Quote:
Originally Posted by SkauneJohan
EGR function is to lower combustion temperature to reduce NOx--make the burning cooler, how this is supposed to help warming up engine is a riddle to me  |
When the hot exhaust fumes are recirculated at a cold start/cold engine, it will help warming up slightly. Not with every car, sometimes the EGR is deactivated untill operation temperature is reached, to improve smooth running.