CN2554059Y - Exhause brake electric controller of diesel vehicle - Google Patents

Abstract

The utility model relates to an automobile brake system, and provides an electric exhaust brake controller for a diesel automobile, which is composed of a cylinder, an exhaust brake butterfly valve, a gas solenoid valve and a control circuit. The exhaust brake butterfly valve is installed on the engine exhaust pipe. At the position, the gas solenoid valve, the cylinder and the exhaust brake butterfly valve are connected sequentially through the compressed air pipeline, and the gas solenoid valve is connected with the control circuit. The utility model adopts electric control, and the driver only needs to press the exhaust brake switch of the control circuit to realize the exhaust brake without stepping on the gas valve, which is convenient and labor-saving.

Description

Diesel Automobile Exhaust Brake Electric Controller

(1) Technical field

The utility model relates to a braking system used by automobiles, in particular to exhaust braking of diesel automobiles, belonging to automobile braking systems

technology field.

(2) Background technology

Most diesel vehicles use the engine as an auxiliary brake, among which the engine exhaust brake is more commonly used, that is, the diesel vehicle is not in neutral when driving, the engine exhaust pipe is closed, the engine is not exhausted, the engine is turned off, and the engine cylinder and piston are used to brake. As a friction pair, the car decelerates to play a braking role. Exhaust brake operating systems of engines are mostly pedal air-controlled, that is, the pedal button valve allows compressed air to pass through, and pushes the cylinder to close the exhaust brake butterfly valve installed at the engine exhaust pipe, so that the engine exhaust pipe is closed. achieve the purpose of braking. During actual use, the driver's foot always presses the button valve firmly and cannot move. Although its force is not large (about 20N), it is necessary to step on the button valve continuously if it is used for a long time (such as the Panshan Highway). This makes the driver feel tired and inconvenient. Therefore, most drivers do not use exhaust braking.

(3) Contents of the invention

The utility model aims at the deficiencies of the prior art, and provides a convenient and labor-saving electric controller for exhaust braking of diesel vehicles

The utility model diesel automobile exhaust brake electric controller is composed of a cylinder, an exhaust brake butterfly valve, a gas solenoid valve and a control circuit. The exhaust brake butterfly valve is installed at the engine exhaust pipe, and the gas solenoid valve, the cylinder and the The brake butterfly valve is connected sequentially through the compressed air pipeline, and the gas solenoid valve is connected with the control circuit.

The control circuit is composed of throttle release exhaust brake normally closed switch, start exhaust brake switch, work relay and starter work relay, throttle release exhaust brake normally closed switch, start exhaust brake switch, work relay and starter The normally closed contact of the machine working relay is connected in series, one normally open contact of the working relay is connected in parallel with the start exhaust brake switch, and the other normally open contact is connected in series with the gas solenoid valve.

The utility model adopts electric control, and the driver only needs to press the exhaust brake switch of the control circuit to realize the exhaust brake without stepping on the gas valve, which is convenient and labor-saving. To release the exhaust brake, the driver only needs to step on the accelerator and pass the switch.

(4) Description of drawings

Fig. 1 is a structural block diagram of the utility model.

Fig. 2 is the utility model control circuit principle.

Among them: 1. Gas solenoid valve 2. Cylinder 3. Engine exhaust pipe 4. Exhaust brake butterfly valve 5. Throttle release exhaust brake normally closed switch 6. Start exhaust brake switch 7. Working relay

(5) Specific implementation methods

Fig. 1 has provided the structural block diagram of the present utility model. The utility model is composed of a gas solenoid valve 1, a cylinder 2, an exhaust brake butterfly valve 4 and a control circuit. The exhaust brake butterfly valve 4 is installed at the engine exhaust pipe 3, the cylinder 2 is connected with the exhaust brake butterfly valve 4, and the gas Solenoid valve 1 is arranged in the compressed air pipeline of cylinder 2 front section and is controlled by control circuit. It can be seen from the schematic diagram of the control circuit in Figure 2 that the +24v power supply releases the exhaust brake normally closed switch 5 through the accelerator (the accelerator is not stepped on, that is, the state of not refueling); and then through the starter working relay (not shown in the figure) The normally closed contact Jq (the starter is not energized); press the start exhaust brake switch 6, the working relay 7 is energized to work, and is self-locked through its normally open contact Jcl to maintain the energized working state. Its normally open contact Jc2 is closed, and the gas solenoid valve 1 is energized. The compressed air passes through the gas solenoid valve 1 to the cylinder 2, pushes the exhaust brake butterfly valve 4, closes the engine exhaust pipe 3, turns off the engine, and implements exhaust brake. Release the exhaust brake when the car is running, you only need to step on the accelerator (i.e. refueling state), the accelerator releases the exhaust brake normally closed switch 5, and the working relay 7 is powered off, and its normally open contact Jc2 is disconnected. The gas solenoid valve 1 is powered off, the compressed air does not pass through the cylinder 2, and the exhaust brake is released. Release the exhaust brake when the car is stationary, the +24v power supply releases the exhaust brake normally closed switch 5 through the accelerator (the accelerator is not stepped on, that is, the state without refueling), the car starter is energized to start, and the starter working relay is energized , its normally closed contact Jq is disconnected, the working relay 7 is powered off, its normally open contact Jc2 is disconnected, the gas solenoid valve 1 is powered off, the compressed air does not pass through the cylinder 2, and the exhaust brake is released.

Claims (2)

1. An electric controller for exhaust braking of a diesel vehicle, which is composed of a cylinder, an exhaust braking butterfly valve, a gas solenoid valve and a control circuit. It is characterized in that: the exhaust braking butterfly valve is installed at the engine exhaust pipe, and the gas electromagnetic The valve, the cylinder and the exhaust brake butterfly valve are connected sequentially through the compressed air pipeline, and the gas solenoid valve is connected with the control circuit. 2. The diesel vehicle exhaust brake electric controller according to claim 1, characterized in that: the control circuit is composed of the throttle release exhaust brake normally closed switch, start exhaust brake switch, working relay and starter Composed of working relays, throttle release exhaust brake normally closed switch, start exhaust brake switch, work relay and starter work relay normally closed contacts are connected in series, one normally open contact of work relay is connected with start exhaust brake switch The other normally open contact is connected in series with the gas solenoid valve.

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