Hybrid vehicle system

Patent metadata

Field	Value
Publication number	US-2017282904-A1
Application number	US-201715454095-A
Country	US
Kind code	A1
Filing date	Mar 9, 2017
Priority date	Mar 29, 2016
Publication date	Oct 5, 2017
Grant date	—

Abstract

A hybrid vehicle system includes: an engine that is capable of outputting a torque to be transmitted to a driving wheel; a first motor generator that is provided in a coupled manner to the engine and that is capable of outputting a torque to be transmitted to the driving wheel; a transmission that converts a torque output from one or both of the engine and the first motor generator at a predetermined transmission gear ratio; a transmission clutch that is capable of switching on and off power transmission between the first motor generator and the transmission; a second motor generator that is capable of outputting a torque to be transmitted to the driving wheel in a state where the transmission clutch is disengaged; and an oil pump that is coupled to a motor shaft of the first motor generator and that is driven by rotation of the motor shaft.

First claim

1 . A hybrid vehicle system comprising:
an engine that is capable of outputting a torque to be transmitted to a driving wheel; a first motor generator that is provided in a coupled manner to the engine and that is capable of outputting a torque to be transmitted to the driving wheel; a transmission that converts a torque output from one or both of the engine and the first motor generator at a predetermined transmission gear ratio; a transmission clutch that is capable of switching on and off power transmission between the first motor generator and the transmission; a second motor generator that is capable of outputting a torque to be transmitted to the driving wheel in a state in which the transmission clutch is disengaged; and an oil pump that is coupled to a motor shaft of the first motor generator and that is driven by rotation of the motor shaft.

2 . The hybrid vehicle system according to claim 1 , comprising
an engine clutch that is capable of switching on and off power transmission between the engine and the first motor generator.

3 . The hybrid vehicle system according to claim 2 ,
wherein the engine clutch is provided in the first motor generator.

4 . The hybrid vehicle system according to claim 1 ,
wherein the second motor generator is coupled to an input side of the transmission.

5 . The hybrid vehicle system according to claim 2 ,
wherein the second motor generator is coupled to an input side of the transmission.

6 . The hybrid vehicle system according to claim 1 ,
wherein the second motor generator is coupled to an output side of the transmission.

7 . The hybrid vehicle system according to claim 2 ,
wherein the second motor generator is coupled to an output side of the transmission.

8 . The hybrid vehicle system according to claim 6 , comprising
an output side transmission clutch that is capable of switching on and off power transmission, between the transmission and the second motor generator.

9 . The hybrid vehicle system according to claim 7 , comprising
an output side transmission clutch that is capable of switching on and off power transmission, between the transmission and the second motor generator.

10 . The hybrid vehicle system according to claim 1 , comprising
a second oil pump that is coupled to a crankshaft of the engine and that is driven by an output torque from the engine, while the oil pump is a first oil pump.

11 . The hybrid vehicle system according to claim 2 , comprising
a second oil pump that is coupled to a crankshaft of the engine and that is driven by an output torque from the engine, while the oil pump is a first oil pump.

12 . The hybrid vehicle system according to claim 1 , comprising
a control device that controls the hybrid vehicle system, wherein the control device is capable of executing
a hybrid traveling mode in which the driving wheel is driven by an output torque from the engine and an output torque from at least one of the first motor generator and the second motor generator, and
a motor traveling mode in which the driving wheel is driven by an output torque from at least one of the first motor generator and the second motor generator.

13 . The hybrid vehicle system according to claim 2 , comprising
a control device that controls the hybrid vehicle system,
wherein the control device is capable of executing
a hybrid traveling mode in which the driving wheel is driven by an output torque from the engine and an output torque from at least one of the first motor generator and the second motor generator, and
a motor traveling mode in which the driving wheel is driven by an output torque from at least one of the first motor generator and the second motor generator.

14 . The hybrid vehicle system according to claim 12 ,
wherein the control device disengages the transmission clutch and drives the oil pump by an output torque from the first motor generator while executing a single motor electric vehicle traveling mode in which the driving wheel is driven by only a torque output from the second motor generator.

15 . The hybrid vehicle system according to claim 13 ,
wherein the control device disengages the transmission clutch and drives the oil pump by an output torque from the first motor generator while executing a single motor electric vehicle traveling mode in which the driving wheel is driven by only a torque output from the second motor generator.

16 . The hybrid vehicle system according to claim 12 ,
wherein, when starting the engine, the control device cranks the engine by using an output torque from the first motor generator in a state in which the transmission clutch is disengaged, and starts the engine.

17 . The hybrid vehicle system according to claim 13 ,
wherein, when starting the engine, the control device cranks the engine by using an output torque from the first motor generator in a state in which the transmission clutch is disengaged, and starts the engine.

18 . The hybrid vehicle system according to claim 12 ,
wherein the control device disengages an engine clutch that is capable of switching on and off power transmission between the engine and the first motor generator, while executing a twin motor electric vehicle traveling mode in which the driving wheel is driven by torques output from the first motor generator and the second motor generator.

19 . The hybrid vehicle system according to claim 13 ,
wherein the control device disengages an engine clutch that is capable of switching on and off power transmission between the engine and the first motor generator, while executing a twin motor electric vehicle traveling mode in which the driving wheel is driven by torques output from the first motor generator and the second motor generator.

Assignees

• Fuji Heavy Ind Ltd

Inventors

• Morita Tomohiro

Classifications

• Y10S903/93

  Conjoint control of different elements · CPC title

• Y02T10/7072

  Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors · CPC title

• B60W2510/0208

  Clutch engagement state, e.g. engaged or disengaged · CPC title

• B60W20/40 Primary

  Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers {(power-up or power-down of the driveline B60W30/192)} · CPC title

• B60W10/02

  including control of driveline clutches · CPC title