Investigation of the fuel economy potential of three late-model automobiles
Technical Report
·
OSTI ID:7199834
Modern automobile engines and associated emission controls are undergoing many design changes to improve fuel economy while meeting the required emission standards. For improved assessment of tradeoff options involving fuel economy, emissions, and performance, it is important to establish as a baseline the fuel-economy potential of modern engines when the constraint of emission controls is removed. This report describes the results of experimental work to determine the fuel-economy potential of three late-model automobiles and then to quantify the fuel-economy differential brought about by imposing emission controls to meet the current emission standards. The emission-control systems that were used included both oxidation catalysts with exhaust-gas-recirculation (EGR) and manifold air-injection systems with EGR. Results of tests with a 350 cubic-inch-displacement (CID) Chevrolet, a 318-CID Plymouth, and a 351-CID Ford indicate that an 11- to 40-pct improvement in fuel economy can be achieved if constraints upon engine parametric adjustment are removed. The precise value depends upon the type of emission-control system and/or driving cycle. The values suggest the lower boundary of potential improvement for these engines given an emission requirement and control system fully compatible with best fuel economy. Results on fuel economy, vehicle performance, and emissions from chassis dynamometer and road tests are discussed in the report.
- Research Organization:
- Energy Research and Development Administration, Bartlesville, Okla. (USA). Bartlesville Energy Research Center
- OSTI ID:
- 7199834
- Report Number(s):
- BERC/RI-76/1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320203 -- Energy Conservation
Consumption
& Utilization-- Transportation-- Land & Roadway
33 ADVANCED PROPULSION SYSTEMS
330603* -- Vehicle Design Factors-- Engine System
330700 -- Advanced Propulsion Systems-- Emission Control
AUTOMOBILES
CATALYTIC CONVERTERS
DYNAMOMETERS
ENERGY CONSUMPTION
EQUIPMENT
EXHAUST GASES
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FEDERAL TEST PROCEDURE
FUEL CONSUMPTION
FUEL ECONOMY
GASEOUS WASTES
MEASURING INSTRUMENTS
PERFORMANCE TESTING
POLLUTION CONTROL EQUIPMENT
TESTING
VEHICLES
WASTES
320203 -- Energy Conservation
Consumption
& Utilization-- Transportation-- Land & Roadway
33 ADVANCED PROPULSION SYSTEMS
330603* -- Vehicle Design Factors-- Engine System
330700 -- Advanced Propulsion Systems-- Emission Control
AUTOMOBILES
CATALYTIC CONVERTERS
DYNAMOMETERS
ENERGY CONSUMPTION
EQUIPMENT
EXHAUST GASES
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FEDERAL TEST PROCEDURE
FUEL CONSUMPTION
FUEL ECONOMY
GASEOUS WASTES
MEASURING INSTRUMENTS
PERFORMANCE TESTING
POLLUTION CONTROL EQUIPMENT
TESTING
VEHICLES
WASTES