Oil pump

Abstract

An oil pump includes a motor including a shaft disposed along a central axis extending in an axial direction, a rotor rotatable around the shaft, a stator disposed to face the rotor, a housing that accommodates the rotor and the stator, a pump including a pump rotor rotatable together with the shaft to suction and discharge oil, and a pump housing including an accommodation portion that accommodates the pump rotor. The pump housing includes an intake port through which the oil is suctioned, a discharge port through which the oil is discharged, and a pressure sensor disposed between the discharge port and the accommodation portion.

1 - 10 . (canceled) 
     
     
         11 . An oil pump comprising:
 a motor including a shaft disposed along a central axis extending in an axial direction, a rotor rotatable around the shaft, a stator disposed to face the rotor, and a housing that accommodates the rotor and the stator; and   a pump including a pump rotor rotatable with the shaft to suction and discharge oil, and a pump housing including an accommodation portion that accommodates the pump rotor; wherein   the pump housing includes an intake port through which the oil is suctioned, a discharge port through which the oil is discharged, and a pressure sensor which is disposed between the discharge port and the accommodation portion.   
     
     
         12 . The oil pump according to  claim 11 , wherein
 the discharge port includes a first discharge port and a second discharge port; and   the pressure sensor is disposed between any one of the first discharge port and the second discharge port and the accommodation portion.   
     
     
         13 . The oil pump according to  claim 12 , wherein
 in a state that the discharge port is fully opened, the second discharge port has a flow rate of the oil larger than a flow rate of the oil in the first discharge port; and   the pressure sensor is disposed between the accommodation portion and the second discharge port.   
     
     
         14 . The oil pump according to  claim 12 , wherein
 the pump includes a solenoid valve to adjust the flow rate of the oil discharged from the accommodation portion; and   the solenoid valve includes an opening and closing portion capable of opening and closing a flow path disposed between the discharge port and the accommodation portion.   
     
     
         15 . The oil pump according to  claim 14 , wherein
 the solenoid valve includes a second suction port through which pressurized oil discharged from the pump is suctioned, and a third discharge port through which the pressurized oil is discharged toward an oil pan that stores the pressurized oil;   the pump housing includes a pump body including the accommodation portion that accommodates the pump rotor and includes a side surface and a bottom surface located on the other side of the motor in the axial direction, a pump cover that closes an opening portion that opens from one side of the pump body in the axial direction to one side of the accommodation portion in the axial direction, and a receiving port that receives the oil discharged from the accommodation portion;   the pump cover includes a first flow path that communicates the receiving port with the first discharge port, and a second flow path that communicates the receiving port with the second discharge port;   the second flow path communicates the receiving port with the second discharge port through the second suction port of the solenoid valve; and   the second discharge port of the pump cover is connected to the third discharge port of the solenoid valve.   
     
     
         16 . The oil pump according to  claim 15 , wherein
 the pump cover is disposed on one side of the motor in the axial direction; and   an axial region of the pump cover is different from an axial region of the motor.   
     
     
         17 . The oil pump according to  claim 15 , wherein the pump cover includes a protruding portion that protrudes radially outward from an outer periphery of the motor, and the protruding portion includes the second flow path and the second discharge port. 
     
     
         18 . The oil pump according to  claim 17 , wherein the pressure sensor and the solenoid valve are fixed to the protruding portion and extend toward the motor. 
     
     
         19 . The oil pump according to  claim 17 , wherein the pressure sensor is disposed so that a longitudinal direction thereof is parallel or substantially parallel to the axial direction. 
     
     
         20 . The oil pump according to  claim 15 , wherein
 the second flow path extends in a direction orthogonal or substantially orthogonal to the axial direction of the motor and penetrates from an inside of the pump cover to an outer peripheral portion thereof; and   a seal is disposed at an opening end of the second flow path that opens to the outer peripheral portion of the pump cover.