A closed heating system for an engine piston oscillating oil cavity heat transfer test bench
A heating system and engine technology, which is applied in the testing of engines, testing of machinery/structural components, measuring devices, etc., can solve the problem of inaccurate calculation of heat exchange gas flow, and achieve the effects of reducing energy consumption, simple installation and easy purchase.
Active Publication Date: 2018-05-04
CHINA NORTH ENGINE INST TIANJIN
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Problems solved by technology
[0005] In view of this, the present invention aims to propose a closed heating system for engine piston oscillating oil chamber heat transfer test bench to solve the problem of inaccurate calculation of heat exchange gas flow
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[0022] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0023] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood ...
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The invention provides a closed heating system of a heat transfer test stand for the oscillating oil chamber of an engine piston. The system comprises an engine body, a cylinder sleeve, a piston, a tee joint, an air-intake duct, an air-outlet duct and a heating channel. The piston is arranged inside the cylinder sleeve while being capable of sliding up and down inside the cylinder sleeve. The sidewall of the piston is in contact with and in seal fit with the inner wall of the cylinder sleeve. The outer-end opening of the cylinder sleeve is in sealed connection with the interface of the first channel of the tee joint. The interface of the second channel of the tee joint is internally provided with a first one-way valve. The interface of the second channel of the tee joint is in sealed communication with the outlet of the air-intake duct. The inlet of the air-intake duct is in sealed communication with the outlet of the heating channel. The interface of the third channel of the tee joint is internally provided with a second one-way valve. The interface of the third channel is in sealed communication with the inlet of the air-outlet duct. The outlet of the air-outlet duct is in sealed communication with the inlet of the heating channel. According to the technical scheme of the closed heating system of the heat transfer test stand for the oscillating oil chamber of the engine piston, the closed-loop circulation is realized and the one-way flow of the air flow is enabled. Meanwhile, the air backflow problem caused by the reciprocating motion of the piston is overcome.
Description
technical field [0001] The invention belongs to the technical field of closed heating systems, and in particular relates to a closed heating system of an engine piston vibration oil chamber heat transfer test bench. Background technique [0002] The piston is a key component of the engine. During the operation of the engine, it bears the periodic action of high-temperature gas and has a high thermal load. With the increase of the engine power per liter, the thermal load of the piston has been greatly increased. How to evaluate the thermal load of the piston has become a key technology in the development of new engines. At present, the key to the simulation evaluation of thermal load research is whether a set of accurate thermal boundary conditions can be obtained. At the same time, the calculation of the piston temperature field is an important part of the research on the reliability of the piston. As the most effective way to reduce the temperature of the piston, the piston...
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IPC IPC(8): G01M15/02
CPCG01M15/02
Inventor 庞铭袁晓帅胡定云胡玉平吴倩文张敬晨强慧
Owner CHINA NORTH ENGINE INST TIANJIN