METHODS AND SYSTEMS FOR HYBRID VEHICLE WASTE HEAT RECOVERY

摘要

Systems and methods for operating an engine that includes an exhaust gas heat recovery system are described. The system may selectively or contemporaneously supply energy from engine exhaust gas to generate electricity or warm the engine. In one example, exhaust gas energy raises a temperature of a heat transfer medium and the heat transfer medium is routed to an engine coolant heat exchanger or an expander via a bypass valve.

主权项

1. An engine system, comprising:
an engine including an evaporator position along an exhaust system; an expander in fluidic communication with the evaporator; a condenser in fluidic communication with the evaporator; an engine coolant heat exchanger in thermal communication with the condenser, the engine coolant heat exchanger including an output that is in fluidic communication with an input of the evaporator.