Quote:
Originally Posted by cRiPpLe_rOoStEr
I guess you know about that Fiat GSE Multiair engine which has been fitted to the Jeep Renegade. It has only kept the throttle plate as a source for vacuum to the brake booster. Throttling properly said is controlled by the variable timing of the intake valves, actuated hydraulically instead of by a camshaft.
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So it has a normally open throttle valve just to charge vacuum powered ancillaries during overrun and braking/ (free power)
I can see it getting hydraulic pressure to actuate, from the same pump that actuates the VVT, but, at a guess I'd say there's a torque sensor or 2 in the drive-train somewhere that picks up torque coming from the wheels and/or flywheel during overrun..?
Probably a braking sensor, involved in decisions to..?
The above discussed circuit would work off a torques sensor.
I must remember to research this.