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Apparatus and method for controlling internal combustion engine

A technology of a control device and a control method, which is applied to engine control, fuel injection control, internal combustion piston engines, etc., and can solve problems such as reduced engine handling performance and emission performance

Inactive Publication Date: 2005-12-07
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In particular, in the case of a change in the intake air amount, due to the delay in detection, it is impossible to calculate the engine control variables corresponding to the change, such as the fuel injection amount, which is set according to the intake air amount, which may cause the engine's drivability and reduced emission performance

Method used

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  • Apparatus and method for controlling internal combustion engine
  • Apparatus and method for controlling internal combustion engine
  • Apparatus and method for controlling internal combustion engine

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Embodiment Construction

[0031] Embodiments of the present invention will be described below with reference to the accompanying drawings.

[0032] figure 1 is a block diagram of an internal combustion engine for a vehicle. exist figure 1 Among them, an electronically controlled throttle valve 104 is provided in the intake passage 102 of the internal combustion engine 101, and is used to drive the opening and closing of the throttle valve 103b through a throttle motor 103a. Air is drawn into combustion chamber 106 through electronically controlled throttle valve 104 and intake valve 105 .

[0033] The combusted exhaust gas exits the combustion chamber 106 through the exhaust valve 107, is purified by the front catalytic converter 108 and the rear catalytic converter 109, and then is discharged into the atmosphere.

[0034] The valve lift and valve working angle of the intake valve 105 are continuously changed by a variable valve event and lift mechanism (VEL=variable valve event and lift mechanism) ...

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Abstract

This invention relates to a method for controlling the motor by controlling the air input, characterized in that: in the combustion engine with changeable air gate mechanism, checking the operation characteristics of air input gate, and basing on the above step calculating the air input controlled by air gate, then calculating the variation( change rate, change amount) between the later computational value of air input and former one, and calculating the latest engine controlling variable based on the said change and engine controlling variable set in advance, then outputting the latest engine controlling variable to execute the control of engine.

Description

technical field [0001] The present invention relates to a control device and a control method for an internal combustion engine, wherein the internal combustion engine is provided with a variable valve mechanism for changing the valve operating characteristics of an intake valve, and in particular, the present invention relates to a method for accurately calculating engine control according to the intake air quantity of a cylinder. variable technology. Background technique [0002] Heretofore, there has been disclosed an engine control device in which fuel injection is calculated based on an intake air amount calculated based on an air amount detected by an air amount detection means such as an air flow meter and a detected intake air pressure amount (refer to Japanese Unexamined Patent Publication No. 11-62639). [0003] However, an engine has been developed in which the intake air amount control is performed by changing the valve operation characteristic of the intake val...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D13/02
CPCY02T10/18Y02T10/12
Inventor 饭塚勇町田宪一
Owner HITACHI LTD
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