Accession Number : ADA112010

Title :   Impact of Gasohol on the L-141 and LDT-465-1C Engines.

Descriptive Note : Interim rept. Oct 80-Sep 81,

Corporate Author : SOUTHWEST RESEARCH INST SAN ANTONIO TX ARMY FUELS AND LUBRICANTS RESEARCH LAB

Personal Author(s) : Likos,W E ; Yost,D M

PDF Url : ADA112010

Report Date : Dec 1981

Pagination or Media Count : 110

Abstract : Gasohol was analyzed in the L-141 and LDT-465-1C engines in order to determine its impact upon engine operability. During various steady-state operating conditions, with the L-141 engine, gasohol was found to improve economy under heavily loaded conditions, while a deterioration will occur during light and intermediate loading. An evaluation of emission and nonemission-regulated carburetors shows the nonemissions carburetor better suited for gasohol use. No effects on maximum power produced were noted with gasohol. Simulated driveability tests with the L-141 engine on a dynamometer showed differences in engine response between the different fuels, but actual vehicle tests proved that driveability was not altered. A relatively short endurance test with the L-141 engine on gasohol fuel indicates, based on engine oil analysis, no significant change in engine wear rates. The endurance test did indicate, however, that more frequent oil drain intervals may be required due to TBN depletion of the engine oil. Cold start testing of the LDT-465-1C engine indicates that gasohol is of inadequate cetane number to sustain normal engine operation. Thus, it is recommended that gasohol not be used in the LDT-465 family of engines. (Author)

Descriptors :   *Fuels, *Engines, Ethanols, Gasoline, Blending, Fuel consumption, Energy conservation, Carburetors, Performance(Engineering), Dynamometers, Endurance(General), Test methods, Wear, Lubricating oils, Starting, Cetane number, Efficiency, Trucks

Subject Categories : Surface Transportation and Equipment
      Fuels

Distribution Statement : APPROVED FOR PUBLIC RELEASE