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7614391 |
Oxygen sensor output correction apparatus for internal combustion engine
A correction apparatus for correcting an output of an oxygen sensor installed in an exhaust pipe of an internal combustion engine to measure the concentration of oxygen contained in exhaust gas....
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7606654 |
Oxygen sensor output correction apparatus for internal combustion engine
A correction apparatus for correcting an error in an output of an oxygen sensor such as an A/F sensor installed in an exhaust pipe of an internal combustion engine to measure the concentration of...
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7599784 |
Fuel injection system learning average of injection quantities for correcting injection characteristic of fuel injector
A fuel injection system designed to execute a learning operation to spray fuel through a fuel injector in a cycle to calculate an average of actual injection quantities for correcting an injection...
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7596992 |
Fuel injection control apparatus designed to compensate for deviation of quantity of fuel sprayed from fuel injector
A fuel injection control apparatus for an internal combustion engine is provided. A controller directs a fuel injector to spray a learning injection quantity of fuel and determines a resulting...
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7596446 |
Control device
A change in a torque request for an internal combustion engine during a prediction period is predicted as a change in a target torque. Further, a change in an outputtable upper-limit torque during...
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7571046 |
Engine optimisation method and apparatus
An engine management apparatus for an internal combustion engine of a vehicle includes a microprocessor that is operable on adjustment mechanisms of the vehicle. The vehicle has a torque sensor for...
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7568476 |
Air-fuel ratio control system for internal combustion engine
When detecting the data showing an output characteristics of an air-fuel ratio sensor, the air-fuel ratio (feed air-fuel ratio) supplied to each cylinder is alternately changed to rich or lean by a...
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7558663 |
Fuel injection control system with exempt area of fuel map
A fuel management system for fuel injected vehicles permits a user to modify vehicle performance without exceeding acceptable standards for vehicle emissions. A portion of the fuel management...
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7546169 |
Control apparatus for engine having time delay estimating unit increasing or decreasing number of samplings which is quotient obtained by dividing time delay by sampling period of discretization
A plant model expressing an object to be controlled by a discrete mathematical model is used. Parameters of the plant model are identified in such a way as to bring an identification error, which...
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7520265 |
Fuel injection controller
A fuel injection device calculates a variation correction value by incorporating in-cylinder pressure into injector individual data based on an injection rate of an injector measured outside a...
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7489999 |
Control apparatus and control method for variable valve apparatus
In an engine provided with a valve lift amount variable mechanism and a center phase variable mechanism for an intake valve, a region between a region where a flow rate of an intake air passing...
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7484504 |
Air-fuel ratio control system and method for internal combustion engine
An air-fuel ratio control system includes: a catalyst; an oxygen concentration sensor; an integral value calculation portion that calculates an integral value of a deviation updated by integrating...
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7455048 |
Method for operating an internal combustion engine, and a control device therefor
A method of monitoring proper operation of an internal combustion engine by analyzing an engine speed includes the following steps: determination of an acceleration characteristic for each...
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7451037 |
Learning method of injection characteristic and fuel injection controller
A learning time counter is started and updated if an operation state is stabilized after shifting to a certain operation range. Then, convergence of a FCCB correction value of a variation in an...
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7438066 |
Method and device for controlling an internal combustion engine
A method and device for controlling an internal combustion engine, in which the fuel quantity to be injected into the engine is limited to a limiting value. The limiting value is predefined on the...
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7426926 |
Cold idle adaptive air-fuel ratio control utilizing lost fuel approximation
A method for controlling fueling of an engine, the method comprising during an engine cold start and before the engine is warmed to a predetermined level, transitioning from open-loop fueling to...
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7404397 |
Method and apparatus for modifying fuel injection scheme
A fuel injector control modification module is configured to modify primary fuel injector control signals provided by an engine control unit of an internal combustion engine. The module is...
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7401604 |
Engine control device and control method thereof
An engine control device and method that prevents fuel injection quantity from becoming unstable due to a rapid change of a correction quantity even in a predetermined operation state such as...
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RE40431 |
Method of regulating an internal combustion engine
Method of regulating an internal combustion engine in order to reach presettable nitrogen oxide emission values of the internal combustion engine, wherein the internal combustion engine is supplied...
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7386388 |
Air-fuel ratio control system and method for internal combustion engine, and engine control unit
An air-fuel ratio control system for an internal combustion engine, which is capable of accurately estimating an exhaust gas state parameter according to the properties of fuel, thereby making it...
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7363912 |
Fuel injection controller for engine
A fuel injection controller calculates a difference between a rotation speed fluctuation amount of an engine in the case where an injection for learning is performed and the rotation speed...
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7359792 |
Method and apparatus for initializing injectors
In an apparatus for initializing injectors based on pieces of correction data each corresponding to one of the injectors, an obtaining unit obtains injection characteristics of the injectors using...
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7353814 |
Apparatus and method for controlling fuel injection of internal combustion engine, and internal combustion engine
An internal combustion engine has a fuel injection valve. To cause an actual air-fuel ratio of air-fuel mixture burned in the engine to be equal to a target value, an electronic control device...
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7324889 |
Intake-air quantity control system of engine
In an intake-air quantity control system of an engine employing a variable valve operating device capable of controlling a cylinder intake-air quantity by variable control of an operating...
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7322346 |
Method and device for engine control in a motor vehicle
A method is specified for controlling a combustion engine in a motor vehicle, namely for optimally adjusting an air/fuel ratio which is distinguished in that the air/fuel ratio is the result of a...
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7308354 |
Method of controlling elements used to execute elementary functions of an internal combustion engine
A method of controlling elements used to execute the elementary functions of internal combustion engines. The method controls the elements using measurement signals provided by sensors, determines...
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7302941 |
Air-fuel ratio control apparatus for internal combustion engine
An air-fuel ratio control apparatus for an internal combustion engine according to the invention includes a control unit that makes a correction to the fuel injection amount using the air-fuel...
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7281533 |
Air-fuel ratio feedback control apparatus and method for internal combustion engine
A feedback control of an air-fuel ratio of an internal combustion engine is performed in such a manner that when fuel injection is resumed from a condition where fuel injection is stopped due to...
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7270119 |
Air/fuel ratio control device for internal combustion engine
An air-fuel ratio control apparatus for an internal combustion engine, implementing integral correction of the air-fuel ratio by an integral term edfii obtained by multiplying an integrated...
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7269466 |
Optimal operation controller of plant
The present invention aims to control elements to improve operation efficiency of a plant based on a correlation value of the past accumulated data. According to the invention, an optimal operation...
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7258102 |
Control device for internal combustion engine
An engine ECU executes a program including the steps of: detecting an air-fuel ratio; calculating a learn value of a feedback correction amount for total fuel injection amount calculated based on...
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7246005 |
Method and apparatus for controlling a component by feed-forward closed-loop controller state modification
An apparatus comprises a feed-forward arrangement and a closed-loop controller. The feed-forward arrangement is configured to determine a change of a system, the system change being independent of...
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7234446 |
Misfire detector for multi-cylinder engine
A misfire detector prevents catalysts from being heated to damaging high temperatures. The misfire detector for a multi-cylinder engine includes a fuel cut control to stop supplying fuel to...
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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...
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7216639 |
Abnormality diagnosis device for air-fuel ratio sensor
When carrying out abnormality determination for an air-fuel ratio sensor 33 by comparison of an average value tave of all diagnostic values t(n) and an abnormality determination value C, the...
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7195008 |
Cylinder-by-cylinder air-fuel ratio controller for internal combustion engine
During a learning mode period, the fuel correction coefficient is forcibly changed three times from a situation in which no correction is necessary, whereby the fuel injection quantity of each...
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7191771 |
Method for controlling an internal combustion engine having a lambda regulation
The aim of the inventive method is to improve the emission values of an internal combustion engine during idling following a cold start. Said aim is achieved by inferring an adaptive value for the...
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7168422 |
Control apparatus for an internal combustion engine
A control apparatus for an internal combustion engine can avoid overcorrection at a lean side of air fuel ratio learning correction by unburnt fuel in a blowby gas, and prevent rotational speed...
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7150266 |
Method of controlling air fuel ratio learning for dual injection internal combustion engine in hybrid vehicle
In a hybrid vehicle driven by a dual injection internal combustion engine including an injector for in-cylinder injection and an injector for in-intake air path injection, and assistive dynamic, to...
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7143755 |
Air/fuel ratio control system for outboard motor engine
In an air/fuel ratio control system for an outboard motor engine, a learned correction coefficient KTIMn used in open-loop control for correcting a basic fuel injection amount to be supplied to the...
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7137386 |
Closed loop A/F ratio control for diesel engines using an oxygen sensor
A fuel control system for a diesel engine includes a first module that calculates a block learn multiplier (BLM) based on a feedback signal during a closed-loop fuel control period. A second module...
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7131261 |
Method and electronic control unit for diagnosing a catalytic converter
A method for diagnosing a catalytic converter ( 7 ), which is arranged in an exhaust-gas system ( 6 ) of an internal combustion engine ( 1 ) has the steps of: detecting the signal (USHK) of an...
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7117862 |
Adaptive engine control
An engine system has an engine control module for controlling a ratio of air and fuel supplied to an engine. The engine control module controls the ratio of air and fuel in relation to a fuel...
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7111594 |
Method of operating internal combustion engine including electromagnetically driven intake valves
A method of operating an internal combustion engine having an; electromagnetically driven intake valves for a vehicle. With the method, deviation of an opening operation of the electromagnetically...
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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...
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7107762 |
Secondary air supplying apparatus
A secondary air supplying apparatus of the present invention comprises a secondary air supplying device for supplying secondary air to upstream of an emission purifying device in an exhaust system...
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7082935 |
Apparatus and methods for closed loop fuel control
A method of controlling fuel input to an engine of a vehicle. A feedback signal is received from a sensor that senses engine exhaust. A dither signal having the same frequency as the feedback...
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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,...
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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...
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7032582 |
Injection control system of internal combustion engine
An electronic control unit (ECU) of an injection control system of an internal combustion engine measures an engine rotation speed in a period from a time point when an exhaust valve opens to a...
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