The exhaust brake device is composed of an exhaust brake button valve, an exhaust gas working cylinder, an exhaust brake butterfly valve and an oil stopping cylinder. Exhaust brake easy to operate, simple and effective. In the snow and slippery muddy road, using the exhaust brake, can reduce the sideslip; in the long downhill, using the exhaust brake can reduce the number of braking, brake drum to reduce temperature rise, improve the reliability of the brake. When the exhaust brake is used, the oil supply of the engine can be reduced, the oil can be cut off, and the fuel can be saved.
The exhaust brake is used to close the engine exhaust passage, the piston engine in the exhaust stroke, by the gas counter pressure to stop the operation of the engine and braking effect, so as to achieve the purpose of speed control. The driver when using the exhaust brake, driving the exhaust brake valve button on the bottom of the left chamber below the foot, the power button to open the gas valve channel, the compressed air enters the exhaust cylinder.
The work of the piston cylinder gas pressure, compressed air to drive the push rod, the push rod drives the exhaust brake valve, butterfly valve to the exhaust pipe blocked rotation. At the same time the compressed air in the button valve also open to stop the oil cylinder, stop oil cylinder piston in the role of compressed air movement, push rod through linkage mechanism drive governor handle, make oil stop supply.
Because the exhaust pipe blocked, stopping the engine exhaust, fuel supply interruption, the pressure in the exhaust pipe to 0.3 ~ 0.4MPa. The exhaust stroke of the engine piston in the work must overcome this pressure, thus greatly increasing the engine braking power. Therefore, when using the exhaust brake, the engine piston in the engine exhaust stroke, the piston by the gas counter pressure to the transmission line through the crankshaft and the wheels, increase the rotational resistance of the wheels, reducing the speed.
When the exhaust manifold pressure reaches a certain value, the valve spring will overcome the resistance, open the exhaust valve, the compressed air enters the cylinder, discharged from the air inlet pipe, to ensure that the exhaust manifold pressure will not continue to rise. At this point the engine will issue a special sound, the sound of the engine harmless. Some drivers think the exhaust brake harmful to the engine, this view is no scientific basis.
When the exhaust brake is used, because the fuel supply is stopped, the engine is essentially changed into an air compressor to consume energy to control the vehicle speed. Although stop engine fuel supply, but engine lubrication, cooling system in normal work, just by the output energy, into energy consumption, harmless to the engine. When operating, attention should be paid to the exhaust brake parts of the intact, if damaged, should be repaired or replaced.
In the next big slope or downhill driving, the transmission should choose the appropriate gear, the general selection of 5, 6 stalls, which can prevent engine speed is too high engine damage failure. When using the exhaust brake, not neutral, does not allow the separation of the clutch, otherwise the exhaust brake is invalid, traffic accidents will occur.
Baotou North Benz parts exhaust brake in use prone to the following failure:
(1) exhaust brake rod cap can not be returned, button valve can not step on. Because the ejector rod does not return position, the exhaust gas working cylinder enters the air to cause the engine to work badly. This failure is mainly due to the top of the valve rod and the button shell dirt stuck, remove the button valve cleaning, can be eliminated.
(2) stepping on the north of Baotou Benz parts exhaust brake button valve, the top rod cap and the valve body between a large number of gas discharge, due to leakage to make the exhaust gas cylinder intake is insufficient, exhaust brake does not work. This is mainly the button valve O shaped ring damage, for sealing ring can be.
(3) exhaust cylinder does not return position, resulting in exhaust brake butterfly valve core part of the role, plug the exhaust pipe, so that the engine is not working. The main reason for this fault is the exhaust cylinder cylinder lubrication bad, stuck. Description waste gas cylinder has dirt. Remove the exhaust gas in the cylinder, piston cylinder, coated with petroleum jelly can be ruled out, the valve shaft fracture will appear this fault.
(4) exhaust cylinder leaks, exhaust brake does not work. Mainly waste gas cylinder piston cylinder damage, replacement can be.
(5) stepping button valve, exhaust cylinder does not work. Mainly pipeline rupture leakage, button valve damage. If button valve is damaged, replace it.
(6) stepping button valve, engine work smoke, oil does not reduce. This is mainly stop oil cylinder pipeline or linkage damage, stop oil cylinder damage. Maintenance pipeline and linkage. Stop oil cylinder does not work should be replaced.
(7) engine work is not normal, poor acceleration performance, high fuel consumption. This fault is the main reaction to the exhaust brake exhaust brake butterfly valve translocation, Baotou North Benz parts exhaust pipe blocked part; or exhaust cylinder and valve connection disengaged, butterfly valve transposition.
Maintenance linkage, so that the engine works, the butterfly valve in full open position.
The use of exhaust brake, can reduce the number of driving brake, reduce brake drum temperature rise, can improve the reliability of the brake, save oil, please the majority of drivers according to road conditions, flexible use.