Oil pump, engine cover and engine comprising the same
AssigneesShenzhen BYD Auto R&D Company Limited, BYD Company Limited
InventorsJunli Zheng, Jing Liu, Haibin Li, Jinchen Lin
Life of this patent
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Abstract
An oil pump is provided. The oil pump comprises a shell, a rotor mounting part on the shell, and a rotor mechanism disposed on the rotor mounting part. The shell has an inlet and an outlet and defines a low-pressure oil chamber and a high-pressure oil chamber therein. A buffer chamber is defined between the low-pressure oil chamber and the high-pressure oil chamber, and a barrier wall is disposed between the buffer chamber and the low-pressure oil chamber. An engine cover comprising the oil pump and an engine comprising the engine cover are also provided.
Claims14
An oil pump, comprising:
- a shell having an inlet and an outlet and defining a low-pressure oil chamber and a high-pressure oil chamber therein, the low-pressure oil chamber having a low-pressure oil passage connected to the inlet, and the high-pressure oil chamber having a high-pressure oil passage connected to the outlet;
- a rotor mounting part on the shell and having a rotor supporting structure;
- and
- a rotor mechanism disposed on the rotor mounting part,
- wherein a buffer chamber is defined between the low-pressure oil chamber and the high-pressure oil chamber, and a barrier wall is disposed between the buffer chamber and the low-pressure oil chamber.
An engine cover, comprising:
- an engine cover body, and
- an oil pump disposed on the engine cover body, the oil pump further including:
- a shell having an inlet and an outlet and defining a low-pressure oil chamber and a high-pressure oil chamber therein, the low-pressure oil chamber having a low-pressure oil passage connected to the inlet, and the high-pressure oil chamber having a high-pressure oil passage connected to the outlet;
- a rotor mounting part on the shell and having a rotor supporting structure;
- and
- a rotor mechanism disposed on the rotor mounting part,
- wherein a buffer chamber is defined between the low-pressure oil chamber and the high-pressure oil chamber, and a barrier wall is disposed between the buffer chamber and the low-pressure oil chamber and the shell of the oil pump is integral with the engine cover.
Dependencies are inferred from the claim text.