Engine injection valve switch off control

摘要

The system to switch off the injection valve, in a vehicle fuel combustion motor, uses a preset injection vol. (ti) required to increase the actual exhaust catalyst temp. (Tkat). While the switch-off control (ZA=1) is activated, the preset injection vol. (ti) is injected at least at times, if the exhaust catalyst temp. (Tkat) is below a given threshold (Ts).