[특허]Traction control system and method for a vehicle

[미국특허] Traction control system and method for a vehicle 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06F-017/00
출원번호	UP-0359942 (2009-01-26)
등록번호	US-7792625 (2010-09-27)
발명자 / 주소	Hrovat, Davor Fodor, Michael McConnell, Mitch
출원인 / 주소	Ford Global Technologies, LLC
대리인 / 주소	Lippa, Allan J.
인용정보	피인용 횟수 : 5 인용 특허 : 21

초록

A traction control system adjusts powertrain output to reduce wheel slip, where a relationship between powertrain output and pedal actuation is adjusted in response to environmental conditions.

대표청구항 ▼

We claim: 1. A system for a vehicle, comprising: a traction control system to reduce wheel slip; an input device located in said vehicle that identifies an environmental condition; and a powertrain controller to control powertrain output based on actuation of a vehicle pedal, where a first relationship between said powertrain output and said vehicle pedal is adjusted in response to said input device when a vehicle driver is applying said vehicle pedal with active slip control provided by the traction control system and where a second relationship between said powertrain output and said vehicle pedal is applied to said vehicle after said vehicle driver releases said vehicle pedal, where after the release, pedal actuation provides direct control by the driver of powertrain torque without active slip control. 2. The system of claim 1 wherein said input device receives input from the vehicle driver. 3. The system of claim 1 wherein said input device receives input from a sensor that senses a condition of an environment outside the vehicle. 4. The system of claim 1 wherein said input device is a knob adjusted by the vehicle driver. 5. The system of claim 4 wherein said knob is configured to enable selections corresponding to driver identified road conditions. 6. The system of claim 1 wherein said first relationship is different from said second relationship, and wherein the controller further controls powertrain output based on actuation of the vehicle pedal via the first relationship, after application of the second relationship, once the vehicle is moving a sufficient amount. 7. A system for a vehicle, comprising: an accelerator pedal; and a controller, said controller having a first mode with a first relationship between a position of the accelerator pedal and a powertrain output, said first mode limiting powertrain output to reduce wheel slip while said vehicle is in a non-moving condition, and said controller activating a second mode after a driver releases said accelerator pedal, said second mode having a second relationship between said accelerator pedal position and said powertrain output, where during the second mode, pedal actuation provides direct control by the driver of powertrain torque without active slip control. 8. The system of claim 7 wherein said first relationship is different from said second relationship and wherein a speed of said vehicle is substantially zero. 9. The system of claim 8 wherein during said second mode, said powertrain output is gradually increased relative to said position of said accelerator pedal when said vehicle begins to move and said wheel slip falls below a threshold. 10. The system of claim 7 wherein said powertrain output is scaled with a position of said accelerator pedal. 11. The system of claim 7 further comprising upshifting an automatic transmission to reduce wheel slip. 12. The system of claim 7 further comprising adjusting a sensitivity of said accelerator pedal in response to a driver input. 13. The system of claim 7 where the second relationship between an accelerator pedal position and the powertrain output has a smaller range of authority, the controller further having a third mode with the first relationship between the position of the accelerator pedal and the powertrain output, said third mode limiting the powertrain output to reduce wheel slip while said vehicle is moving, said controller activating the third mode after the second mode, and after the vehicle is moving a sufficient amount. 14. A system for a vehicle, comprising: an accelerator pedal; and a controller, said controller having a first mode with a first relationship between a position of the accelerator pedal and a powertrain output, said first mode limiting powertrain output to reduce wheel slip while said vehicle is in a non-moving condition, and said controller activating a second mode after a driver releases said accelerator pedal, said second mode having a second, different, relationship with less gain between said accelerator pedal position and said powertrain output, where during the second mode, pedal actuation provides direct control by the driver of powertrain torque without active slip control, the controller further having a third mode with the first relationship between the position of the accelerator pedal and the powertrain output, said third mode limiting powertrain output to reduce wheel slip while said vehicle is moving, said controller activating the third mode after the second mode, and after the vehicle is moving a sufficient amount.

이 특허에 인용된 특허 (21) 인용/피인용 타임라인 분석

Yamashita Mitsugi (Nishio JPX), Driving force controller for an electric vehicle with electric motors provided for all driving wheels individually.
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Kichima Yutaka,JPX ; Inagawa Shinichi,JPX ; Ikegami Hiroshi,JPX, Driving force controller in vehicle for forcibly upshifting in response to a driving force traction controller and a veh.
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Eckert Alfred,DEX, Driving stability control circuit with speed-dependent change of the vehicle model.
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Eckert Alfred,DEX ; Kranz Thomas,DEX, Driving stability control system with selective brake actuation.
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Brooks Loran D. (Birmingham MI) Kidston Kevin S. (New Hudson MI), Electric vehicle with traction control.
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Hale William J. (Dayton OH) Paganini Bruno J. (Centerville OH), Electronic copy board system.
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Rees Susan L. (Clawson MI) Milunas Rimas S. (Rochester Hills MI) Nitz Larry T. (Troy MI) Bolander William J. (Clarkston MI), Integrated traction control system.
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Toshimichi Minowa JP; Hiroshi Kuroda JP; Satoru Kuragaki JP; Kenichirou Kurata JP; Tatsuya Ochi JP, Method and apparatus for controller power train of motor vehicle.
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Schmitt Johannes,DEX ; Isella Thomas,DEX ; Hessmert Ulrich,DEX ; Braun Michael,DEX ; Brueggemann Rainer,DEX, Method and device for controlling the wheel performance of a vehicle.
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Eckert Alfred,DEX ; Nederkoorn C. Jan S.,NLX, Method for determining a wheel brake pressure.
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Eckert Alfred,DEX, Method for determining an additional yawing moment based on side slip angle velocity.
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Schmitt, Johannes; Weiss, Tobias, Method for influencing the propulsion of a motor vehicle that is driven by a driving motor.
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Kresse,John P.; Hitch,Ronald P.; Hubbard,Gregory A., Motor vehicle powertrain control method for low traction conditions.
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Sako Masayuki,JPX ; Hirano Takuro,JPX ; Suo Shiro,JPX, Power steering device.
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Wanke Peter,DEX, System for controlling yaw moment based on an estimated coefficient of friction.
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Graber Johannes,DEX, System for driving stability control during travel through a curve.
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Eckert Alfred (Bodenheim DEX) Lammen Benno (Florsheim DEX) Wanke Peter (Frankfurt DEX) Worsdorfer Karl-Friedrick (Bodenheim DEX) Geiger Thomas (Freigericht/Neuses DEX) Graber Johannes (Eschborn DEX) , System for integrated driving stability control.
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Hughes Joseph L. (Belleville MI) Christensen Louis R. (Canton MI) Wade Wallace R. (Farmington Hills MI) Grutter Peter J. (Plymouth MI) Weyburne Michael A. (Northville MI), Torque managed traction control for the drive wheels of an automotive vehicle.
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Yagi Yoshifumi (Okazaki JPX) Nishikata Hirohito (Susono JPX) Miyago Showichi (Toyota JPX) Uchida Kiyoyuki (Toyota JPX), Traction control apparatus in which a driving force is increased when a stalling condition is detected.
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Hrovat Davorin D. ; Tran Minh N. ; Yester John L., Traction control for moving a vehicle from deep snow.
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Hrovat,Davor; Fodor,Michael; McConnell,Mitch, Traction control system and method for a vehicle.
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이 특허를 인용한 특허 (5) 인용/피인용 타임라인 분석

Reynolds, Timothy; Beever, Paul, Control method and apparatus for a vehicle.
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Wicks, Russel L.; Hartland, Derk; Putnam, Todd A., Interactive apparatus and methods for muscle strengthening.
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Mair, Roland, Method for freeing a vehicle by rocking.
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Zhang, Yingjie; Hirata, Junichi, Slip control device for electric vehicle.
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Choby, Jordan, Systems and methods for determining road mu and drive force.
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[미국특허] Traction control system and method for a vehicle 원문보기