A pressure oil-supplied piston oscillation cooling visual test device

Abstract

The invention belongs to the field of internal combustion engines, and specifically discloses a pressure oil supply type piston oscillation cooling visualization test device, which comprises a motion mechanism, a visualized piston group, a cylinder liner, an oil supply mechanism and an observation mechanism. The motion mechanism is used to drive the visual piston group to reciprocate in the cylinder liner; the visual piston group includes the transparent test piston and the guide piston; the oil supply mechanism includes the outer oil supply pipe of the frame, the outer auxiliary connecting rod, the inner auxiliary connecting rod, and the oiling The hard pipe and the oiling hose assembly, the outer auxiliary connecting rod and the inner auxiliary connecting rod are movably connected, and there are inner oil passages in them. The oil supply mechanism is used to supply oil to the transparent test piston pressure; the observation mechanism is used to pass through the cylinder. The observation window on the sleeve takes pictures of the inside of the transparent test piston. The invention drives the movement of the visualized piston group through the motion mechanism, and cooperates with the pressure oil supply mechanism based on the auxiliary connecting rod and the observation mechanism based on the transparent test piston, so that the oscillation of the cooling oil of the marine diesel engine piston can be simulated and visualized.

Description

technical field [0001] The invention belongs to the field of internal combustion engines, and more particularly relates to a pressure oil supply type piston oscillation cooling visualization test device. Background technique [0002] Diesel engines have the advantages of strong power, good economy and high reliability. They are widely used in the fields of national defense and military industry, road transportation, construction machinery, etc., especially in the shipping industry, occupying a dominant position. With the continuous improvement of diesel engine power and strengthening degree, the failure of key components such as pistons and cylinder heads may greatly increase. In order to ensure the reliability and durability of diesel engines, higher reliability of key components is proposed. Require. [0003] As one of the core components of a diesel engine, the piston plays a vital role, converting the instantaneous thermal energy in the combustion system into mechanical...

AI Technical Summary

Problems solved by technology

The test devices described in patents CN110579355A and CN110207991A mainly study the form of oscillation cooling realized by telescopic sleeves and built-in oil circuits in large-scale low-speed crosshead diesel engines, and are not suitable for visual observation of pressure oil-supply piston oscillation cooling for medium-speed and high-power marine diesel engines

In addition, the above-mentioned patents generally did not consider the dynamic balance of the test device, especially how to balance the first-order and second-order reciprocating inertial forces generated by the piston movement, nor did they consider the lubrication of the main friction pairs in the test device

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