that may be deactivated and a fuel system operating with an alcohol fuel blend, comprising of adjusting a range of operating parameters...
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7584606 |
System for assisting the regeneration of depollution means integrated in an exhaust line of a vehicle diesel engine
System in which the depollution apparatus is associated with an oxidation catalyst-forming device, and the engine is associated with a common rail for feeding it with fuel and adapted to implement...
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7571707 |
Engine mode transition utilizing dynamic torque control
A method of operating an engine having a plurality of cylinders, the method comprising of transitioning the engine from a first mode to a second mode, and temporarily adjusting an amount of torque...
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7565899 |
Engine fueling control during cylinder valve mode transitions
A method of control fueling of a cylinder in an internal combustion engine, the cylinder having at least two intake valves, the method comprising of operating in a first mode with one active intake...
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7559309 |
Method to start electromechanical valves on an internal combustion engine
A system and method to improve electromechanical valve control in an internal combustion engine. The method adjusts valve current to meet a wide range of engine operating conditions.
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7558667 |
Method for detecting assembled state of gas sensors and apparatus for detecting assembled state of gas sensors
A vehicle including plural gas sensors assembled in plural exhaust systems, detecting an oxygen concentration in an exhaust gas, where an air-fuel ratio feedback control is carried out together...
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7555896 |
Cylinder deactivation for an internal combustion engine
A system and method to control engine valve operation during periods of cylinder deactivation of an internal combustion engine. Electromechanical valves are controlled in a manner to reduce fuel...
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7549408 |
Flex-fuel variable displacement engine control system and method
A method for operating an engine having at least one cylinder that may be deactivated and a fuel system operating with an alcohol fuel blend, comprising of adjusting a range of operating parameters...
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7549406 |
Engine shut-down for engine having adjustable valve timing
A method for discontinuing combustion in a cylinder of an internal combustion engine having an intake manifold and an emission control device coupled downstream of thereof, where the cylinder has...
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7546827 |
Methods for variable displacement engine diagnostics
Methods and systems are provided for monitoring cylinder valve deactivation in an engine operating with a plurality of cylinder valves. One example method comprises, sensing a plurality of cylinder...
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7532973 |
Control apparatus of direct injection internal combustion engine
A direct injection internal combustion engine control apparatus used in an idling stop vehicle or the like, which can reduce residual fuel generated in a combustion chamber in an engine stop time,...
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7527032 |
Method for controlling the operation of a cylinder for an internal combustion engine
The invention relates to a method for controlling the operation of a cylinder for a multi-cylinder four-stroke internal combustion engine, wherein said cylinder interacts with at least one fuel...
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7523734 |
System to reduce crankshaft speed variations
A system to reduce rotational speed variations of a crankshaft includes a controller, a braking device, and a control module. The controller deactivates at least one cylinder in an internal...
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7503312 |
Differential torque operation for internal combustion engine
A method of operating an internal combustion engine having a plurality of cylinders including at least a first cylinder and a second cylinder, the method comprising firing the first cylinder and...
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7503296 |
Cylinder deactivation apparatus
An internal combustion engine having a cylinder block defining a plurality of cylinders at least half of which are selectively deactivatable by a plurality of switching hydraulic lifters. A source...
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7499788 |
Method and device for operating an internal combustion engine having a plurality of cylinder banks
A method and a device for operating an internal combustion engine having a plurality of cylinder banks which allow a simple diagnosis of a faulty deactivation of the gas exchange of at least one...
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7497805 |
System and method to control fuel injector reactivation during deceleration fuel shut off
A method of controlling fuel injection in an engine of a vehicle comprises reactivating fuel injectors based on release or decrease of driver braking during deceleration fuel shut off operation....
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7487035 |
Cylinder abnormality diagnosis unit of internal combustion engine and controller of internal combustion engine
It is determined whether an engine operating state is within a specified operating range. When the engine operating state is within the specified operating range, the air-fuel ratio of an i-th...
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7481039 |
Engine system and method for efficient emission control device purging
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...
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7472014 |
Fast active fuel management reactivation
An engine control module includes a valve control module that disables intake and exhaust valves corresponding to a cylinder that includes a mass of intake air. An engine cycle module determines a...
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7469672 |
System and method for operation of an engine having multiple combustion modes and cylinder deactivation
A method of operating an engine having a plurality of combustion cylinders configured to produce an engine output, including adjusting a condition of the engine to achieve combustion by each of...
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7469530 |
Fuel cut control apparatus of internal combustion engine
The exhaust gas purifying catalysts sometimes generate H 2 S which emits exhaust odor under reducing atmosphere. However, in the ordinary air-fuel ratio control, it takes much time to establish...
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7467614 |
Pedal position and/or pedal change rate for use in control of an engine
Systems and methods for using pedal position and/or pedal change rate in the fuel side and/or air side control of an engine. By knowing the pedal position and/or pedal rate, an engine controller...
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7458352 |
Switchable valve drive element of an internal combustion engine
A switchable valve drive element of an internal combustion engine can be actuated hydraulically. A valve tappet which can be displaced axially in a bore of the machine housing by the cam of a...
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7444967 |
Variable valve device for internal combustion engine
A variable valve device includes a camshaft which is rotatably provided in an internal combustion engine while having a cam, a rocker shaft which is arranged next to the camshaft, a valve which is...
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7438665 |
Control 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 plurality of...
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7433774 |
Control 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...
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7430854 |
Air fuel ratio controller for internal combustion engine for stopping calculation of model parameters when engine is in lean operation
An air fuel ratio controller for an internal combustion engine includes an exhaust gas sensor, an identifier and a control unit. The exhaust gas sensor detects oxygen concentration of exhaust gas....
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7428893 |
Electronic flow control valve
An internal combustion engine is provided that includes a high pressure feed line, and a plurality of fuel injectors fluidly connected to the high pressure feed line, each being operable to inject...
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7426915 |
System and method for reducing vehicle acceleration during engine transitions
A method for controlling an engine to reduce vehicle shuffle mode vibration during mode transition. The engine includes multiple cylinders, each with at least one electrically actuated valve, and...
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7395813 |
Method of controlling the intake and/or the exhaust of at least one deactivated cylinder of an internal-combustion engine
A method controls the intake and/or the exhaust of at least one deactivated cylinder ( 10, 12, 14, 16 ) of an internal-combustion engine operating in four phases. The cylinder includes an intake...
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7395792 |
Deactivation 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...
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7395668 |
Turbo charged diesel-type piston engine and method for controlling such an engine
A piston engine and a method for controlling a diesel-type piston engine including at least one combustion chamber formed by a cylinder, a movably arranged piston in each cylinder, which piston is...
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7389762 |
System and method for controlling valve actuators
A system for communicating information between a first controller and a second controller is presented. The system is designed to improve and increase the robustness data transferred between two...
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7377254 |
Extending operating range of a homogeneous charge compression ignition engine via cylinder deactivation
An HCCI engine has the ability to operate over a large load range by utilizing a lower cetane distillate diesel fuel to increase ignition delay. This permits more stable operation at high loads by...
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7377250 |
System and method for balancing an engine during cylinder cutout
The method includes reducing output of one or more cylinders of an engine system without reducing output of the remaining cylinders of the engine system. The method also includes reducing imbalance...
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7367180 |
System 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...
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7363915 |
Method to control transitions between modes of operation of an 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...
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7360356 |
Exhaust gas purifying apparatus for internal combustion engine
A main control computer commands a second sub-control computer to perform a reduced-cylinder operation when the coolant temperature detected by a coolant temperature sensor is greater than or equal...
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7357019 |
Faulty lifter oil manifold assembly solenoid diagnostic system
A diagnostic system that detects a faulty lifter oil manifold assembly solenoid includes a current measurement module, a time delay module, a voltage measurement module, and a diagnostic module....
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7353795 |
Method for cylinder diagnostic test in an internal combustion engine
In a multi-cylinder piston engine, a diagnostic method of determining if there is low compression in a cylinder ( 5 ) by using a split engine brake ( 18 ) and turning the engine brake on during one...
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7350499 |
Control device of cylinder reducing operation of multi-cylinder engine
A control device for cylinder reducing operation of a multi-cylinder engine for a vehicle controls the number of working cylinders in the engine more appropriately for fuel economy while ensuring...
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7343902 |
Dual 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,...
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7331332 |
Method 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...
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7328686 |
System 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...
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7314034 |
System 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...
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7302924 |
Switchable 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...
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