Motor system
AssigneeMazda Motor Corporation
InventorsYusuke Nakao, Yoshitomo Takahashi
Life of this patent
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Abstract
A motor system includes a motor, a slide bearing supporting a rotation shaft of the motor, an oil passage and a refrigerant passage for respectively supplying oil and a refrigerant (a CO2 refrigerant) into the slide bearing to lubricate the slide bearing, a refrigerant passage for supplying the refrigerant into the motor to cool the motor, and a seal that is supplied with oil and uses the oil to seal a gap between a portion of the rotation shaft extending outward from a housing of the motor. The oil passage supplies the oil to a position on the seal side in an axial direction in the slide bearing, and the refrigerant passage supplies the refrigerant to a position on the rotor side in the axial direction in the slide bearing.
Claims12
A motor system comprising:
- a motor that includes a rotor, a stator, a rotation shaft coupled to the rotor, and a housing accommodating the rotor, the stator, and the rotation shaft;
- a slide bearing that is lubricated by fluids and supports the rotation shaft of the motor;
- a first passage and a second passage for supplying, as the fluids, a first fluid and a second fluid having a lower viscosity than the first fluid into the slide bearing;
- a third passage for supplying the second fluid into the motor to cool the motor;
- and
- a seal that is supplied with the first fluid and uses the first fluid to seal a gap between a portion of the rotation shaft extending outward from the housing of the motor and the housing, wherein
- the first passage supplies the first fluid to a position on a seal side in an axial direction of the slide bearing, and
- the second passage supplies the second fluid to a position on a rotor side in the axial direction of the slide bearing.
Dependencies are inferred from the claim text.