Author : Bayas Jagadishsingh G. and N.P. Jadhav

Engine power & torque are greatly affected by degree to which cylinders are charged & the geometric aspects of intake manifold. Conventional intake manifolds have fixed length & geometry which is optimized for specific engine speed which is equal to maximum toque rpm of specified engine. Current work aims at studying & analyzing the effect of variable intake length on performance of single cylinder, four stroke IC engine. This will be analyzed with the help of engine simulation software & experimentation on an actual engine. Intake manifold with different intake lengths mounted on engine under test & the results are analyzed. The volumetric efficiency of engine found to be increased by varying the intake length. Engine toque & brake power observed to be improved at different engine speeds with the help of variable inertia charging system.

Keywords: Inertia charging, intake tuning, Plenum, VIL, 1-D CFD, Engine Simulation.