Patent ID: 6796287
Filing Date: 2004-09-28
Classification: B60K,B60L,B60W,F02D,Y02T

Abstract:
An internal combustion engine that is driven to output a required torque to an output shaft, said internal combustion engine comprising:a compression mechanism that compresses an air-fuel mixture containing a fuel and the air taken into said internal combustion engine; a compression ratio changeover mechanism that changes over a compression ratio of the air-fuel mixture compressed by said compression mechanism; a motor transmits torque to and from said output shaft of said internal combustion engine; a torque demand detection module that detects a torque demand, which is required to said output shaft of said internal combustion engine; a specification module that compares the detected torque demand with a threshold torque, which is set in advance for changeover of setting of the compression ratio in said internal combustion engine, and distributes the torque demand into a first torque value to be transmitted between said motor and said output shaft and a second torque value to be output from said internal combustion engine based on a result of the comparison, said specification module specifying a desired setting of the compression ratio based on the result of the comparison; a motor control module that controls said motor to regulate torque transmission between said motor and said output shaft according to the first torque value; and a driving module that controls said compression ratio changeover mechanism to change over setting of the compression ratio in said internal combustion engine according to the specification of the desired setting of the compression ratio.