Method of and device for controlling after-start enrichment of internal combustion engine

摘要

Injection control pulses after starting the engine are multiplied by a fuel enrichment factor A1 depending on operational temperature and rotary speed of the engine. The time derivative -A/t of the enrichment factor is kept constant up to a predetermined rotary speed limit. When the speed limit is exceeded, the time derivative increases proportionally with the rotary speed increase. In this manner faster warm-up of the engine due to higher speeds influences the fuel enrichment phase.