Steuerungssystem zum Maximieren des Brennkraftmaschinen-Wirkungsgrads eines hybrid-elektrischen Fahrzeugs

摘要

A control apparatus for a hybrid electric vehicle that minimizes vehicle fuel-consumption. A fuel consumption coefficient (me) relating to overall efficiency of a hybrid engine (1) is calculated. An engine operating point whereat this fuel-consumption coefficient is optimized is then determined (S206), and the engine is controlled to operate at the determined engine operating point (S208-S214). When such control is performed, overall engine efficiency in all operating regions can be optimized, and further improvements in fuel consumption can be realized.