Test system for heat exchange of internal cooling oil duct of internal-combustion engine piston

Abstract

The invention provides a test system for the heat exchange of an internal cooling oil duct of an internal-combustion engine piston. The system adopts a crank-link mechanism to drive the transparent piston to move in a transparent cylinder sleeve for imitation of actual movement of the internal-combustion engine piston, namely the inverse process of the movement of the internal-combustion engine piston; moreover, a high speed shooting device (10) is adopted to shoot the oscillation situation and the section distribution situation of cooling machine oil in the internal cooling oil duct during the whole movement process of the piston; the piston (8) consists of two parts, namely a piston main body (19) and a piston transparent part (23); and the cylinder sleeve (9) also consists of two parts, namely a cylinder sleeve main body (15) and a cylinder sleeve transparent part (16). The test system for the heat exchange of the internal cooling oil duct of the internal-combustion engine piston has the advantages of more vivid piston movement, good controllability, convenience in observance, wide observance range, long stroke and the like.

Description

technical field [0001] The invention relates to a heat exchange test system for an internal cooling oil channel of an internal combustion engine piston, in particular to a test system capable of observing the distribution and heat exchange of cooling oil in the internal cooling oil channel of an internal combustion engine piston. Background technique [0002] With the continuous development of internal combustion engine technology, the compression ratio and power per liter of internal combustion engines continue to increase. The piston works in a high temperature, high pressure, and high frequency working environment, and the heat load of the piston is getting higher and higher. In order to meet the requirements of internal combustion engines, pistons such as integral internal cooling oil chamber pistons, composite materials, steel top aluminum skirts, and integral forged steel pistons have emerged as the times require. These high heat load internal combustion engine pistons...

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Problems solved by technology

[0018] However, this test device uses a high-speed reciprocating mechanism to simulate the piston movement, so it is difficult to make the piston movement law undistorted, and the camera is installed on the guide rail mechanism, the vibration caused by the piston movement has a great impact on the shooting effect, and the shooting angle is not good , Looking down at the top of the piston is not very accurate for understanding the vibration distribution of the cooling oil, and the distribution of the cooling oil vibration in the cross section cannot be photographed

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