Hybrid
The HT1 transmission combines the VT3 hardware with an Switch Reluctance (SR) Electric Motor and forms the basis of a full hybrid, plug-in ready hybrid powertrain for B, C and D segment. Due to the high peak torque, the SR motor can be linked to the output side of the variator. As a result, it does not suffer from transmission losses during boosting or regeneration. Combined with the CVTs ability to have the engine operate in or near its optimum operating point, the HT1 is able to provide a fuel economy benefit which is far ahead of the competition.
The HT1 transmission can be used in following hybrid powertrains:
- Power hybrid: using the electric motor as additional power to the same combustion engine (e.g. 1.6 liter 4 cylinder). Apart from improved fuel economy, the performance is improved as well.
- Economy hybrid: using the electric motor to replace part of the combustion power. The combustion engine can be reduced in size (e.g. to 1.2 liter 3 cylinder) to further optimise the fuel economy, while the performance is kept at a similar level as the conventional (non hybrid) powertrain.
- Plug-in hybrid: The battery pack has been increased to allow a longer range of electric driving compared to the Economy hybrid. At the same time the charging can be done from the electric grid, which also allows to charge the batteries further and at lower costs. The engine in the example is still a 1.2 liter 3 cylinder.
- EV with range extender: Via a further extension of the battery pack compared to the plug-in hybrid variant, the electric driving range can be extended. A further downsized engine (e.g. 0.8 liter 2 cylinder) can be used to extend the range. Due to the parallel hybrid configuration the engine can also used as a booster.
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| HT1 |