Quote:
Originally Posted by tjts1
To ford's credit, the 1.0 is a closed deck iron block motor and at low load (highway cruising) they can use an open TB, open waste gate strategy that minimizes back pressure most of the time. Essentially functioning like an NA motor. The engine management strategy on most of Ford's ecoboost engine is completely different from the classic cable throttle and boost controlled wastegate we all know and love. That said, I still prefer a normal size 4 cyl non turbo motor with DI. The 2.0 mill in the focus is a descent sounding mill at high revs.
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Closed deck iron block? I'm not super well educated on this subject, what does the iron block do for it?
Certainly it's not the classic spring wastegate setup and throttle cable, all manufacturers have ditched at least the throttle cable already, but my question is sorta, how much can the wastegate really relieve pressure? A larger valve makes it harder to accurately manage exhaust pressure under load, so I don't imagine it's much larger than the typical wastegate, it's just that it can be opened before reaching a pressure threshold.
IMO positive displacement SC Miller cycle engines are the answer, but that's just me :P