PERFORMANCE CHARACTERISTICS OF A FOUR STROKE COMPRESSION IGNITION ENGINE BY VARYING DIAMETER OF THE INTAKE MANIFOLD

In automobiles an intake manifold is a part of engine that supplies and evenly distributes the air to the cylinder. The rate of airflow through an internal combustion engine is an important factor determining the amount of power the engine generates. A four stroke compression ignition engine with po wer 9 H.P and rated speed 1500 rpm is selected for performance calculation. With the change of intake manifold diameter the final velocity of the air entering the engine cylinder gets altered leading to the variation of many engine parameters which include s fuel consumption, power output, etc. For wide varying intake manifold diameters the performance characteristics of an engine are analyzed and compared with conventional diesel engines.