Oil pumps

Oil pump

Greater comfort and better fuel economy are much in demand for today’s new vehicles. Both automatic start/stop systems and hybrid vehicles are exemplary developments in this direction. But as well as the engine, it is also necessary to consider components such as the automatic transmission. In conventional vehicles, the internal combustion engine drives an oil pump that in turn builds up the necessary control pressure. When the engine is at rest, this pump also stops and the pressure drops. Newer models therefore have an electrically driven pump in the gearbox to continually provide control pressure and ensure it can change gear immediately at any time – even while the engine is not running. This pump is driven by a robust, electronically commutated DC motor that operates reliably in the transmission oil.