High-precision simulation inter-cooling constant temperature apparatus for automobile engine testing stand

Abstract

The invention discloses a high-precision simulation inter-cooling constant temperature apparatus for an automobile engine testing stand. The high-precision simulation inter-cooling constant temperature apparatus for an automobile engine testing stand includes a water / air heat exchanger which is communicated with the outlet and the air inlet of a supercharger of an engine and forms an air circulation channel, wherein the medium water outlet of the water / air heat exchanger is communicated to the medium water inlet of the water / air heat exchanger through a liquid storage tank, a tee ratio adjusting valve, a circulating water pump and a flow control valve successively; the medium water outlet of the water / air heat exchanger is also communicated to the other inlet of the tee ratio adjusting valve through the water / air heat exchanger through a pipeline; the heat exchange medium inlet of the water / air heat exchanger is communicated with a cooling water pressure water inlet, and a heat exchange medium outlet is communicated with a cooling water outlet; and an electric heater is arranged on the liquid storage tank. The high-precision simulation inter-cooling constant temperature apparatus for an automobile engine testing stand has the advantages of being small in the temperature fluctuation, being relatively higher in the heating speed, integrally improving accuracy and repeatability ofthe test, and saving energy consumption during the testing process.

Description

technical field [0001] The invention relates to a high-precision simulated intercooler constant temperature device for an automobile engine test bench. Background technique [0002] The high-temperature gas after the turbocharger of the automobile engine is generally cooled and then sent to the engine intake. The air / air cooler is generally used for cooling on the whole car, and the water / air cooler of the ship engine is generally used in the engine bench test. to cool down. [0003] Automobile engine test bench simulation intercooler constant temperature device is used for cooling and temperature control of high temperature gas after exhaust gas turbocharging during engine bench test. In-line intercooler constant temperature control device control For example, option 1, through the control unit to control the temperature sensor to collect the temperature of the engine inlet, and compare it with the set value, and then the control unit controls the flow of cooling water to ...

AI Technical Summary

Problems solved by technology

[0012] a. Temperature instability and slow temperature rise affect test efficiency and increase worthless test waiting time;

[0013] b. The process of heating up and temperature fluctuation increases the extra consumption of fuel

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