this post was submitted on 03 Jun 2024
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I don't know how much research/traction this idea has, but I've heard of a reverse hybrid system that seems to be a good solution in my mind. The electric engine operates the drivetrain, and the combustion engines runs continuously at its most efficient configuration to act as a generator for the electric engine. There's still a battery to store power, but the combustion engine will last MUCH longer due to consistent/stable RPMs and usage. Plus, you get the advantage of electric instant torque.
This is a very common setup, usually it’s diesel-electric. Diesel trains often work like this, it’s also used on submarines, ships, trucks, etc.
Edison motors. They've already got a working prototype electric diesel hybrid semi and have begun working on conversion kits. The big benefit is that when batteries eventually get good enough, you could just remove the diesel generator.
There was a report that Mazda was going to do this with their next release cycle, except they’re going to use Rotary engines because they can make small pancake ones shoved in the corner of a trunk do it.