Modelling of Biogas Fueled HCCI Engine for Various Inlet Conditions

Abstract

A common technique for using biogas in a compression ignition (CI) engine is to blend it with air in the intake manifold, injecting a small quantity of diethyl ether during suction stroke and compress this mixture and ignite it by self-ignition temperature. This is called as homogeneous charge compression ignition (HCCI) mode. This paper evaluates the effects of various intake conditions such as methane fraction, compression ratio, diethyl ether energy fraction, intake temperature and equivalence ratio on output parameters of maximum cylinder pressure, in-cylinder temperature and indicated thermal efficiency using single zone modelling. The modelling result is validated with the experimental data. The increase in compression ratio, diethyl ether energy fraction and intake temperature increase cylinder pressure and in-cylinder temperature.