CN2936862Y - Linkage brake control device for diesel vehicle - Google Patents

Abstract

A linkage brake control device of a diesel vehicle comprises an exhaust brake solenoid valve, an exhaust brake valve, an air circuit and a switch circuit, and is characterized in that a valve of the exhaust brake valve is installed in an engine exhaust pipe, a valve control end of the exhaust brake valve is connected with an air source through the exhaust brake solenoid valve by the air circuit, and a coil of the exhaust brake solenoid valve is connected with a power supply through the switch circuit controlled by a neutral switch (3) and a brake switch (4). The utility model is suitable for a diesel automobile, at the diesel automobile in-process of driving, when the driver steps on brake pedal, stopper and engine exhaust braking simultaneous working, the exhaust braking is relieved when the neutral is hung to the car to made things convenient for the driver to operate, strengthened the automobile braking nature, the security has alleviateed the wearing and tearing of brake shoe simultaneously.

Description

Diesel vehicle linkage brake control device

technical field

The utility model relates to the technical field of automobile braking, in particular to a diesel automobile linkage braking control device.

Background technique

At present, the braking system of automobiles mainly adopts friction brakes. For cars that often drive in mountainous areas, if the braking system is used only to achieve the purpose of stabilizing the vehicle speed when going down a long slope, it may cause the brakes to overheat and reduce the braking efficiency, or even fail completely. Therefore, it is necessary to take auxiliary braking to enhance braking efficiency while the driving braking system is functioning. As an auxiliary braking method, engine exhaust braking has been widely used in the braking system of diesel vehicles.

Usually, the control mode of the engine exhaust brake mainly relies on the driver to toggle the control handle to achieve the purpose of opening the exhaust brake, but this control mode has many inconveniences in practical applications. For example, usually the driver is used to braking by stepping on the brake pedal, and often forgets to toggle the exhaust brake control handle, thereby reducing the utilization rate of the exhaust brake and cannot perform its function well; When driving, if you need to use the exhaust brake, you must frequently toggle the control handle, which brings inconvenience to the driver.

Contents of the invention

The purpose of this utility model is to solve the shortcomings of the above-mentioned background technology, and propose a diesel automobile linkage brake control device that uses the brake pedal to simultaneously control the brake brake and the engine exhaust brake, so as to facilitate the driver to control the exhaust brake. Dynamic control operation, enhance vehicle braking, safety, while reducing the wear and tear of brake shoes.

The purpose of this utility model is achieved through the following technical solutions, a diesel vehicle linkage brake control device, including exhaust brake solenoid valve, exhaust brake valve, gas circuit, switch circuit, characterized in that: The valve of the exhaust brake valve is installed in the exhaust pipe of the engine, the valve control end of the exhaust brake valve is connected with the air source through the exhaust brake electromagnetic valve through the air circuit, and the coil of the exhaust brake electromagnetic valve passes through The switching circuit controlled by the neutral switch 3 and the brake switch 4 is connected to the power supply. When the neutral switch 3 is disconnected and the brake switch 4 is closed, the switch circuit connects the coil of the exhaust brake solenoid valve to the power supply; When the gear switch 3 was closed, the switch circuit disconnected the coil of the exhaust brake solenoid valve from the power supply.

The above switch circuit is composed of a normally closed relay 1, a normally open relay 2, a neutral switch 3, a brake switch 4, an exhaust brake solenoid valve 5 and a DC power supply. The coil L1 of the normally closed relay 1 is connected to the neutral switch 3 After being connected in series between the positive and negative poles of the DC power supply; the coil L2 of the normally open relay 2 is connected in series with the brake switch 4 between the positive and negative poles of the DC power supply; the contacts K1, The contact K2 of the normally open relay and the coil of the exhaust brake solenoid valve 5 are connected in series with each other and connected between the positive and negative poles of the DC power supply.

The utility model is suitable for diesel vehicles. When the driver steps on the brake pedal during the running of the diesel vehicle, the brake and the exhaust brake of the engine work at the same time, and the exhaust brake is released when the vehicle is in neutral, which is convenient for the driver. Operation, enhance vehicle braking, safety, while reducing the wear and tear of brake shoes.

Description of drawings

Fig. 1 is the circuit diagram of the switch circuit of the present invention.

In the figure, 1. Normally closed relay, 2. Normally open relay, 3. Neutral switch, 4. Brake switch, 5. Exhaust brake solenoid valve.

Detailed ways

The utility model comprises an exhaust brake solenoid valve 5, an exhaust brake valve, an air circuit, and a switch circuit. The valve of the exhaust brake valve is installed in the engine exhaust pipe, and the valve control end of the exhaust brake valve It is connected in series with the exhaust brake solenoid valve 5 and the air storage tank (air source) through the air circuit. The coil of the exhaust brake solenoid valve 5 is connected to the power supply through a switch circuit controlled by the neutral switch 3 and the brake switch 4 .

The switch circuit is composed of a normally closed relay 1, a normally open relay 2, a neutral switch 3, a brake switch 4, an exhaust brake solenoid valve 5 and a DC power supply. The DC power supply is a 24V power supply; the coil L1 of the normally closed relay 1 is connected in series with the neutral switch 3 and connected between the positive and negative poles of the DC power supply; the coil L2 of the normally open relay 2 is connected in series with the brake switch 4 Between the positive and negative poles of the DC power supply; the contact K1 of the normally closed relay of the DC power supply, the contact K2 of the normally open relay, and the coil of the exhaust brake solenoid valve 5 are connected in series with each other and then connected between the positive and negative poles of the DC power supply between. The neutral switch 3 is placed in the automobile gear controller, and the brake switch 4 is placed at the automobile brake pedal.

When the diesel automobile gearbox is in the forward gear, the neutral switch 3 is in the off state, and the contact K1 of the normally closed relay 1 is pulled in at this moment. When the driver depresses the brake pedal, the brake switch 4 is closed, and the coil L2 of the normally open relay 2 is energized, so that the contact K2 is closed, and the exhaust brake solenoid valve 5 is energized to act, and the exhaust brake is activated through the air circuit. The valve is closed, the engine exhaust pipe is blocked, the engine speed is reduced, and the exhaust brake starts to work. When the driver puts on the neutral gear, the neutral gear switch 3 is closed, the normally closed relay 1 coil L1 is energized, K1 is disconnected, the exhaust brake electromagnetic valve 5 is de-energized, and the exhaust brake is released.

Although the above-mentioned embodiment has described the utility model in detail, people can also make modifications that do not deviate from its central idea, such as replacing the relay in the switch circuit with other common switch elements, so that it can also achieve the neutral position. When the switch 3 is off and the brake switch 4 is closed, the switch circuit connects the coil of the exhaust brake solenoid valve to the power supply; when the neutral switch 3 is closed, the switch circuit disconnects the coil of the exhaust brake solenoid valve from the power supply. open function. These modifications all belong to the protection scope of the utility model, and the protection scope of the utility model should be determined by the claims.

Claims (2)

1. A linkage brake control device for a diesel vehicle, comprising an exhaust brake solenoid valve, an exhaust brake valve, an air circuit, and a switch circuit, characterized in that: the valve of the exhaust brake valve is installed on the exhaust brake valve of the engine In the trachea, the valve control end of the exhaust brake valve is connected to the air source through the exhaust brake solenoid valve through the air circuit, and the coil of the exhaust brake solenoid valve passes through the neutral switch (3) and the brake switch ( 4) The controlled switch circuit is connected to the power supply. When the neutral switch (3) is disconnected and the brake switch (4) is closed, the switch circuit connects the coil of the exhaust brake solenoid valve with the power supply; when the neutral switch ( 3) When closed, the switch circuit disconnects the coil of the exhaust brake solenoid valve from the power supply. 2. According to claim 1, the linkage brake control device for diesel vehicles is characterized in that the switch circuit consists of a normally closed relay (1), a normally open relay (2), a neutral switch (3), a brake switch (4 ), an exhaust brake solenoid valve (5) and a DC power supply, the coil L1 of the normally closed relay (1) is connected in series with the neutral switch (3) between the positive and negative poles of the DC power supply; the normally open The coil L2 of the relay (2) is connected in series with the brake switch (4) between the positive and negative poles of the DC power supply; the contact K1 of the normally closed relay, the contact K2 of the normally open relay and the exhaust brake of the DC power supply The coils of the electromagnetic valve (5) are connected in series between the positive and negative poles of the DC power supply.

Images