IMPLEMENTATION OF EXHAUST GAS ENERGY TO ENHANCE THE PERFORMANCE AND EMISSION CHARACTERISTICS OF BIO-FUEL ENGINE

Abstract

Bio-ethanol, a kind of alternative fuel used on vehicles equipped internal
combustion engine. Ethanol has higher heat of vaporization value than gasoline
and lower reid of vapor pressure, thus the reduction of the intake manifold
temperature which effects engine performance especially at cold starting and
idling conditions. This paper present experimental study on using exhaust gas to
heat the intake manifold, thereby increasing intake mixture temperature, to
improve the combustion process of the engine, results in improvement of engine
performances. The study results show that, the specific fuel consumption of the
test engine improves remarkably and some gaseous emissions tend to be
reduced as the intake manifold be heated by exhaust gas