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Title: Method for controlling exhaust gas heat recovery systems in vehicles

Abstract

A method of operating a vehicle including an engine, a transmission, an exhaust gas heat recovery (EGHR) heat exchanger, and an oil-to-water heat exchanger providing selective heat-exchange communication between the engine and transmission. The method includes controlling a two-way valve, which is configured to be set to one of an engine position and a transmission position. The engine position allows heat-exchange communication between the EGHR heat exchanger and the engine, but does not allow heat-exchange communication between the EGHR heat exchanger and the oil-to-water heat exchanger. The transmission position allows heat-exchange communication between the EGHR heat exchanger, the oil-to-water heat exchanger, and the engine. The method also includes monitoring an ambient air temperature and comparing the monitored ambient air temperature to a predetermined cold ambient temperature. If the monitored ambient air temperature is greater than the predetermined cold ambient temperature, the two-way valve is set to the transmission position.

Inventors:
; ;
Publication Date:
Research Org.:
DOESC (USDOE Office of Science (SC) (United States))
Sponsoring Org.:
USDOE
OSTI Identifier:
1084201
Patent Number(s):
8,463,495
Application Number:
12/957,755
Assignee:
GM Global Technology Operations LLC (Detroit, MI)
DOE Contract Number:  
FC26-08NT04386
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS

Citation Formats

Spohn, Brian L., Claypole, George M., and Starr, Richard D. Method for controlling exhaust gas heat recovery systems in vehicles. United States: N. p., 2013. Web.
Spohn, Brian L., Claypole, George M., & Starr, Richard D. Method for controlling exhaust gas heat recovery systems in vehicles. United States.
Spohn, Brian L., Claypole, George M., and Starr, Richard D. Tue . "Method for controlling exhaust gas heat recovery systems in vehicles". United States. https://www.osti.gov/servlets/purl/1084201.
@article{osti_1084201,
title = {Method for controlling exhaust gas heat recovery systems in vehicles},
author = {Spohn, Brian L. and Claypole, George M. and Starr, Richard D},
abstractNote = {A method of operating a vehicle including an engine, a transmission, an exhaust gas heat recovery (EGHR) heat exchanger, and an oil-to-water heat exchanger providing selective heat-exchange communication between the engine and transmission. The method includes controlling a two-way valve, which is configured to be set to one of an engine position and a transmission position. The engine position allows heat-exchange communication between the EGHR heat exchanger and the engine, but does not allow heat-exchange communication between the EGHR heat exchanger and the oil-to-water heat exchanger. The transmission position allows heat-exchange communication between the EGHR heat exchanger, the oil-to-water heat exchanger, and the engine. The method also includes monitoring an ambient air temperature and comparing the monitored ambient air temperature to a predetermined cold ambient temperature. If the monitored ambient air temperature is greater than the predetermined cold ambient temperature, the two-way valve is set to the transmission position.},
doi = {},
url = {https://www.osti.gov/biblio/1084201}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {6}
}

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