Fuel economy performance of Variable Valve Train device. Summary report

Technical Report · Tue Nov 13 04:00:00 EST 1984

OSTI ID:5627402

Hausknecht, L A

Results of this chassis dynamometer test program have shown that installation of the Variable Valve Train system on the Ford 300 CID 6-cylinder engine can effect an improvement in fuel economy. Based on a composite summation of the results of a total of 15 different driving modes, the fuel economy improvement was between 4 and 5 percent. The improvement was slightly greater when the driving modes above 40 mph were eliminated from the composite analysis. Installation of the VVT appeared to result in an increase in the concentration of CO in about half of the ''driving'' modes, and an increase in the concentrations of NO/sub x/ and HC in about three-fourths of the ''driving'' modes. However, the potential effect of the VVT on emission control requirements and on emissions certification compliance cannot be determined from these tests, because cyclic operation was not included and mass emissions rates were not determined.

• Research Organization: Battelle Columbus Labs., OH (USA)
• DOE Contract Number: FG01-82CE15137
• OSTI ID: 5627402
• Report Number(s): DOE/CE/15137-T1; ON: DE85004839
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330101* -- Internal Combustion Engines-- Spark-Ignition
330700 -- Advanced Propulsion Systems-- Emission Control
AIR POLLUTION
AUTOMOBILES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
DYNAMOMETERS
EXHAUST GASES
FLUIDS
FUEL ECONOMY
GASEOUS WASTES
GASES
HYDROCARBONS
MEASURING INSTRUMENTS
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
POLLUTION
TESTING
VEHICLES
WASTES