CN216923961U

CN216923961U - Quick heating system of gearbox oil

Info

Publication number: CN216923961U
Application number: CN202220334749.XU
Authority: CN
Inventors: 郭茂利; 范述鑫; 赵志强; 赵洪杰; 汪雪; 张德维; 孙超; 孙少峰
Original assignee: Shengrui Transmission Co Ltd
Current assignee: Shengrui Transmission Co Ltd
Priority date: 2022-02-19
Filing date: 2022-02-19
Publication date: 2022-07-08
Anticipated expiration: 2032-02-19

Abstract

The utility model relates to a quick heating system for gearbox oil, which comprises an engine exhaust pipe, a gearbox oil bottom shell assembly and branch pipelines, wherein the engine exhaust pipe is connected with the engine exhaust pipe; the gearbox oil pan assembly comprises a gearbox oil pan and a heat exchange shell, and a closed heat exchange cavity is enclosed by the heat exchange shell and the outer wall of the gearbox oil pan; the branch pipeline comprises an air inlet pipe and an air outlet pipe, the air inlet end of the air inlet pipe is communicated with an engine exhaust pipe, and the air outlet end of the air inlet pipe is communicated with the heat exchange cavity; the air inlet end of the air outlet pipe is communicated with the heat exchange cavity, and the air outlet end of the air outlet pipe is communicated with an engine exhaust pipe; the air inlet pipe is provided with an electromagnetic control valve, and the air outlet pipe is provided with a one-way valve; when the electromagnetic control valve is opened, tail gas in the engine exhaust pipe flows through the air inlet pipe, the heat exchange cavity and the air outlet pipe in sequence and then flows into the engine exhaust pipe again. The oil temperature of the oil pan of the gearbox is quickly increased by fully utilizing the self condition of the whole vehicle, and no additional energy consumption is increased; the oil temperature of the gearbox can be quickly enabled to reach the optimal state, and the abrasion of parts of the gearbox is reduced.

Description

Quick heating system of gearbox oil

Technical Field

The utility model relates to the technical field of transmissions, in particular to a quick heating system for gearbox oil.

Background

In cold weather, the oil temperature of the gearbox is low, the temperature rise is slow, the lubrication of the gearbox is poor, the abrasion of parts is aggravated, and the service life of the gearbox is influenced; the control oil pressure of the valve plate is unstable, and the gear shifting logic is influenced; and the problem of high oil consumption of the engine is caused.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a quick heating system for gearbox oil, which utilizes high-temperature tail gas discharged by an engine to heat the gearbox oil after the engine is started, reduces the abrasion of parts and prolongs the service life of a gearbox.

In order to solve the technical problems, the technical scheme of the utility model is as follows: a quick heating system for gearbox oil comprises an engine exhaust pipe, a gearbox oil bottom shell assembly and a branch pipeline;

the gearbox oil pan assembly comprises a gearbox oil pan and a heat exchange shell, and a closed heat exchange cavity is enclosed by the heat exchange shell and the outer wall of the gearbox oil pan;

the branch pipeline comprises an air inlet pipe and an air outlet pipe, the air inlet end of the air inlet pipe is communicated with an engine exhaust pipe, and the air outlet end of the air inlet pipe is communicated with the heat exchange cavity; the air inlet end of the air outlet pipe is communicated with the heat exchange cavity, and the air outlet end of the air outlet pipe is communicated with an engine exhaust pipe;

the air inlet pipe is provided with an electromagnetic control valve, and the air outlet pipe is provided with a one-way valve; when the electromagnetic control valve is opened, tail gas in the engine exhaust pipe flows through the air inlet pipe, the heat exchange cavity and the air outlet pipe in sequence and then flows into the engine exhaust pipe again.

As a preferable technical scheme, an airflow guide structure is arranged in the heat exchange cavity and used for guiding airflow entering the heat exchange cavity to flow.

Preferably, the airflow guiding structure is a labyrinth grating, and the labyrinth grating is arranged on the heat exchange shell or the outer wall of the gearbox oil pan.

As a preferred technical solution, the air flow guiding structure is a heat dissipation pipe fixed on the outer wall of the gearbox oil pan.

As an optimal technical scheme, a connecting platform is arranged on the outer wall of the gearbox oil pan and is annular, and the heat exchange shell is fixedly and hermetically connected with the connecting platform.

As a preferred technical scheme, the heat exchange cavity is formed on the inner side of the connecting table, and the heat exchange shell is of a flat plate type structure.

As a preferable technical scheme, the heat exchange cavity is formed inside the heat exchange shell, and an opening of the heat exchange cavity faces to the outer wall of the gearbox oil pan.

Preferably, the intake end of the intake pipe extends into the exhaust pipe of the engine, and has an airflow guide surface for guiding the airflow into the intake pipe.

Preferably, the included angle between the air inlet pipe and the air flow direction in the exhaust pipe of the engine is smaller than 90 degrees.

As a preferred technical scheme, the air inlet pipe and the air outlet pipe are respectively positioned on two opposite sides of the heat exchange cavity.

The gearbox oil rapid heating system is simple in structure, the oil temperature of the gearbox oil pan is rapidly increased by fully utilizing the self condition of the whole vehicle, and extra energy consumption is not increased; along with the operation of the gearbox, the oil temperature of the gearbox can quickly reach the optimal state, the abrasion of parts of the gearbox is reduced, the service life of the gearbox is prolonged, and the oil consumption of the whole vehicle is reduced; the use is simple and convenient, the TCU automatically controls the opening or closing of the electromagnetic control valve, and manual operation is not needed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a first embodiment of a transmission sump in an embodiment of the present invention;

FIG. 3 is a schematic structural view of a first embodiment of a heat exchange housing in an embodiment of the utility model;

FIG. 4 is a schematic view showing a connection structure of an exhaust pipe and an intake pipe of an engine in the embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a second embodiment of a transmission sump in an embodiment of the present invention;

fig. 6 is a schematic structural view of a second embodiment of the heat exchange shell in the embodiment of the utility model.

Detailed Description

The quick heating system of the gearbox oil is shown in figure 1 and comprises a gearbox oil bottom shell assembly 1, an engine exhaust pipe 2 and a branch pipeline.

As shown in fig. 2 and 3, the transmission oil pan assembly 1 includes a transmission oil pan 11 and a heat exchange housing 13, and an annular connection platform 12 is disposed on an outer side wall of the transmission oil pan 11 and is used for being fixed and hermetically connected with the heat exchange housing 13. After the heat exchange shell 13 and the connecting platform 12 are fixedly connected through bolts, a closed heat exchange cavity 14 is formed in the gearbox oil pan 11, the connecting platform 12 and the heat exchange shell 13. The heat exchange cavity 14 is communicated with the engine exhaust pipe 2 through a branch pipeline, and the heat exchange cavity 14 is sealed, so that the utilization rate of exhaust heat of an engine can be improved, and the oil temperature of the gearbox oil pan 11 can be quickly improved. After the vehicle is started, the oil temperature of the gearbox is quickly raised to the optimal working temperature, so that the internal friction of the gearbox is reduced, the oil consumption of the whole vehicle is reduced, and the emission is reduced.

Air flow guiding structure 15 is provided in heat exchange chamber 14 for guiding air flow in heat exchange chamber 14, so as to maximize heat utilization. As shown in fig. 3 and 5, the airflow guide structure 15 is a labyrinth grating. The labyrinth grating may be cast integrally with the transmission sump 11, as shown in fig. 5; it may also be cast integrally with the heat exchange housing 13 as shown in fig. 3.

Heat exchange shell 13 has an inner cavity therein, which forms heat exchange chamber 14, i.e. as shown in fig. 3; as shown in fig. 5 and 6, the heat exchange housing 13 may be only of a flat plate type structure, and a cavity inside the connection stage 12 forms a heat exchange cavity 14, and the heat exchange housing 13 closes the cavity.

The air flow guide structure 15 may be a heat pipe or the like. When the air flow guide structure 15 is a radiating pipe, the radiating pipe is fixed on the outer wall of the transmission case oil pan 11.

The branch pipeline consists of an air inlet pipe 5 and an air outlet pipe 7, and the air inlet pipe 5 and the air outlet pipe 7 are respectively positioned at two opposite sides of the heat exchange cavity 14; wherein, the air inlet pipe 5, the heat exchange cavity 14 and the air outlet pipe 7 are communicated in sequence; in the air flow direction of the engine exhaust pipe 2, the air inlet pipe 5 is positioned on the upstream side of the air outlet pipe 7; therefore, tail gas in the engine exhaust pipe 2 enters the heat exchange cavity 14 through the air inlet pipe 5, and then flows back into the engine exhaust pipe 2 through the air outlet pipe 7 and is exhausted.

In order to ensure that the branch line has a sufficient flow rate, as shown in fig. 4, the intake pipe 5 extends into the engine exhaust pipe 2, and the end of the intake pipe 5 located in the engine exhaust pipe 2 is chamfered to form an air flow guide surface for guiding the air flow into the intake pipe 5; furthermore, the included angle between the air inlet pipe 5 and the direction of the air flow in the engine exhaust pipe 2 is smaller than 90 degrees, and the air flow is guided to enter the air inlet pipe 5 by fully utilizing the flowing trend of the air flow.

Preferably, the connection position of the air inlet pipe 5 and the engine exhaust pipe 2 is positioned behind the engine supercharger, and the connection position of the air outlet pipe 7 and the engine exhaust pipe 2 is positioned in front of the exhaust gas post-treatment box 3.

An electromagnetic control valve 4 is arranged on the air inlet pipe 5 to control the flow of the led-out tail gas; and a one-way valve is arranged on the air outlet pipe 7 to prevent the tail gas from flowing backwards.

The TCU control module receives an oil temperature signal of the gearbox and a rotating speed signal of the engine and controls the switch of the electromagnetic control valve 4 through the oil temperature signal and the rotating speed signal. Specifically, the opening condition of the electromagnetic control valve 4 is that the engine rotating speed signal value is greater than or equal to the engine idling value, and the gearbox oil temperature is less than a set temperature value, when the two conditions are met simultaneously, the electromagnetic control valve 4 is controlled to be opened, otherwise, the electromagnetic control valve is closed.

When the engine speed signal value is greater than or equal to the engine idling value, the normal starting operation of the engine is indicated; the idle speed value of the engine is the lowest stable speed after the engine is started and operated, and the idle speed values of different engine models can be different and can be calibrated according to engine parameters.

The optimal working oil temperature of the gearbox is 80-100 ℃, and the gearbox can be opened when the oil temperature is lower than 80 ℃, namely the temperature value is set to be 80 ℃.

When the engine is started, the oil temperature of the gearbox is lower than a set value, and the rotating speed of the engine is higher than the idle speed, the electromagnetic control valve 4 is opened, and the exhaust gas of the engine flows through the gearbox oil bottom shell assembly 1 to heat the gearbox oil; when the gearbox oil reaches the set temperature value, the electromagnetic control valve 4 is closed, and the tail gas does not flow through the gearbox oil bottom shell assembly 1.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A quick heating system of gearbox oil which characterized in that: the device comprises an engine exhaust pipe (2), a gearbox oil bottom shell assembly (1) and a branch pipeline;

the gearbox oil pan assembly (1) comprises a gearbox oil pan (11) and a heat exchange shell (13), wherein a closed heat exchange cavity (14) is enclosed by the heat exchange shell (13) and the outer wall of the gearbox oil pan (11);

the branch pipeline comprises an air inlet pipe (5) and an air outlet pipe (7), the air inlet end of the air inlet pipe (5) is communicated with the engine exhaust pipe (2), and the air outlet end is communicated with the heat exchange cavity (14); the air inlet end of the air outlet pipe (7) is communicated with the heat exchange cavity (14), and the air outlet end is communicated with the engine exhaust pipe (2);

an electromagnetic control valve (4) is arranged on the air inlet pipe (5), and a one-way valve is arranged on the air outlet pipe (7); after the electromagnetic control valve (4) is opened, tail gas in the engine exhaust pipe (2) flows through the air inlet pipe (5), the heat exchange cavity (14) and the air outlet pipe (7) in sequence and then flows into the engine exhaust pipe (2) again.

2. A transmission oil rapid heating system according to claim 1, characterized in that: an airflow guide structure (15) is arranged in the heat exchange cavity (14) and used for guiding airflow entering the heat exchange cavity (14) to flow.

3. A transmission oil rapid heating system according to claim 2, characterized in that: the airflow guiding structure (15) is a labyrinth grating, and the labyrinth grating is arranged on the heat exchange shell (13) or the outer wall of the gearbox oil pan (11).

4. A transmission oil rapid heating system according to claim 2, characterized in that: the air flow guide structure (15) is a radiating pipe, and the radiating pipe is fixed on the outer wall of the gearbox oil pan (11).

5. A transmission oil rapid heating system according to claim 1, characterized in that: be equipped with on the outer wall of gearbox oil pan (11) and connect platform (12), connect platform (12) and be the annular, heat transfer casing (13) and connection platform (12) fixed sealing connection.

6. A rapid heating system for transmission oil according to claim 5, characterized in that: the inner side of the connecting table (12) forms the heat exchange cavity (14), and the heat exchange shell (13) is of a flat plate type structure.

7. A rapid heating system for transmission oil according to claim 5, characterized in that: the heat exchange cavity (14) is formed inside the heat exchange shell (13), and the opening of the heat exchange cavity (14) faces the outer wall of the gearbox oil pan (11).

8. A transmission oil rapid heating system according to claim 1, characterized in that: the air inlet end of the air inlet pipe (5) extends into the exhaust pipe (2) of the engine and is provided with an air flow guide surface for guiding air flow into the air inlet pipe (5).

9. A transmission oil rapid heating system according to claim 8, characterized in that: the included angle between the air inlet pipe (5) and the direction of air flow in the engine exhaust pipe (2) is smaller than 90 degrees.

10. A transmission oil rapid heating system according to claim 1, characterized in that: the air inlet pipe (5) and the air outlet pipe (7) are respectively positioned at two opposite sides of the heat exchange cavity (14).