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Title: Method and apparatus for thermal management of vehicle exhaust systems

Abstract

A catalytic converter is surrounded by variable conductance insulation for maintaining the operating temperature of the catalytic converter at an optimum level, for inhibiting heat loss when raising catalytic converter temperature to light-off temperature, for storing excess heat to maintain or accelerate reaching light-off temperature, and for conducting excess heat away from the catalytic converter after reaching light-off temperature. The variable conductance insulation includes vacuum gas control and metal-to-metal thermal shunt mechanisms. Radial and axial shielding inhibits radiation and convection heat loss. Thermal storage media includes phase change material, and heat exchanger chambers and fluids carry heat to and from the catalytic converter. 7 figs.

Inventors:
;
Issue Date:
Research Org.:
Midwest Research Institute, Kansas City, MO (United States); National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
170448
Patent Number(s):
5,477,676
Application Number:
PAN: 8-188,394
Assignee:
Midwest Research Inst., Kansas City, MO (United States)
DOE Contract Number:  
AC02-83CH10093
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 26 Dec 1995
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; CATALYTIC CONVERTERS; TEMPERATURE CONTROL; THERMAL ENERGY STORAGE EQUIPMENT; HEAT EXCHANGERS; THERMAL INSULATION; HEAT LOSSES; MITIGATION; PHASE CHANGE MATERIALS

Citation Formats

Benson, D K, and Potter, T F. Method and apparatus for thermal management of vehicle exhaust systems. United States: N. p., 1995. Web.
Benson, D K, & Potter, T F. Method and apparatus for thermal management of vehicle exhaust systems. United States.
Benson, D K, and Potter, T F. Tue . "Method and apparatus for thermal management of vehicle exhaust systems". United States.
@article{osti_170448,
title = {Method and apparatus for thermal management of vehicle exhaust systems},
author = {Benson, D K and Potter, T F},
abstractNote = {A catalytic converter is surrounded by variable conductance insulation for maintaining the operating temperature of the catalytic converter at an optimum level, for inhibiting heat loss when raising catalytic converter temperature to light-off temperature, for storing excess heat to maintain or accelerate reaching light-off temperature, and for conducting excess heat away from the catalytic converter after reaching light-off temperature. The variable conductance insulation includes vacuum gas control and metal-to-metal thermal shunt mechanisms. Radial and axial shielding inhibits radiation and convection heat loss. Thermal storage media includes phase change material, and heat exchanger chambers and fluids carry heat to and from the catalytic converter. 7 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {12}
}