Multi-dimensional modeling of the application of catalytic combustion to homogeneous charge compression ignition engine
ABSTRACT The detailed surface reaction mechanism of methane on rhodium catalyst was analyzed. Comparisons between numerical simulation
and experiments showed a basic agreement. The combustion process of homogeneous charge compression ignition (HCCI) engine
whose piston surface has been coated with catalyst (rhodium and platinum) was numerically investigated. A multi-dimensional
model with detailed chemical kinetics was built. The effects of catalytic combustion on the ignition timing, the temperature
and CO concentration fields, and HC, CO and NOx emissions of the HCCI engine were discussed. The results showed the ignition timing of the HCCI engine was advanced and the
emissions of HC and CO were decreased by the catalysis.