Holset® e power booster The Cummins Holset® e supercharger is used on this engine to demonstrate excellent reliability and performance in tests.
After plateau high temperature test - still reliable under severe conditions
According to the China Truck Network reporter, the entire experiment started from Chengdu, Sichuan Province, passing Dunhuang, Gansu Province, Turpan, Xinjiang, Golmud, Qinghai, and Lhasa, Tibet, and eventually returned to Chengdu. The entire journey lasted nearly 10,000 kilometers and lasted 42 days. The working conditions during the test were particularly harsh: Under the high temperature test, the surface temperature of the Huoyan Mountain in Turpan was close to 65°C; in the plateau experiment, the highest altitude was even reached 5,231 metres (Danggula Pass). Holset® e supercharger operated steadily throughout the entire test without failure.
Plateau Torque Increases Nearly 10% - Goods Pull Far More, Run Faster
China Truck Network reporter learned that, compared with the traditional bypass valve supercharger of the same type, the Holset® e power is nearly 10% higher than that of the conventional bypass valve supercharger. For the whole vehicle, the plateau power is obviously improved, and the cargo is pulled more. The speed is higher.
The altitude of 4781 meters Kunlunshankou engine torque comparison
In the plateau region, as the altitude increases, the air becomes thinner and the engine's intake air volume decreases. The characteristics of the engine plateau calibration is that as long as the smoke level, the exhaust temperature, and the speed of the supercharger exceed the limit value, the oil reduction calibration is required. That is, the torque limit is limited by reducing the fuel injection amount. Therefore, the performance of the engine is affected. Severe index restrictions. The traditional supercharger has a higher temperature in the plateau region, which results in limited engine performance. The Holset® e power-operated supercharger bypass valve is closed to actively compensate the intake air volume, increase the air-fuel ratio of the engine, reduce the exhaust temperature, and greatly increase the engine's altitude capability.
Actively controls the closing of the bypass valve in the plateau application, effectively increasing the intake air volume of the engine
Compared to conventional bypass valve boosters, Holset® e power changes the bypass valve opening from passive gas activation to active electronically controlled regulation. After receiving the electric signal transmitted by the ECU, the drive linkage mechanism pushes the opening of the bypass valve and actively controls the turbocharger's function to achieve a free adjustment of the intake air volume within a certain range to meet different engine speeds and torques. Demand for air intake. The following diagram fully shows that the Holset® e actively controls the opening of the bypass valve, and the bypass valve is fully closed during plateau applications, effectively increasing the intake of the engine.
Comparison of Bypass Valves at Kunlun Yamato Turbocharger at Elevation of 4781m
Tests under harsh conditions such as high temperature plateaus have fully confirmed the excellent quality of the Holset® e power.
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