• Akash Deep

This paper enlightens about the use of offset crankshaft mechanism in the internal combustion engines. Now days in most of the I C engines, the offset mechanisms are used to increase the mechanical efficiency, increase the net torque output, reduce the lining contact between piston and cylinder inner lining, reduce the power loss due to friction, to produce smooth acceleration designs. The mechanism includes the piston-cylinder arrangement, crankcase, rotating crankshaft longitudinally attached within crankcase and offset with some predetermined length from vertical piston-cylinder axis. It also consists of arrangement of one ormore connecting rods to attach piston with the crankshaft. The procurement of the offset connecting rod is done in such a way that during the power stroke, offset crankshaft is mutually perpendicular to vertical axis of piston-cylinder and stroke length of modified engine remains same. Generally, long connecting rods increase the combustion chamber pressure at TDC and reduce the return stroke angle which reduces the friction between the piston-cylinder and promotes quick return action by reducing time for return stroke.

Offset crankshaft mechanism, computational analysis, twin crankshafts, friction mean effective pressure(FMEP), kinematic and dynamic analysis, computational analysis, evaluation of torque, quick return action.

"Analysis of Offset Crankshaft Mechanism In The Internal Combustion Engines", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.1058-1063, April-2019, Available :http://www.jetir.org/papers/JETIREL06158.pdf

"Analysis of Offset Crankshaft Mechanism In The Internal Combustion Engines", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp1058-1063, April-2019, Available at : http://www.jetir.org/papers/JETIREL06158.pdf