Continuous variable compression ratio technology for next generation engine

Abstract

Continuous and Discontinuous (Stepwise) Variable compression Ratio Engine in one of the most widely acceptable methods in terms of efficiency and performance. Even though this. method was not new. it is still not ready for manufacturing due to many mechanical drawbacks, such as heavy weight, high inertia force, heat accumulation, too many component parts, vibration, leakage of engine oil, high energy consumption, low precision, causes of problems for other part that work together, and high cost. Today, there are more than 250 patents worldwide the relate to this systim. Thus, this paper presents the background of this technology, mechanism categories, analysis of strength and weakness, and summary of highest potential mechanism pattern for line production of new generation engines.