Automakers continue to debate what the transport of the future should be. Some are betting on electric vehicles, others are developing hybrids, and still others are experimenting with range-extender systems. Judging by Porsche's new patent, the German brand wants to get all the benefits at once.
The discovered patent application describes an unusual powertrain capable of operating in several modes. Depending on the conditions, the car can behave as a full-fledged electric vehicle, as a series hybrid with an engine-generator, or as a classic hybrid where the gasoline engine directly participates in driving the wheels.
The key feature of the development lies in the design of the internal combustion engine. Porsche proposes using two different cylinder blocks with different tasks. One is focused on maximum efficiency and minimal energy losses, the other on performance and dynamics.
Unlike traditional cylinder deactivation systems, this is not just about temporarily shutting down part of the engine. Each block has its own technical solutions. For example, the "economical" part of the engine will receive ceramic bearings and a reduced number of piston rings to reduce internal friction.
In theory, such a scheme would allow the car to travel on electric power most of the time. If an increase in range is needed, the economical cylinder block will start, working as a generator to recharge the battery. And during active acceleration or sporty driving, the full gasoline part of the powertrain will engage, transmitting power directly to the wheels.
The development is particularly noteworthy against the backdrop of Porsche's challenging electrification. The company has already faced slowing demand for electric vehicles and delays in individual projects. Therefore, finding more flexible technical solutions seems like a logical step.
However, the concept also has an obvious drawback. Combining a large battery, an internal combustion engine, electric motors, and a complex transmission inevitably increases the car's weight. And for Porsche, where handling has always been considered one of the main priorities, excess weight remains a serious problem.
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