Four-wheel-drive commercial vehicle control system

Abstract

The utility model provides a four-wheel-drive commercial vehicle control system, which relates to the technical field of automobile driving and comprises an air source, an electromagnetic air valve I, an electromagnetic air valve II, a driving mode switching air cylinder and a gear switching air cylinder, the output end of the electromagnetic air valve I is connected with a four-wheel-drive mode control interface of the driving mode switching air cylinder through a first air path, and the output end of the electromagnetic air valve II is connected with a four-wheel-drive mode control interface of the gear switching air cylinder through a second air path. The output end of the electromagnetic gas valve I is connected with a low-speed gear control interface of the gear switching cylinder through a second gas path; the output end of the second electromagnetic gas valve is connected with a two-drive mode control interface of the drive mode switching air cylinder through a third gas path, and the output end of the second electromagnetic gas valve is connected with a high-speed gear control interface of the gear switching air cylinder through a fourth gas path. The air source is connected with the input end of the first electromagnetic air valve and the input end of the second electromagnetic air valve. According to the utility model, a user can climb and escape in a four-wheel-drive mode under complex road conditions and can use a two-wheel-drive mode under normal road conditions, so that the purposes of energy conservation and high efficiency are achieved.

Description

Technical Field

[0001] This utility model relates to the field of automotive drive technology, and in particular to a four-wheel drive commercial vehicle control system. Background Technology

[0002] Four-wheel drive commercial vehicles, with their excellent climbing and off-road capabilities, are better suited for complex road conditions. To better meet these needs, high-horsepower engines have become widely used. This necessitates a suitable control system. Four-wheel drive commercial vehicle engines have high torque; when driving in low gear in two-wheel drive mode, the transfer case output torque will significantly exceed the allowable input torque of the rear drive axle. This causes the rear axle drive gears to be subjected to excessive stress, potentially leading to vehicle damage or even a serious accident. Currently, four-wheel drive commercial vehicle control systems use four solenoid valves to control four-wheel drive, two-wheel drive, high-speed, and low-speed functions respectively, which is cumbersome to operate and prone to errors. Summary of the Invention

[0003] This utility model provides a four-wheel drive commercial vehicle control system to solve the problem that the rear axle drive gear is subjected to excessive force in the two-wheel drive mode of the existing four-wheel drive system, and to meet the high torque requirements of four-wheel drive vehicles for climbing and getting out of trouble, while also achieving the goals of simple operation, safety and reliability, energy saving and emission reduction.

[0004] To solve the technical problem, the present invention adopts the following technical solution:

[0005] A four-wheel drive commercial vehicle control system includes an air source, a first electromagnetic air valve, a second electromagnetic air valve, a drive mode switching cylinder, and a gear switching cylinder. The output end of the first electromagnetic air valve is connected to the four-wheel drive mode control interface of the drive mode switching cylinder through a first air path, and the output end of the first electromagnetic air valve is connected to the low-speed gear control interface of the gear switching cylinder through a second air path.

[0006] The output of the second solenoid valve is connected to the second drive mode control interface of the drive mode switching cylinder through the third air path, and the output of the second solenoid valve is connected to the high-speed gear control interface of the gear switching cylinder through the fourth air path.

[0007] The air source is connected to the input terminals of solenoid valve one and solenoid valve two, respectively.

[0008] Furthermore, when the control solenoid valve is turned on, the air pressure pushes the drive mode switching cylinder to switch to four-wheel drive function, and at the same time the air pressure pushes the gear switching cylinder to switch to low speed function.

[0009] Furthermore, when the control solenoid valve is turned on, the air pressure pushes the drive mode switching cylinder to switch to the second drive function, and the air pressure simultaneously pushes the gear switching cylinder to switch to the high-speed function.

[0010] Furthermore, in two-wheel drive mode, there is no low-speed function.

[0011] The beneficial effects of this utility model are as follows:

[0012] This invention uses one solenoid valve to control four-wheel drive and low speed, and another solenoid valve to control two-wheel drive and high speed. The four-wheel drive function is bound to the low-speed function, and the two-wheel drive function is bound to the high-speed function. This simplifies the four independent control valves required in the traditional four-wheel drive system to two, making operation simple, safe, and reliable, and reducing the probability of misoperation. By binding the two-wheel drive function to the high-speed function, the risk of overloading the rear axle gear caused by driving in low gear in two-wheel drive is eliminated. This invention can meet the needs of users to use four-wheel drive mode for climbing and getting out of trouble in complex road conditions, and use two-wheel drive mode in normal road conditions to achieve energy saving and high efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the switching system of this utility model;

[0014] Figure 2 This is a schematic diagram of the installation position of this utility model.

[0015] In the diagram: 1. Air source, 2. Solenoid valve one, 3. Solenoid valve two, 4. Drive mode switching cylinder, 4-1. Four-wheel drive mode control interface, 4-2. Two-wheel drive mode control interface, 5. Gear switching cylinder, 5-1. Low gear control interface, 5-2. High gear control interface, 6. First air path, 7. Second air path, 8. Third air path, 9. Fourth air path. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0017] refer to Figures 1 to 2 A four-wheel drive commercial vehicle control system includes an air source 1, a first electromagnetic valve 2, a second electromagnetic valve 3, a drive mode switching cylinder 4, and a gear switching cylinder 5. The output end of the first electromagnetic valve 2 is connected to the four-wheel drive mode control interface 4-1 of the drive mode switching cylinder 4 through a first air passage 6. The output end of the first electromagnetic valve 2 is connected to the low-speed gear control interface 5-1 of the gear switching cylinder 5 through a second air passage 7.

[0018] The output end of the second electromagnetic valve 3 is connected to the second drive mode control interface 4-2 of the drive mode switching cylinder 4 through the third air passage 8, and the output end of the second electromagnetic valve 3 is connected to the high speed control interface 5-2 of the gear switching cylinder 5 through the fourth air passage 9.

[0019] Air source 1 is connected to the input terminal of solenoid valve 2 and the input terminal of solenoid valve 3 respectively.

[0020] Furthermore, when the control solenoid valve 2 is turned on, the air pressure pushes the drive mode switching cylinder 4 to switch to four-wheel drive function, and the air pressure simultaneously pushes the gear switching cylinder 5 to switch to low speed function.

[0021] Furthermore, when the control solenoid valve 3 is turned on, the air pressure pushes the drive mode switching cylinder 4 to switch to the two-drive function, and the air pressure simultaneously pushes the gear switching cylinder 5 to switch to the high-speed function.

[0022] Furthermore, in two-wheel drive mode, there is no low-speed function.

[0023] The drive mode switching cylinder and gear switching cylinder described in this utility model are installed side by side at the front of the vehicle and synchronized by a mechanical interlocking device.

[0024] Based on the above description, any simple changes and modifications made by those skilled in the art without departing from the scope of the present invention's technical concept should fall within the protection scope of the present invention.

Claims

1. A control system for a four-wheel drive commercial vehicle, characterized in that, The air source, the electromagnetic air valve one, the electromagnetic air valve two, the driving mode switching cylinder and the gear switching cylinder are connected. The output end of the electromagnetic air valve one is connected with the four-wheel drive mode control interface of the driving mode switching cylinder through the first air path. The output end of the electromagnetic air valve two is connected with the two-wheel drive mode control interface of the driving mode switching cylinder through the third air path.

2. The control system for a four-wheel drive commercial vehicle according to claim 1, wherein The input end of the electromagnetic air valve one and the input end of the electromagnetic air valve two are connected with the air source.

3. The control system for a four-wheel drive commercial vehicle of claim 1, wherein, When the electromagnetic air valve one is controlled to be connected, the air pressure pushes the driving mode switching cylinder to switch to the four-wheel drive function, and the air pressure simultaneously pushes the gear switching cylinder to switch to the low-speed function.

4. The control system for a four-wheel drive commercial vehicle of claim 3, wherein When the electromagnetic air valve two is controlled to be connected, the air pressure pushes the driving mode switching cylinder to switch to the two-wheel drive function, and the air pressure simultaneously pushes the gear switching cylinder to switch to the high-speed function. In the two-wheel drive function mode, there is no low-speed function.

Images