CONTROL SYSTEM AND METHOD OF VEHICLE WITH INTERNAL COMBUSTION ENGINE AND CONTINUOUSLY VARIABLE TRANSMISSION AND CONTROL SYSTEM AND METHOD OF INTERNAL COMBUSTION ENGINE

摘要

PURPOSE: A control system of a vehicle with an internal combustion engine and continuously variable transmission and a control system and method of the internal combustion engine are provided to reduce the quantity of pollutants during exhaust and to improve fuel consumption ratio. CONSTITUTION: A control system of a vehicle where an output side of an internal combustion engine(1) with a controllable engine load is connected with a continuously variable transmission(17) capable of controlling output speed of the internal combustion engine comprises an exhaust purifying unit disposed in an exhaust system for the internal combustion engine to purify exhaust and consume fuel for the exhaust purification, an optimal operating point computing unit for computing as an optimal operating point an operating point with a minimal total fuel consumption where a fuel quantity consumed by the exhaust purifying catalyst is added to a fuel quantity consumed by the internal combustion engine for requested output, and an operation controlling unit for controlling the engine load of the internal combustion engine and controlling the transmission ratio of the continuously variable transmission so that the operating state of the internal combustion engine becomes an operating state at the optimal operating point.