Invention Grant
US08341951B2 Vehicle exhaust heat recovery with multiple coolant heating modes and method of managing exhaust heat recovery 有权
多种冷却液加热方式的车辆废热回收及废热回收管理方法

Vehicle exhaust heat recovery with multiple coolant heating modes and method of managing exhaust heat recovery
Abstract:
An apparatus is provided for a vehicle with an engine that includes an exhaust system through which exhaust gas is discharged from the engine. A heat exchanger is positioned at least partially within the exhaust system. Coolant flow passages are provided in thermal communication with the engine and with the heat exchanger. A bypass valve is operable in a first mode to direct the exhaust gas across the heat exchanger along a first flow path to transfer exhaust heat to the coolant flow passages, and is further operable in a second mode to direct at least a portion of the exhaust gas across the heat exchanger along a second flow path to transfer exhaust heat to the coolant flow passages in a second coolant heating mode. The second flow path is restricted relative to the first flow path. A method of managing exhaust heat recovery is also provided.
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