Simulation testing machine for evaluating cooling uniformity of internal combustion engine

Abstract

The invention discloses a simulation testing machine for evaluating cooling uniformity of an internal combustion engine. The simulation testing machine comprises: an internal combustion engine body, a water pump, a high-temperature oil pump, a first motor, a second motor, a flowmeter of cooling water, a cooling fan, a radiator, a first throttle valve, a second throttle valve, a sensor of outlet temperature of cooling water, a sensor of outlet pressure of cooling water, a boiler of heat transfer oil, a high-temperature flowmeter, a simulated piston, a measuring plate, and the like. According to the invention, the boiler of heat transfer oil is used to heat silicone oil as well as make the heated silicone oil circulated and pass a cylinder of the internal combustion engine so as to simulate the actual heating of the internal combustion engine; besides, cyclic cooling liquid is used for cooling the simulation testing machine. According to the testing apparatus, the measuring plate is arranged between a cylinder cover of an engine and the body, so that relevant sensors van be arranged to measure internal parameters of a cooling water jacket of the internal combustion engine. Compared with an actual internal combustion engine, the simulation testing machine has advantages of simple structure and short test period; in addition, a function of high-efficient measurement of cooling uniformity of the internal combustion engine can be realized with low cost.

Description

technical field [0001] The present invention relates to a simulation test machine, in particular to a simulation test machine for evaluating the cooling uniformity of an internal combustion engine. Background technique [0002] The cylinder head and body of the internal combustion engine are the main components of the engine, and their forms and the shape of the internal cooling channels are very complicated. Tests have confirmed that the heat transferred from the gas to the coolant accounts for about 20%-30% of the total calorific value of the fuel, so the diesel engine cooling system has a great impact on the economy, reliability, and emission performance of the diesel engine. is particularly prominent. [0003] Insufficient cooling will lead to overheating, deflagration, early combustion, increased emissions, and increased wear of parts, which will deteriorate the power, economy, reliability, and emissions of the engine; It will reduce the performance of the diesel engi...

AI Technical Summary

Problems solved by technology

[0006] The actual machine test is the test method closest to the actual situation. However, due to the high pressure and high temperature in the cylinder of the internal combustion engine, it is impossible to arrange temperature and pressure sensors inside the water jacket, so that quantitative measurement of the flow uniformity of the coolant cannot be realized.

In addition, there are many modifications to the internal combustion engine itself in the actual machine experiment, the test cycle is long, and the test cost is high.

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