Vehicle transmission system

Patent metadata

Field	Value
Publication number	US-11067139-B2
Application number	US-201816624309-A
Country	US
Kind code	B2
Filing date	Jun 18, 2018
Priority date	Jun 30, 2017
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

This vehicle transmission system includes a transmission ( 21 ), a clutch device ( 26 ), a clutch control unit ( 61 ), and a shift operation detecting means ( 48 ), and, when a hydraulic pressure is supplied from a clutch actuator ( 50 ) to a slave cylinder ( 28 ), the clutch device ( 26 ) moves to a connection side, in an in-gear stop state in which the transmission ( 21 ) is in an in-gear state, and a vehicle ( 1 ) is in a stop state, the clutch actuator ( 50 ) supplies a standby hydraulic pressure (WP) to the slave cylinder ( 28 ), and the clutch control unit ( 61 ) sets the standby hydraulic pressure (WP) to a first setting value (P 1 ) during non-detection in which a shift operation is not detected by the shift operation detecting means ( 48 ) and sets the standby hydraulic pressure (WP) to a second setting value (P 2 ) lower than the first setting value (P 1 ) when the shift operation is detected by the shift operation detecting means ( 48 ).

First claim

What is claim is:

1. A vehicle transmission system comprising:
a transmission of which transmission is performed in accordance with an operation of a driver of a vehicle;
a clutch device that is disposed between a power transmission path between the transmission and an engine of the vehicle and is coupled or decoupled in accordance with an operation of a clutch actuator;
a clutch control unit that controls coupling/decoupling of the clutch device according to the clutch actuator; and
a shift operation detecting means that detects a shift operation of the driver on a shift operator,
wherein, when a hydraulic pressure is supplied from the clutch actuator to a slave cylinder, the clutch device moves to a connection side,
wherein, in an in-gear stop state in which the transmission is in an in-gear state, and the vehicle is in a stop state, the clutch actuator supplies a standby hydraulic pressure to the slave cylinder, and
wherein the clutch control unit sets the standby hydraulic pressure to a first setting value during non-detection in which the shift operation is not detected by the shift operation detecting means and sets the standby hydraulic pressure to a second setting value lower than the first setting value when the shift operation is detected by the shift operation detecting means.

2. The vehicle transmission system according to claim 1 ,
wherein the shift operator is a shift pedal, and
wherein the clutch control unit sets the standby hydraulic pressure to the second setting value in a case in which a shift operation causing the shift pedal to swing to an upper side is detected by the shift operation detecting means.

3. The vehicle transmission system according to claim 1 , wherein the clutch control unit sets the standby hydraulic pressure to the second setting value in a case in which a shift operation of shifting a gear position of the transmission from a first speed to neutral is detected.

4. The vehicle transmission system according to claim 1 , wherein the clutch control unit continues a state in which the standby hydraulic pressure is set to the second setting value until a detection state in which the shift operation is detected by the shift operation detecting means transitions to a non-detection state in which the shift operation is not detected.

5. The vehicle transmission system according to claim 1 , wherein the clutch control unit continues a state in which the standby hydraulic pressure is set to the second setting value for a setting time determined in advance.

6. The vehicle transmission system according to claim 1 , further comprising:
a shift spindle that protrudes from a transmission case and is connected to the shift operator; and
a shift arm that is fixed to the shift spindle and transmits movement to the transmission side by swinging from a neutral position in accordance with the shift operation on the shift operator,
wherein the shift operation detecting means detects movement of the shift arm from the neutral position.

7. The vehicle transmission system according to claim 1 , wherein the clutch control unit determines that the vehicle is in the stop state in a case in which a vehicle speed is lower or equal to or lower than a setting value set in advance.

8. The vehicle transmission system according to claim 1 , wherein the clutch control unit determines that the vehicle is in the stop state in a case in which at least one of a throttle opening degree being lower than or equal to or lower than a setting value set in advance and an engine speed being lower than or equal to or lower than a setting value set in advance is satisfied.

Assignees

• Honda Motor Co Ltd

Inventors

• Ryuzaki Tatsuya
• Ono Junya

Classifications

• F16D48/02 Primary

  Control by fluid pressure · CPC title

• F16D48/068 Primary

  using signals from a manually actuated gearshift linkage · CPC title

• F16H63/46

  Signals to a clutch outside the gearbox · CPC title

• F16D2500/1026

  Hydraulic · CPC title

• F16D2500/1117

  Motorcycle · CPC title