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9038596 Method and system for pre-ignition control  
Methods and systems are provided for addressing pre-ignition that may be induced in response to actions taken to mitigate a cylinder misfire. An amount of engine load limiting applied may be...
8688357 Control device for internal combustion engine  
The present invention relates to a control device for a spark-ignition internal combustion engine provided with a cylinder pressure sensor and aims to facilitate optimal control of a combustion...
8635005 Control device of internal combustion engine  
A control device of an internal combustion engine includes a filter processing portion which performs a filter processing on the vibration level extracted by the vibration level extraction...
8626372 Systems and methods for diagnosing an engine  
A condition of an engine is diagnosed based on information provided by signals from speed sensors associated with the engine or other signals associated with a generator operationally connected to...
8567372 Ignition system  
An ignition system (10) comprises a spark plug (12) having a first end (14) defining a spark gap (16) between a first electrode (18) and a second electrode (20). A transformer (46) comprises a...
8555831 Method for operating a two-stroke engine  
A two-stroke engine (1) has a cylinder (2) defining a combustion chamber (3) delimited by a piston (5). The piston (5) drives a crankshaft (7) which is rotatably journalled in a crankcase (4). The...
8555857 Method and apparatus for controlling spark timing in an internal combustion engine  
A method for operating a spark-ignition internal combustion engine includes controlling spark ignition timing responsive to a combustion charge flame speed corresponding to an engine operating...
8547104 Self power for ignition coil with integrated ion sense circuitry  
A self power circuit for ion sense circuitry is provided. The self power circuit is configured to supply the voltages required to generate and measure an ion current flow in a combustion chamber...
8538626 Systems and methods for diagnosing an engine  
Methods and systems are provided for an engine. A condition of the engine may be diagnosed based on a combustion torque profile of the engine estimated using signals from a generator operationally...
8469002 Combustion phasing control in spark-assisted HCCI combustion mode  
A method for controlling combustion in a multi-cylinder spark-ignition direct-injection internal combustion engine includes determining a desired combustion phasing for maintaining acceptable...
8447498 Control device for internal combustion engine  
Even when an engine is started in various combustion states, an excessive increase in engine speed at the start of the engine is suppressed without an influence of the combustion states and with...
8439012 Method and system for engine control  
Methods and systems are provided for engine torque control. Mutually exclusive airflow adjustments and spark adjustments are used to provide accurate engine torque control when operating near...
8401762 Engine control system with algorithm for actuator control  
An engine control apparatus which may be employed in automotive vehicles. The engine control apparatus is equipped with a controlled variable arithmetic expression which defines correlations...
8392094 Control apparatus for an internal combustion engine  
A control apparatus for an internal combustion engine includes: an abnormal combustion detection unit for detecting an abnormal combustion due to self-ignition occurring; a pre-ignition...
8370065 Engine control system with algorithm for actuator control  
An engine control apparatus which may be employed in automotive vehicles. The engine control apparatus is equipped with at least one of a combustion parameter or a controlled variable arithmetic...
8326517 Control device for internal combustion engine  
A control device for a spark-ignition internal combustion engine that sets ignition timing based on a target value of a predetermined combustion-related parameter correlated with a combustion...
8297256 Ignition control system for internal combustion engines  
An ignition control system for a spark ignition internal combustion engine has: over-advancing means for over-advancing an ignition time for a cylinder of the internal combustion engine beyond an...
8191532 Method and system for detecting and reducing engine auto-ignition  
A method and a control module for performing the same include a filter module filtering in-cylinder pressure signals using a filter to form filtered in-cylinder pressure signals. The control...
8176893 Engine combustion control using ion sense feedback  
A system and method for operating an engine having at least two spark plugs per cylinder include controlling at least one actuator to alter combustion within a selected cylinder such that the...
8132556 Ignition energy management with ion current feedback to correct spark plug fouling  
A system and method for operating an engine having ionization signal sensing include detecting plug fouling and controlling the engine using progressively more aggressive control strategies if the...
8122868 Method and system for estimating and reducing engine auto-ignition and knock  
A control system for an engine includes a heat-release rate (HRR) module, a first filter module, a second filter module, an auto-ignition energy determination module, and a corrective action...
7971571 Operation control method on the basis of ion current in internal combustion engine  
The present invention is an operation control method on the basis of an ion current in an internal combustion engine, the method comprising a step of detecting the ion current generated within a...
7836864 Internal-combustion-engine combustion condition detection apparatus and combustion condition detection method  
An internal-combustion-engine combustion condition detection apparatus is provided with an ignition means that makes an ignition plug ignite a fuel; an ignition control means that controls the...
7810469 Combustion control based on a signal from an engine vibration sensor  
Feedback control of an internal combustion engine is performed based on a signal from a vibration sensor and a crankshaft angle sensor. An energy factor can be computed based on these sensor...
7798123 Internal combustion engine control device  
An ion current corresponding to an amount of ion produced by combustion of air fuel mixture in a combustion chamber of an internal combustion engine is detected and an ion current parameter...
7774110 Failure diagnosis apparatus for vehicle  
A failure diagnosis apparatus for a vehicle is disclosed. The apparatus includes a diagnosis processing section for executing failure diagnosis processing on a device of the vehicle to generate a...
7735465 Method for operating an internal combustion engine  
An internal combustion engine includes a cylinder (2) wherein a combustion chamber (5) is formed. The engine also includes devices for metering fuel and combustion air as well as an ignition...
7673614 Internal-combustion-engine combustion condition detection apparatus and combustion condition detection method  
An internal-combustion-engine combustion condition detection apparatus is provided with an ignition means that makes an ignition plug ignite a fuel; an ignition control means that controls the...
7624718 Engine control system, vehicle having the same, method for calculating combustion center of gravity, and method for controlling engine  
An engine control system enables engine control to cause ignition timing to approximate MBT without necessarily measuring torque and combustion pressure. The negative ion current in an engine...
7597093 Humidity based control system for an internal combustion engine  
A humidity based control system for an internal combustion engine includes a calculation module and a calibration module. The calculation module determines a humidity of air used in a combustion...
7472686 Control apparatus and method and engine control unit for internal combustion engine  
A control apparatus and method, and an engine control unit for an internal combustion engine are provided for restraining a torque step and sudden fluctuations in rotation when an air/fuel mixture...
7325528 Method of operating a single cylinder two-stroke engine  
The invention is directed to a method for operating a two-stroke engine having a cylinder in which a combustion chamber is formed and which includes devices for metering fuel and supplying...
7318411 Adaptive ignition dwell based on ionization feedback  
A system for determining a minimum ignition coil charge duration of an internal combustion engine to meet a desired level of combustion stability includes a sensor in communication with a...
7302932 Pre-ignition detection and mitigation  
A system and method for detecting and mitigating preignition for a multi-cylinder engine is provided. According to one aspect of the disclosure, a method is provided including identifying a...
7246597 Method and apparatus to operate a homogeneous charge compression-ignition engine  
A method and apparatus for controlling engine operation to compensate for effects of combustion chamber deposits (CCDs) on combustion in a controlled auto-ignition engine is presented. Control...
7121260 Ignition timing control apparatus for engine  
An ignition timing control apparatus for an engine includes a controller that sets an ignition timing considering a change of a temperature or a pressure in a combustion chamber at a time when an...
7021285 Control device for internal combustion engine  
A combustion variation value is detected, and a function that uses the detected combustion variation value is added to CVAR(i−1) to obtain CVAR(i); and using the resulting value, an exhaust gas...
6994073 Method and apparatus for detecting ionization signal in diesel and dual mode engines with plasma discharge system  
An apparatus and method to detect combustion conditions using ion signals for use in a feedback control of a diesel engine is presented. The apparatus is a spark plug type of sensor or a sensor...
6968825 Control device for spark-ignition engine  
A control device for a spark-ignition engine, in which a mixture in a combustion chamber is fired by compression ignition in a part-load range under warm-running conditions, includes an EGR...
6955157 System for engine retard limit control  
The present invention provides a system and method for controlling the retard limit of an engine having one or more cylinders in which combustion occurs. A sensor is employed to detect the...
6931836 Method for NOx reduction of externally-ignited, explosion, internal combustion engines  
In a method for reducing NOx in the exhaust gas of an externally ignited, explosion-type internal combustion engine that is operated at a lean fuel/air ratio of λ>1 and has a motor control device...
6883497 Method of preventing preignition for an internal combustion engine  
Preignition in an engine is prevented by identifying engine conditions that relate to autoignition. If one or more of the engine conditions exceed a threshold, a controller retards the spark in...
6845753 System and method for controlling ignition timing in an engine  
A system and method for controlling ignition timing of an engine is provided. The method includes determining a change in a combustion temperature rise within an engine based on a change in at...
6832472 Method and apparatus for controlling exhausted gas emissions during cold-start of an internal combustion engine  
An in-cylinder ion sensor provides a signal representative of the air/fuel ratio of the charge mixture as an engine starts. The signal representative of the air/fuel ratio is used as a feedback...
6763297 Displacement on demand spark knock detection  
False spark knock detection is minimized for a displacement on demand engine having activated and deactivated modes. The engine is operated in the activated mode. Knock detection is performed on...
6687591 Method of and apparatus for controlling torque-down upon gear changing  
Torque-down controlling conducted on an engine torque upon gear changing of an automatic transmission is implemented by converting a demand for a rate of torque-down against the engine torque into...
6684851 Method for determining a functioning parameter of an engine  
A process for determining an operating parameter of an internal combustion engine as a function of three control parameters (N, P, λ) of this motor, comprises: a) establishing a first map of the...
6670722 Boat ignition safety apparatus and method  
A boat ignition safety apparatus and method that prevents a gasoline engine of a boat from being started until the enclosed engine compartment has received proper ventilation for a predetermined...
6644274 Apparatus for detecting a condition of burning in an internal combustion engine  
An apparatus for detecting a condition of the burning in an internal combustion engine includes a burning-parameter controlling device for controlling a burning parameter operating on the burning...
6611145 Motorcycle having a system for combustion diagnostics  
A motorcycle including a two-cylinder engine. The engine includes a housing, first and second cylinders having first and second combustion chambers, respectively, and first and second pistons...

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