2022 BMW 3 Series hybrid will be a revolutionary product - BMW Cars Review
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According to Autocar, BMW is not only embarking in a radical engineering of its hybrid tech, but also for all future models, including the Rolls Royce.The new architecture of BMW cars moved away from the welded steel bodies and engines that drive the rear wheels via conventional transmissions, and onto platforms made from a mix of steel, aluminum and composites and powertrains that use electric motors as the primary drive source.These materials are variously bonded, glued, screwed and riveted together. Using composites in strategic structural areas, such as the roof pillars and sills, allows thinner-skinned steel pressings to be used, saving weight and improving rigidity.The internal combustion engine is said to spend most of its time acting as a generator and running at peak efficiency.
Source : www.bmwblog.com