Yes, it would be a parallel hybrid, of the 'through-the-road' type as Brian said (I hadn't seen that term before, thanks for the new word!).Thank you for the information Brian but I guess I’m just especially dense on this topic. Do I have the below written correctly?
If a rear engine car had an independent electric axle upfront, it would be considered a Parallel hybrid. Because the motors are disconnected from one another and paralleled through the road.
And remain a parallel hybrid when under braking or zero throttle the electric axle regenerates power back into the e-axle driving battery pack.
but the minute the regen is activated while the car is being powered by the gasoline rwd engine it becomes an inefficient series hybrid, because you are using rear mounted gas engine to power up the battery of the front e-axle.
The 996 has no torque split controller -- it's just a viscous coupler to the front end. Some versions have stability control (keeps the car pointing straight), others have traction control (anti-wheelspin). Traction control is rear-only, it's a virtual LSD using the brakes. But there are no electronics controlling the torque split, only the viscous clutch/coupler - someone quoted 15% torque normally, up to 45% after extended rear slippage.Isaac97's idea of using the now unused output shaft of the AWD transmission is a good one if a generator can be appropriately sized for the RPM range. I'm not sure on the SW controls the cars have regarding torque split between the rear diff and front diff... i assume some custom ECU work would be required to determine the right amount of torque split to the generator based on the state of charge of the battery.