Quote:
Originally Posted by Madact
Interesting about the 'throttle-less' engine - you could probably get a similar effect by running EGR at WOT... could be a good way to set up an efficient cruise control, for example, just open the throttle and use a big fat EGR valve to control power  |
The reason you can't do this is because once the exhaust gas fraction is over 20% (less on some engines) it'll start to stumble. Plus, warm air is not as great as people here think, it increases the heat ratio and decreases thermodynamic efficiency. Running WOT with exhaust gas (even cooled) will probably induce knock.