Heat-balance performance high-altitude simulation test table of engine

Abstract

The invention discloses a heat-balance performance high-altitude simulation test table of an engine. In the invention, the engine is arranged on a frame of the high-altitude simulation test table and is connected with a radiating water tank by a water inlet pipe and a water outlet pipe, a cooling water flowmeter is arranged on the water outlet pipe near the water outlet end of an engine water pump, the radiating water tank is soaked into a constant-temperature water tank, the radiating water tank and the constant-temperature water tank are respectively provided with a temperature measuring sensor, one side of the constant-temperature water tank is provided with a blower, the engine is respectively connected with an inlet air throttling and dropping device and an exhausting and vacuumizing device, and the radiating water tank is connected with an exhausting and pressure-stabilizing tank through a steam leading pipe. The invention can simulate the high-altitude atmospheric pressure of the engine and the radiating water tank in a flat area, can conveniently and economically carry out an engine altitude heat-balance test, provides a technical gist for the design and the development of an altitude engine radiating system, reduces altitude field test cost and shortens a developing period of the altitude engine.

Description

technical field [0001] The invention relates to the field of engine heat balance performance test equipment, and more specifically relates to a high-altitude simulation test bench for engine heat balance performance. Background technique [0002] The energy generated by engine fuel combustion mainly flows into: engine effective work, engine exhaust heat, heat taken away by engine coolant, auxiliary mechanism drive and friction loss, and heat lost to the surrounding environment by radiation and conduction. The heat balance performance of the engine refers to the proportion distribution of the heat of the above parts to the total heat generated by fuel combustion. It is an important indicator that reflects the perfection of the engine's working process and determines the strength design of the engine body and parts. [0003] When vehicles, construction machinery and other power equipment are operating in plateau areas, there are usually problems such as easy boiling of cooling...

AI Technical Summary

Problems solved by technology

[0006] 2. The low oxygen content in the air in the plateau area leads to a large heat load in the engine working process

[0007] On the premise that the engine does not adjust and improve the fuel injection system and combustion system, due to the long-term oxygen-deficient combustion state, the ignition delay period is prolonged, the afterburning is serious, the exhaust temperature rises, the supercharger is overspeed, and the body heat load increase

Images