Patent ID: 8794194
Filing Date: 2014-08-05
Classification: F01P,F02D,Y10T

Abstract:
1. A combustion state control apparatus for controlling a combustion state of an internal combustion engine of a vehicle having the internal combustion engine, an automatic transmission capable of automatically changing a gear ratio, a radiator in which a coolant flowing through the internal combustion engine is to circulate to lower a temperature of the coolant, a flow rate adjusting unit for adjusting a flow rate of the coolant to the radiator, a coolant temperature detecting unit for detecting the temperature of the coolant, an engine speed detecting unit for detecting an engine speed of the internal combustion engine, and a load detecting unit for detecting a load of the internal combustion engine, the combustion state control apparatus comprising: an opening degree adjusting unit configured to increase an opening degree of the flow rate adjusting unit, as the temperature of the coolant detected by the coolant temperature detecting unit rises; and a gear ratio changing unit configured to change the gear ratio of the automatic transmission to a gear ratio to be used when the vehicle runs at a slow speed, and to change to said gear ratio when all of the following conditions are present: