Hybrid Porsche cars will become lighter and more powerful thanks to a special electric motor
Porsche has registered a patent for a hybrid powertrain that combines compact and lightweight axial flux electric motors from supplier Yasa with an internal combustion engine.
What is known
The patent was registered with the World Intellectual Property Organization (WIPO). The document applies to any passenger car, but it specifically mentions use "in sports cars."
Instead of installing a relatively large radial flow electric motor in the PDK transmission case, as Porsche currently does in the 911 Carrera GTS, a thin axial flow disc electric motor will be located between the engine and the transmission.
The axial flow motor (also known as a "disc motor") is an electric motor where the magnetic flux passes parallel to the axis of rotation, unlike conventional radial motors where the flow is perpendicular to the axis. This allows for the creation of more compact, lightweight, and efficient designs with high specific power and torque, especially at low speeds.
The patent specifies that the electric motor and internal combustion engine will work together through a dual-clutch transmission. Thanks to the ultra-thin design of the electric motor (in some modern models, it is only 7.9 centimeters thick), it will not increase the length of the entire powertrain.
It is claimed that such a design contributes to lower heat generation. In combination with a permeable bowl- or bell-shaped chamber described in the document, the electric motor and internal combustion engine should receive sufficient cooling. The main question: how much power can this hybrid system generate?
It is known that Yasa's most powerful units achieve more than 470 hp and 800 Nm of torque. The hybrid Ferrari SF90 uses three Yasa engines with a total power of 217 hp, while two Lamborghini Revuelto engines develop just under 296 hp. But both of these systems work in combination with large V8 and V12 engines.
If Porsche combines the new axial flow motor with a 3.6-liter turbo engine, the total system power could exceed 800 hp.
Source: Carbuzz
