[특허]Differential lock control system for agricultural vehicles

Differential lock control system for agricultural vehicles 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60K-041/00
출원번호	US-0338409 (1994-11-14)
발명자 / 주소	Orbach Abraham (Naperville IL) Schubert William L. (Downers Grove IL)
출원인 / 주소	Case Corporation (Racine WI 02)
인용정보	피인용 횟수 : 56 인용 특허 : 0

초록 ▼

A control system for engaging, disengaging and re-engaging a differential locking mechanism in an agricultural vehicle includes a control circuit configured to receive signals representative of vehicle operating parameters and to generate control signals corresponding to the desired state (i.e. engaged or disengaged) of a differential locking mechanism for limiting relative velocity between two driven wheels. Sensors are associated with the rear wheels, rear service brakes, implement positioning circuit, the vehicle body and the front axle to provide parameter signals related to wheel speed, braking, implement position and vehicle speed. Control logic executed by the control circuit in a continuously cycled routine determines the desired state of the differential locking mechanism based upon the operating parameters. The control circuit applies an appropriate control signal to the differential locking mechanism causing engagement or disengagement in accordance with the desired state.

대표청구항 ▼

In an agricultural vehicle having an engine, at least two driven wheels, a differential for transmitting power from the engine to the driven wheels and permitting relative velocity between the driven wheels and a differential locking mechanism for limiting the relative velocity between the driven wheels in response to control signals, a control system comprising: a vehicle velocity sensor configured to detect a parameter related to the ground velocity of the vehicle and to generate a vehicle velocity signal representative thereof; a wheel velocity sensor configured to detect the velocity of at least one of the driven wheels and to generate a wheel velocity signal representative thereof; a comparator circuit coupled to the vehicle velocity sensor and to the wheel velocity sensor and configured to compare the vehicle velocity signal and the wheel velocity signal and to generate a slip signal representative of the degree of slip of the driven wheel; and a control circuit coupled to the comparator circuit and to the differential locking mechanism and configured to generate control signals when a predetermined degree of slip occurs and to apply the control signals to the differential locking mechanism to limit relative velocity between the driven wheels.

이 특허를 인용한 특허 (56)

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Hoots, David C.; Bliss, Barry D., Brake assembly having piloted park brake housing.
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Paggi Bruno,ITX ; Ribaldone Massimo,ITX, Braking control system for agricultural tractors.
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Weeramantry, Cecil A., Continuously variable hydro-mechanical transmission.
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Weeramantry, Cecil A.; Vu, Thomas H., Continuously variable hydro-mechanical transmission.
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Weeramantry,Cecil A., Continuously variable hydro-mechanical transmission.
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Watt John D. ; McMillen Richard E. ; Salzman Gerald E. ; Orsborn Jesse H. ; Faivre Stephen M. ; Morrow James G. ; Vogel Peter J., Control of vehicular systems in response to anticipated conditions predicted using predetermined geo-referenced maps.
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John F. Brackin ; Edward Freier, Jr., Differential and method for variable traction control.
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Smith Jerry F. ; Suckow David S., Differential lock control system.
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Smith, Brent A.; Breiner, Scott J.; Kelly, Andrew W., Differential lock control system and associated method.
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Nakamura, Kazuo, Differential locking control system.
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Izumi,Kazuhiko, Drive system for off-road vehicle.
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Orbach Abraham ; Schubert William L., Front wheel drive engagement control system for agricultural vehicles.
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David Mark Bevly ; Bradford Wells Parkinson ; Robert Lynn Mayfield, GPS control of a tractor-towed implement.
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Orbach Abraham ; Schubert William L., Hitch initialization control system.
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Brown, Gregory C., Hydraulic piston position sensor.
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Brown, Gregory C.; Johnson, James A.; Lovegren, Eric R., Hydraulic piston position sensor signal processing.
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Horsch Joachim, Hydro-mechanical transmission.
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Horsch Joachim, Hydro-mechanical transmission.
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Schakel Mark A., Method and apparatus for correcting drive wheel slip.
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Chan Danley C. ; Berger Alan D., Method and apparatus for sensing the orientation of a mechanical actuator.
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Gomez, Christophe, Method for operating a self-propelled agricultural machine.
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Hofler, Hans; Kurz, Thomas, Method for operating the torque converter lock-up clutch in a power transmission of a mobile machine comprising at least one hydraulically actuated lifting device.
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Anderson, Noel Wayne; Buerkle, Bryan Kirk; Dybro, Niels, Methods and apparatus to control machine configurations.
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Reiter, Dennis P.; Miller, Jeffrey D.; Scheer, Glenn O., Momentary activation of mechanical front wheel drive.
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Stelzle Michael ; Schubert William L. ; Itzenhuiser William A., Multiple setpoint power takeoff control system.
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Kato,Eiji; Izumi,Kazuhiko; Inui,Akira; Tanaka,Norihiko; Nash,Colby, Off road vehicle with air intake system.
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Kato, Eiji; Izumi, Kazuhiko; Inui, Akira; Tanaka, Norihiko; Nash, Colby, Off-road vehicle with air intake system.
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Stelzle Michael ; Schubert William L. ; Itzenhuiser William A., Power takeoff control system.
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McCann, Gerry O.; Byers, Brian A.; Goraya, Fazal A.; Wisley, David R.; Grover, Kevin B., Powertrain system having lockable differential.
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Orbach Abraham ; Schubert William L., Precision control of implement position/motion.
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Rekow,Andrew Karl Wilhelm, System and method for calculating instantaneous placement corrections to achieve towed implement placement on curved paths.
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Brownell, Douglas K.; McKinzie, Kyle K., System and method of detecting load forces on a traction vehicle to predict wheel slip.
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Hertel, Benjamin J.; Janasek, Clayton G.; Horstman, Nathan J., System and method of reacting to wheel slip in a traction vehicle.
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Hertel, Benjamin J.; Janasek, Clayton G.; Theusch, Jeffrey L., System and method of reacting to wheel slip in a traction vehicle.
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Shull, Andrew G., System for controlling implement position.
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Marathe, Sameer S.; Marks, Scott A.; Holt, Bradford J., Traction control method in machine using lockable differential.
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Kato, Eiji; Hayes, Rusty; Nash, Colby; Cheek, Joel, Transmission for off-road vehicle.
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Hoots, David C.; Bliss, Barry D., Wet brake assembly.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Differential lock control system for agricultural vehicles 원문보기

초록 ▼

대표청구항 ▼

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이 특허를 인용한 특허 (56)

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Differential lock control system for agricultural vehicles 원문보기

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이 특허를 인용한 특허 (56)

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