Invention Grant
- Patent Title: Control apparatus for multi-cylinder internal combustion engine
- Patent Title (中): 多缸内燃机控制装置
-
Application No.: US12468611Application Date: 2009-05-19
-
Publication No.: US08229647B2Publication Date: 2012-07-24
- Inventor: Takanobu Ichihara , Kazuhiko Kanetoshi , Kozo Katogi , Hiroyuki Takamura
- Applicant: Takanobu Ichihara , Kazuhiko Kanetoshi , Kozo Katogi , Hiroyuki Takamura
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Crowell & Moring LLP
- Priority: JP2008-133091 20080521
- Main IPC: F02D41/22
- IPC: F02D41/22 ; F02D43/00 ; F01L1/34

Abstract:
Provided is a control apparatus for a multi-cylinder internal combustion engine equipped with fuel injection valves provided respectively for the cylinders including: a revolution measuring means for measuring a revolution speed for a predetermined angle for each cylinder; an inter-cylinder revolution-difference calculating means for calculating, from the measured revolution speed, a difference in revolution speed between a cylinder of current explosion and a cylinder of the previous explosion; an injection amount correcting means for adjusting the average amount of injection of the fuel injection valves of all the cylinders in accordance with the inter-cylinder differences in revolution speed after the cold start of the engine calculated by the inter-cylinder revolution-difference calculating means; an inter-cylinder revolution-difference averaging means for averaging the differences in revolution speed, calculated by the inter-cylinder revolution-difference calculating means, each between the cylinder of current explosion and the cylinder of the previous explosion; and a torque adjusting means for adjusting the torque of each cylinder so that the average value of the inter-cylinder revolution differences calculated by the inter-cylinder revolution-difference averaging means can be reduced close to zero.
Public/Granted literature
- US20090292440A1 Control Apparatus for Multi-Cylinder Internal Combustion Engine Public/Granted day:2009-11-26
Information query