Engine Performance Analysis of Cylinder Deactivation System

Abstract

In this paper, the main research area is focus on the investigation of cylinder deactivation (CDA) technology on common engine part load conditions within common Malaysian driving condition. CDA mostly being applied on multi cylinders engines. It has the advantage in improving fuel consumption by reducing pumping losses at part load engine conditions. Here, the application of CDA on 1.6 liter four cylinders gasoline engine is studied. One-dimensional (1-D) engine modeling is performed to compare the performance between CDA and normal modes. Also, the predicted in-cylinder combustion diagrams as well as pumping losses are presented. The study shows that the CDA mode has very significant effect on the engine performance. Pumping losses is found to be reduced, thus improving fuel consumption and engine thermal efficiency.