Patent ID: 7016773
Filing Date: 2006-03-21
Classification: B60K,B60L,B60W,F01L,F02D,Y02T

Abstract:
1. A control system for a hybrid vehicle that is operated while switching a driven mode between an engine-driven mode in which the hybrid vehicle is driven by an internal combustion engine and a motor-driven mode in which the hybrid vehicle is driven by an electric motor, and is capable of recovering electric energy for driving the electric motor, using the output from the engine, during the engine-driven mode, the control system comprising: operating condition-detecting means for detecting operating conditions of the hybrid vehicle; driving fuel consumption amount-calculating means for calculating a driving fuel consumption amount of the engine required for driving the hybrid vehicle in the engine-driven mode, based on the detected operating conditions of the hybrid vehicle; recovering fuel consumption amount-calculating means for calculating a recovering fuel consumption amount of the engine required for recovering electric energy to be consumed when the hybrid vehicle is driven in the motor-driven mode, based on the detected operating conditions of the hybrid vehicle; and driven mode-setting means responsive to a result of comparison between the recovering fuel consumption amount calculated by said recovering fuel consumption amount-calculating means and the driving fuel consumption amount calculated by said driving fuel amount-calculating means, for setting the driven mode to the motor-driven mode when the recovering fuel consumption amount is smaller than the driving fuel consumption amount, and to the engine-driven mode when the recovering fuel consumption amount is larger than the driving fuel consumption amount.