The new product can be adapted to a wide range of products much faster than the retarder.
Release time:
2024-06-07
Engine braking, because it can greatly reduce the wear of the brake and more reliable operation performance, has been more and more recognized by the driver. The principle of general engine braking is to use the compression resistance generated by the compression stroke of the engine, the internal friction force and the intake and exhaust resistance to form a braking effect on the driving wheels to decelerate.
As the world's manufacturer of deceleration systems and valve drive systems for heavy-duty diesel engines, the United States has developed an HPD engine braking system, which fundamentally improves the original engine braking technology and can provide deceleration braking force twice that of traditional compression engine braking when trucks are running at low speeds, increasing the load capacity of 175kg for drivers and reducing the total cost by 3500 euros. In September this year, all can bo will also bring this HPD engine braking system to the Hannover auto show in Germany.
The HPD engine braking system converts a four-stroke engine to a two-stroke engine by closing the intake and exhaust valves. The traditional engine braking system has a process of compressing exhaust and gas circulation every time the cam rotates. The innovative two-stroke technology allows drivers to obtain a good balance between acceleration, deceleration and fuel consumption, and can provide small and medium-displacement diesel and natural gas engines with the same deceleration power as large-displacement engines.
From the test data, the HPD engine braking system is 1.5 times faster than traditional compression braking during normal engine operation, and 2 times faster than compression braking during low-speed engine operation. The system uses a correction cam to transmit a braking torque of 2000Nm when the rotational speed of the 13-liter engine is 1300rmp, and a braking force of 611kW when the rotational speed is 2500rpm. It can be said that HPD engine braking has advantages in braking performance.
The research and development of the HPD engine braking system is to provide higher engine braking performance at low engine speeds, and improve temperature management to match the existing trends of streamlining engine sizes of various car companies, thereby obtaining higher fuel economy And lower total cost. The development of engine braking deceleration performance can greatly reduce the natural deceleration caused by wind resistance, engine, transmission chain and tire resistance.
In addition, all HPD engine braking technology uses standard parts, thus greatly reducing the cost, and because only a small part of the hydraulic deceleration device is used, the driver who purchases the device can quickly return to the original within 6 months. Compared with the ordinary hydraulic deceleration device, it takes two and a half years to return to the original view, which is an advantage.
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