Indoor testing device and method for vehicle heat balance ability

Abstract

The invention discloses an indoor testing device and method for the vehicle heat balance ability, and belongs to the field of vehicle cooling system heat balance technologies. The device comprises a chassis dynamometer, an environment bin with a temperature control system, a cooling fan and a temperature data collection system. The chassis dynamometer is arranged in the environment bin. The cooling fan is arranged in front of a vehicle to be tested in the environment bin and used for simulating the air speed. The temperature data collection system is arranged in the vehicle to be tested and used for measuring the temperature of a vehicle water way and the environment. According to the indoor testing device and method, the heat balance ability of an engine and a cooling system of the vehicle are tested fast and effectively, the maximum power point of an external characteristic curve of the engine, the water inlet and outlet temperature, at the maximum torque point, of the engine and the water inlet and outlet temperature of a radiator are tested, matching and requirements of the engine and the cooling system of the vehicle can be judged in real time, and the state of the sample vehicle to be tested can be adjusted for research and development.

Description

technical field [0001] The invention relates to the technical field of heat balance of a vehicle cooling system, in particular to an indoor test device and method for vehicle heat balance capability. Background technique [0002] During the research and development stage of automobiles, engine heat balance tests are usually required. The heat balance test directly affects the integration of the engine body and the cooling system equipped with the vehicle, so that it affects the area where the vehicle is sold. At the same time, this work is a comprehensive and complex testing process. Testing on the engine bench is often limited by the environment and cannot truly simulate the complex conditions of the vehicle on the road. The national standard "GB / T12542-2009 Road Test Method for Automobile Thermal Balance Capability" stipulates the method of thermal balance of automobiles on the road. At present, most of the major domestic automobile manufacturers adopt this method. Due t...

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Problems solved by technology

[0003] After searching, the Chinese patent ZL 200720304912.3 discloses a test platform for the thermal balance of the engine and vehicle. It adopts the method of refitting the whole vehicle, removing the drive shaft and using a fixed dynamometer. This method destroys the original structure of the vehicle and ignores the The impact of transmission efficiency on the vehicle, it usually takes about 2 working days to install a vehicle, the efficiency is low, it cannot truly reflect the state of the vehicle, and the measurement results have large errors

Moreover, the application does not have an ambient temperature control system, so the consistency of the test cannot be guaranteed. The cooling fan equipped in this solution cannot follow the speed of the vehicle. It is only used for blowing air and cannot track the wind speed according to the speed of the vehicle.

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