Quote:
Originally Posted by wheel_of_steel
Don't we have a clash of concepts? CAB seems to welcome higher load levels (within closed loop operation), whereas DWL encourages the engine to be as lightly loaded as possible.
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I wouldn't say they clash, exactly - because
both techniques will return better economy than "conventional" driving techniques (eg. either constant speed or even constant throttle operation).
Yes, CAB (a.k.a. Pulse & Glide / P&G ) will return the best fuel economy (assuming the vehicle in question is not so unaerodynamic as to be unable to coast for a long enough distance to make it worthwhile). But P&G can also be a tedious technique to use for extended periods, and it's arguably harder on the vehicle mechanically than driving with load.
In the last few years, I have given up P&G driving (on the open road) in favour of driving with load / target MPG driving for those reasons. My fuel economy has decreased, but it's a tradeoff I can live with.