Four-Cylinder, Naturally Aspirated, Two-Stroke Automotive Engines - A Performance Potential Evaluation

A thermodynamic model developed at The Queen's University of Belfast is used to demonstrate the importance of exhaust system design for four cylinder two-stroke engines. The investigation considers two exhaust layouts for in-line engines and also a V or opposed piston layout. The influence of the major exhaust parameters on wide open throttle power and bmep is investigated.