Patent ID: 8567182
Filing Date: 2013-10-29
Classification: B60H,F01N,Y02T

Abstract:
1. An exhaust heat recovery system (EHRS) for a vehicle with an engine, a transmission, and an exhaust system through which exhaust gas is discharged from the engine, comprising: an exhaust heat recovery device positioned in the exhaust system and that has an exhaust heat recovery device heat exchanger and is operable to direct exhaust gas through the exhaust heat recovery device heat exchanger; a transmission heat exchanger positioned in thermal communication with the transmission; conduits containing fluid and arranged to operatively connect the exhaust heat recovery device heat exchanger with the transmission heat exchanger to thereby utilize heat from the exhaust gas to heat the transmission via the fluid; wherein the vehicle has a passenger compartment and a heater in thermal communication with the passenger compartment; wherein the conduits are further arranged to operatively connect the exhaust heat recovery device heat exchanger and the heater to thereby utilize the heat from the exhaust gas to heat the passenger compartment via the fluid; and a valve positioned in the conduits downstream of the exhaust heat recovery device and upstream of the heater; and wherein the valve is selectively openable to permit fluid flow first from the exhaust heat recovery device to the valve and then from the valve to the heater.