CN216789191U

CN216789191U - High-pressure control system of wet-type double clutch transmission

Info

Publication number: CN216789191U
Application number: CN202122441286.5U
Authority: CN
Inventors: 夏永强; 陈国涛; 俞爽; 梁鹏程; 赵婷婷
Original assignee: Shanghai Automobile Gear Works
Current assignee: Shanghai Automobile Gear Works
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2022-06-21
Anticipated expiration: 2031-10-11

Abstract

A high pressure control system for a wet dual clutch transmission, comprising: high pressure power supply, low pressure power supply, first check valve, second check valve, filter, filtration cooling module, lubricated subassembly and high pressure energy storage ware subassembly, wherein: the low-pressure power source, the second one-way valve, the filtering and cooling assembly and the lubricating assembly are sequentially connected, and the high-pressure power source, the filtering assembly, the first one-way valve and the high-pressure energy accumulator assembly are sequentially connected. The device realizes the independent control of the execution loop and the cooling loop, thereby reducing the energy consumption of the system and improving the efficiency.

Description

High-pressure control system of wet-type double clutch transmission

Technical Field

The utility model relates to a technology in the field of a double-clutch automatic gearbox, in particular to a high-pressure control system of a wet double-clutch gearbox.

Background

The existing low-pressure wet type dual-clutch automatic transmission is more and more difficult to meet the requirements of customers. All power of the transmission provided with the traditional hydraulic system depends on input of an engine, and the hydraulic system can work in a low-efficiency area under partial working conditions, so that the automobile is high in oil consumption and large in emission. In order to solve the defects, a high-pressure structure is formed on the basis of a low-pressure wet type double-clutch transmission, an actuating mechanism and a lubricating and cooling system are decoupled, the accurate control of subareas is realized, and the flow pressure requirements of the system are met in an optimized mode, so that the oil consumption and the emission are reduced, and the customer requirements are met. In addition, the system adopts an electronic pump for supplying oil and carries out real-time control through a central controller. The oil pump in the traditional wet double-clutch transmission is driven by an engine, namely the rotating speed is passive, and can not be adjusted and controlled according to the rear end requirement. Especially at higher engine speeds, for example after 2000rpm, it provides an excess of flow, high energy consumption and low efficiency. The main common ways of high voltage systems are at present: oil pump motor control and oil circuit solenoid valve control.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a high-pressure control system of a wet type double-clutch transmission, which realizes the independent control of an execution loop and a cooling loop, thereby reducing the energy consumption of the system and improving the efficiency.

The utility model is realized by the following technical scheme:

the utility model comprises the following steps: high pressure power supply, low pressure power supply, first check valve, second check valve, filter, filtration cooling module, lubricated subassembly and high pressure energy storage ware subassembly, wherein: the low-pressure power source, the second one-way valve, the filtering and cooling assembly and the lubricating assembly are sequentially connected, and the high-pressure power source, the filtering assembly, the first one-way valve and the high-pressure energy accumulator assembly are sequentially connected.

The high pressure power source comprises: a first drive motor and a gear pump, wherein: the first drive motor drives a gear pump which is connected to the filter and supplies oil thereto.

The low pressure power source comprises: a second drive motor and a gerotor pump, wherein: the second drive motor drives a gerotor pump that is connected to and supplies oil to the filter cooling module.

The high pressure accumulator assembly comprises: prefill valve, third check valve and accumulator, wherein: the liquid charging valve, the energy accumulator and the third one-way valve are connected in sequence, so that high-pressure storage of oil is realized, and the oil is distributed to downstream oil ways as required.

The filtering and cooling assembly comprises: a second filter, a cooler, and a bypass valve, wherein: the second filter is connected with the cooler, and the bypass valve is connected with the branches of the second filter and the cooler in parallel, so that the oil is filtered and cooled.

The lubricating component comprises: the clutch lubrication regulating valve, the gear shaft lubrication throttling port and the lubrication pressure regulating valve are arranged in parallel, and the flow regulation and the pressure limitation of the clutch lubrication and the gear shaft lubrication are realized together.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic illustration of a hydraulic power source;

FIG. 3 is a schematic diagram of a high voltage actuator assembly;

FIG. 4 is a schematic view of a cooling and lubrication adjustment member;

FIG. 5 is a graph comparing the flow rate of the prior art and the embodiment;

FIG. 6 is a graph comparing efficiency of the prior art and the examples;

in the figure: the device comprises a gear pump 1, a cycloid pump 2, a first driving motor 3, a second driving motor 4, a first filter 5, a second one-way valve 6, a first one-way valve 7, a third one-way valve 8, an energy accumulator 9, a liquid charging valve 10, a high-pressure energy accumulator assembly 11, a bypass valve 12, a second filter 13, an oil cooler 14, a gear shaft lubricating throttling orifice 15, a clutch lubricating regulating valve 16, a lubricating pressure control valve 17, a filtering and cooling assembly 18, a high-pressure power source 19, a low-pressure power source 20 and a lubricating assembly 21.

Detailed Description

As shown in fig. 1, the present embodiment relates to a high pressure control system for a wet dual clutch transmission, which includes: high pressure power supply 19, low pressure power supply 20, second check valve 6, first check valve 7, first filter 5, filtration cooling module 18, lubrication module 21 and high pressure accumulator 11 subassembly, wherein: the low-pressure power source 20, the second one-way valve 6, the filtering and cooling assembly 18 and the lubricating assembly 21 are sequentially connected, and the high-pressure power source 19, the first filter 5, the first one-way valve 7 and the high-pressure energy accumulator assembly 11 are sequentially connected.

The high-pressure power source 19 includes: first driving motor 3, gear pump 1, wherein: the drive motor 3 drives a gear pump 1, which gear pump 1 is connected to and supplies oil to a first filter 5. The low pressure power source includes: second driving motor 4, cycloid pump 2, wherein: the driving motor 4 drives the cycloid pump 2, and the cycloid pump 2 is connected with the filtering and cooling assembly 18 and supplies oil to the filtering and cooling assembly.

The high pressure accumulator assembly 11 piece includes: liquid filling valve 10, third check valve 8, accumulator 9, wherein: the liquid charging valve 10, the energy accumulator 9 and the third one-way valve 8 are connected in sequence. High-pressure storage of oil is realized, and the oil is distributed to downstream oil ways according to requirements.

The filtering and cooling assembly 18 includes: a second filter 13, a cooler 14, a bypass valve 12, wherein: the second filter 13 is connected to a cooler 14, to which the bypass valve 12 is connected in parallel. The oil liquid is filtered and cooled, and a certain protection effect is achieved. Thereby protecting the hydraulic components of the whole system to a certain extent and simultaneously bringing the heat generated by the system into the air.

The lubricating assembly 21 comprises: clutch lubrication regulating valve 16, gear shaft lubrication throttling orifice 15, lubrication pressure regulating valve 17, wherein: the clutch lubrication regulating valve 16, the gear shaft lubrication throttling port 15 and the lubrication pressure regulating valve 17 are respectively connected in parallel. The flow regulation and pressure limitation of the clutch lubrication and the gear shaft lubrication are realized together.

The device works in the following way: the motor drives the oil pump, the oil pump sucks oil from the oil pan of the gearbox, the oil is conveyed to the high-pressure energy accumulator, and the energy accumulator supplies oil to the gear shifting and clutch control oil circuit as required, so that the effects of improving system response and reducing energy consumption are achieved; the cooling oil circuit is also driven by the motor to drive the oil pump, the oil pump sucks oil from the oil pan of the gearbox, the oil is radiated by the cooler, and the cooled oil is conveyed to the clutch and the gear shaft, so that the cooling effect on the clutch and the gear shaft is achieved. According to the oil temperature of the clutch, the rotating speed of the motor is controlled, so that the flow required by cooling is controlled, and the effect of reducing energy consumption is realized.

The device adopts the oil pump independently driven by the small motor, so that the rotating speed can be independently controlled; the main oil way adopts an energy accumulator to store energy, and can supply oil as required. The clutch cooling adopts a proportional adjustment scheme, so that the temperature of the clutch is effectively controlled, and the system efficiency is improved; the cooling system is independently supplied with oil by the motor-driven pump, so that the flow of the cooling system is ensured to be supplied according to the requirement, and the energy consumption is further reduced. The system adopts a high-pressure low-leakage scheme, so that the system response is improved, and the energy consumption is reduced.

The foregoing embodiments may be modified in many different ways by those skilled in the art without departing from the spirit and scope of the utility model, which is defined by the appended claims and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A high pressure control system for a wet dual clutch transmission, comprising: high pressure power supply, low pressure power supply, first check valve, second check valve, filter, filtration cooling module, lubricated subassembly and high pressure energy storage ware subassembly, wherein: the low-pressure power source, the second one-way valve, the filtering and cooling assembly and the lubricating assembly are sequentially connected, and the high-pressure power source, the filtering assembly, the first one-way valve and the high-pressure energy accumulator assembly are sequentially connected.

2. The high pressure control system for a wet dual clutch transmission as recited in claim 1 wherein said high pressure power source comprises: a first drive motor and a gear pump, wherein: the first drive motor drives a gear pump which is connected to and supplies oil to the filter.

3. The high pressure control system for a wet dual clutch transmission as recited in claim 1 wherein said low pressure power source comprises: a second drive motor and a gerotor pump, wherein: the second drive motor drives a gerotor pump that is connected to and supplies oil to the filter cooling module.

4. The high pressure control system for a wet dual clutch transmission as recited in claim 1 wherein said high pressure accumulator assembly comprises: prefill valve, third check valve and accumulator, wherein: the liquid charging valve, the energy accumulator and the third one-way valve are connected in sequence.

5. The high pressure control system for a wet dual clutch transmission as recited in claim 1 wherein said filter cooling assembly comprises: a second filter, a cooler, and a bypass valve, wherein: the second filter is connected with the cooler, and the bypass valve is connected with the second filter and a branch of the cooler in parallel.

6. The high pressure control system for a wet dual clutch transmission as recited in claim 1 wherein said lubrication assembly comprises: the clutch lubricating regulating valve, the gear shaft lubricating throttling opening and the lubricating pressure regulating valve are arranged in parallel.