Patent ID: 8997464
Filing Date: 2015-04-07
Classification: F01N,F02B,Y02A,Y02T

Abstract:
1. A waste heat recovery system with an integrated hydrocarbon adsorber for a vehicle having an internal combustion engine that generates exhaust gas containing hydrocarbons, and a catalytic converter, the waste heat recovery system comprising: an exhaust gas conduit in fluid communication with the internal combustion engine and the catalytic converter, the exhaust gas being flowable from the internal combustion engine to the catalytic converter through the exhaust gas conduit; an exhaust gas heat exchanger configured to receive at least a portion of the exhaust gas from the exhaust gas conduit to enable heat transfer between the exhaust gas and a coolant, the exhaust gas heat exchanger having at least one channel through which the exhaust gas is flowable, the at least one channel having an interior surface with a coating made of a hydrocarbon adsorbing material; a heat exchanger bypass valve configured to selectively direct at least a portion of the exhaust gas from the exhaust gas conduit to the exhaust gas heat exchanger or to bypass the exhaust gas heat exchanger; a coolant circuit in fluid communication with the exhaust gas heat exchanger, the coolant circuit being configured to circulate the coolant through the exhaust gas heat exchanger such that heat is transferable between the exhaust gas and the coolant, the coolant circuit having a coolant bypass and a coolant bypass valve configured to selectively direct at least a portion of the coolant to the exhaust gas heat exchanger or through the coolant bypass such that the coolant bypasses the exhaust gas heat exchanger; and a controller configured to control the heat exchanger bypass valve and the coolant bypass valve based on at least one parameter such that the hydrocarbons in the exhaust gas are selectively adsorbable by and desorbable from the coating.