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7574993 Apparatus, system and method for operating a dual fueled spark ignition engine  
Described herein are various embodiments of an apparatus, system and method for operating a dual fueled spark ignition engine. For example, according to one illustrative embodiment, a method for...
7503320 Method of operating an engine at idle speed for operational diagnosis of a purge valve  
This in particular involves testing the operation of a fuel vapor purge valve ( 31 ). The engine ( 1 ) is running at idle. An idle speed controller (ISC, 47 ) acts on the engine idle speed. At a...
7392800 Fuel vapor treatment  
A fuel vapor treatment system includes a canister containing an adsorbent, a detector detecting a concentration of a fuel vapor, a purge passage for introducing the mixture gas into an engine, and...
7363906 Control system for internal combustion engine  
A control system for an internal combustion engine, which can determine just enough amounts of demanded combustion fuel and auxiliary fuel during execution of auxiliary fuel supply, for improvement...
7316228 Evaporated fuel treatment system for internal combustion engine  
In an evaporated fuel treatment system, a pump is operated to flow air through a specified restriction and a sensor detects a first differential pressure across the restriction. A fuel tank, a...
7311094 Method for operating an internal combustion engine  
Operation of an internal combustion engine with oil lubrication and electronic fuel injection, includes the steps of determining a flow of fuel mass (mkp_ausg) evaporating out of oil, and...
7305978 Vaporized fuel purge system  
A feedback correction coeficient used to perform feedback-control of the fuel injection amount based on the air-fuel ratio of exhaust gas is calculated. A concentration updating based value is set...
7299794 Control system for supplying fuel vapour at start-up and method for using the system  
A method and a system for improved control of fuel supply to an internal combustion engine are presented. The system, in addition to a liquid fuel injector, includes a fuel vapor injector disposed...
7216640 Engine control to compensate for fueling dynamics  
A method for calculating transient fuel wall wetting characteristics of an operating engine is described. The method accounts for cylinder valve deactivation of cylinders in the engine in...
7182050 Control device for spark-ignition engine  
The invention is intended to provide improved emission-cleaning performance by use of a three-way catalyst alone, without the need for a lean NOx catalyst, while ensuring a fuel economy improvement...
7143756 Control device and control method for internal combustion engine  
If the amount of fuel added to exhaust gas becomes excessive as a result of an abnormality of an addition agent supply unit ( 60 ), the air-fuel ratio of exhaust as decreases. If an exhaust gas...
7140360 System for controlling exhaust emissions produced by an internal combustion engine  
A system for controlling the air-to-fuel ratio in an internal combustion engine includes an air intake conduit coupled to an intake manifold, an EGR valve disposed in-line with an EGR conduit...
7128065 Method and device for controlling an internal combustion engine  
A method and a device are described for controlling an internal combustion engine. On the basis of the comparison of a setpoint value with an actual value for a variable that characterizes the...
7111593 Engine control to compensate for fueling dynamics  
A method for calculating transient fuel wall wetting characteristics of an operating engine is described. The method accounts for cylinder valve deactivation of cylinders in the engine in...
7086392 Control apparatus for sealed fuel tank system  
A control apparatus is provided for a sealed fuel tank system which is applied to an engine including a throttle valve provided in an intake pipe, and which includes a vaporized fuel supply pipe...
7073494 System 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...
7059313 Software fuel volatility measurement  
A system is described using a fuel quality sensor or an estimate of fuel volatility for controlling various aspects of engine operation. For example, improved fuel tank leak detection may be...
7059298 Evaporative fuel processing device for an internal combustion engine  
The present invention judges whether an internal combustion engine is operated by a special operation method in which a fuel cut is performed more frequently than predefined depending on the...
7055514 Engine controller and associated operating method  
Operating method and apparatus for operating an engine controller for an internal combustion engine, including operating in a first operating mode, acquiring at least one state variable (CL,...
7044118 Method and device for controlling injection in an internal combustion engine, in particular a diesel engine with a common rail injection system  
There is described a method of controlling injection in a vehicle internal combustion engine, wherein the intake air flow and exhaust lambda are measured to estimate the fuel quantity actually...
7032580 Internal combustion engine system and method for controlling the same  
When fuel vapor flows to an intake passage from a canister, the amount of fuel injected to an internal combustion engine is corrected to suppress fluctuation of the air-fuel ratio in the engine due...
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...
7007684 Controller for internal combustion engine  
A controller for an engine including a fuel vapor processing mechanism. The controller determines the amount of fuel vapor drawn into an intake passage based on the concentration of fuel vapor...
7004156 Method for determining intake port flow in an internal combustion engine  
An internal combustion engine adapted for combustion of stoichiometric and non-stoichiometric air/fuel mixtures includes an intake system, a combustion chamber which is adapted for direct injection...
7000602 Engine 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...
6988490 Engine fuel injection control system  
A system for controlling fuel injection in an engine. The engine includes an intake passage, an intake passage injector, a cylinder having a combustion chamber, and a cylinder injector for...
6932068 Evaporative emission control system and method  
An evaporative emission control system includes a canister for collecting fuel vapor from a fuel tank, and a purge control valve disposed between the canister and the intake passage of the engine....
6899093 Control system for NOx control for cam phaser and/or EGR systems  
A vehicle control system regulates oxides of nitrogen levels in vehicle emissions. Recirculation of exhaust gas in an engine is controlled with an exhaust gas regulator valve and/or a cam phaser....
6880541 Air-fuel ratio control apparatus for internal combustion engine  
Air-fuel ratio control apparatus for an engine of automobile for controlling an air-fuel ratio to a desired value includes module ( 33 ) for computing a purge ratio (Pr) from a purge quantity...
6868837 Cold start fuel vapor enrichment  
An engine system includes an engine, a fuel system that communicates with the engine, and a controller that communicates with the fuel system. The controller controls a first quantity of liquid...
6860257 Processing apparatus and method  
A processing apparatus is powered by an internal combustion engine. Airborne emissions that are separate from the exhaust of the internal combustion engine are produced during processing. An air...
6857263 Low emission diesel combustion system with low charge-air oxygen concentration levels and high fuel injection pressures  
This invention sets forth a commercially viable diesel combustion system that meets environmentally acceptable levels of NOx emissions (i.e. 0.2 g/bhp-hr or lower across a full map of engine speeds...
6830043 Secondary air supply abnormality detection system  
A secondary air supply abnormality detection system determines that an abnormality is generated in a system including a secondary air supply system if a true secondary air flow rate is out of a...
6805091 Method for determining the fuel content of the regeneration gas in an internal combustion engine comprising direct fuel-injection with shift operation  
A method for determining the fuel content of a regeneration gas during regeneration of an intermediate fuel vapor storage unit in internal combustion engines with gasoline direct injection in lean...
6739310 Method and electronic control device for diagnosing the mixture production in an internal combustion engine  
A method and an electronic control device for diagnosing the mixture formation in internal combustion engines including tank ventilation. The diagnosis is linked to the mixture adaptation and is...
6725836 Method of operating an internal combustion engine  
An internal combustion engine for a motor vehicle in particular is described; it is equipped with a combustion chamber into which air is drawable through a throttle valve, into which fuel is...
6718942 Method for estimation of the quantity of fresh air present in the intake and exhaust manifolds of an internal combustion engine with a recirculation circuit  
Method for estimation of the quantity of fresh air present in the intake and exhaust manifolds of an internal combustion engine with a recirculation circuit, by an observer, applied to a system of...
6708682 Evaporated fuel processing apparatus for internal combustion engine  
An evaporated fuel processing apparatus for an internal combustion engine is provided which includes a canister that traps fuel vapors generated in a fuel tank, and a purge control valve disposed...
6708678 Electronic control device for internal combustion engine and method of controlling the internal combustion engine  
The invention provides an electronic control device for an internal combustion engine and a control method thereof in which more stable control is attained on the internal combustion engine in...
6705303 Air-fuel ratio control apparatus and method for internal combustion engine  
In air-fuel ratio control apparatus and method for an internal combustion engine having an EGR valve interposed in an EGR passage between an intake manifold and an exhaust manifold, a target EGR...
6701906 System and method for controlling fuel injection  
A system and method for controlling fuel injection of a vehicle, in which a MAP (manifold absolute pressure) sensor is used to calculate variations in intake pressure in a purge interval to perform...
6675788 Air-Fuel ratio control apparatus for an internal combustion engine and controlling method  
An air-fuel ratio control apparatus for an internal combustion engine in which an air-fuel ratio is always controlled to be a target value with accuracy when purge air is introduced is obtained. ...
6668808 Controller for controlling an evaporated fuel amount to be purged  
An evaporated fuel controller for an internal-combustion engine comprises a purge system for purging evaporated fuel generated inside a fuel tank to an intake system of the engine. The controller...
6666200 Method for canister purge compensation using internal model control  
A method for air/fuel operation of an engine. The method includes providing a model of the engine. The model represents a relationship between: (1) a signal model LAMBSE, representative of...
6666198 Apparatus and method for controlling air-fuel ratio of engine  
A canister includes an adsorbent, an air layer and an air hole. An ECU obtains a physical status quantity Mgair representing the vapor stored state of the air layer, a physical status quantity...
6666201 System and method for diagnosing EGR performance using NOx sensor  
A method and system for diagnosing a condition of an EGR valve used in an engine system. The EGR valve controls the portion exhaust gases produced by such engine system and fed back to an intake of...
6651640 Vapor recovery purge system and method  
A system and method for adjusting fuel vapor delivery from a fuel vapor recovery system in an internal combustion engine. An engine controller calculates a purge fuel fraction that is indicative of...
6644291 Control method and apparatus for adaptively determining a fuel pulse width  
A control system for controlling an engine ( 10 ) of an automotive vehicle has an air charge sensor ( 47 ) generating a first signal indicative of an air charge, a purge flow valve ( 74 )...
6631704 Control system and method and engine control unit for internal combustion engine  
There are provided a control system and method and an engine control unit for an internal combustion engine, which are capable of determining an amount of fuel to be injected during a two-stage...
6622691 Control method for a direct injection gas engine with fuel vapor purging  
A control method for a direct injection gasoline engine operable in stratified or homogenous combustion modes and having a fuel vapor purge system estimates the hydrocarbon concentration of purge...
Matches 1 - 50 out of 207 1 2 3 4 5 >