KR0185071B1 - Control apparatus of non-stage transmission for a tractor - Google Patents
Control apparatus of non-stage transmission for a tractor Download PDFInfo
- Publication number
- KR0185071B1 KR0185071B1 KR1019960032156A KR19960032156A KR0185071B1 KR 0185071 B1 KR0185071 B1 KR 0185071B1 KR 1019960032156 A KR1019960032156 A KR 1019960032156A KR 19960032156 A KR19960032156 A KR 19960032156A KR 0185071 B1 KR0185071 B1 KR 0185071B1
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- South Korea
- Prior art keywords
- valve
- control
- power amplifier
- sensor
- variator
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
- F16H61/0213—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
- F16H59/18—Inputs being a function of torque or torque demand dependent on the position of the accelerator pedal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/50—Inputs being a function of the status of the machine, e.g. position of doors or safety belts
- F16H59/54—Inputs being a function of the status of the machine, e.g. position of doors or safety belts dependent on signals from the brakes, e.g. parking brakes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2300/00—Indexing codes relating to the type of vehicle
- B60W2300/15—Agricultural vehicles
- B60W2300/152—Tractors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/08—Range selector apparatus
- F16H2059/082—Range selector apparatus with different modes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/36—Inputs being a function of speed
- F16H59/44—Inputs being a function of speed dependent on machine speed of the machine, e.g. the vehicle
- F16H2059/443—Detecting travel direction, e.g. the forward or reverse movement of the vehicle
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
본 발명은 마이크로 프로세서를 이용하여 트랙터를 제어함으로써 안정성을 확보하고, 트랜스미션을 효율적으로 제어하며, 최적부하상태의 작업설정, 저소음, 연료절감등을 얻을 수 있도록 한 트랙터용 무단변속기 제어장치에 관한 것으로, 전후진감지센서(1), 최고 속도조절감지센서(2), 가속조절감지센서(3), 브레이크 조절감지센서(4), 엔진속도 감지센서(5), 베리에이터 속도 감지센서(6), 출력축 속도 감지센서(7)로 이루어진 감지부(8)와, 상기 각 감지부(8)의 아날로그 신호를 디지탈 신호로 변환시키는 A/D콘버터부(15), 와 상기 A/D콘버터부(15)를 통하여 변환된 디지탈 신호를 입력 받아 해당되는 제어를 수행하는 마이크로 프로세서(16)와, 상기 마이크로 프로세서(16)의 출력전력을 소정레벨로 증폭시켜 밸브를 구동시킬 수 있도록 하는 전력증폭부(17)와, 상기 전력증폭부(17)를 통하여 증폭된 신호의 펄스폭을 가변시켜 출력값을 조절하는 모듈레이터(18)와, 상기 전력증폭부(17)의 출력단에 접속되어 방향을 제어하는 방향 제어밸브(19)와, 상기 전력증폭부(17)의 출력단에 접속되어 클러치의 모드를 조절하는 클러치 밸브부(20)와, 상기 모듈레이터(18)의 출력단에 접속되어 베리에이터를 조절하는 베리에이터 밸브부(21)와, 상기 전력증폭부(17)의 출력단에 접속된 전후진 밸브(22)로 이루어진다.The present invention relates to a continuously variable transmission control apparatus for a tractor that ensures stability by controlling a tractor using a microprocessor, efficiently controls a transmission, and obtains a work setting of an optimum load state, low noise, and fuel saving. , Front and rear detection sensor (1), maximum speed control sensor (2), acceleration control sensor (3), brake control sensor (4), engine speed sensor (5), variator speed sensor (6) A detection unit 8 including an output shaft speed sensor 7, an A / D converter unit 15 for converting the analog signal of each detection unit 8 into a digital signal, and the A / D converter unit ( A microprocessor 16 which receives the converted digital signal through 15 and performs a corresponding control; and a power amplifier which amplifies the output power of the microprocessor 16 to a predetermined level to drive the valve ( 17) and, Modulator 18 for adjusting the output value by varying the pulse width of the signal amplified by the electromotive power amplifier 17, and the direction control valve 19 is connected to the output terminal of the power amplifier 17 to control the direction And a clutch valve portion 20 connected to an output end of the power amplifier 17 to adjust a mode of the clutch, and a variator valve portion 21 connected to an output end of the modulator 18 to adjust a variator. And a forward and backward valve 22 connected to an output end of the power amplifier 17.
Description
본 발명은 트랙터용 무단변속기 제어장치에 관한 것으로, 특히 마이크로 프로세서를 이용하여 무단변속기를 제어함으로써 안정성을 확보하고, 트랜스미션을 효율적으로 제어하며, 최적부하상태의 작업설정, 저소음, 연료절감등을 얻을 수 있음은 물론 작동의 편이성을 얻을 수 있도록 한 트랙터용 무단변속기 제어장치에 관한 것이다.The present invention relates to a continuously variable transmission control device for a tractor, in particular, by using a microprocessor to control the continuously variable transmission to secure stability, efficiently control the transmission, and obtain the optimum load condition work setting, low noise, fuel saving, etc. The present invention relates to a continuously variable transmission control device for a tractor that can of course obtain convenience of operation.
종래 트랙터용 무단 변속기에 있어서는, 마이크로 프로세서를 이용하지 않아 안정성이 저하되며, 트랜스미션을 효율적으로 제어할 수 없을뿐 만 아니라 최적부하상태의 작업설정을 하기가 어려웠고, 소음이 발생함은 물론 연료가 많이 소비되는 문제가 있었다.In conventional continuously variable transmissions for tractors, the stability is reduced by not using a microprocessor, it is not only difficult to efficiently control the transmission, but also it is difficult to set the optimum load condition, noise is generated, and a lot of fuel is used. There was a problem of consumption.
또한, 전자제어를 수행할 수 없어 작동이 용이하지 않은 문제점도 있었다.In addition, there was a problem that the operation is not easy because the electronic control can not be performed.
본 발명 트랙터용 무단변속기 제어장치는 이와같은 종래의 결점을 해결하기 위하여 안출한 것으로, 마이크로 프로세서를 사용하여 제어를 용이하게 함을 물론 정밀 자동제어와 연료절감등을 얻을 수 있도록 하는 트랙터용 무단변속기 제어장치를 제공하는데 그 목적이 있다.The continuously variable transmission control device for a tractor of the present invention has been devised to solve such a conventional drawback. The continuously variable transmission for a tractor can be used to easily control using a microprocessor as well as to obtain precise automatic control and fuel saving. Its purpose is to provide a control device.
이와같은 목적을 달성하기 위한 본 발명은 전후진, 최고속 속도조절, 가속조절, 브레이크 조절, 엔진속도, 베리에이터 속도, 출력축 속도등을 감지하는 감지부와, 상기 감지부의 아날로그 신호를 디지탈 신호로 변환시키는 A/D콘버터부와, 상기 A/D콘버터를 통하여 변환된 디지탈 신호를 입력받아 해당되는 제어를 수행하는 마이크로 프로세서와, 상기 마이크로 프로세서의 출력전력을 소정레벨로 증폭시키는 전력증폭부와, 상기 전력증폭부를 통하여 증폭된 신호의 펄스폭을 변환시키는 모듈레이터와, 상기 전력증폭부의 출력단에 접속되어 방향을 제어하는 방향 제어밸브와, 상기 전력증폭부의 출력단에 접속되어 클러치의 모드를 조절하는 클러치 밸브부와, 상기 모듈레이터의 출력단에 접속되어 베리에이터를 조절하는 베리에이터 밸브부와, 상기 전력 증폭부에 접속되어 전후진을 조절하는 전후진 밸브를 포함하여 구성함을 특징으로 한다.The present invention for achieving the above object is a sensing unit for detecting forward and backward, maximum speed control, acceleration control, brake control, engine speed, variator speed, output shaft speed and the like, and the analog signal of the sensing unit as a digital signal An A / D converter for converting, a microprocessor for receiving the digital signal converted through the A / D converter and performing a corresponding control, a power amplifier for amplifying the output power of the microprocessor to a predetermined level; A modulator for converting a pulse width of the signal amplified by the power amplifier, a direction control valve connected to an output end of the power amplifier and controlling a direction, and a clutch valve connected to an output end of the power amplifier and controlling a clutch mode And a variator valve portion connected to an output terminal of the modulator for adjusting a variator, Is connected to the power amplifying unit is characterized in that it comprises a forward-reverse valve for adjusting the forward-reverse.
제1도는 본 발명 트랙터용 무단변속기 제어계통의 블록도.1 is a block diagram of a continuously variable transmission control system for a tractor of the present invention.
제2도는 본 발명에 따른 제어부의 상세 블록회로도.2 is a detailed block circuit diagram of a control unit according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
8 : 감지부 15 : A/D콘버터부8: sensing unit 15: A / D converter
16 : 마이크로 프로세서 17 : 전력증폭부16 microprocessor 17 power amplifier
18 : 모듈레이터 19 : 방향제어밸브18: Modulator 19: Directional control valve
20 : 클러치 밸브부 21 : 베리에이터 밸브부20: clutch valve portion 21: variator valve portion
22 : 전후진 밸브22: forward and backward valve
제1도는 본 발명 트랙터용 무단변속기 제어장치의 계통을 나타낸 도면으로, 운전자(30)에 의해 작동되어 무단변속기를 조작하는 전후진레버(31), 속도제한레버(32), 가속폐달(33), 브레이크 폐달(34)이 구비되는데, 여기서 전후진레버(31)는 전후진과 중립을 정하여 주고, 속도제한 레버(32)는 운전자가 원하는 속도이상에서는 작동되지 않게 하며, 가속폐달(33)은 속도를 가속시키고, 브레이크 폐달(34)은 속도를 감속시킨다.1 is a view showing the system of the continuously variable transmission control device for a tractor according to the present invention, which is operated by the driver 30 to operate the front and rear levers 31, the speed limit lever 32, and the accelerator pedal 33. , Brake pedal 34 is provided, wherein the forward and backward lever 31 is set forward and backward and neutral, the speed limit lever 32 is not operated above the speed desired by the driver, acceleration pedal 33 is the speed And the brake closing 34 slows down the speed.
그리고 상기 전후진레버(31), 속도제한레버(32), 가속폐달(33), 브레이크 폐달(34)의 조작동작을 감지하고, 엔진(35)의 속도를 감지하며, 트랜스미션(37)내부의 무단변속부의 속도를 감지하고, 구동부(40)의 출력속도를 감지하도록 감지부(36)가 구비된다.And it detects the operation of the forward and backward lever 31, the speed limit lever 32, the acceleration pedal 33, the brake pedal 34, senses the speed of the engine 35, the inside of the transmission 37 The sensing unit 36 is provided to sense the speed of the continuously variable transmission unit and to sense the output speed of the driving unit 40.
또한, 상기 감지부(36)의 감지신호를 입력받아 연료의 주입량을 조절하는 엔진(35) 및 트랜스미션(37)을 제어하는 유압기구부(39)를 제어하도록 마이크로 프로세서(38)가 구비되고, 상기 트랜스미션(37)의 출력에 의해 구동부(40)가 구동되도록 구성된 것이다.In addition, the microprocessor 38 is provided to control the hydraulic mechanism unit 39 for controlling the engine 35 and the transmission 37 to adjust the injection amount of the fuel in response to the detection signal of the detection unit 36, The drive unit 40 is configured to be driven by the output of the transmission 37.
제2도는 본 발명 트랙터용 무단변속기 제어장치의 블록도로, 전후진감지센서(1), 최고속도조절감지센서(2), 가속조절감지센서(3), 브레이크 조절감지센서(4), 엔진속도 감지센서(5), 베리에이터 속도 감지센서(6), 출력축 속도 감지센서(7)로 이루어진 감지부(8)와, 상기 각 감지부(8)의 아날로그 신호를 디지탈 신호로 변환시키는 A/D콘버터(9-14)로 된 A/D콘버터(15)와, 상기 A/D콘버터부(15)를 통하여 변환된 디지탈 신호를 입력받아 해당되는 제어를 수행하는 CPU, 램(RAM), 롬(ROM)등으로 이루어진 마이크로 프로세서(16)와, 상기 마이크로 프로세서(16)의 출력전력을 소정레벨로 증폭시켜 밸브를 구동시킬 수 있도록 하는 전력증폭부(17)와, 상기 전력증폭부(17)를 통하여 증폭된 신호의 펄스폭을 가변시켜 출력값을 조절하는 모들레이터(18)와, 상기 전력증폭부(17)의 출력단에 접속되어 방향을 제어하는 방향제어밸브(19)와, 상기 전력증폭부(17)의 출력단에 접속되어 클러치의 모드를 조절하는 제1클러치 밸브내지 제4클러치 밸브로 이루어진 클러치 밸브부(20)와, 상기 모들레이터(18)의 출력단에 접속되어 베리에이터를 조절하는 제1베리에이터 프로포셔날(PROPORTIONAL)밸브, 제2베리에이터 프로포셔날 밸브로 이루어진 베리에이터 밸브부(21)와, 상기 전력증폭부(17)의 출력단에 접속된 전후진 밸브(22)로 구성된 것이다.2 is a block diagram of a continuously variable transmission control device for a tractor according to the present invention, forward and backward detection sensor (1), maximum speed control sensor (2), acceleration control sensor (3), brake control sensor (4), engine speed A detection unit (8) consisting of a detection sensor (5), a variator speed detection sensor (6), an output shaft speed detection sensor (7), and an A / D for converting the analog signal of each detection unit (8) into a digital signal. CPU, RAM, ROM, which receives the A / D converter 15 of the converters 9-14 and the digital signal converted through the A / D converter unit 15 and performs the corresponding control. A microprocessor 16 including a ROM, a power amplifier 17 for amplifying the output power of the microprocessor 16 to a predetermined level to drive a valve, and the power amplifier 17 Modulator 18 for adjusting the output value by varying the pulse width of the signal amplified through the output, and the output of the power amplifier 17 A clutch valve unit 20 comprising a direction control valve 19 connected to a stage to control a direction and a first clutch valve to a fourth clutch valve connected to an output terminal of the power amplifier 17 to control a clutch mode. And a variator valve portion 21 which is connected to an output terminal of the modulator 18 and comprises a first variator proportional valve and a second variator proportional valve for controlling a variator; The forward and backward valves 22 are connected to the output terminal of the power amplifier 17.
이와같이 구성된 본 발명은 먼저, 제1도의 동작을 살펴보면, 운전자(30)가 전후진레버(31), 속도제한레버(32), 가속페달(33), 브레이크 페달(34)등의 작동기구를 사용하여 무단변속기를 조작한다.In the present invention configured as described above, first, referring to the operation of FIG. 1, the driver 30 uses an operating mechanism such as a forward and backward lever 31, a speed limit lever 32, an accelerator pedal 33, a brake pedal 34, and the like. To operate the continuously variable transmission.
이때, 전후진레버(31)는 전후진과 중립을 정하여 주고, 속도제한레버(32)는 운전자가 원하는 속도이상에서는 작동되지 않도록 제한하며, 가속페달(33)과 브레이크 페달(34)은 각각 가속 및 감속을 수행하게 된다.At this time, the forward and backward lever 31 determines forward and backward and neutral, the speed limit lever 32 is limited to not be operated above the speed desired by the driver, the accelerator pedal 33 and the brake pedal 34 respectively accelerate and The deceleration will be performed.
또한, 감지부(36)의 각 센서들은 전후진레버(31), 속도제한레버(32), 가속페달(33), 브레이크 페달(34)의 조작동작을 감지하고, 엔진(35)의 속도를 감지하며, 트랜스미션(37)내부의 무단변속부의 속도를 감지하는 한편, 구동부(40)의 출력속도를 감지한다.In addition, the sensors of the sensing unit 36 detect the operation of the forward and backward lever 31, the speed limit lever 32, the accelerator pedal 33, and the brake pedal 34, and adjust the speed of the engine 35. In addition, while detecting the speed of the continuously variable transmission inside the transmission 37, the output speed of the driving unit 40 is sensed.
이와같이 감지된 값들은 마이크로 프로세서(38)에 입력되어 마이크로 프로세서(38)에서 엔진(35)및 유압기구부(39)를 제어하게 되며, 엔진(35)은 연료의 주입량을 조절하고, 트랜스미션(37)은 구동부(40)에 원하는 출력을 내보낸다.The sensed values are input to the microprocessor 38 to control the engine 35 and the hydraulic mechanism 39 in the microprocessor 38, and the engine 35 adjusts the injection amount of fuel, and the transmission 37. Sends the desired output to the drive 40.
한편, 제2도는 본 발명 트랙터용 제어장치로, 감지부(8)의 각 센서(1-7)에 의해 감지된 값들이 A/D콘버터부(15)의 각 A/D콘버터부(9-14)에 의해 마이크로 프로세서(16)가 처리할 수 있는 디지탈신호로 변환된 후 마이크로 프로세서(16)로 입력된다.On the other hand, Figure 2 is a control device for a tractor of the present invention, the values detected by each sensor (1-7) of the detection unit 8, each of the A / D converter unit 9-of the A / D converter unit 15 14 is converted into a digital signal that can be processed by the microprocessor 16 and input to the microprocessor 16.
따라서, 마이크로 프로세서(16)에서는 해당되는 제어신호를 출력시키고, 이와같이 출력된 제어신호는 전력증폭부(17)를 통해 소정레벨로 전력증폭된 후 방향제어밸브(19), 클러치 밸브부(20), 베리에이터 밸브부(21), 전후진 밸브(22)에 인가되어 각 밸브의 동작을 제어하게 되는데, 이때 모듈레이터(18)를 통하여 펄스폭 변환된 신호가 베리에이터 밸브부(21)로 출력되며, 상기 클러치 밸브부(20)는 총 4가지 모드(클러치 1모드∼ 클러치 4모드)로 이루어진다.Accordingly, the microprocessor 16 outputs a corresponding control signal, and the control signal output in this way is amplified to a predetermined level through the power amplifier 17 and then the direction control valve 19 and the clutch valve unit 20. , And is applied to the variator valve unit 21 and the forward and backward valves 22 to control the operation of each valve. At this time, the pulse width converted signal is output to the variator valve unit 21 through the modulator 18. The clutch valve unit 20 has a total of four modes (clutch 1 mode to clutch 4 mode).
여기서, 가속페달은 포텐션메타 또는 이에 상응하는 센서(예를들어, 인덕션 타입)로 구성되어 있으며, 페달의 작동 각도 및 작동속도를 감지한다.Here, the accelerator pedal is composed of a potentiometer or a corresponding sensor (for example, induction type), and detects the operating angle and the operating speed of the pedal.
그리고 브레이크 페달에도 포텐션메타 또는 이에 상응하는 센서가 장착되어 있으며, 편 브레이크 작동시 무감지하고, 양 브레이크 동시 작동시 페달의 작동각 및 작동 속도를 감지한다.In addition, the brake pedal is equipped with a potentiometer or a corresponding sensor. The brake pedal detects an operating angle and an operating speed of the pedal when both brakes are operated.
또한, 속도제한레버(32)에도 포텐션메타 또는 이에 상응하는 센서를 장착하여 필요한 속도제한을 하도록 할 수 있으며, 전후진 레버(31)에는 3단 스위치로 사용하여 전진, 후진, 중립상태를 감지하도록 하거나 또는 1단 스위치로 전진, 후진을 감지하도록 할 수 있다.In addition, the speed limit lever 32 may be equipped with a potentiometer or a sensor corresponding thereto to perform the required speed limit, and the forward and backward lever 31 may be used as a three-stage switch to detect forward, backward and neutral states. The 1st switch can be used to detect forward and backward movements.
즉, 본 발명에서는 전원이 공급되면 시스템 전체가 초기화되며 대기상태가 된다.That is, in the present invention, when the power is supplied, the whole system is initialized and in a standby state.
그리고 발생되는 신호가 어떤 신호인지를 감지하여 마이크로 프로세서에 전달되며, 원하는 동작에 필요한 밸브를 마이크로 프로세서에서 제어하고, 사용자가 원하는 최고속도에 맞추어서 무단변속기를 사용가능하게 되는 것이다.Then, the signal generated is sensed and transmitted to the microprocessor, the microprocessor controls the valve required for the desired operation, and the CVT can be used at the maximum speed desired by the user.
본 발명 트랙터용 무단변속기 제어장치에 의하면, 마이크로 프로세서를 사용하여 무단변속기를 제어함으로써 안정성을 확보할 수 있음은 물론 트랜스미션을 효율적으로 제어할 수 있는 효과가 있다.According to the continuously variable transmission control apparatus for a tractor of the present invention, by controlling the continuously variable transmission using a microprocessor, the stability can be secured and the transmission can be efficiently controlled.
또한, 최적부하상태의 작업설정을 할 수 있을뿐 만 아니라 저소음, 연료절감등의 효과를 얻을 수 있으며, 기기의 작동을 용이하게 할 수 있는 효과도 있다.In addition, it is possible not only to set the work of the optimum load state, but also to obtain the effect of low noise, fuel saving, etc., and to facilitate the operation of the device.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960032156A KR0185071B1 (en) | 1996-08-01 | 1996-08-01 | Control apparatus of non-stage transmission for a tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960032156A KR0185071B1 (en) | 1996-08-01 | 1996-08-01 | Control apparatus of non-stage transmission for a tractor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19980013605A KR19980013605A (en) | 1998-05-15 |
| KR0185071B1 true KR0185071B1 (en) | 1999-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019960032156A KR0185071B1 (en) | 1996-08-01 | 1996-08-01 | Control apparatus of non-stage transmission for a tractor |
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| Country | Link |
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| KR (1) | KR0185071B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6160243A (en) * | 1998-09-25 | 2000-12-12 | Redwood Microsystems, Inc. | Apparatus and method for controlling fluid in a micromachined boiler |
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1996
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| KR19980013605A (en) | 1998-05-15 |
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