A cooling and lubrication device of an electric drive assembly and an electric drive assembly are disclosed. The cooling and lubrication device comprises an oil pumping unit, an oil pumping passage, and an oil returning passage. The oil pumping passage com...

A hydraulic system (10) for a vehicle comprises a transmission lube circuit (12), a main pump (20), and a variable displacement charge pump (24) for supplying charge fluid to the main pump (20). The variable displacement charge pump (24) has a charge pump ...