Apparatus and method for controlling internal combustion engine
AssigneeUnisia Jecs Corporation
InventorKenichi Machida
Life of this patent
Estimating the term…
Abstract
In an electronically controlled fuel injection apparatus of a speed density type, a new air intake efficiency correction value for correcting an intake pressure is calculated based on the intake pressure, an engine rotation speed, and an advance angle amount of valve timing.
Claims20
An apparatus for controlling an internal combustion engine comprising:
- a variable valve operating apparatus for changing opening and closing characteristics of intake valve and exhaust valves;
- a pressure sensor for detecting an intake pressure in said engine;
- a rotation sensor for detecting a rotation speed of said engine;
- an opening and closing characteristic detection unit for detecting said opening and closing characteristics to be adjusted by said variable valve operating apparatus;
- a new air intake ratio calculation unit for calculating a new air intake ratio of said engine based on said opening and closing characteristics of said intake and exhaust valves, said intake pressure and said rotation speed;
- and
- an operation factor calculation unit for calculating and outputting an operation factor of said engine based on said new air intake ratio calculated at said new air intake ratio calculation unit.
An apparatus for controlling an internal combustion engine comprising:
- variable valve operating means for changing opening and closing characteristics of intake valve and exhaust valves;
- pressure detecting means for detecting an intake pressure in said engine;
- rotation speed detecting means for detecting a rotation speed of said engine;
- opening and closing characteristic detecting means for detecting said opening and closing characteristics to be adjusted by said variable valve operating means;
- new air intake ratio calculating means for calculating a new air intake ratio of said engine based on said opening and closing characteristics of said intake and exhaust valves, said intake pressure and said rotation speed;
- and
- operation factor calculating means for calculating and outputting an operation factor of said engine based on said new air intake ratio calculated at said new air intake ratio calculating means.
A method for controlling an internal combustion engine provided with a variable valve operating apparatus for changing opening and closing characteristics of intake valve and exhaust valves, comprising the steps of:
- detecting an intake pressure in said engine;
- detecting a rotation speed of said engine;
- detecting said opening and closing characteristics to be adjusted by said variable valve operating apparatus;
- calculating a new air intake ratio of said engine based on said opening and closing characteristics of said intake and exhaust valves, said intake pressure and said rotation speed;
- and
- calculating and outputting an operation factor of said engine based on said new air intake ratio calculated at said new air intake ratio calculation unit.
Dependencies are inferred from the claim text.