KR20020052353A - Limited Slip Differential for automobile using break system and method for controling the same - Google Patents
Limited Slip Differential for automobile using break system and method for controling the same Download PDFInfo
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- KR20020052353A KR20020052353A KR1020000081593A KR20000081593A KR20020052353A KR 20020052353 A KR20020052353 A KR 20020052353A KR 1020000081593 A KR1020000081593 A KR 1020000081593A KR 20000081593 A KR20000081593 A KR 20000081593A KR 20020052353 A KR20020052353 A KR 20020052353A
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000000670 limiting effect Effects 0.000 claims abstract description 21
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/30—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means
- F16H48/34—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means using electromagnetic or electric actuators
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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
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/26—Arrangements for suppressing or influencing the differential action, e.g. locking devices using fluid action, e.g. viscous clutches
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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
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H2048/204—Control of arrangements for suppressing differential actions
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Retarders (AREA)
Abstract
본 발명은 자동차의 브레이크 시스템을 이용하여 차동제한효과를 얻을 수 있도록 한 차량용 차동제한장치 및 그의 제어방법에 관한 것으로, 본 발명의 차동제한장치는, 마스터실린더에서 발생한 브레이크 유압을 각 구동휠로 전달하는 유압공급라인 상에 설치되어, 전자제어유닛(ECU)의 제어에 따라 각 구동휠의 브레이크로 공급되는 유압을 선택적으로 단락시키도록 된 유압제어부와; 상기 전자제어유닛에 연결되도록 운전석 일측에 설치되어 상기 유압제어부를 작동시키는 차동제한스위치를 포함하여 구성된다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle differential limiting device and a control method thereof in which a differential limiting effect can be obtained using a brake system of an automobile. The differential limiting device of the present invention transmits brake hydraulic pressure generated in a master cylinder to each driving wheel. A hydraulic control unit installed on the hydraulic pressure supply line to selectively short-circuit the hydraulic pressure supplied to the brake of each driving wheel according to the control of the electronic control unit ECU; It is configured to include a differential limit switch installed on one side of the driver's seat so as to be connected to the electronic control unit to operate the hydraulic control unit.
따라서, 상기 차동제한스위치를 온시키면 전자제어유닛에서 공전하는 구동휠을 감지하여, 상기 공전하는 구동휠을 제외한 나머지 구동휠의 브레이크에 공급되는 브레이크 유압을 단락시키고, 이로써 운전자가 브레이크 페달을 밟으면 공전하는 구동휠만 제동하고 나머지는 제동이 되지 않도록 하여 차동제한을 달성할 수 있게 되는 것이다.Accordingly, when the differential limit switch is turned on, the electronic drive unit detects a driving wheel that idles, and shorts the brake hydraulic pressure supplied to the brakes of the driving wheels other than the idle driving wheels. It is possible to achieve a differential limit by braking only the driving wheels and preventing the rest.
Description
본 발명은 자동차의 차동제한장치 및 그의 제어방법에 관한 것으로, 특히 자동차의 브레이크 시스템을 이용하여 차동제한효과를 얻을 수 있도록 한 브레이크 시스템을 이용한 차량용 차동제한장치 및 그의 제어방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a differential limiting apparatus for a vehicle and a control method thereof, and more particularly, to a differential limiting apparatus for a vehicle using a brake system and a method for controlling the same, which achieve a differential limiting effect using a brake system of a vehicle.
일반적으로, 자동차에는 선회시 외측 구동휠의 회전수가 내측 구동휠의 회전수보다 많게 하고, 요철 노면을 주행할 경우에도 좌우 구동휠의 회전수가 변화하지 않도록 하기 위하여, 변속기에서 변화된 회전력을 구동휠 쪽으로 전달하는 역할과 두 바퀴의 서로 다른 회전수를 분배하는 차동기어가 설치되어, 이 차동기어에 의해 차량이 부드러운 선회주행을 할 수 있게 된다.In general, in the automobile, the rotational speed of the outer driving wheel is greater than the rotational speed of the inner driving wheel, and the rotational force of the left and right driving wheels does not change even when traveling on uneven roads. Differential gears are provided for the transmission and for distributing the different speeds of the two wheels, allowing the vehicle to drive smoothly.
한편, 이와 같은 차동기어는 좌우 구동휠에 가해지는 부하의 차이를 이용하여 각 구동휠 간에 부하에 반비례하는 회전수의 차이를 유도하는 것이기 때문에, 한 쪽 구동휠이 미끄러운 웅덩이 등에 빠져 무부하 상태에서 헛돌게 되면 반대쪽 구동휠이 회전하지 않게 되므로 차량이 움직이지 못하게 된다.On the other hand, such a differential gear is to induce a difference in the number of rotations inversely proportional to the load between the driving wheels by using the difference in the load applied to the left and right drive wheels, so that one drive wheel falls into a slippery pool, etc. If you turn it, the driving wheel on the other side will not turn and the vehicle will not move.
따라서, 이와 같이 슬립이 발생하여 한 쪽 바퀴가 공전시 자동적으로 그 공전을 방지함과 동시에 대부분의 구동력을 차량이 이동할 수 있도록 구동휠에 전달하도록 구동력을 배가시키는 차동제한장치(L.S.D : Limited Slip Differential)가 사용되고 있다.Thus, a slip is generated so that one wheel automatically prevents the idle when idle, and at the same time, the differential limiting device that doubles the driving force to transmit most of the driving force to the driving wheel for the vehicle to move (LSD: Limited Slip Differential ) Is used.
그러나, 상기와 같은 종래의 차동제한장치들은 도 1에 도시된 바와 같이, 차축(1)과 결합된 차동장치에 별도의 구동기어(2), 구동피니언(3), 클러치판(4) 등을 결합시켜 복잡한 시스템을 구성하게 되는바, 제작이 어렵고 부품수도 많아 비용도 많이 소요되어 가격이 상승되는 문제점이 있었다.However, the conventional differential limiting devices as described above, as shown in Figure 1, a separate drive gear (2), drive pinion (3), clutch plate (4), etc. to the differential device coupled to the axle (1) Combining a complex system is a bar, the production is difficult and the number of parts is a lot of cost, there was a problem that the price increases.
이에 본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 차동장치에 복잡한 차동제한시스템을 구성하지 않고, 자동차의 브레이크 시스템을 이용하여 간단한 구조로 차동제한 효과를 이룰 수 있도록 한 브레이크 시스템을 이용한 차량용 차동제한장치 및 그의 제어방법을 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above problems, and does not form a complex differential limiting system in a differential device, but uses a brake system that can achieve a differential limiting effect with a simple structure using a brake system of an automobile. It is an object of the present invention to provide a vehicle differential limiting device and a control method thereof.
도 1은 일반적인 차동제한장치(L.S.D)가 장착된 차동장치의 구성을 나타낸 요부 종단면도Figure 1 is a longitudinal cross-sectional view showing the configuration of a differential device equipped with a conventional differential limiting device (L.S.D)
도 2는 본 발명에 따른 차동제한장치 구성을 나타낸 구성도2 is a block diagram showing a configuration of a differential limiting device according to the present invention;
도 3은 도 2의 차동제한장치의 제어방법을 나타낸 플로우챠트3 is a flowchart illustrating a control method of the differential limiting apparatus of FIG.
*도면의 주요부분의 참조부호에 대한 설명** Description of reference numerals in the main parts of the drawings *
C - 유압제어부 F1, F2, R1, R2 - 구동휠C-Hydraulic control part F1, F2, R1, R2-Drive wheel
M - 마스터실린더 L - 주공급라인M-Master Cylinder L-Main Supply Line
L1, L2, L3, L4 - 제 1,2,3,4 유압공급라인L1, L2, L3, L4-1,2,3,4 Hydraulic Supply Line
S - 차동제한스위치S-Differential Limit Switch
상기와 같은 목적을 달성하기 위한 본 발명의 한 관점에 따르면, 마스터실린더에서 발생한 브레이크 유압을 각 구동휠로 전달하는 유압공급라인 상에 설치되어, 전자제어유닛(ECU)의 제어에 따라 각 구동휠의 브레이크로 공급되는 유압을 선택적으로 단락시키도록 된 유압제어부와; 상기 전자제어유닛에 연결되도록 운전석 일측에 설치되어 상기 유압제어부를 작동시키는 차동제한스위치를 포함하여 구성된, 브레이크 시스템을 이용한 차동제한장치를 제공한다.According to an aspect of the present invention for achieving the above object, it is installed on the hydraulic supply line for transmitting the brake hydraulic pressure generated in the master cylinder to each drive wheel, each drive wheel under the control of the electronic control unit (ECU) A hydraulic control unit configured to selectively short-circuit hydraulic pressure supplied to the brake of the engine; It is provided on one side of the driver's seat to be connected to the electronic control unit, including a differential limit switch for operating the hydraulic control unit, provides a differential limiting apparatus using a brake system.
그리고, 본 발명의 다른 관점에 따르면, 차동제한스위치를 온시키면 전자제어유닛에서 공전하는 구동휠을 감지하여, 상기 공전하는 구동휠을 제외한 나머지 구동휠의 브레이크에 공급되는 브레이크 유압을 단락시키고, 이로써 운전자가 브레이크 페달을 밟으면 공전하는 구동휠만 제동하고 나머지는 제동이 되지 않도록 하여 차동제한을 달성하도록 한, 제 1항에 따른 차동제한장치의 제어방법이 제공된다.According to another aspect of the present invention, when the differential limit switch is turned on, the electronic control unit detects the driving wheels revolving, and shorts the brake hydraulic pressure supplied to the brakes of the remaining driving wheels except for the revolving driving wheels. When the driver presses the brake pedal, a control method of the differential limiting device according to claim 1 is provided, which achieves a differential limit by braking only a driving wheel that idles and does not brake the rest.
이하, 본 발명에 따른 실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 2에 도시된 바와 같이, 브레이크 유압을 발생시키는 마스터실린더(M)에 연결되어 유압을 전달하는 주공급라인(L)에 각 구동휠(F1, F2, R1, R2)로 전달되는 유압을 선택적으로 단락시키며 제어하기 위한 유압제어부(C)가 설치되고, 이 유압제어부(C)에는 각 구동휠(F1, F2, R1, R2)의 브레이크 어셈블리(미도시)로 유압을 공급하는 제 1,2,3,4유압공급라인(L1, L2, L3, L4)이 연결된다.As shown in FIG. 2, the hydraulic pressure transmitted to each of the driving wheels F1, F2, R1, and R2 is selectively connected to the main supply line L that is connected to the master cylinder M that generates the brake hydraulic pressure. The hydraulic control unit C is provided for short-circuit control and the hydraulic control unit C is provided with hydraulic pressure control unit C for supplying hydraulic pressure to brake assemblies (not shown) of the respective driving wheels F1, F2, R1, and R2. , 3,4 hydraulic supply lines (L1, L2, L3, L4) are connected.
따라서, 브레이크 시스템의 마스터실린더(M)에서 발생한 유압은 상기 유압제어부(C)를 거친후, 다시 제 1,2,3,4유압공급라인(L1, L2, L3, L4)으로 분배되어 각 구동휠(F1, F2, R1, R2)의 브레이크 어셈블리에 공급된다.Therefore, the hydraulic pressure generated in the master cylinder M of the brake system passes through the hydraulic control unit C, and is further distributed to the first, second, third and fourth hydraulic supply lines L1, L2, L3, and L4 to drive each. It is supplied to the brake assemblies of the wheels F1, F2, R1, R2.
한편, 상기 유압제어부(C)는 자동차의 전자제어유닛(ECU)에 연결되어 전자제어유닛(ECU)의 제어신호에 의해 각 유압공급라인(L1, L2, L3, L4)을 선택적으로 단락시키게 된다.On the other hand, the hydraulic control unit (C) is connected to the electronic control unit (ECU) of the vehicle to selectively short the respective hydraulic supply lines (L1, L2, L3, L4) by the control signal of the electronic control unit (ECU). .
그리고, 운전석이 일측에는 운전자의 조작에 의해 상기 유압제어부(C)를 작동시킬 수 있도록 상기 전자제어유닛(ECU)에 연결되는 차동제한스위치(S)가 설치된다.In addition, a differential limit switch S connected to the electronic control unit ECU is installed at one side of the driver's seat to operate the hydraulic control unit C by a driver's operation.
상기와 같이 구성된 차동제한장치의 제어방법을 도 3을 참조하여 설명하면 다음과 같다. 이해를 돕기 위해 우측 후륜, 즉 제 4구동휠(R2)이 수렁에 빠진 것을 예로 들어 설명한다.The control method of the differential limiting device configured as described above will be described with reference to FIG. 3. For the sake of clarity, the right rear wheel, that is, the fourth driving wheel R2 is in a bog, will be described as an example.
먼저, 자동차의 제 4구동휠(R2)이 수렁에 빠지면 운전자가 가속페달을 밟아도 이 제 4구동휠(R2)은 공전하며 무부하상태로 된다.First, when the fourth driving wheel R2 of the vehicle falls into a bog, even if the driver steps on the accelerator pedal, the fourth driving wheel R2 is idle and is in a no-load state.
이 때, 운전자가 상기 차동제한스위치(S)를 온(on)시키면(단계 S1), 전자제어유닛(ECU)에서는 이에 의해 공전하는 제 4구동휠(R2)을 감지하여 유압제어부(C)에 제어신호를 전달하게 되고(S2), 이어서 유압제어부(C)에서는 제 4구동휠(R2)의 브레이크로 전달되는 제 4유압공급라인(L4)을 제외한 나머지 제 1,2,3유압공급라인(L1, L2, L3)을 단락시켜 유압공급을 중지시킨다(S3).At this time, when the driver turns on the differential limit switch S (step S1), the electronic control unit ECU detects the fourth driving wheel R2 that revolves thereby, and the hydraulic control unit C The control signal is transmitted (S2), and then the first, second, and third hydraulic supply lines except for the fourth hydraulic supply line (L4) transmitted to the brake of the fourth driving wheel (R2) in the hydraulic control unit (C). Shorting the L1, L2, L3) to stop the hydraulic supply (S3).
이러한 상태에서, 운전자는 브레이크 페달(미도시)을 살짝 밟으면서 가속페달(미도시)을 밟으면, 제 4구동휠(R2)만 제동된 상태에서 제 1,2,3구동휠(F1, F2, R1)이 회전하게 되므로 차동제한이 이루어지면서 차량이 수렁에서 빠져나올 수 있게 된다.(S4)In this state, when the driver presses the accelerator pedal (not shown) while slightly pressing the brake pedal (not shown), the first, second and third driving wheels F1, F2, and the fourth driving wheel R2 are braked. Since R1) rotates, the vehicle is able to exit the quack while the differential limit is made. (S4)
상기와 같이 차량이 탈출후, 운전자가 차동제한스위치(S)를 오프(off)시키면(S5), 다시 유로제어부(C)에서는 제 1,2,3유압공급라인(L1, L2, L3)의 단락을 해제하여 전체 구동휠(F1, F2, R1, R2)에 유압을 공급하게 되고(S6), 자동차는 초기의 정상상태로 복귀하게 되는 것이다.After the vehicle escapes as described above, when the driver turns off the differential limit switch S (S5), the flow path controller C again checks the first, second and third hydraulic supply lines L1, L2 and L3. The short circuit is released to supply hydraulic pressure to all of the driving wheels F1, F2, R1, and R2 (S6), and the vehicle returns to an initial normal state.
이상에서와 같이 본 발명에 따르면, 자동차의 차동장치에 복잡한 차동제한장치를 통합하여 구성하지 않고, 자동차의 브레이크 시스템을 이용하여 간단한 구조로 차동제한 효과를 얻을 수 있게 되므로, 제작이 간단하고 비용이 절감되는 효과가 있다.As described above, according to the present invention, the differential limiting effect can be obtained by a simple structure using the brake system of the vehicle, without integrating a complicated differential limiting device into the differential of the vehicle, and thus the production is simple and costly. There is a saving effect.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020000081593A KR20020052353A (en) | 2000-12-26 | 2000-12-26 | Limited Slip Differential for automobile using break system and method for controling the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| KR1020000081593A KR20020052353A (en) | 2000-12-26 | 2000-12-26 | Limited Slip Differential for automobile using break system and method for controling the same |
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| KR20020052353A true KR20020052353A (en) | 2002-07-04 |
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| KR1020000081593A Ceased KR20020052353A (en) | 2000-12-26 | 2000-12-26 | Limited Slip Differential for automobile using break system and method for controling the same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200453605Y1 (en) * | 2011-02-08 | 2011-05-19 | 정경필 | Grounder for Mouse |
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2000
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200453605Y1 (en) * | 2011-02-08 | 2011-05-19 | 정경필 | Grounder for Mouse |
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