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As I understand it, the throttle body is basically wide open all the time, and the engine is controlled completely by the VVEL system - where the intake timing/lift/duration is
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07-25-2009, 06:04 PM
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A True Z Fanatic
Join Date: Jun 2009
Location: Jenks, OK
Posts: 2,281
Drives: 370z Touring/Sport
Rep Power: 267   |
question about VVEL, throttlebody, and drive by wire...
As I understand it, the throttle body is basically wide open all the time, and the engine is controlled completely by the VVEL system - where the intake timing/lift/duration is varied to increase/decrease to increase or decrease RPM and/or power.
So...with that, the VVEL system is powered by a DC motor...one for each bank of cylinders, where it controls the lift/duration/timing part of the whole equation (I there's an eccentric shaft that replaces the camshaft, I know...) What happens if one (or both) DC Motor(s) fails and locks up, and say you're going 75MPH down the highway? |
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