An Investigation of Controlling Heat Release Rate for Reducing Noise in Split-injection PCCI Engine

- 0-dimensional Numerical Analysis Using Elementary Reactions -

Abstract

A combustion method called Noise Cancelling Spike (NC-Spike) Combustion has been reported in the co-author’s previous paper, which reduces combustion noise in pre-mixed charge compression ignition with split injection. The overall combustion noise was reduced by lowering the maximum frequency component of the noise spectrum. In this paper, we investigates feasibility and controllability of the two-peak heat release rate during high temperature heat release by adding fuel in the adiabatic compression process of pre-mixed gas. The results show that the certain fuel addition timing generates the second heat release, and the interval of peak heat release rate could be controlled.