Engine test bench coolant circulation device

Abstract

The invention discloses a cooling liquid circulating device of a bed frame of an engine test machine. The cooling liquid circulating device comprises a cooling liquid proportioning mechanism, an internal circulation cooling liquid temperature control mechanism and a return water tank, wherein the cooling liquid proportioning mechanism provides a cooling liquid with a certain concentration for tests of the engine bed frame; the internal circulation cooling liquid temperature control mechanism comprises a cooling liquid circulation loop, a water inlet end of the cooling liquid circulation loop is connected with a water pump port of an engine, a water outlet end of the cooling liquid circulation loop is connected with a thermostat port of the engine, a heat exchanger is connected to the cooling liquid circulation loop, and the heat exchanger is connected to an external cooling liquid circulation system; and the return water tank is communicated with the cooling liquid proportioning mechanism and connected with the cooling liquid circulation loop and an engine water discharge valve. The cooling liquid circulating device disclosed by the invention can utilize the cooling liquid in a circulation mode, the water temperature is controlled precisely, and the test effect is improved.

Description

technical field [0001] The invention relates to the field of engine bench tests, in particular to a coolant circulation device for engine test benches. Background technique [0002] Before leaving the factory, the engine needs to be tested on a bench. During the bench test, the engine needs to be cooled. At present, the engine tray is usually directly connected to the water channel of the test bench, and tap water is used directly for the test. This will cause engine internal damage. Rust in the water chamber will seriously affect the effect of adding antifreeze to the engine in the future. In order to prevent the water chamber from rusting, antirust liquid is generally used as the coolant in the engine bench test. [0003] However, in the above-mentioned technical solution, the original cooling liquid supply directly adopts tap water, which cannot be recycled and effectively utilized. When using the anti-rust liquid as the cooling liquid, it will inevitably cause waste. At ...

AI Technical Summary

Problems solved by technology

[0002] Before leaving the factory, the engine needs to be tested on a bench. During the bench test, the engine needs to be cooled. At present, the engine tray is usually directly connected to the water channel of the test bench, and tap water is used directly for the test. This will cause engine internal damage. Rust in the water chamber will seriously affect the effect of adding antifreeze to the engine in the future. In order to prevent the water chamber from rusting, antirust liquid is generally used as the coolant in the engine bench test

[0003] However, in the above-mentioned technical solution, the original cooling liquid supply directly adopts tap water, which cannot be recycled and effectively utilized. When using the anti-rust liquid as the cooling liquid, it will inevitably cause waste. At the same time, in the above-mentioned technical solution, the water temperature control of the cooling liquid Inaccurate enough, affecting the test results, long running-in standby time

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