Modular hydraulic control valve group for a hydrodynamic torque converter

Abstract

The application discloses a modular hydraulic control valve group of a hydraulic torque converter, which comprises a valve body and a partition plate, and the valve body and the partition plate are sealingly connected; the valve body is internally provided with a valve group inlet pressure regulating valve, a torque converter inlet pressure regulating valve, a torque converter outlet pressure regulating valve, a torque converter locking pressure regulating valve and an accumulator, wherein the torque converter locking pressure regulating valve, the accumulator, the valve group inlet pressure regulating valve and the torque converter inlet pressure regulating valve are sequentially and adjacently arranged, and the torque converter outlet pressure regulating valve is arranged on one side of the whole of the torque converter locking pressure regulating valve, the accumulator, the valve group inlet pressure regulating valve and the torque converter inlet pressure regulating valve. The spool and the valve body used in the independent hydraulic torque converter are designed as an integrated type, and the occurrence of leakage and faults can be reduced through structure optimization.

Description

Technical Field

[0001] This invention belongs to the field of hydraulic torque converter control, and specifically relates to a modular hydraulic control valve group for hydraulic torque converters. Background Technology

[0002] As a component that converts kinetic energy through hydraulic and hydrodynamic means, the hydraulic torque converter has a long history since its invention and is used in engineering machinery, road vehicles and special equipment. It is a key component connecting the engine and the reduction gearbox.

[0003] Hydraulic torque converters offer high stability during operation, and many applications integrate them into gear transmissions, such as hydraulic automatic transmissions and power shift transmissions used in various heavy-duty road vehicles, construction machinery, and special equipment. However, due to specific usage conditions, a hydraulic torque converter component independent of the engine and transmission is still required to achieve hydraulic transmission functionality.

[0004] Currently, existing independent hydraulic torque converters require a matching hydraulic control system. This control system contains many control valves. Most hydraulic control systems for current hydraulic torque converters are separate control modules, meaning that multiple control valves are designed as separate control modules and connected by pipelines. Such hydraulic systems are complex, occupy a lot of space, are inefficient, and are prone to leaks and malfunctions. Summary of the Invention

[0005] To address the problems existing in the prior art, the present invention aims to provide a modular hydraulic control valve group for a hydraulic torque converter. The present invention designs the valve core and valve body used in the independent hydraulic torque converter into an integrated unit, which occupies relatively small space, has high efficiency, and can reduce the occurrence of leakage and failure.

[0006] The technical solution adopted in this invention is as follows:

[0007] A modular hydraulic control valve group for a hydraulic torque converter includes a valve body and a partition, with a sealed connection between the valve body and the partition.

[0008] The valve body is equipped with a valve group inlet pressure regulating valve, a torque converter inlet pressure regulating valve, a torque converter outlet pressure regulating valve, a torque converter lockout pressure regulating valve, and an accumulator. The torque converter lockout pressure regulating valve, the accumulator, the valve group inlet pressure regulating valve, and the torque converter inlet pressure regulating valve are arranged adjacent to each other in sequence. The torque converter outlet pressure regulating valve is located on one side of the entire assembly of the torque converter lockout pressure regulating valve, the accumulator, the valve group inlet pressure regulating valve, and the torque converter inlet pressure regulating valve.

[0009] Preferably, the valve body is provided with a valve group inlet oil passage, a torque converter inlet oil passage, a torque converter outlet oil passage, a valve group outlet oil passage, a torque converter lockout oil passage, a first return oil passage, and a second return oil passage; the partition is provided with a valve group inlet oil passage interface, a torque converter inlet oil passage interface, a torque converter outlet oil passage interface, a valve group outlet oil passage interface, a torque converter lockout oil passage interface, a first return oil passage interface, and a second return oil passage interface.

[0010] The valve group inlet oil circuit interface is connected to the valve group inlet oil circuit; the valve group inlet oil circuit is connected to the inlet of the valve group inlet pressure regulating valve core and the inlet of the torque converter lock-up pressure regulating valve;

[0011] The outlet of the pressure regulating valve core at the valve group inlet is connected to the torque converter inlet oil circuit;

[0012] The outlet of the torque converter lock-up pressure regulating valve is connected to the torque converter lock-up oil circuit, the torque converter lock-up oil circuit is connected to the torque converter lock-up oil circuit interface, the drain port of the torque converter lock-up pressure regulating valve is connected to the first return oil circuit, and the first return oil circuit is connected to the first return oil circuit interface.

[0013] The accumulator valve core is connected to the torque converter lock-up oil circuit;

[0014] The torque converter inlet oil circuit interface is connected to the torque converter inlet oil circuit, the torque converter inlet oil circuit is connected to the inlet of the torque converter inlet pressure regulating valve core, the outlet of the torque converter inlet pressure regulating valve core is connected to the second return oil circuit, and the second return oil circuit is connected to the second return oil circuit interface.

[0015] The torque converter outlet oil circuit interface is connected to the torque converter outlet oil circuit, the torque converter outlet oil circuit is connected to the inlet of the torque converter outlet pressure regulating valve core, and the outlet of the torque converter outlet pressure regulating valve core is connected to the valve group outlet oil circuit interface.

[0016] Preferably, the valve body is equipped with a valve group inlet oil circuit pressure test plug at the valve group inlet oil circuit, a torque converter inlet oil circuit pressure test plug at the torque converter inlet oil circuit, a torque converter outlet oil circuit pressure test plug at the torque converter outlet oil circuit, a valve group outlet oil circuit pressure test plug at the valve group outlet oil circuit, and a torque converter lockout oil circuit pressure test plug at the torque converter lockout oil circuit.

[0017] Preferably, the pressure test plugs for the valve group inlet oil circuit, the torque converter inlet oil circuit, the torque converter outlet oil circuit, the valve group outlet oil circuit, and the torque converter lockout oil circuit are all installed on the non-oil passage surface of the valve body.

[0018] Preferably, the valve body has a first valve chamber for installing the valve group inlet pressure regulating valve. One end of the first valve chamber extends to the side of the valve body. The valve group inlet pressure regulating valve includes a valve group inlet pressure regulating valve core, a valve group inlet pressure regulating spring, and a valve group inlet pressure regulating valve mounting plug. The valve group inlet pressure regulating valve core, the valve group inlet pressure regulating spring, and the valve group inlet pressure regulating valve mounting plug are sequentially fitted together in the first valve chamber. The valve group inlet pressure regulating spring is in a compressed state, and the valve group inlet pressure regulating valve mounting plug is connected to the opening of the first valve chamber.

[0019] Preferably, the valve body has a second valve chamber for installing the torque converter inlet pressure regulating valve. One end of the second valve chamber extends to the side of the valve body. The torque converter inlet pressure regulating valve includes a torque converter inlet pressure regulating valve core, a torque converter inlet pressure regulating spring, and a torque converter inlet pressure regulating valve mounting plug. The torque converter inlet pressure regulating valve core, the torque converter inlet pressure regulating spring, and the torque converter inlet pressure regulating valve mounting plug are sequentially fitted together in the second valve chamber. The torque converter inlet pressure regulating spring is in a compressed state, and the torque converter inlet pressure regulating valve mounting plug is connected to the opening of the second valve chamber.

[0020] Preferably, the valve body is provided with a third valve chamber for the torque converter outlet pressure regulating valve, one end of which extends to the side of the valve body. The torque converter outlet pressure regulating valve includes a torque converter outlet pressure regulating valve core, a torque converter outlet pressure regulating spring, and a torque converter inlet pressure regulating valve mounting plug. The torque converter outlet pressure regulating valve core, the torque converter outlet pressure regulating spring, and the torque converter inlet pressure regulating valve mounting plug are sequentially fitted together in the third valve chamber. The torque converter outlet pressure regulating spring is in a compressed state, and the torque converter inlet pressure regulating valve mounting plug is connected to the opening of the third valve chamber.

[0021] Preferably, a fourth valve chamber is provided on the valve body, one end of which extends to the side of the valve body. The torque converter locking pressure regulating valve is an integral cartridge valve, and the torque converter locking pressure regulating valve is installed in the fourth valve chamber.

[0022] Preferably, the valve body has a fifth valve chamber for installing the accumulator, one end of which extends to the side of the valve body. The accumulator includes an accumulator valve core, an accumulator adjusting spring, and an accumulator valve mounting plug. The accumulator valve core, the accumulator adjusting spring, and the accumulator valve mounting plug are sequentially fitted together in the fifth valve chamber. The accumulator adjusting spring is in a compressed state, and the accumulator valve mounting plug is connected to the opening of the fifth valve chamber.

[0023] The present invention has the following beneficial effects:

[0024] This invention relates to a modular hydraulic control valve group for torque converters. It integrates the inlet pressure regulating valve, torque converter inlet pressure regulating valve, torque converter outlet pressure regulating valve, torque converter lock-up pressure regulating valve, and accumulator into a single valve group. This reduces pipeline connections, shortens oil circuit length, lowers pressure loss, and improves hydraulic system efficiency. Furthermore, this design significantly reduces the number of sealing surfaces compared to separate assemblies, greatly reducing the probability of oil leakage and other malfunctions. The integrated design offers advantages such as lighter weight, compact structure, and faster control response, saving overall installation space, improving system control efficiency, reducing assembly complexity, and lowering manufacturing, production, storage, transportation, and operation management costs. It is an excellent choice for the layout of independent torque converter hydraulic systems. Specifically, in this modular hydraulic control valve group for the torque converter, the valve group inlet pressure regulating valve and the torque converter inlet pressure regulating valve are adjacent. One outlet oil path of the valve group inlet pressure regulating valve directly leads to the inlet of the torque converter inlet pressure regulating valve, thus making this oil path extremely short and effectively reducing oil loss. The torque converter lockout pressure regulating valve is adjacent to the accumulator, and the accumulator and the valve group inlet pressure regulating valve are adjacent, which can make full use of the space of the entire valve group. This results in a short oil path distance between the inlet of the valve group inlet pressure regulating valve and the inlet of the torque converter lockout pressure regulating valve, and a short oil path distance from the outlet of the torque converter lockout pressure regulating valve to the accumulator, thus effectively reducing oil loss. The torque converter outlet pressure regulating valve is connected to an external oil path separately. The torque converter outlet pressure regulating valve has weak correlation with other valves. Therefore, the torque converter outlet pressure regulating valve is located on one side of the entire assembly of the torque converter lockout pressure regulating valve, the accumulator, the valve group inlet pressure regulating valve, and the torque converter inlet pressure regulating valve. Attached Figure Description

[0025] Figure 1 This is a front view of the modular hydraulic control valve group of the hydraulic torque converter of the present invention;

[0026] Figure 2 This is a top view of the modular hydraulic control valve group of the hydraulic torque converter of the present invention;

[0027] Figure 3 yes Figure 1 A sectional view along section AA;

[0028] Figure 4 This is a bottom view of the modular hydraulic control valve group of the hydraulic torque converter of the present invention;

[0029] Figure 5(a) is a schematic diagram of the layout of each oil passage in the valve body of the present invention (each valve is not shown); Figure 5(b) is a schematic diagram of the layout of each oil passage in the valve body of the present invention (each valve is shown);

[0030] Figure 6 This is a hydraulic schematic diagram of the modular hydraulic control valve group of the hydraulic torque converter of the present invention.

[0031] In the picture:

[0032] F1 - Valve body, H1 - Diaphragm;

[0033] Ga - Valve assembly inlet oil circuit pressure test plug, Gb - Torque converter inlet oil circuit pressure test plug, Gc - Torque converter outlet oil circuit pressure test plug, Gd - Valve assembly outlet oil circuit pressure test plug, Ge - Torque converter lockout oil circuit pressure test plug;

[0034] A1 - Valve group inlet pressure regulating valve core, A2 - Valve group inlet pressure regulating spring, A3 - Valve group inlet pressure regulating valve mounting plug, B1 - Torque converter inlet pressure regulating valve core, B2 - Torque converter inlet pressure regulating spring, B3 - Torque converter inlet pressure regulating valve mounting plug, C1 - Torque converter outlet pressure regulating valve core, C2 - Torque converter outlet pressure regulating spring, C3 - Torque converter inlet pressure regulating valve mounting plug, E1 - Accumulator valve core, E2 - Accumulator regulating spring, E3 - Accumulator valve mounting plug;

[0035] A - Valve group inlet pressure regulating valve, B - Torque converter inlet pressure regulating valve, C - Torque converter outlet pressure regulating valve, D - Torque converter lockout pressure regulating valve, E - Accumulator;

[0036] Ta - Valve assembly inlet oil circuit pressure test port, Tb - Torque converter inlet oil circuit pressure test port, Tc - Torque converter outlet oil circuit pressure test port, Td - Valve assembly outlet oil circuit pressure test port, Te - Torque converter lockout oil circuit pressure test port;

[0037] Ja - Valve assembly inlet oil circuit interface, Jb - Torque converter inlet oil circuit interface, Jc - Torque converter outlet oil circuit interface, Jd - Valve assembly outlet oil circuit interface, Je - Torque converter lockout oil circuit interface, Jf - First return oil circuit interface, Jg - Second return oil circuit interface.

[0038] a-valve assembly inlet oil circuit, b-torque converter inlet oil circuit, c-torque converter outlet oil circuit, d-valve assembly outlet oil circuit, e-torque converter lock-up oil circuit, f-first return oil circuit, g-second return oil circuit; Detailed Implementation

[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0040] This invention provides a modular hydraulic control valve group for a hydraulic torque converter, which is specifically applied in an independent hydraulic torque converter, and designs the valve core and valve body used in the independent hydraulic torque converter as an integrated unit.

[0041] See Figures 1-6 The modular hydraulic control valve group of the hydraulic torque converter of the present invention includes a valve body F1 and a partition H1, as shown below. Figure 1 As shown, the baffle H1 is installed at the bottom of the valve body F1, and the sealing surfaces of the valve body F1 and the baffle H1 are in contact and fixedly connected by bolts.

[0042] The valve body F1 contains a valve group inlet pressure regulating valve A, a torque converter inlet pressure regulating valve B, a torque converter outlet pressure regulating valve C, a torque converter lockout pressure regulating valve D, and an accumulator E. The torque converter lockout pressure regulating valve D, the accumulator E, the valve group inlet pressure regulating valve A, and the torque converter inlet pressure regulating valve B are arranged adjacent to each other in sequence. The torque converter outlet pressure regulating valve C is located on one side of the entire assembly of the torque converter lockout pressure regulating valve D, the accumulator E, the valve group inlet pressure regulating valve A, and the torque converter inlet pressure regulating valve B.

[0043] The valve body F1 is equipped with valve group inlet oil passage a, torque converter inlet oil passage b, torque converter outlet oil passage c, valve group outlet oil passage d, torque converter lockout oil passage e, first return oil passage f, and second return oil passage g; the partition H1 is equipped with valve group inlet oil passage interface Ja, torque converter inlet oil passage interface Jb, torque converter outlet oil passage interface Jc, valve group outlet oil passage interface Jd, torque converter lockout oil passage interface Je, first return oil passage interface Jf, and second return oil passage interface Jg.

[0044] The valve group inlet pressure regulating valve A is installed at the middle of the valve body F1. The valve body F1 has a first valve chamber for installing the valve group inlet pressure regulating valve A. One end of the first valve chamber extends to the side of the valve body F1. The valve group inlet pressure regulating valve A includes a valve group inlet pressure regulating valve core A1, a valve group inlet pressure regulating spring A2, and a valve group inlet pressure regulating valve mounting plug A3. The valve group inlet pressure regulating valve core A1, valve group inlet pressure regulating spring A2, and valve group inlet pressure regulating valve mounting plug A3 are sequentially fitted together in the first valve chamber. The valve group inlet pressure regulating spring A2 is in a compressed state. The valve group inlet pressure regulating valve mounting plug A3 is connected to the opening of the first valve chamber. The connection method is a detachable connection. The inlet of the valve group inlet pressure regulating valve A is connected to the valve group inlet oil passage a. The valve group inlet oil passage a is connected to the valve group inlet oil passage interface Ja. The outlet of the valve group inlet pressure regulating valve A is connected to the torque converter inlet oil passage b. The torque converter inlet oil passage b is connected to the torque converter inlet oil passage interface Jb.

[0045] The torque converter inlet pressure regulating valve B is adjacent to the valve group inlet pressure regulating valve A; the valve body F1 has a second valve chamber for installing the torque converter inlet pressure regulating valve B, one end of which extends to the side of the valve body F1. The torque converter inlet pressure regulating valve B includes a torque converter inlet pressure regulating valve core B1, a torque converter inlet pressure regulating spring B2, and a torque converter inlet pressure regulating valve mounting plug B3. The torque converter inlet pressure regulating valve core B1, the torque converter inlet pressure regulating spring B2, and the torque converter inlet pressure regulating valve mounting plug B3 are sequentially fitted together in the second valve chamber. The torque converter inlet pressure regulating spring B2 is in a compressed state, and the torque converter inlet pressure regulating valve mounting plug B3 is connected to the opening of the second valve chamber. The inlet of the torque converter inlet pressure regulating valve B is connected to the torque converter inlet oil passage b, which is connected to the torque converter inlet oil passage interface Jb. The outlet of the torque converter inlet pressure regulating valve B is connected to the second return oil passage g, which is connected to the second return oil passage interface Jg.

[0046] The torque converter outlet pressure regulating valve C is adjacent to the torque converter inlet pressure regulating valve B; the valve body F1 has a third valve chamber for the torque converter outlet pressure regulating valve C, one end of which extends to the side of the valve body F1. The torque converter outlet pressure regulating valve C includes a torque converter outlet pressure regulating valve core C1, a torque converter outlet pressure regulating spring C2, and a torque converter inlet pressure regulating valve mounting plug C3. The torque converter outlet pressure regulating valve core C1, the torque converter outlet pressure regulating spring C2, and the torque converter inlet pressure regulating valve mounting plug C3 are sequentially fitted together in the third valve chamber. The torque converter outlet pressure regulating spring C2 is in a compressed state, and the torque converter inlet pressure regulating valve mounting plug C3 is connected to the opening of the third valve chamber. The inlet of the torque converter outlet pressure regulating valve C is connected to the torque converter outlet oil line c, the torque converter outlet oil line c is connected to the torque converter outlet oil line interface Jc, the outlet of the torque converter outlet pressure regulating valve C is connected to the valve group outlet oil line d, and the valve group outlet oil line d is connected to the valve group outlet oil line interface Jd.

[0047] The torque converter lock-up pressure regulating valve D is an integral cartridge valve, located on the left side of valve body F1 (see...). Figure 1 A fourth valve chamber is provided on the valve body F1, with one end extending to the side of the valve body F1. The torque converter locking pressure regulating valve D is installed in the fourth valve chamber. The inlet of the torque converter locking pressure regulating valve D is connected to the valve group inlet oil passage a, which is connected to the valve group inlet oil passage interface Ja. The outlet of the torque converter locking pressure regulating valve D is connected to the torque converter locking oil passage e, which is connected to the torque converter locking oil passage interface Je. The valve drain port of the torque converter locking pressure regulating valve D is connected to the first return oil passage f, which is connected to the first return oil passage interface Jf.

[0048] The accumulator E is located between the valve group inlet pressure regulating valve A and the torque converter lock-up pressure regulating valve D. A fifth valve chamber for installing the accumulator E is provided within the valve body F1, with one end extending to the side of the valve body F1. The accumulator E includes an accumulator valve core E1, an accumulator adjusting spring E2, and an accumulator valve mounting plug E3. These components are sequentially fitted together within the fifth valve chamber. The accumulator adjusting spring E2 is in a compressed state, and the accumulator valve mounting plug E3 is connected to the opening of the fifth valve chamber. The pressure regulation feedback inlet of the accumulator E is connected to the torque converter lock-up oil circuit e, which is connected to the torque converter lock-up oil circuit interface Je.

[0049] Valve body F1 has a valve group inlet oil passage pressure test plug Ga installed at valve group inlet oil passage a; a torque converter inlet oil passage pressure test plug Gb installed at torque converter inlet oil passage b; a torque converter outlet oil passage pressure test plug Gc installed at torque converter outlet oil passage c; a valve group outlet oil passage pressure test plug Gd installed at valve group outlet oil passage d; and a torque converter lockout oil passage pressure test plug Ge installed at torque converter lockout oil passage e. All pressure test plugs Ga, Gb, Gc, Gd, and Ge are installed on the non-oil passage surface of valve body F1. The pressure test plug Ga of the valve group inlet oil circuit, the pressure test plug Gb of the torque converter inlet oil circuit, the pressure test plug Gc of the torque converter outlet oil circuit, the pressure test plug Gd of the valve group outlet oil circuit, and the pressure test plug Ge of the torque converter lockout oil circuit are connected to the valve body F1 by threads, and the plugs are detachable.

[0050] In the modular hydraulic control valve group of the hydraulic torque converter of the present invention:

[0051] One outlet oil path of valve group inlet pressure regulating valve A leads directly to the inlet of torque converter inlet pressure regulating valve B. Therefore, valve group inlet pressure regulating valve A and torque converter inlet pressure regulating valve B are adjacent in the design, and the connecting oil passage (i.e. torque converter inlet oil passage b) is extremely short, which can effectively reduce oil loss.

[0052] The inlet of the valve group inlet pressure regulating valve A is connected to the inlet of the torque converter locking pressure regulating valve D, and the outlet of the torque converter locking pressure regulating valve D is connected to the accumulator E. Therefore, the torque converter locking pressure regulating valve D is adjacent to the accumulator E in the design. Due to space utilization, the accumulator E is adjacent to the valve group inlet pressure regulating valve A. Under this design, the oil passage distance is still small, and the oil loss can be reduced by designing a wider oil passage (i.e., valve group inlet oil passage a). The torque converter outlet pressure regulating valve C is connected to an external oil passage, so its correlation with other valves is weak, and it is placed at the outermost position.

[0053] The specific working process of the modular hydraulic control valve group for the torque converter described above in this invention is as follows:

[0054] The pressurized oil is introduced into the valve group from the valve group inlet oil line interface Ja. The oil enters the valve group inlet oil line a. The oil in the valve group inlet oil line a is divided into two paths: one path leads to the valve group inlet pressure regulating valve core A1, and the other path leads to the torque converter lock-up pressure regulating valve D.

[0055] The oil flowing to the valve group inlet pressure regulating valve core A1 acts on the valve group inlet pressure regulating valve core A1. Affected by the valve group inlet pressure regulating spring A2, the valve group inlet pressure regulating valve core A1 repeatedly moves to achieve the function of regulating pressure. During the pressure regulation process, the oil flowing out of the valve group inlet pressure regulating valve A1 is connected to the torque converter inlet oil circuit b.

[0056] The oil flowing to the torque converter lock-up pressure regulating valve D is controlled by the valve to regulate its pressure on the torque converter lock-up oil circuit e. This pressure is then connected to the outside environment through the torque converter lock-up oil circuit interface Je to supply oil to the torque converter lock-up clutch piston. The oil discharged during the pressure regulation process by the torque converter lock-up pressure regulating valve D is connected to the first return oil circuit f and then to the first return oil circuit interface J. f And from the first return oil circuit interface J f Connect to the outside world for oil return.

[0057] The accumulator valve core E1 is also connected to the torque converter lock-up oil circuit e. The oil in the torque converter lock-up oil circuit e acts on the accumulator valve core E1 and is affected by the accumulator regulating spring E2, which enables the accumulator E to operate repeatedly and alleviate pressure fluctuations.

[0058] The oil from the torque converter inlet oil passage b flows to the torque converter inlet pressure regulating valve core B1 and the torque converter inlet oil passage interface Jb.

[0059] The oil flowing to the torque converter inlet pressure regulating valve core B1 acts on the torque converter inlet pressure regulating valve core B1. Affected by the torque converter inlet pressure regulating spring B2, the torque converter inlet pressure regulating valve core B1 repeatedly actuates to achieve the function of regulating pressure. The oil flowing out during the pressure regulation process of the torque converter inlet pressure regulating valve core B1 goes to the second return oil circuit g. The second return oil circuit g is connected to the second return oil circuit interface Jg, and the second return oil circuit interface Jg connects to the outside world for return oil.

[0060] The oil flowing to the torque converter inlet oil circuit interface Jb is connected to the outside through this interface to supply oil to the torque converter.

[0061] When the oil returns from the torque converter to the valve group, it flows through the torque converter outlet oil line interface Jc to the torque converter outlet oil line c. The torque converter outlet pressure regulating valve core C1 is connected to the torque converter outlet oil line c. The oil acts on the torque converter outlet pressure regulating valve core C1. Affected by the torque converter outlet pressure regulating spring C2, the torque converter outlet pressure regulating valve core C1 repeatedly actuates to achieve the function of regulating pressure. The oil flowing out during the pressure regulation process of the torque converter outlet pressure regulating valve C is connected to the valve group outlet oil line d. The valve group outlet oil line d is connected to the valve group outlet oil line interface Jd, and the valve group outlet oil line interface Jd is connected to the outside.

[0062] During use, all pressure test plugs can be installed or removed. The pressure test plugs can be replaced with pressure sensors to monitor the pressure of each part of the valve group in real time, reducing the difficulty of troubleshooting when problems occur.

Claims

1. A modular hydraulic control valve group for a hydraulic torque converter, characterized in that, Includes a valve body (F1) and a partition (H1), with a sealed connection between the valve body (F1) and the partition (H1); The valve body (F1) contains a valve group inlet pressure regulating valve (A), a torque converter inlet pressure regulating valve (B), a torque converter outlet pressure regulating valve (C), a torque converter lockout pressure regulating valve (D), and an accumulator (E). The torque converter lockout pressure regulating valve (D), the accumulator (E), the valve group inlet pressure regulating valve (A), and the torque converter inlet pressure regulating valve (B) are arranged adjacent to each other in sequence. The torque converter outlet pressure regulating valve (C) is located on one side of the entire assembly of the torque converter lockout pressure regulating valve (D), the accumulator (E), the valve group inlet pressure regulating valve (A), and the torque converter inlet pressure regulating valve (B). The valve body (F1) is provided with valve group inlet oil passage (a), torque converter inlet oil passage (b), torque converter outlet oil passage (c), valve group outlet oil passage (d), torque converter lock-up oil passage (e), first return oil passage (f), and second return oil passage (g); the partition (H1) is provided with valve group inlet oil passage interface (Ja), torque converter inlet oil passage interface (Jb), torque converter outlet oil passage interface (Jc), valve group outlet oil passage interface (Jd), torque converter lock-up oil passage interface (Je), first return oil passage interface (Jf), and second return oil passage interface (Jg). The valve group inlet oil circuit interface (Ja) is connected to the valve group inlet oil circuit (a); the valve group inlet oil circuit (a) is connected to the inlet of the valve group inlet pressure regulating valve core (A1) and the inlet of the torque converter lock-up pressure regulating valve (D); The outlet of the valve group inlet pressure regulating valve core (A1) is connected to the torque converter inlet oil passage (b); The outlet of the torque converter lock-up pressure regulating valve (D) is connected to the torque converter lock-up oil circuit (e), the torque converter lock-up oil circuit (e) is connected to the torque converter lock-up oil circuit interface (Je), the drain port of the torque converter lock-up pressure regulating valve (D) is connected to the first return oil circuit (f), and the first return oil circuit (f) is connected to the first return oil circuit interface (Jf). The accumulator valve core (E1) is connected to the torque converter lock-up oil circuit (e); The torque converter inlet oil circuit interface (Jb) is connected to the torque converter inlet oil circuit (b), the torque converter inlet oil circuit (b) is connected to the inlet of the torque converter inlet pressure regulating valve core (B1), the outlet of the torque converter inlet pressure regulating valve core (B1) is connected to the second return oil circuit (g), and the second return oil circuit (g) is connected to the second return oil circuit interface (Jg). The torque converter outlet oil circuit interface (Jc) is connected to the torque converter outlet oil circuit (c), the torque converter outlet oil circuit (c) is connected to the inlet of the torque converter outlet pressure regulating valve core (C1), and the outlet of the torque converter outlet pressure regulating valve core (C1) is connected to the valve group outlet oil circuit interface (Jd).

2. The modular hydraulic control valve group for a hydraulic torque converter according to claim 1, characterized in that, The valve body (F1) is equipped with a valve group inlet oil passage pressure test plug (Ga) at the valve group inlet oil passage (a), a torque converter inlet oil passage pressure test plug (Gb) at the torque converter inlet oil passage (b), a torque converter outlet oil passage pressure test plug (Gc) at the torque converter outlet oil passage (c), a valve group outlet oil passage pressure test plug (Gd) at the valve group outlet oil passage (d), and a torque converter lock-up oil passage pressure test plug (Ge) at the torque converter lock-up oil passage (e).

3. A modular hydraulic control valve group for a hydraulic torque converter according to claim 2, characterized in that, The pressure test plugs (Ga) for the valve group inlet oil circuit, (Gb) for the torque converter inlet oil circuit, (Gc) for the torque converter outlet oil circuit, (Gd) for the valve group outlet oil circuit, and (Ge) for the torque converter lockout oil circuit are all installed on the non-oil passage surface of the valve body (F1).

4. A modular hydraulic control valve group for a hydraulic torque converter according to claim 1, characterized in that, The valve body (F1) has a first valve chamber for installing the valve group inlet pressure regulating valve (A). One end of the first valve chamber extends to the side of the valve body (F1). The valve group inlet pressure regulating valve (A) includes a valve group inlet pressure regulating valve core (A1), a valve group inlet pressure regulating spring (A2), and a valve group inlet pressure regulating valve mounting plug (A3). The valve group inlet pressure regulating valve core (A1), the valve group inlet pressure regulating spring (A2), and the valve group inlet pressure regulating valve mounting plug (A3) are sequentially fitted together in the first valve chamber. The valve group inlet pressure regulating spring (A2) is in a compressed state, and the valve group inlet pressure regulating valve mounting plug (A3) is connected to the opening of the first valve chamber.

5. A modular hydraulic control valve group for a hydraulic torque converter according to claim 1, characterized in that, The valve body (F1) has a second valve chamber for installing the torque converter inlet pressure regulating valve (B). One end of the second valve chamber extends to the side of the valve body (F1). The torque converter inlet pressure regulating valve (B) includes a torque converter inlet pressure regulating valve core (B1), a torque converter inlet pressure regulating spring (B2), and a torque converter inlet pressure regulating valve mounting plug (B3). The torque converter inlet pressure regulating valve core (B1), the torque converter inlet pressure regulating spring (B2), and the torque converter inlet pressure regulating valve mounting plug (B3) are sequentially fitted together in the second valve chamber. The torque converter inlet pressure regulating spring (B2) is in a compressed state, and the torque converter inlet pressure regulating valve mounting plug (B3) is connected to the opening of the second valve chamber.

6. A modular hydraulic control valve group for a hydraulic torque converter according to claim 1, characterized in that, The valve body (F1) has a third valve chamber for the torque converter outlet pressure regulating valve (C). One end of the third valve chamber extends to the side of the valve body (F1). The torque converter outlet pressure regulating valve (C) includes a torque converter outlet pressure regulating valve core (C1), a torque converter outlet pressure regulating spring (C2), and a torque converter inlet pressure regulating valve mounting plug (C3). The torque converter outlet pressure regulating valve core (C1), the torque converter outlet pressure regulating spring (C2), and the torque converter inlet pressure regulating valve mounting plug (C3) are sequentially fitted together in the third valve chamber. The torque converter outlet pressure regulating spring (C2) is in a compressed state, and the torque converter inlet pressure regulating valve mounting plug (C3) is connected to the opening of the third valve chamber.

7. A modular hydraulic control valve group for a hydraulic torque converter according to claim 1, characterized in that, A fourth valve chamber is provided on the valve body (F1), one end of which extends to the side of the valve body (F1). The torque converter locking pressure regulating valve (D) is an integral cartridge valve, and the torque converter locking pressure regulating valve (D) is installed in the fourth valve chamber.

8. A modular hydraulic control valve group for a hydraulic torque converter according to claim 1, characterized in that, The valve body (F1) has a fifth valve chamber for installing the accumulator (E). One end of the fifth valve chamber extends to the side of the valve body (F1). The accumulator (E) includes an accumulator valve core (E1), an accumulator adjusting spring (E2), and an accumulator valve mounting plug (E3). The accumulator valve core (E1), the accumulator adjusting spring (E2), and the accumulator valve mounting plug (E3) are sequentially fitted together in the fifth valve chamber. The accumulator adjusting spring (E2) is in a compressed state, and the accumulator valve mounting plug (E3) is connected to the opening of the fifth valve chamber.

Images