Quote:
Originally Posted by dragoontwo
When you're driving hard, it likely isn't using the motor to spool the turbo at all. It read like the motor only generates boost until the exhaust gasses overtake it, then uses the motor to control your boost level.
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That's right, but in spirited driving you constantly get on and off boost, and I think the electric assist motor would need to work each time you get back on boost, even if you keep the RPM high. If the electric assist is only needed in full out of boost situations (like the examples of low RPM in gear acceleration from the article) this would indeed be less of a concern.
My main concern is that this tech would be aimed at allowing for big HP numbers together with high MPG numbers, together with a responsive low end for the casual driver who wants to mash the throttle at the highest gear doing 50 MPH and overtake on the highway. This won't necessarily get an enthusiast friendly engine (as is the common complaint of your typical turbocharged engine today - lack of high end power and character).