Ignition operating method for a spark-ignition internal combustion engine with direct fuel injection feeds combustion air to a combustion chamber to ignite a fuel-air mixture at a set time

摘要

A 3-way catalytic converter heats up for a direct-injection spark-ignition Otto internal combustion engine and jet-controlled combustion. An amount of fuel injected during a cold start is divided into two injection actions (IA). The first IA occurs on an intake stroke to produce a lean fuel-air mixture in the whole combustion chamber and the second immediately prior to ignition point of time.