WEAR IN HIGH SPEED DIESEL ENGINES OPERATING ON POWER ALCOHOL AS PRINCIPAL FUEL .

Abstract

Wear tests were conducted with a single cylinder, direct injection,5 H.P.-1,500 r.p.m. diesel engine for a period of 1,000 hours using power alcohol as principal fuel. During the first 500 hours of the test,an alcohol-water blend (85-15 by vol.) was inducted with the inlet air and neat alcohol was inducted during the remaining period. Throughout the test H.S.D. oil was injected in the normal way to initiate combustion.It is concluded from these tests that prolonged operation of a diesel engine with neat alcohol as the principal fuel does not lead to any adverse effect on the rate of wear. Besides, there is a noticeable reduction of engine deposits. While the presence of water is conducive to engine cleanliness it is advisable to restrict its content in the blend on account of its adverse effect on wear.