That little spark is what ignites the mixture and pushes the piston back up. The other type of combustion engine is a ...

They're also more fuel-efficient than their turbojet counterparts. As for similarities, both types of engines draw air into a compressor, the beginning of the engine's core, increasing the air's ...

Unlike cars, which have their engines placed at the front or rear of the cabin, boats have four basic types of engines. These four types have different placement methods and have their own advantages.