| 摘要 |
PURPOSE: A control method for enhancing fuel efficiency and a system thereof are provided to open a throttle valve completely and to minimize a flow path of an intake manifold. CONSTITUTION: When the deceleration direct-coupled is decided, fuel cut generation conditions are decided(S12). When the fuel cut is decided, the engine brake feeling is improved(S14,S16). A step of practicing the improvement of the engine brake feeling comprises a step of reducing the pumping loss of an engine. When the pumping loss of the engine is reduced, a throttle valve is opened. When the pumping loss of the engine is reduced, an overlap section of the exhaust valve is expanded. |
