KR20040095475A - Protecting device of power train system in commercial vehicle and protecting method thereof - Google Patents
Protecting device of power train system in commercial vehicle and protecting method thereof Download PDFInfo
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Abstract
본 발명은 상용차량의 동력전달계 보호장치 및 보호방법에 관한 것으로, 구동계로 전달되는 토크를 지속적으로 감지해 경사진 도로나 험로를 주행할 때 급격한 토크의 증가 한도를 제한시켜 토크쇼크를 방지해 구동을 전담하는 축과 액슬부위의 내구성을 저하시키지 않도록 함에 그 목적이 있다.The present invention relates to a power transmission system protection device and a method for protecting a commercial vehicle, by continuously detecting the torque transmitted to the drive system and limiting the sudden increase in torque when driving on inclined roads or rough roads to prevent torque shocks. The purpose is to not reduce the durability of the shaft and axle portion dedicated to the shaft.
상기와 같은 목적을 달성하기 위한 본 발명은, 엔진의 동력을 전달받는 변속기(1)와 차륜으로 구동력을 전달하는 액슬(3) 및 이 들 사이를 연결하는 구동축(2)으로 이루어진 동력전달계와, 이 동력전달계의 구동축(2)으로 전달되는 토크를 측정하는 제2조건측정수단(10), 차량 상태와 도로 조건등을 측정하는 제1조건측정수단(20) 및 이 측정수단(10,20)으로부터 입력된 데이터를 이용해 스로틀밸브의 개도량을 제어하여 엔진의 출력 토크에 대한 상한선을 적용하는 ECU(30)로 이루어지고 이에 따라 상기 ECU(30)가 구동축(2)의 토크와 차량 조건에 대한 데이터를 입력받아 기 설정된 조건의 만족여부에 따라 엔진 토크를 정상적인 상태로 유지시키거나 또는 최대 토크 값의 50% 저하 상태 유지 여부를 판단하는 것을 특징으로 한다.The present invention for achieving the above object, the power transmission system consisting of a transmission (1) receiving the power of the engine and the axle (3) for transmitting the driving force to the wheel and the drive shaft (2) connecting between them, Second condition measuring means (10) for measuring torque transmitted to the drive shaft (2) of the power transmission system, first condition measuring means (20) for measuring vehicle conditions and road conditions, and the measuring means (10,20) ECU 30 is configured to apply an upper limit to the output torque of the engine by controlling the opening amount of the throttle valve using data inputted from the controller. Accordingly, the ECU 30 is configured to control the torque of the drive shaft 2 and the vehicle condition. It is characterized by determining whether to maintain the engine torque in a normal state or maintain 50% of the maximum torque value according to whether the preset condition is satisfied by receiving data.
Description
본 발명은 상용차량의 동력전달계에 관한 것으로, 보다 상세하게는 차량의 출발 조건에 따라 구동축으로 전달되는 토크를 제어해 구동축에 가해지는 토크 쇼크를 방지할 수 있도록 된 상용차량의 동력전달계 보호장치 및 보호방법에 관한 것이다.The present invention relates to a power transmission system of a commercial vehicle, and more particularly, a power transmission system protection device of a commercial vehicle which is capable of preventing torque shock applied to the driving shaft by controlling the torque transmitted to the driving shaft according to the starting condition of the vehicle. It is about a protection method.
일반적으로 상용차는 후륜 구동 방식이며 변속기와 리어액슬 사이에 프로펠러 샤프트로 동력을 전달함으로써 주행되는데, 이와 같이 종력을 전달하는 동력 전달계인 파워트레인시스템(Power train system)은 통상적으로 엔진의 동력을 전달받는 변속기와, 뒷바퀴에 연결되는 리어액슬 및 변속기의 동력을 리어액슬로 전달하는 구동축으로 구성되어진다.In general, commercial vehicles are driven by rear wheels and are driven by transmitting power to a propeller shaft between a transmission and a rear axle. In this way, a power train system, which is a power transmission system that transmits a longitudinal force, is typically powered by an engine. It consists of a transmission, a rear axle connected to the rear wheel, and a drive shaft for transmitting the power of the transmission to the rear axle.
이에 따라, 엔진에서 전달되는 동력은 변속기로 전달되고, 변속기는 구동축을 통해 리어액슬로 동력을 전달해 리어액슬에 부착된 뒷바퀴가 회전함으로써 자동차가 운행되는데 이때, 변속기의 기어의 위치가 어느 위치인가에 따라서 전달되는 동력의 크기 및 방향이 달라짐은 물론이다.Accordingly, the power transmitted from the engine is transmitted to the transmission, and the transmission transmits power to the rear axle through the drive shaft, and the vehicle is driven by the rotation of the rear wheel attached to the rear axle, where the gear position of the transmission is located. Therefore, the magnitude and direction of the transmitted power is of course changed.
현재 사용되고 있는 이와 같은 상용차 중 두 축을 갖는 후륜으로 이루어진 대형 트럭의 경우에는 상기 두 축 중 1축에만 동력을 전달하고 나머지 한 축은 구동력을 전달하지 않는 태그 액슬(Tag Axle)로만 기능하게 되고, 이에 따라 구동력을 전담하는 축의 경우에는 동력전달에 따른 강한 내구성을 갖는 것이 반드시 요구되고 있는 실정이다.In the case of a large truck consisting of rear wheels having two axles of such commercial vehicles currently in use, only one of the two axles serves as a tag axle that transmits power only to one of the two axles and thus does not transmit driving force. In the case of the axis dedicated to the driving force, it is required to have a strong durability according to the power transmission.
그러나, 현재 사용되고 있는 차량의 경우 보다 많은 화물을 적재하기 위해 적절히 설계된 적재함을 보다 많은 화물 적재 용량을 갖도록 개조해 구동력을 전담하는 축에 대한 하중 증가를 가중시키게 되고, 이로 인해 경사진 도로나 험로를 주행하는 경우에는 포장된 도로를 주행할 때 보다 구동력을 전담하는 축에 비정상적인 토크쇼크(Torque Shock)가 가해져 내구성을 크게 저하시킴은 물론 심할 경우 구동축과 액슬의 기어부위가 파손되는 문제가 있게 된다.However, in the case of vehicles currently in use, an appropriately designed loading box for loading more cargo has been modified to have more cargo loading capacity, thereby increasing the load on the axis dedicated to driving force, thereby making it possible to In the case of driving, abnormal torque shock is applied to the shaft dedicated to the driving force than when driving on a paved road, which greatly reduces durability, and in the case of severe driving, the gear parts of the driving shaft and the axle are damaged.
이에 본 발명은 상기와 같은 점을 감안하여 발명된 것으로, 구동계로 전달되는 토크를 지속적으로 감지해 경사진 도로나 험로를 주행할 때 급격한 토크의 증가 한도를 제한시켜 토크쇼크를 방지해 구동을 전담하는 축과 액슬부위의 내구성을 저하시키지 않도록 함에 그 목적이 있다.Therefore, the present invention has been invented in view of the above-mentioned, and it continuously detects the torque transmitted to the drive system and limits the sudden increase in torque when driving on a sloped road or a rough road to prevent torque shock and dedicate driving. The purpose is to not reduce the durability of the shaft and the axle.
상기와 같은 목적을 달성하기 위한 본 발명은, 엔진의 동력을 전달받는 변속기와 차륜으로 구동력을 전달하는 액슬 및 이 들 사이를 연결하는 구동축으로 이루어진 동력전달계와, 이 동력전달계의 구동축으로 전달되는 토크를 측정하는 제2조건측정수단, 차량 상태와 도로 조건등을 측정하는 제1조건측정수단 및 이 측정수단으로부터 입력된 데이터를 이용해 스로틀밸브의 개도량을 제어하여 엔진의 출력 토크에 대한 상한선을 적용하는 ECU로 이루어진 것을 특징으로 한다.The present invention for achieving the above object, the power transmission system consisting of a transmission that receives the power of the engine and the axle for transmitting the driving force to the wheel and a drive shaft connecting them, and the torque transmitted to the drive shaft of the power transmission system The second condition measuring means for measuring the, the first condition measuring means for measuring the vehicle condition and road conditions, etc. and the upper limit to the output torque of the engine is applied by controlling the opening amount of the throttle valve using the data input from the measuring means. Characterized in that consisting of the ECU.
또한, 본 발명은 ECU가 구동축의 토크와 차량 조건에 대한 데이터를 입력받아 기 설정된 조건에 만족됨을 확인한 후 검출된 구동축 계측 토크 값이 특정 조건보다 큰 값을 갖는지 여부를 판단한 후, 이어 검출된 구동축 계측 토크 값이 특정 조건(엔진최대토크 x 기어비 x 1.2(안전율))보다 큰 값을 갖는다고 판단할 때 엔진토크를 최대 토크 값의 50% 정도로 급격히 저하시키도록 스로틀밸브의 개도량을 제어하는 한편, 상기 ECU가 기 설정된 조건이 만족됨을 재확인 해 엔진 토크의 정상회복이나 최대 토크 값의 50% 저하 상태 유지 여부를 판단하는 것을 특징으로 한다.In addition, the present invention after the ECU receives the data of the drive shaft torque and the vehicle condition and confirms that the predetermined condition is satisfied, and after determining whether the detected drive shaft measurement torque value has a value larger than a specific condition, and then detected drive shaft When the measured torque value is determined to have a value greater than a specific condition (engine maximum torque x gear ratio x 1.2 (safety factor)), the opening amount of the throttle valve is controlled so as to drastically reduce the engine torque to about 50% of the maximum torque value. The ECU may reconfirm that the preset condition is satisfied to determine whether to normalize the engine torque or maintain the 50% lowered maximum torque value.
도 1은 본 발명에 따른 상용차량의 동력전달계 보호장치의 구성도1 is a block diagram of a power transmission system protection device of a commercial vehicle according to the present invention
도 2는 본 발명에 따른 상용차량의 동력전달계 보호방법에 대한 순서도2 is a flow chart for a power transmission system protection method of a commercial vehicle according to the present invention.
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
1 : 변속기 2 : 구동축1 transmission 2 drive shaft
3 : 액슬 10 : 제2조건측정수단3: axle 10: second condition measuring means
11 : 배터리 12 : 오실레이터11: battery 12: oscillator
13 : 와이어밴드 14 : 검출기13: wire band 14: detector
20 : 제1조건측정수단 15a,15b,15c : 센서20: first condition measuring means 15a, 15b, 15c: sensor
30 : ECU30: ECU
이하 본 발명의 실시예를 첨부된 예시도면을 참조로 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 발명에 따른 상용차량의 동력전달계 보호장치의 구성도를 도시한 것인바, 본 발명은 동력을 발생하는 엔진으로부터 동력을 전달받는 변속기(1)와 차륜으로 구동력을 전달하는 액슬(3)사이를 연결하는 구동축(2)으로 이루어진 동력전달계에 구동축(2)의 토크를 감지해 엔진으로부터 발생되는 토크를 적절히 제어하는 보호장치가 구비되되, 이 보호장치는 구동축으로 전달되는 토크를 측정하는 제2조건측정수단(10)과, 차량 상태와 도로 조건등을 측정하는 제1조건측정수단(20) 및 이 측정수단(10,20)으로부터 입력된 데이터를 이용해 스로틀밸브의 개도량을 제어하여 엔진의 출력 토크에 대한 상한선을 적용하는 ECU(30)로 이루어진다.1 is a block diagram of a power transmission system protection device for a commercial vehicle according to the present invention, the present invention is a transmission (1) and the axle (3) for transmitting the driving force to the wheel receives power from the engine for generating power. The power transmission system consisting of drive shafts (2) connected between the two is provided with a protection device for sensing the torque of the drive shaft (2) to properly control the torque generated from the engine, which measures the torque transmitted to the drive shaft The opening condition of the throttle valve is controlled by using the second condition measuring means 10, the first condition measuring means 20 for measuring the vehicle condition and the road condition, and the data inputted from the measuring means 10 and 20. It consists of an ECU 30 which applies an upper limit to the output torque of the engine.
여기서, 상기 제2조건측정수단(10)은 구동축(2)에 고정되어 배터리(11)로부터 동력을 얻는 오실레이터(12)와, 이 오실레이터(12)로부터 전원을 공급받으면서 구동축(2)의 토크 변화에 따라 자기장을 변화시키도록 구동축(2)에 권취된 와이어밴드(13) 및 이 와이어밴드(13)에서 발생된 자기장 변화를 검출해 ECU(30)로 전송하는 검출기(14)로 이루어진다.Here, the second condition measuring means 10 is fixed to the drive shaft 2, the oscillator 12 is powered from the battery 11, and the torque change of the drive shaft 2 while receiving power from the oscillator 12 And a detector 14 which detects the change in the magnetic field generated in the wire band 13 and transmits it to the ECU 30 so as to change the magnetic field.
이때, 상기 와이어밴드(13)는 얇은 스틸(강)로 이루어져도 가능함은 물론이다.At this time, the wire band 13 may be made of a thin steel (steel) of course.
그리고, 상기 검출기(14)는 구동축(2)에 권취된 와이어밴드(13)로부터 약 5mm의 갭(G)을 유지하도록 차체 프레임(도시되어 있지 않음)등을 통해 장착됨은 물론이다.In addition, the detector 14 is mounted through a body frame (not shown) or the like so as to maintain a gap G of about 5 mm from the wire band 13 wound on the drive shaft 2.
또한, 상기 제1조건측정수단(20)은 차량의 적재된 화물에 따른 중량을 검출하는 로드센서와 같은 중량검출센서(20a)와, 경사진 노면에 위치된 차량의 상태를 검출하는 중력센서와 같은 노면경사센서(20b) 및 변속기의 변속단수를 검출하기 위한 포지션센서와 같은 기어위치측정센서(20c)로 이루어진다.In addition, the first condition measuring means 20 includes a weight detection sensor 20a such as a load sensor for detecting the weight according to the loaded cargo of the vehicle, a gravity sensor for detecting the state of the vehicle located on the inclined road surface; A gear position measuring sensor 20c such as a position road sensor 20b and a position sensor for detecting a gear shift stage of the transmission are included.
이하 본 발명의 작동을 첨부된 도면을 참조로 상세히 설명한다.Hereinafter, the operation of the present invention will be described in detail with reference to the accompanying drawings.
본 발명은 도 2에 도시된 바와 같이 ECU(30)가 제1조건측정수단(20)을 통해 차량의 적재된 화물에 따른 중량과 차량의 경사 정도 및 변속기의 변속단에 대한 데이터와 제2조건측정수단(10)을 통해 구동축(2)으로 전달된 토크에 대한 데이터를 입력받은 상태에서 상기 제1조건측정수단(20)의 모든 요소(적재중량 값과 노면경사 값 및 기어위치 값)을 만족하는지 여부를 판단하게된다.As shown in FIG. 2, the ECU 30 uses the first condition measuring means 20 to calculate the weight according to the loaded cargo of the vehicle, the degree of inclination of the vehicle, and the data and the second condition of the gear shift stage of the transmission. Satisfies all elements (load weight value, road slope value and gear position value) of the first condition measuring means 20 in the state of receiving data on the torque transmitted to the drive shaft 2 through the measuring means 10. Will determine whether or not.
이어, 상기 제1조건측정수단(20)의 모든 요소가 만족됨을 확인한 ECU(30)는 제2조건측정수단(10)을 통해 검출된 구동축 계측 토크 값이 특정 조건(엔진최대토크 x 기어비 x 1.2(안전율))보다 큰 값을 갖는지 여부를 판단하게 된다.Subsequently, the ECU 30 confirms that all the elements of the first condition measuring means 20 are satisfied, and thus the drive shaft measurement torque value detected through the second condition measuring means 10 has a specific condition (engine maximum torque x gear ratio x 1.2). It is determined whether or not it has a value greater than (safety factor).
이때, 상기 제2조건측정수단(10)을 통한 구동축 계측 토크 값은 도 1에 도시된 바와 같이, 구동축(2)에 장착된 오실레이터(12)로부터 전원을 공급받아 전기가 흐르는 도전상태를 유지하는 와이어밴드(13)가 구동축(2)과 함께 회전될 때 구동축의 토크변화에 따른 회전수 변화에 따라 발생되는 전기장이 변화되고 이에 따라, 상기 와이어밴드(13)의 변화된 전기장 값이 검출기(14)를 통해 감지되어 ECU(30)로 전송되어진다.At this time, the drive shaft measurement torque value through the second condition measuring means 10 is supplied with power from the oscillator 12 mounted on the drive shaft 2, as shown in FIG. When the wire band 13 is rotated together with the drive shaft 2, the electric field generated by the change in the rotational speed according to the torque change of the drive shaft is changed, and thus, the changed electric field value of the wire band 13 is detected by the detector 14. It is detected through and transmitted to the ECU (30).
이후, 검출된 구동축 계측 토크 값이 특정 조건(엔진최대토크 x 기어비 x 1.2(안전율))보다 큰 값을 갖는다고 판단한 ECU(30)는 엔진토크를 최대 토크 값의 50% 정도로 급격히 저하시키도록 스로틀밸브의 개도량을 제어하게 된다.Subsequently, the ECU 30 determining that the detected drive shaft measured torque value has a value larger than a specific condition (engine maximum torque x gear ratio x 1.2 (safety factor)) causes the throttle to rapidly reduce the engine torque to about 50% of the maximum torque value. The opening amount of the valve is controlled.
이어, 상기 ECU(30)는 다시 제1조건측정수단(20)의 모든 요소(적재중량 값과 노면경사 값 및 기어위치 값)의 만족시 급격히 저하된 최대 토크 값의 50% 엔진토크를 유지하는 한편, 만약 상기 제1조건측정수단(20)의 모든 요소(적재중량 값과 노면경사 값 및 기어위치 값)가 만족되지 못하는 경우에는 정상적인 엔진 토크를 출력하도록 스로틀밸브를 제어하면서 상기 제1·2조건측정수단(20,10)을 지속적으로 모니터링(Monitoring)하게 된다.Subsequently, the ECU 30 maintains the engine torque of 50% of the maximum torque value sharply lowered when all the elements (loading weight value, road slope value and gear position value) of the first condition measuring means 20 are satisfied again. On the other hand, if all elements (loading weight value, road slope value and gear position value) of the first condition measuring means 20 are not satisfied, the throttle valve is controlled so as to output normal engine torque. The condition measuring means 20, 10 are continuously monitored.
이상 설명한 바와 같이 본 발명에 의하면, ECU가 구동계로 전달되는 토크를 지속적으로 감지하면서 차량의 조건에 따라 엔진의 출력 토크를 제한시키게 되어, 경사진 도로나 험로를 주행시 큰 토크를 전달받는 동력전달계의 구동력 전담 축에 가해지는 비정상적인 토크쇼크(Torque Shock)를 차단시켜 내구성 저하를 방지하면서 구동축과 액슬의 기어부위가 파손을 야기하지 않는 효과가 있게 된다.As described above, according to the present invention, while the ECU continuously detects the torque transmitted to the drive system, the output torque of the engine is limited according to the condition of the vehicle, and the power transmission system receives a large torque when driving on a sloped road or a rough road. It blocks the abnormal torque shock applied to the driving force dedicated shaft to prevent durability degradation and the gear parts of the driving shaft and the axle do not cause damage.
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| KR1020030029342A KR20040095475A (en) | 2003-05-09 | 2003-05-09 | Protecting device of power train system in commercial vehicle and protecting method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089912A (en) * | 2013-01-17 | 2013-05-08 | 万向钱潮传动轴有限公司 | Novel transmission shaft with autonomous exciter |
| KR101360166B1 (en) * | 2012-06-27 | 2014-02-12 | 타타대우상용차 주식회사 | Torque control system and method of diesel engine for commercial vehicle |
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2003
- 2003-05-09 KR KR1020030029342A patent/KR20040095475A/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101360166B1 (en) * | 2012-06-27 | 2014-02-12 | 타타대우상용차 주식회사 | Torque control system and method of diesel engine for commercial vehicle |
| CN103089912A (en) * | 2013-01-17 | 2013-05-08 | 万向钱潮传动轴有限公司 | Novel transmission shaft with autonomous exciter |
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