Control device and vehicle with auto clutch, control method thereof, and vehicle

• US 20050283298A1
• Filed: 06/15/2005
• Published: 12/22/2005
• Est. Priority Date: 06/16/2004
• Status: Abandoned Application

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Okada, Takashi, Sakamoto, Hiroshi, Ozaki, Naoyuki, Minowa, Toshimichi, Ochi, Tatsuya
• Application Number:
  US11/152,145
• Publication Number:
  US 20050283298A1
• Time in Patent Office: Days
• US Class Current: 701/67
• CPC Class Codes: B60W 10/02 including control of driveline clutches
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/184 with wheel brakes
• CPC Class Codes: B60W 2510/0291 Clutch temperature
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2710/022 Clutch actuator position
• CPC Class Codes: B60W 30/1843 Overheating of driveline components B60W30/186 takes precedence
• CPC Class Codes: F16D 2500/30401 On-off signal indicating the engage or disengaged position of the clutch
• CPC Class Codes: F16D 2500/30404 Clutch temperature
• CPC Class Codes: F16D 2500/30426 Speed of the output shaft
• CPC Class Codes: F16D 2500/3108 Vehicle speed
• CPC Class Codes: F16D 2500/3127 Road slope
• CPC Class Codes: F16D 2500/31453 Accelerator pedal position threshold, e.g. switch
• CPC Class Codes: F16D 2500/50825 Hill climbing or descending
• CPC Class Codes: F16D 2500/50841 Hill hold
• CPC Class Codes: F16D 2500/5102 Detecting abnormal operation, e.g. unwanted slip or excessive temperature
• CPC Class Codes: F16D 2500/7044 Output shaft torque
• CPC Class Codes: F16D 2500/70458 Engine torque
• CPC Class Codes: F16D 48/068 using signals from a manually actuated gearshift linkage
• CPC Class Codes: F16H 35/10 Arrangements or devices for absorbing overload or preventing damage by overload for screw mechanisms F16H25/2021

Abstract

A control device and a control method for a vehicle with an auto clutch, and a vehicle with an auto clutch which is able to control the unexpected roll back of the vehicle caused by the security function when the abnormality of a clutch is detected. When temperature abnormality judgment means 102 detects the abnormality of temperature of clutch 3, clutch release command generation means 104 releases the clutch. When clutch release state judgment means 105 judges the release state of the clutch, braking force command generation means 106 outputs a command to generate the restraint force to brake actuator 6 in order to control the roll back of the vehicle. Brake actuator 6 generates the braking force to the vehicle.

Claims

1. A control device for a vehicle with an auto clutch which can automatically operate engaging force of the clutch which controls the driving force transferred from an engine to a transmission by an actuator, comprising;

an abnormal detection means which detects abnormality of said clutch,

a clutch release means which releases said clutch when abnormality of said clutch is detected by this abnormal detection means,

a clutch release state judgment means which judges the release state of said clutch by said clutch release means,

a restraint force command generation means which generates a command to generate the restraint force to restrain the roll back of said vehicle when judged that said clutch is released by said clutch release state judgment means, and

a restraint force generation means which generates the restraint force to restrain the roll back of said vehicle based on the command from said restraint force command generation means.

2. A control device for a vehicle with an auto clutch according to claim 1,

wherein said restraint force generation means is a brake actuator.

3. A control device for a vehicle with an auto clutch according to claim 1, wherein said transmission is a gear type transmission, and said restraint force generation means is a torque transfer means provided between an input shaft and an output shaft of said gear type transmission.

4. A control device for a vehicle with an auto clutch according to claim 1, wherein when the temperature of said clutch becomes more than the first predetermined temperature, said abnormal detection means detects the abnormality of temperature of said clutch.

5. A control device for a vehicle with an auto clutch according to claim 1, wherein said restraint force command generation means generates the command to generate the restraint force when the vehicle is running in the climb inclination, and the accelerator operation of driver is carried out.

6. A control device for a vehicle with an auto clutch according to claim 1, further comprising:

a temperature rise restraint command generation means which generates the command to restrain temperature rise of said clutch when temperature of said clutch becomes more than the second fixed temperature lower than said the first fixed temperature, and

a temperature rise restraint means which restrain the temperature rise of said clutch based on the command from said temperature rise restraint command generation means.

7. A control device for a vehicle with an auto clutch according to claim 6, wherein said temperature rise restraint means increases the clutch torque of said clutch, and increases and decreases the engine torque of said engine.

8. A control device for a vehicle with an auto clutch according to claim 6, wherein said temperature rise restraint means limits the start gear position of said transmission besides a high gear.

9. A control device for a vehicle with an auto clutch according to claim 6, wherein said temperature rise restraint means sets the shift diagram of said transmission in the high speed of car side.

10. A method of controlling a vehicle with an auto clutch which can automatically operate engaging force of the clutch which controls the driving force transferred from an engine to a transmission by an actuator, comprising the steps of:

releasing said clutch when abnormality of said clutch is detected,

generating a command to generate the restraint force to restrain the roll back of said vehicle when judged that said clutch is released, and

generating the restraint force to control the roll back of said vehicle.

11. A vehicle having an engine, a transmission, and an auto clutch which can automatically operate engaging force of the clutch which controls the driving force transferred from the engine to the transmission by an actuator, wherein said clutch is released when abnormality of said clutch is detected, and the restraint force to restrain the roll back of said vehicle is generated when judged that said clutch is released.