KR102159126B1 - Three-element control hydraulic control system for hydraulically operated SBW with limp home mode N and D speed function - Google Patents

Abstract

The present invention relates to a three-element control hydraulic control system for hydraulic SBW to which the lymph groove mode N, D-stage functions are added, and first to seventh operating elements mounted on a transmission to implement a transmission ratio by intercepting rotational elements, and A hydraulic line for supplying the line pressure to the first to seventh operating elements, a plurality of solenoid valves mounted on the hydraulic line to selectively supply line pressure to the first to seventh operating elements, and a hydraulic line for realizing the lymph home mode It includes a first lymph groove valve and a second lymph groove valve mounted on, and the solenoid valve includes an on-off solenoid valve that moves the position of the first and second lymph groove valves when the valve is opened, and all operations Although the solenoid valve that controls the hydraulic pressure applied to the element is provided in a normally row type that operates when energized, the first lymph groove valve, the second lymph groove valve, and the on-off solenoid valve change the line through which the hydraulic pressure flows to the lymph groove. It provides a three-element hydraulic control system for hydraulic SBW with added functions of the lymph groove mode N and D stages that can implement the mode.

Description

Three-element control hydraulic control system for hydraulically operated SBW with limp home mode N and D speed function}

The present invention relates to a three-element control hydraulic control system for hydraulic SBW with added function of the lymph groove mode N, D stage, and the lymph groove mode N, D in the SBW (SHIFT BY WIRE) type hydraulic system not equipped with a manual valve. It relates to a three-element hydraulic control system for hydraulic SBW with added lymph groove mode N and D stage functions capable of implementing stages.

1 illustrates a hydraulic circuit diagram of SBW specification for a transmission to which a manual valve is not applied. All of the solenoid valves are provided in a normally row type that opens when power is applied, and when the power is turned off when a failure occurs, the hydraulic pressure applied to each operating element 2 is removed. Since no hydraulic pressure is applied to all actuating elements 2, only a specific stage is implemented in which all actuating elements 2 are deactivated.

In this case, there is a limitation in checking which element has a failure in the TCU (TRANSMISSION CONTROL UNIT) only by the synchronization mismatch. As shown in Fig. 1, when the hydraulic circuit diagram of SBW specification for transmission is made to match one solenoid valve (1) and one pressure control valve (3) to one operating element (2) one-to-one However, since there is no separate hardware, it is logically impossible to implement a lymphatic home mode that prevents accidents by enabling the transmission in case of emergency.

In addition, in order to implement the lymph home function in software, it is necessary to determine where the failure factor is, but it is not easy to diagnose the failure under various driving conditions of the vehicle.

Also, since it is difficult to diagnose a fault, shift control excluding the faulty part is logically impossible.

In addition, there is a possibility that a fatal vehicle accident may occur because it is impossible to escape from an emergency situation when a transmission failure occurs.

Republic of Korea Patent Publication No. 10-2018-0040278 (2018.04.20.)

Accordingly, the object of the present invention in consideration of the above points is to implement the lymph groove mode N and D stage in the SBW (SHIFT BY WIRE) type hydraulic system not equipped with a manual valve. It is to provide a three-element hydraulic control system for hydraulic SBW with added functions.

In order to achieve the above object, the three-element control hydraulic control system for hydraulic SBW to which the lymph groove mode N, D-stage functions of an embodiment of the present invention are added, is mounted on the transmission to implement the transmission ratio by controlling the rotating elements. A plurality of solenoid valves mounted on the hydraulic line to selectively supply line pressure to the first to seventh operating elements; It includes a first lymph groove valve and a second lymph groove valve mounted on the hydraulic line to realize the lymph home mode, and the solenoid valve is on-off to move the first and second lymph groove valves in position when the open operation is performed. Includes solenoid valve.

In addition, the hydraulic line includes a first line and a second line to which line pressure is supplied in parallel, and the first line includes a first branch line and a third branch line connected in parallel with the first lymph groove valve. , The second branch line connected in parallel with the 24-switch valve, the eighth branch line, the fourth branch line connected to the ISG-switch valve, and the fifth branch line connected in parallel with the second lymph groove valve, and the sixth It may include a branch line and a seventh branch line.

In addition, the second line is connected to the ISG-switch valve to move the position by pressurization, the on-off solenoid valve is mounted on the second line, and the second line extends from the on-off solenoid valve to the first lymph groove valve. And a second lymph groove line extending from the on-off solenoid valve to the second lymph groove valve, and the on-off solenoid valve includes a second line, a first lymph groove line, and a first 2 Can communicate the lymph home line.

Further, the first operating element is connected through the ISG-switch valve and the first control line, the second operating element is connected through the ISG-switch valve and the second control line, and the third operating element is the first The lymph groove valve and the third control line are connected, and the fourth operation element is connected through the 24-switch valve and the fourth control line, and the fifth operation element is the second lymph groove valve and the fifth control line. The sixth operation element may be connected through the ISG-switch valve and the sixth control line, and the seventh operation element may be connected through the eighth branch line and the seventh control line.

In addition, a connection line connecting the first branch point between the first lymph groove valve and the first solenoid valve among the first branch lines and the second branch point between the 24-switch valve and the sixth solenoid valve among the eighth branch lines. Further, a pressure line for pressing the 24-switch valve is branched from the connection line, and a shuttle valve for supplying the line pressure introduced from the first branch line to the 24-switch valve may be mounted on the connection line.

In addition, the first lymph groove valve and the ISG-switch valve are connected in parallel through a first switch line and a second switch line, and the ISG-switch valve and the second lymph groove valve are connected through a fourth switch line. , The first lymph groove valve and the 24-switch valve may be connected through a third switch line.

In addition, a first solenoid valve of a normally row type is mounted on the first branch line, a second solenoid valve of a normally row type is mounted on the second branch line, and a third normally row type solenoid valve is mounted on the third branch line. The solenoid valve is installed, the 4th solenoid valve of the normally high type is installed on the 5th branch line, the 5th solenoid valve of the normally high type is installed on the 7th branch line, and the 8th branch line is normally high. Type 6 solenoid valve may be mounted.

In addition, as power is not applied to the first solenoid valve to the sixth solenoid valve, and the on-off solenoid valve is operated to open, the lymph home mode N stage is implemented, and power is not applied to the first solenoid valve to the sixth solenoid valve. And, as the on-off solenoid valve is operated to close, the lymph home mode D stage can be implemented.

In addition, the hydraulic line may further include a third line through which line pressure flows in parallel with the first line and the second line.

In addition, the third line may be connected to the ISG-switch valve in parallel with the fourth branch line.

According to the three-element control hydraulic control system for hydraulic SBW to which the lymph groove mode N and D stage functions are added according to an embodiment of the present invention configured as described above, the SBW type hydraulic system without a manual valve includes a first lymph groove valve, By providing a second lymph home valve and an on/off solenoid valve, it is possible to implement the lymph home mode by changing the line while the power is turned off in case of emergency.

In addition, if the lymphatic home mode D stage is not implemented, it is possible to diagnose a failure of the sixth solenoid valve that controls the hydraulic pressure applied to the seventh operating element, so that failure diagnosis is advantageous. Since it is possible to diagnose the failure of the sixth solenoid valve, another shift stage can be implemented by software.

In addition, when the shift is abnormal or a malfunction is recognized during operation, only the on-off solenoid valve and the sixth solenoid valve are operated, thereby implementing the N-stage and D-stages of the lymph home mode.

1 is an exemplary view of essential parts of a hydraulic circuit diagram of an SBW specification for a transmission to which a conventional manual valve is not applied,
2 is an exemplary view of a three-element control hydraulic control system for a hydraulic SBW to which a lymph groove mode N, D stage function is added according to an embodiment of the present invention;
3 is an exemplary view illustrating the implementation of the lymph groove mode N-stage of the three-element hydraulic control system for the hydraulic SBW to which the lymph-home mode N and D-stage functions of FIG. 2 are added;
FIG. 4 is an exemplary view illustrating the implementation of the lymph groove mode D stage of the three-element hydraulic control system for hydraulic SBW to which the lymph groove mode N and D stage functions of FIG. 2 are added;
5 is an operation element table and a solenoid valve operation table of the three-element hydraulic control system for hydraulic SBW to which the lymph groove mode N and D stage functions of FIG. 2 are added.

Hereinafter, with reference to the accompanying drawings, a three-element hydraulic control system for hydraulic SBW to which the lymph groove mode N and D stage functions are added according to an embodiment of the present invention will be described.

As shown in Figs. 2 to 5, the three-element control hydraulic control system for hydraulic SBW to which the lymph groove mode N and D stage functions are added according to an embodiment of the present invention is provided in a transmission to implement a transmission ratio by intercepting a rotating element. The mounted first to seventh operating elements (B1, B2, B3, B4, C1, C2, C3) and the first to seventh operating elements (B1, B2, B3, B4, C1, C2, C3) A plurality of hydraulic lines 100 for supplying input pressure and a plurality of hydraulic lines 100 are mounted to selectively supply line pressure to the first to seventh operating elements B1, B2, B3, B4, C1, C2, C3. It includes two solenoid valves, and a first lymph groove valve 200 and a second lymph groove valve 300 mounted on the hydraulic line 100 for realizing the lymph groove mode, and the solenoid valve is It includes an on-off solenoid valve 400 for moving the position of the home valve 200 and the second lymph groove valve 300.

The hydraulic line 100 includes a first line 110 and a second line 120 to which line pressure is supplied in parallel. The first line 110 is connected in parallel with the first branch line 111, the third branch line 113, and the 24-switch valve 500 connected in parallel with the first lymph groove valve 200. The second branch line 112, the eighth branch line 118, the fourth branch line 114 connected to the ISG-switch valve 600, and a fifth connected in parallel with the second lymph groove valve 300 A branch line 115, a sixth branch line 116, and a seventh branch line 117 are included.

The second line 120 is connected to the ISG-switch valve 600 to move the position by pressing. The on/off solenoid valve 400 is mounted on the second line 120. The second line 120 includes a first lymph groove line 121 extending from the on-off solenoid valve 400 to the first lymph groove valve 200 and a second lymph groove valve from the on-off solenoid valve 400 Including a second lymph groove line 122 extended to 300, the on-off solenoid valve 400, the second line 120 and the first lymph groove line 121 and the second lymph groove when the open operation The line 122 communicates. When the on-off solenoid valve 400 is closed, the second line 120, the first lymph home line 121, and the second lymph home line 122 may be blocked. The on-off solenoid valve 400 may be completely closed so that line pressure does not flow through the second line 120.

The first operation element B1 is connected through the ISG-switch valve 600 and the first control line 141, and the second operation element B2 is the ISG-switch valve 600 and the second control line. It is connected through 142, the third operating element (B3) is connected through the first lymph groove valve 200 and the third control line 143, the fourth operating element (B4) is, 24-switch The valve 500 and the fourth control line 144 are connected, and the fifth operation element is connected through the second lymph groove valve 300 and the fifth control line 145, and the sixth operation element, It is connected through the ISG-switch valve 600 and the sixth control line 146, and the seventh operating element is connected through the eighth branch line 118 and the seventh control line 147.

The first branch point P1 between the first lymph groove valve 200 and the first solenoid valve S1 of the first branch line 111, and the 24-switch valve 500 of the eighth branch line 118 A connection line 151 connecting the second branch point P2 between the and the sixth solenoid valve S6 is provided. A pressure line for pressing the 24-switch valve 500 is branched from the connection line 151. A shuttle valve 700 that supplies the line pressure introduced from the first branch line 111 to the 24-switch valve 500 is mounted on the connection line 151.

The first lymph groove valve 200 and the ISG-switch valve 600 are connected in parallel through the first switch line 161 and the second switch line 162. The ISG-switch valve 600 and the second lymph groove valve 300 are connected through a fourth switch line 164. The first lymph groove valve 200 and the 24-switch valve 500 are connected through a third switch line 163.

A first solenoid valve S1 of a normally row type is mounted on the first branch line 111. A second solenoid valve S2 of a normally row type is mounted on the second branch line 112. A third solenoid valve S3 of a normally row type is mounted on the third branch line 113. A fourth solenoid valve S4 of a normally high type is mounted on the fifth branch line 115. A fifth solenoid valve S5 of a normally high type is mounted on the seventh branch line 117. A sixth solenoid valve S6 of a normally high type is mounted on the eighth branch line 118.

The hydraulic line 100 further includes a third line 130 through which line pressure flows in parallel with the first line 110 and the second line 120. The third line 130 is connected to the ISG-switch valve 600 in parallel with the fourth branch line 114. An ISG-pump is mounted on the third line 130. The ISG-pump pressurizes the fluid existing in the third line 130 when the ISG (idle stop go), which must start rapidly after the engine is stopped, is operated.

The on-off solenoid valve 400 operates to open and moves the first and second lymph groove valves 200 and 300 to each other. As the position of the first lymph groove valve 200 moves, the first branch line 111 communicates with the first switch line 161, and the second switch line 162 communicates with the third switch line 163. In communication, the third switch line 163 communicates with the third control line 143. As the position of the second lymph groove valve 300 is moved, the sixth branch line 116 and the fifth control line 145 communicate, and the sixth branch line 116 and the fourth switch line 164 are Communicate.

When the on-off solenoid valve 400 is kept closed, the first and second lymph groove valves 200 and 300 do not move in position. As the first lymph groove valve 200 stops moving, the first switch line 161 communicates with the vent line EX, and the second switch line 162 communicates with the vent line EX, The third switch line 163 communicates with the band line EX. The vent line EX is connected to the oil tank. As the position of the second lymph groove valve 300 does not move, the sixth branch line 116 and the fifth control line 145 communicate, and the sixth branch line 116 and the fourth switch line 164 It is communicated.

When the ISG-switch valve 600 is pressurized through the second line 120 and moves to the position, the second control line 142 and the second switch line 162 communicate with each other, and the first control line 141 and The first switch line 161 is in communication, and the fourth switch line 164 and the sixth control line 146 are in communication. When the ISG-switch valve 600 does not move, the second control line 142 communicates with the second line 120 and the first control line 141 communicates with the second line 120.

When the 24-switch valve 500 is pressurized through the first pressure line 152 and the second pressure line 153, the second branch line 112 and the third switch line 163 communicate with each other. When the 24-switch valve 500 is pressurized through the first pressure line 152, the second pressure line 153, and the eighth branch line 118 and moves to the position, the second branch line 112 and the fourth control Line 144 communicates. The shuttle valve 700 flows the line pressure introduced through the connection line 151 to the second pressure line 153.

Referring to FIG. 3, as power is not applied to the first solenoid valve S1 to the sixth solenoid valve S6 and the on-off solenoid valve 400 is operated to open, the lymph home mode N stage is implemented. When implementing the N-stage lymph home mode, line pressure is supplied to the first line 110 and the second line 120.

The fourth solenoid valve S4, the fifth solenoid valve S5, and the sixth solenoid valve S6, which are normally high types, are kept open. The first and second lymph groove valves 200 and 300 are moved in position by the line pressure introduced from the on-off solenoid valve 400. The ISG-switch valve 600 is also moved in position by the line pressure introduced through the second line 120.

As described above, as the second lymph groove valve 300 moves in position, the sixth branch line 116 and the fifth control line 145 communicate, and the seventh branch line 117 and the fourth The switch line 164 communicates. Since the ISG-switch valve 600 is moved to the position, the fourth switch line 164 is in communication with the sixth control line 146.

As a result, line pressure is applied to the fifth operating element C1 through the sixth branch line 116, the second lymph groove valve 300, and the fifth control line 145, and the seventh branch line 117 , Line pressure is applied to the sixth operating element C2 through the fifth solenoid valve S5, the second lymph groove valve 300, the ISG-switch valve 600, and the sixth control line 146. Line pressure is applied to the seventh operating element C3 through the eighth branch line 118, the sixth solenoid valve S6, and the seventh control line 147. In addition, the line pressures introduced into the 24-switch valve 500 and the shuttle valve 700 through the eighth branch line 118 are offset from each other in the 24-switch valve 500, and the 24-switch valve 500 is Do not move.

The fifth actuation element C1, the sixth actuation element C2, and the seventh actuation element C3 intercept a specific rotation element, thereby implementing the lymph groove mode N-stage. In particular, even if any one of the fourth to sixth solenoid valves S4 to S6 fails, at least two operating elements are operated, so that the N-stage can be maintained in the limp home mode.

4, power is not applied to the first solenoid valve (S1) to the fifth solenoid valve (S5), power is applied to the sixth solenoid valve (S6), so that the on-off solenoid valve 400 is closed. As it operates, the lymph home mode D stage is implemented. When implementing the lymph home mode D stage, line pressure is supplied to the first line 110 and the second line 120.

The fourth solenoid valve S4 and the fifth solenoid valve S5, which are normally high types, remain open, and the sixth solenoid valve S6 is closed. As the on-off solenoid valve 400 is closed, the first and second lymph groove valves 200 and 300 do not move in position. The ISG-switch valve 600 is moved in position by the line pressure introduced through the second line 120.

As described above, as the second lymph groove valve 300 does not move, the sixth branch line 116 and the fifth control line 145 communicate, and the sixth branch line 116 and the fourth branch line 116 4 switch lines 164 communicate. Since the ISG-switch valve 600 is moved to the position, the fourth switch line 164 is in communication with the sixth control line 146.

Accordingly, the line pressure introduced into the sixth branch line 116 is applied to the fifth operating element C1 through the fifth control line 145. The line pressure introduced into the sixth branch line 116 is applied to the sixth operating element C2 through the fourth switch line 164 and the sixth control line 146. Since the sixth solenoid valve S6 is operated to close, the line pressure flowing into the eighth branch line 118 does not flow into the seventh control line 147.

The fifth actuating element C1 and the sixth actuating element C2 intercept the specific rotational element, thereby implementing the lymph groove mode D stage. When the line pressure is applied to the seventh operating element C3 while implementing the lymph home mode D stage, a failure of the sixth solenoid valve S6 can be diagnosed.

Through the operation factor table shown in FIG. 5, a reverse gear shift, a neutral gear shift, and a forward gear shift are implemented. As shown in FIG. 5, a total of three operating elements are selectively operated in order to implement a 10-speed forward shift stage with the first to seventh operating elements C3, respectively.

When the fifth operating element C1 is additionally operated at the neutral end in which the first and second operating elements B1 and B2 are operated, a reverse stage is implemented. When the sixth operating element C2 is additionally operated at the neutral end in which the first and second operating elements B1 and B2 are operated, the first forward stage is implemented.

From the 7th forward step to the 10th forward step, the first operating element B1 and the seventh operating element C3 remain actuated. Accordingly, the 24-switch valve 500 is in a state in which the second branch line 112 and the fourth control line 144 are in communication. In the case of the 7th forward to 10th forward, the line pressure supplied to the fourth operating element B4 is controlled by opening the second solenoid valve S2 that controls the line pressure supplied to the second operating element B2. .

When the transmission is operated in normal mode, the on-off solenoid valve 400 is completely locked when the reverse is stopped, completely blocking the line pressure flow of the second line 120. When implementing the neutral stage and forward diagnosis stage, it remains open. When the transmission is in normal mode, line pressure is supplied to the first line 110, the second line 120, and the third line 130.

In the reverse stage, power is applied to the first solenoid valve (S1) and the second solenoid valve (S2) of the normally low type, and the fifth solenoid valve (S5) and the sixth solenoid valve (S6) of the normally high type, It is implemented by applying a line pressure to the first operating element (B1), the second operating element (B2), and the fifth operating element (C1). When implementing the reverse stage, since the on-off solenoid valve 400 is completely closed, the first lymph groove valve 200, the second lymph groove valve 300, and the ISG-switch valve 600 do not move in position.

Accordingly, the line pressure is applied to the first control element B1 through the third line 130, the ISG-switch valve 600, and the first control line 141. Line pressure is applied to the second control element B2 through the third line 130, the ISG-switch valve 600, and the second control line 142. Line pressure is applied to the fifth operating element C1 through the fifth branch line 115, the second lymph groove valve 300, and the fifth control line 145.

In addition, the line pressure introduced into the first lymph groove valve 200 through the first branch line 111 and the first solenoid valve S1 flows into the oil tank through the vent line EX. The line pressure introduced into the first lymph groove valve 200 through the second branch line 112 and the second solenoid valve S2 flows into the oil tank through the vent line EX.

The neutral end is a normally low type first solenoid valve (S1), a second solenoid valve (S2), and a normally high type of fourth solenoid valve (S4), a fifth solenoid valve (S5), and a sixth solenoid valve ( When power is applied to S6), line pressure is applied to the first and second operating elements B1 and B2.

Through the first branch line 111, the first solenoid valve (S1), the first lymph groove valve 200, the first switch line 161, the ISG-switch valve 600, the first control line 141 Line pressure is applied to the first operating element B1. The second branch line 112, the second solenoid valve (S2), the 24-switch valve 500, the third switch line 163, the second switch line 162, the ISG-switch valve 600, the second Line pressure is applied to the second operating element B2 through the control line 142.

In the neutral stage state, when the parking solenoid valve PS is closed, the parking stage is implemented. As the parking solenoid valve (PS) is closed, the parking cylinder (PC) is operated.

In the first forward stage, power is applied to the first solenoid valve (S1), the second solenoid valve (S2), which is a normally low type, and the fourth solenoid valve (S4) and the sixth solenoid valve (S6), which are the normally high type. As a result, the line pressure is applied to the first operation element B1, the second operation element B2, and the sixth operation element C2.

Through the first branch line 111, the first solenoid valve (S1), the first lymph groove valve 200, the first switch line 161, the ISG-switch valve 600, the first control line 141 Line pressure is applied to the first operating element B1. The second branch line 112, the second solenoid valve (S2), the 24-switch valve 500, the third switch line 163, the second switch line 162, the ISG-switch valve 600, the second Line pressure is applied to the second operating element B2 through the control line 142. The seventh branch line 117, the second lymph groove valve 300, the fourth switch line 164, the ISG-switch valve 600, through the sixth control line 146 to the sixth operating element (C2). Line pressure is applied.

In the forward second stage, power is applied to the second solenoid valve (S2), the third solenoid valve (S3), which is a normally low type, and the fourth solenoid valve (S4) and the sixth solenoid valve (S6), which are the normally high type. It is implemented by applying a line pressure to the second operating element (B2), the third operating element (B3), and the sixth operating element (C2).

The second branch line 112, the second solenoid valve (S2), the 24-switch valve 500, the third switch line 163, the second switch line 162, the ISG-switch valve 600, the second Line pressure is applied to the second operating element B2 through the control line 142. Through the third branch line 113, the third solenoid valve (S3), the first lymph groove valve (200), the third switch line 163, and the third control line 143 to the third operating element (B3). Line pressure is applied. The seventh branch line 117, the second lymph groove valve 300, the fourth switch line 164, the ISG-switch valve 600, through the sixth control line 146 to the sixth operating element (C2). Line pressure is applied.

In the forward third stage, power is applied to the second solenoid valve (S2) of the normally low type and the fourth solenoid valve (S4) of the normally high type, so that the second operation element (B2), the sixth operation element (C2), It is implemented by applying a line pressure to the seventh operating element C3.

The second branch line 112, the second solenoid valve (S2), the 24-switch valve 500, the third switch line 163, the second switch line 162, the ISG-switch valve 600, the second Line pressure is applied to the second operating element B2 through the control line 142. The seventh branch line 117, the second lymph groove valve 300, the fourth switch line 164, the ISG-switch valve 600, through the sixth control line 146 to the sixth operating element (C2). Line pressure is applied. Line pressure is applied to the seventh operating element C3 through the eighth branch line 118, the sixth solenoid valve S6, and the seventh control line 147.

In the forward fourth stage, power is applied to the second solenoid valve (S2) of the normally low type, the fourth solenoid valve (S4) of the normal high type, and the sixth solenoid valve (S6), thereby the second operating element (B2), It is implemented by applying a line pressure to the fifth and sixth operating elements C1 and C2.

The second branch line 112, the second solenoid valve (S2), the 24-switch valve 500, the third switch line 163, the second switch line 162, the ISG-switch valve 600, the second Line pressure is applied to the second operating element B2 through the control line 142. Line pressure is applied to the fifth operating element C1 through the fifth branch line 115, the fourth solenoid valve S4, the second lymph groove valve 300, and the fifth control line 145. The seventh branch line 117, the second lymph groove valve 300, the fourth switch line 164, the ISG-switch valve 600, through the sixth control line 146 to the sixth operating element (C2). Line pressure is applied.

In the forward 5th stage, power is not applied to the first solenoid valve (S1) to the third solenoid valve (S3) of the normally low type and the fourth solenoid valve (S4) to the sixth solenoid valve (S6) of the normally high type. As a result, the line pressure is applied to the fifth operating element C1, the sixth operating element C2, and the seventh operating element C3.

Line pressure is applied to the fifth operating element C1 through the fifth branch line 115, the fourth solenoid valve S4, the second lymph groove valve 300, and the fifth control line 145. Through the seventh branch line 117, the fifth solenoid valve (S5), the second lymph groove valve 300, the fourth switch line 164, the ISG-switch valve 600, and the sixth control line 146. Line pressure is applied to the sixth operating element C2 through the sixth control line 146. Line pressure is applied to the seventh operating element C3 through the eighth branch line 118, the sixth solenoid valve S6, and the seventh control line 147.

In the forward sixth stage, power is applied to the first solenoid valve (S1) of the normally low type and the sixth solenoid valve (S6) of the normally high type, so that the first operation element (B1), the fifth operation element (C1), It is implemented by applying a line pressure to the sixth operating element C2.

Through the first branch line 111, the first solenoid valve (S1), the first lymph groove valve 200, the first switch line 161, the ISG-switch valve 600, the first control line 141 Line pressure is applied to the first operating element B1. Line pressure is applied to the fifth operating element C1 through the fifth branch line 115, the fourth solenoid valve S4, the second lymph groove valve 300, and the fifth control line 145. Through the seventh branch line 117, the fifth solenoid valve (S5), the second lymph groove valve 300, the fourth switch line 164, the ISG-switch valve 600, and the sixth control line 146. Line pressure is applied to the sixth operating element C2 through the sixth control line 146.

The forward 7th stage is the first solenoid valve (S1) of the normally low type and the fourth solenoid valve (S4) of the normally high type by supplying power to the first operation element (B1), the sixth operation element (C2), It is implemented by applying a line pressure to the seventh operating element C3.

Through the first branch line 111, the first solenoid valve (S1), the first lymph groove valve 200, the first switch line 161, the ISG-switch valve 600, the first control line 141 Line pressure is applied to the first operating element B1. Through the seventh branch line 117, the fifth solenoid valve (S5), the second lymph groove valve 300, the fourth switch line 164, the ISG-switch valve 600, and the sixth control line 146. Line pressure is applied to the sixth operating element C2 through the sixth control line 146. Line pressure is applied to the seventh operating element C3 through the eighth branch line 118, the sixth solenoid valve S6, and the seventh control line 147.

In the forward eighth stage, power is applied to the first solenoid valve (S1) of the normally low type and the fifth solenoid valve (S5) of the normally high type, so that the first operation element (B1), the fifth operation element (C1), It is implemented by applying a line pressure to the seventh operating element C3.

Through the first branch line 111, the first solenoid valve (S1), the first lymph groove valve 200, the first switch line 161, the ISG-switch valve 600, the first control line 141 Line pressure is applied to the first operating element B1. Line pressure is applied to the fifth operating element C1 through the fifth branch line 115, the fourth solenoid valve S4, the second lymph groove valve 300, and the fifth control line 145. Line pressure is applied to the seventh operating element C3 through the eighth branch line 118, the sixth solenoid valve S6, and the seventh control line 147.

In the forward ninth stage, power is applied to the first solenoid valve (S1), the third solenoid valve (S3), which is a normally low type, and the fourth solenoid valve (S4) and the fifth solenoid valve (S5), which are the normally high type. It is implemented by applying a line pressure to the first operating element (B1), the third operating element (B3), and the seventh operating element (C3).

Through the first branch line 111, the first solenoid valve (S1), the first lymph groove valve 200, the first switch line 161, the ISG-switch valve 600, the first control line 141 Line pressure is applied to the first operating element B1. Through the third branch line 113, the third solenoid valve (S3), the first lymph groove valve (200), the third switch line 163, and the third control line 143 to the third operating element (B3). Line pressure is applied. Line pressure is applied to the seventh operating element C3 through the eighth branch line 118, the sixth solenoid valve S6, and the seventh control line 147.

In the forward 10th stage, power is applied to the first solenoid valve (S1) of the normally low type, the second solenoid valve (S2), and the fourth solenoid valve (S4) of the normally high type, and the fifth solenoid valve (S5). It is implemented by applying a line pressure to the first operating element (B1), the fourth operating element (B4), and the seventh operating element (C3).

Through the first branch line 111, the first solenoid valve (S1), the first lymph groove valve 200, the first switch line 161, the ISG-switch valve 600, the first control line 141 Line pressure is applied to the first operating element B1. Line pressure is applied to the fourth operating element B4 through the second branch line 112, the second solenoid valve S2, the 24-switch valve 500, and the fourth control line 144. Line pressure is applied to the seventh operating element C3 through the eighth branch line 118, the sixth solenoid valve S6, and the seventh control line 147.

According to the three-element control hydraulic control system for hydraulic SBW to which the lymph groove mode N and D stage functions are added according to an embodiment of the present invention configured as above, the SBW type hydraulic system without a manual valve includes a first lymph groove valve ( 200), the second lymph home valve 300, and the on-off solenoid valve 400 are provided, so that in case of emergency, the line can be changed while the power is turned off to implement the lymph home mode.

In addition, if the lymphatic home mode D stage is not implemented, it is possible to diagnose a failure of the sixth solenoid valve S6 that controls the hydraulic pressure applied to the seventh operating element C3, so that failure diagnosis is advantageous. Since it is possible to diagnose a failure of the sixth solenoid valve S6, another shift stage can be implemented with software.

In addition, when a shift is abnormal or a failure is recognized during operation, only the on-off solenoid valve 400 and the sixth solenoid valve are operated, thereby implementing the N-stage and D-stages of the lymph home mode.

B1: first operating element B2: second operating element
B3: third operating element B4: fourth operating element
C1: fifth operating element C2: sixth operating element
C3: 7th operating element S1: 1st solenoid valve
S2: 2nd solenoid valve
S3: 3rd solenoid valve
S4: 4th solenoid valve
S5: 5th solenoid valve
S6: 6th solenoid valve
100: hydraulic line 110: first line
111: first branch line 112: second branch line
113: third branch line 114: fourth branch line
115: 5th branch line 116: 6th branch line
117: 7th branch line 118: 8th branch line
120: second line 121: first lymphatic home line
122: second lymph home line 130: third line
141: first control line 142: second control line
143: third control line 144: fourth control line
145: fifth control line 146: sixth control line
147: seventh control line 151: connection line
152: first pressure line 153: second pressure line
161: first switch line 162: second switch line
163: third switch line 164: fourth switch line
200: first lymph groove valve 300: second lymph groove valve
400: on-off solenoid valve
500: 24-switch valve 600: ISG-switch valve
700: shuttle valve P1: first branch
P2: 2nd branch

Claims (10)

First to seventh operating elements mounted on the transmission to implement a transmission ratio by controlling the rotating elements;
A hydraulic line for supplying pressure to the first to seventh operating elements;
A plurality of solenoid valves mounted on the hydraulic line to selectively supply line pressure to the first to seventh operating elements;
It includes a first lymph groove valve and a second lymph groove valve mounted on the hydraulic line to implement a lymph home mode,
The solenoid valve,
Including an on-off solenoid valve for moving the position of the first lymph groove valve and the second lymph groove valve during the opening operation,
The hydraulic line,
It includes a first line and a second line to which line pressure is supplied in parallel,
The first line,
A first branch line and a third branch line connected to the first lymph groove valve;
A second branch line and an eighth branch line connected to the 24-switch valve;
A fourth branch line connected to the ISG-switch valve;
A three-element control hydraulic control system for a hydraulic SBW to which a lymph groove mode N and D stage functions including a fifth branch line, a sixth branch line, and a seventh branch line connected to the second lymph groove valve are added.
delete The method of claim 1,
The second line,
It is connected to the ISG-switch valve to move the position by pressurizing,
The on-off solenoid valve is mounted on the second line,
The second line,
A first lymph groove line extending from the on-off solenoid valve to the first lymph groove valve;
And a second lymph groove line extending from the on-off solenoid valve to the second lymph groove valve,
The on-off solenoid valve is a three-element control hydraulic control for a hydraulic SBW with an addition of a lymph groove mode N, D stage function that communicates the second line, the first lymph home line, and the second lymph home line during the open operation. system.
The method of claim 1,
The first operating element,
It is connected through the ISG-switch valve and the first control line,
The second operating element,
It is connected through the ISG-switch valve and a second control line,
The third operating element,
It is connected through the first lymph groove valve and a third control line,
The fourth operating element,
It is connected through the 24-switch valve and the fourth control line,
The fifth operating element,
It is connected through the second lymph groove valve and a fifth control line,
The sixth operating element,
It is connected through the ISG-switch valve and the sixth control line,
The seventh operating element,
A three-element control hydraulic control system for hydraulic SBW to which the lymph groove mode N and D stage functions connected through the eighth branch line and the seventh control line are added.
The method of claim 1,
A connection connecting a first branch point between the first lymph groove valve and a first solenoid valve among the first branch lines and a second branch point between the 24-switch valve and a sixth solenoid valve among the eighth branch lines Include more lines,
A first pressure line for pressing the 24-switch valve is branched from the connection line,
Lymph groove mode N, D stage function equipped with a shuttle valve that supplies line pressure introduced from the first branch line to the connection line to the 24-switch valve through a second pressure line Control hydraulic control system.
The method of claim 1,
The first lymph groove valve and the ISG-switch valve are connected through a first switch line and a second switch line,
The ISG-switch valve and the second lymph groove valve are connected through a fourth switch line,
The first lymphatic groove valve and the 24-switch valve are connected through a third switch line, and a three-element control hydraulic control system for a hydraulic SBW to which a lymph groove mode N and D stage functions are added.
The method of claim 1,
A first solenoid valve of a normally row type is mounted on the first branch line,
A second solenoid valve of a normally row type is mounted on the second branch line,
A third solenoid valve of a normally row type is mounted on the third branch line,
A fourth solenoid valve of a normally high type is mounted on the fifth branch line,
A fifth solenoid valve of a normally high type is mounted on the seventh branch line,
A three-element control hydraulic control system for hydraulic SBW in which the lymph groove mode N and D stage functions are added to the eighth branch line with a sixth solenoid valve of a normally high type.
The method of claim 7,
As power is not applied to the first solenoid valve to the sixth solenoid valve and the on-off solenoid valve is operated to open, the lymph home mode N stage is implemented,
As power is not applied to the first solenoid valve to the sixth solenoid valve, and the on-off solenoid valve is operated to close, the lymph-home mode N and D-stage functions are added to implement the lymph-home mode D stage. 3-element control hydraulic control system for use.
The method of claim 1,
The hydraulic line,
Lymph groove mode N, D stage functions further comprising a third line through which line pressure flows in parallel with the first line and the second line.
The method of claim 9,
The third line,
The ISG-switch valve and connected to the lymph groove mode N, D stage function is added hydraulic SBW 3-element control hydraulic control system.

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