Development of a Gasoline HCCI Engine Control System (Fifth Report)

-Investigation of a Combustion Switching Method under the Transient Operation Conditions-

Abstract

One of the main issues for the gasoline HCCI engine system is a realization of SI-HCCI combustion switching. A combustion switching control method was proposed in the previous report, which controls A/F ratio and internal EGR rate strictly. However, the previous report focused on a combustion switch under the steady operation conditions. In this paper, a combustion switching method under the transient operation conditions is investigated. A control algorithm is proposed in the basis of the combustion switching concepts. Its validity is confirmed from the experimental results.