SINOTRUCK braking system Exhaust brake valve WG9725542041

Description

Introduction to the SINOTRUCK braking system EVB Exhaust brake valve WG9725542041:

The Exhaust brake valve WG9725542041 is also known as an exhaust butterfly valve or EVB brake valve. It is a device installed on the exhaust manifold of heavy truck engine parts, mainly serving an auxiliary function. By controlling the exhaust valve to generate back pressure, it assists the vehicle’s braking system, reduces the wear of the braking system (brake discs, brake pads), and extends their service life.

Working principle of the Exhaust brake valve WG9725542041:

The exhaust brake valve WG9725542041 is installed on the exhaust valve of the engine. When the butterfly valve is open, the cross-sectional area of the exhaust pipe is the largest, resulting in low exhaust resistance and normal engine exhaust. The vehicle is in a normal driving state. When the butterfly valve is closed, the air in the exhaust pipe is compressed, forming back pressure. The back pressure acts on the engine piston, increasing the resistance of the piston’s downward movement and forcing the engine to reduce its rotational speed, thereby achieving the braking effect.

Application scenarios for the exhaust brake valve WG9725542041:

• Long downhill sections: Use the exhaust brake valve to assist braking, reducing the frequent use of brakes and avoiding brake pads from overheating and failure.
• Full load or overloading: Heavy truck have relatively large inertia, and exhaust braking can share part of the braking pressure, enhancing driving safety.
• Mountainous areas or multi-turn roads: Combined with the service brakes, it can improve the controllability of the heavy truck.

Advantages and Disadvantages of exhaust brake valve WG9725542041:

1. The mechanical structure of the exhaust butterfly valve is simple in design, easy to process, and has low maintenance requirements, resulting in a high cost-performance ratio.
2. It has strong versatility and can be applied to different heavy truck models, with low manufacturing costs.
3. It can be directly installed on the exhaust pipe without significant modification to the original vehicle system.
4. It reduces the frequency of brake pad usage and extends the lifespan of the brake pads.

Meanwhile, the drawbacks are also quite obvious. It can only provide moderate braking force and the braking effect is average. If the exhaust system leaks air, the braking performance will drop significantly. The icing caused by cold regions will also reduce the braking effect. It can only play an auxiliary role and is effective only under specific circumstances, such as when heavy trucks are going downhill.

Fault and Maintenance of Heavy Truck exhaust brake valve WG9725542041:

The general cause is leakage. If the exhaust butterfly valve leaks, the braking effect will deteriorate. Besides, if the braking deceleration effect is slow, it may also be due to the damage of the exhaust butterfly valve. At the same time, if there is abnormal noise from the engine during driving, it may be caused by excessive carbon deposits or impurities in the exhaust system. It is necessary to promptly clean the carbon deposits and impurities in the exhaust system.

• Regularly Check Sealing Performance: Check the exhaust pipe interface and butterfly valve sealing surface every 10,000 kilometers or every half a year to ensure no leakage.
• Clean Carbon Deposits: Use a dedicated cleaning agent to clean carbon deposits on the exhaust manifold and butterfly valve surface every 20,000 kilometers to avoid sticking.
• Function Test: Start the exhaust braking function monthly and observe if the butterfly valve opens and closes sensitively. Listen for any abnormal noises.