Enhancement Of Engine Performance & Efficiency by Replacing Existing Cavity Piston to Flat Top Piston
Amol Chede
This document synthesizes research findings regarding the impact of piston crown modifications, specifically top bowl geometries, on the performance of Compressed Natural Gas (CNG) engines. It presents a detailed analysis of the enhancement of engine performance by replacing cavity pistons with flat-top piston geometry in CNG engines. The study discusses combustion characteristics, thermal efficiency, brake power, emissions, turbulence generation, flame propagation, and fuel economy. It highlights how variations in tumble flow, turbulence kinetic energy (TKE), and air-fuel mixing, driven by geometric constraints, lead to significant improvements in thermal efficiency and power output.