I've been working on a cool Hybrid animation and need some information on the HCH drive train.

Given that it has no torque converter and no typical clutch,
How does the CVT disengage the engine from the wheels?

I assume that the belt and conical gears are grooved.

Thanks

Efficient drivers do it better.
1003 miles a tank personal record. 74MPG calculated. HCH1 CVT