The Yuejin C500, which was transferred to the plateau supporting the SAIC Power H series, carried out the plateau experiment in Golmud

Located in the western part of Qinghai Province, the city of Golmud is 2800m above sea level. It is the starting point of the Qinghai-Tibet Railway and the important node of the Qinghai-Tibet Highway, the busiest road to Tibet. The Yuejin C500 supporting the SAIC-powered H series was selected for the altitude test here, and the highest test altitude of this plateau experiment is close to 5000 meters.

SAIC Leap Forward C500

So why do you need a plateau experiment?

Because the air pressure in the plateau is low and the air is thin, as the altitude increases, the oxygen content of the air decreases. Therefore, the amount of fuel required for combustion is different from that of the plain. The engine ECU must be able to recognize the plateau atmospheric pressure and correct the intake air amount.

The key points of the system assessment in the plateau area are: adjustment of the height correction factor, oil cut correction, cold start, hot start and warm start, hot idle speed, mixed gas pre-conditioning, drivability, knock control, postponed at high load The ignition advance angle adjusts the exhaust temperature and the catalyst temperature, and the canister control.

Driving performance calibration

The test car is driven in a high altitude environment. During different speeds and gradients, the parameters of the electronic control system are adjusted according to the actual driving conditions of the vehicle, so that the vehicle can meet the driving performance of various working conditions.

Turbocharger protection calibration

Test the turbocharger temperature at different altitudes and driving, and adjust the fuel injection to control the turbocharger to cause excessive temperature in the case of thin air.

Smoke limit calibration

In the road sections and uphill conditions at different altitudes, the semi-slope start, high-grade low-speed climbing, shifting full throttle acceleration driving process, test engine emissions, modify the fuel injection advance angle, and control the emission smoke.

Engine startability calibration

Every day at the altitude of 2700m, the temperature of 9 ° C to 15 ° C of Golmud, the engine cold start inspection and commissioning.

Shangchai diesel engine

Plateau experiments are essential for engine performance and vehicle safety. Although the altitude test is not a small cost, we are duty-bound for the safety and benefit of users.

Reading volume: Source: on the wood of the market: Zebian

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