Method of heating up catalyser while starting internal combustion (IC) engine

摘要

The method involves using an idling speed controller with proportional (P) and integral(I) parts which generates a fuel quantity control signal depending on a desired value and an actual value. A pre-fill controller (1) delivers a pre-filling quantity depending on temp which is added to the controller's output signal (mR) to raise the idling speed during the heating process. The pre-control value (mv) is reduced during the course of the heating process using access to the idling speed controller (2), e.g. PID-control.