Study on reduction of accessory-horsepower requirements. Third quarterly progress report

Technical Report · Wed Apr 23 00:00:00 EDT 1975

DOI:https://doi.org/10.2172/5202710· OSTI ID:5202710

The objective of this study program is to minimize automotive accessory horsepower consumption, and thereby maximize overall vehicle fuel economy, by utilizing continuously variable speed drives or auxiliary power units (APUs) in a standard passenger automobile. As an aid to definitizing accessory performance, load requirements and fuel economy, a baseline vehicle has beeen established. This vehicle is a conventional intermediate size 5- or 6-passenger automobile with a 4.1 to 5.7 liter (250 to 350 cubic inch) displacement, spark ignition engine. Accessories to be considered are the alternator, power steering system, power brakes, air conditioner, cooling fan, water pump and emission control air pump. A program summary of major accomplishments is presented including: accessory drive devices analyses; vehicle computer model fuel economy analyses; improved accessory efficiency analysis; resized engine fuel economy analysis; accessory evaluation matrix completed; drive-systems trade-study completed and the prime concept presented; and variable-speed belt-drive concepts reviewed.

• Research Organization: AiResearch Mfg. Co., Phoenix, AZ (USA)
• DOE Contract Number: AC03-76CS51095
• OSTI ID: 5202710
• Report Number(s): DOE/CS/51095-T7; ON: DE82011804
• Resource Relation: Other Information: Portions of document are illegible
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
33 ADVANCED PROPULSION SYSTEMS
AUTOMOTIVE ACCESSORIES
DESIGN
ENERGY CONSUMPTION
FUEL ECONOMY
AIR CONDITIONERS
ALTERNATORS
BLOWERS
BRAKES
EFFICIENCY
FABRICATION
MACHINE PARTS
MODIFICATIONS
WATER PUMPS
ELECTRIC GENERATORS
PUMPS
320303* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes
330101 - Internal Combustion Engines- Spark-Ignition