KR19980066730U - Vehicle exhaust brake system - Google Patents

Abstract

The present invention relates to an exhaust brake device of a vehicle in which an exhaust brake switch is mounted on a gear shift lever to rapidly operate the exhaust brake in an emergency to obtain a strong braking force. The exhaust brake device of the present invention stores compressed air and The first air cylinder 14 and the second air cylinder 20 into which the air in the air tank 26 flows in accordance with the opening of the air tank 26, the magnetic valve 28, and the first air cylinder. And a first link 16 and a second link 22 operatively connected to the 14 and second air cylinders 20, respectively, and to open and close by the first link 16 to selectively block intake air. By sending an electrical signal to the intake shutoff valve 18, the exhaust shutoff valve 24 which is opened and closed by the second link 22 to selectively block the exhaust gas, and the magnetic valve 28 When converting speed It consists of the exhaust brake switch 34 attached to the gear shift lever 30 to be used.

Description

Vehicle exhaust brake system

The present invention relates to an exhaust brake device of a vehicle, and more particularly, to an exhaust brake device of a vehicle that can obtain a strong braking force by quickly operating the exhaust brake in an emergency situation by mounting the exhaust brake switch to the gear shift lever. will be.

In general, the brakes used for braking in automobiles can be divided into the main brake wheel brake for reducing the driving speed or temporarily stopping while driving, and the parking brake for long parking. The brakes can be further classified into drum-type and disc-type brakes according to the form of friction. In addition, as an indirect method of obtaining braking force, there are an engine brake and an exhaust brake that reduce the vehicle speed by shifting to a lower stage than the current driving stage.

Exhaust brakes are commonly used in large vehicles using four-cycle diesel engines, and are used for downhill roads by assisting wheel brakes for braking, and are also used for deceleration during high-speed driving. The exhaust brake is provided with a valve in the middle of the exhaust pipe to open and close the valve to operate the engine as a compressor to obtain braking force. During operation it is necessary to stop the supply of fuel to prevent combustion in the cylinder.

In the conventional exhaust brake system having such a function, when a sudden load occurs while a large truck is loaded with a large amount of cargo or a large number of passengers are on the bus, the driver brakes the exhaust brake at the same time. In this case, since the exhaust brake switch for activating the exhaust brake is installed on the instrument panel, there is a problem that it is very difficult to operate it in an emergency.

The present invention devised to solve the above problems is to provide an exhaust brake device of a vehicle that can be equipped with an exhaust brake switch on the gear shift lever to operate when an emergency situation occurs to obtain a braking effect. .

1 is a block diagram showing an exhaust brake device of a vehicle according to the present invention

[Explanation of symbols on the main parts of the drawings]

2: cylinder block 4: piston

6: intake pipe 10: exhaust pipe

14, 20: 1st, 2nd air cylinder 16, 22: 1st, 2nd link

18, 24: intake shutoff valve 26: air tank

28: magnetic valve 30: gear shift lever

32: Handle 34: Exhaust brake switch

The object of the present invention described above is an air tank that stores compressed air, a first air cylinder and a second air cylinder into which air in the air tank flows in accordance with the opening of the magnetic valve, and a first air cylinder and a second air cylinder. A first link and a second link operatively connected to each other, an intake shutoff valve that is opened and closed by the first link and selectively blocks intake air sucked through the intake pipe, and is opened and closed by the second link and discharged through the exhaust pipe. In the vehicle exhaust brake device comprising an exhaust shutoff valve for selectively blocking the exhaust gas, an exhaust brake switch mounted on a gear shift lever used for speed conversion by sending an electrical signal to the magnetic valve to be turned on / off. It is achieved by the exhaust brake device of a vehicle comprising a.

According to the present invention, in an emergency situation, the exhaust brake can be quickly operated to obtain a strong braking force, and the braking distance can be shortened to prevent a front collision accident.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the vehicle exhaust brake apparatus according to a preferred embodiment of the present invention.

1 is a block diagram showing an exhaust brake device of a vehicle according to the present invention, the components of the engine are schematically shown.

First, a piston 4 which slides up and down along its inner wall is mounted inside the cylinder formed in the cylinder block 2 of the diesel engine, and intake air in the intake pipe 6 is introduced at the upper part of the piston 4. An intake valve 8 and an exhaust valve 12 for sending the combusted exhaust gas to the exhaust pipe 10.

In such a diesel engine, an exhaust brake device that obtains a strong braking force by operating an engine brake in an emergency is usually an air tank (2) in accordance with the opening of the air tank (26) storing the compressed air and the magnetic valve (28). The first air cylinder 14 and the second air cylinder 20 into which air in 26 is introduced, and the first link 16 operatively connected to the first air cylinder 14 and the second air cylinder 20, respectively. ) And a second link 22, an intake shutoff valve 18 for selectively opening and closing the intake air introduced through the intake pipe 6 by being opened and closed by the first link 16, and the second link 22. It is composed of an exhaust shut-off valve 24 for opening and closing by selectively blocking the exhaust gas discharged through the exhaust pipe (10).

In the exhaust brake device of such a configuration, by supplying a current to the magnetic valve 28 in an emergency situation and operating it, the exhaust gas of the present invention for closing the intake shutoff valve 18 and the exhaust shutoff valve 24 to obtain braking force. The brake switch 34 is attached to the gear shift lever 30. That is, a handle 32 is formed on the gear shift lever 30 for shifting the gear so as to change the running speed of the vehicle, and the exhaust brake switch 34 is provided on the handle 32.

Therefore, when the driver operates the exhaust brake switch 34 in an emergency situation, the electricity of the battery is transmitted to the magnetic valve 28 so that the air in the air tank 26 is supplied to the first air cylinder 14 and the second air. It is supplied to the cylinder 20. The compressed air supplied in this way rotates the intake shutoff valve 18 and the exhaust shutoff valve 24 by rotating the first link 16 and the second link 22, respectively, so that the intake pipe 6 and the exhaust pipe 10 are rotated. At the same time. Accordingly, the air flowing into the combustion chamber is blocked and at the same time the exhaust gas discharged through the exhaust pipe is blocked, thereby obtaining a strong braking force.

According to the present invention described above, it is possible to obtain a strong braking force by operating the exhaust brake quickly in an emergency situation and to provide an effect of preventing the front collision by reducing the braking distance.

Claims (1)

An air tank (26) storing compressed air, a first air cylinder (14) and a second air cylinder (20) into which air in the air tank (26) flows in accordance with the opening of the magnetic valve (28); A first link 16 and a second link 22 operatively connected to the first air cylinder 14 and the second air cylinder 20, respectively, and opened and closed by the first link 16. (6) an intake shutoff valve 18 for selectively blocking intake air sucked through and an exhaust shutoff valve for selectively blocking the exhaust gas opened and closed by the second link 22 and discharged through the exhaust pipe 10; In the exhaust brake device for a vehicle constituted by (24), An exhaust brake device for a vehicle, comprising an exhaust brake switch 34 mounted on a gear shift lever 30 used for speed conversion by sending an electrical signal to the magnetic valve 28 to be turned on and off. .