A compression ignition engine, a control system for a compression ignition engine, and a method of controlling an engine and computer program product

摘要

There is provided a control system for a compression ignition engine, which includes an engine configured to combust a mixed gas inside a combustion chamber by a compression ignition, a fuel injector fixed to the engine, a condition setting function A part fixed to the engine and configured to set at least one introduction of fresh air into the combustion chamber, a three-way catalyst provided in an exhaust passage of the engine, a wall temperature sensing part configured to be a parameter which relates to a temperature of a wall of the combustion chamber and includes a controller. An eddy current is generated inside the combustion chamber to circulate along the wall. When the wall temperature of the combustion chamber is below a given wall temperature, the controller sets an air-fuel ratio of the mixed gas to substantially a stoichiometric air-fuel ratio to remain within a cleaning window of the three-way catalyst.