A physics-based model of a HCCI engine with Electric Mechanical Valves

Homogeneous charge compression ignition (HCCI) engines create a cleaner and more efficient power source for either stationary power generators or hybrid vehicles. Control of HCCI engine, however, is difficult since its ignition cannot be actuated directly. For the purpose of model-based analysis and controller design, a model for a single cylinder HCCI engine with electric mechanical valves (EMV) is developed in this paper. This crank-angle-based model captures the effect of the amount of fuels and valve timings on the important performance variables such as combustion phasing, inlet charge, air-to-fuel ratio, temperature and pressure in the cylinder.