A calibration method for heavy-duty vehicle electronically controlled silicone oil clutch fan

Abstract

The invention discloses a method for calibrating a heavy-duty automobile electronically controlled silicone oil clutch fan. 1. When the engine is under the limit load and the fan is at the limit speed, whether the engine outlet water temperature exceeds the maximum allowable water outlet temperature of the engine design, if so, it needs to be replaced with a higher power Fan; 2. At a constant engine speed and different engine output power, record the corresponding fan speed when the engine outlet water temperature is maintained within the optimum water temperature range; 3. When the vehicle is actually driving, when the engine is under the output power in step 2 , when the water temperature changes between the optimum water temperature ranges, the fan runs at the corresponding speed measured in step 2. Under the premise of ensuring that the engine is not overheated under extreme load conditions, the engine under common operating conditions of the whole vehicle can be maintained within the optimum working water temperature, air temperature and engine oil temperature range, and at the same time, the working speed of the fan is guaranteed to be the lowest, so as to achieve fuel saving and noise reduction. Purpose.

Description

technical field [0001] The invention belongs to the field of automobile heat dissipation, and relates to a method for calibrating a heavy-duty automobile electronically controlled silicon oil clutch fan. Background technique [0002] As an important controllable component of the engine cooling system, the electronically controlled silicon oil clutch fan is the main carrier of the development of automobile thermal management technology. The calibration logic of the electronically controlled silicon oil clutch fan has a huge impact on the performance of the vehicle, especially the fuel consumption and noise. The basic principle of fan calibration is to ensure that the vehicle can run at the lowest speed at any time without overheating, so as to achieve the purpose of saving fuel and reducing noise. [0003] Affected by the cooling system configuration of the vehicle, different engines are matched with different cooling systems, and the operation control requirements of the fan...

AI Technical Summary

Problems solved by technology

[0003] Affected by the cooling system configuration of the vehicle, different engines are matched with different cooling systems, and the operation control requirements of the fans are completely different throughout the life cycle of the vehicle. The minimum speed requirements of the fans are also different for vehicles with the same configuration, at different times, and on different driving routes. , it is very important to determine the operating speed of the fan reasonably, which not only meets the cooling requirements but also saves fuel and reduces noise. However, the usual fan calibration is based on theoretical calculations to give an approximate fan speed, and the vehicle is actually affected by external environmental conditions. There is a large discrepancy with the theoretical calculation

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