Crankshaft assembly suitable for piston type two-stroke aero-engine

Abstract

The invention discloses a crankshaft assembly suitable for a piston type two-stroke aero-engine. The crankshaft assembly comprises a crankshaft body, main bearings and an auxiliary bearing, wherein the main bearings and the auxiliary bearing are self-lubricating deep groove ball bearings; and the crankshaft body comprises a crankshaft front crank, a crankshaft rear crank and a crankshaft connecting crank arm connected with the crankshaft front crank and the crankshaft rear crank, the crankshaft front crank is provided with the auxiliary bearing and one main bearing in a sleeved mode, and the crankshaft rear crank is provided with another main bearing in the sleeved mode. According to the crankshaft assembly suitable for the piston type two-stroke aero-engine, the main bearings and the auxiliary bearing are all self-lubricating deep groove ball bearings, and lubrication of the main bearings and the auxiliary bearing does not need to consume mixed oil of the two-stroke engine, so that the oil consumption of the engine can be reduced; and meanwhile, the self-lubricating bearings are sealed, so that the external influence on the bearings is small, and the reliability of the bearings isguaranteed.

Description

technical field [0001] The invention belongs to the technical field of engines, in particular, the invention relates to a crankshaft assembly suitable for a piston type two-stroke aircraft engine. Background technique [0002] At present, in the field of piston-type two-stroke aeroengines, the crankshaft assembly is the most important body part of the engine. Pneumatic mechanism and other auxiliary devices work. Nowadays, the requirements of aircraft for the powertrain are high power and heavy duty, low fuel consumption, and small piston two-stroke engines generally use engine direct-drive propellers, and the weight of the engine is particularly important, and the crankshaft occupies a large part of the weight, so the crankshaft Lightweight is an important research content of engine lightweight. [0003] The two-stroke small aeroengine has the advantage of high power-to-weight ratio, but the disadvantage of high fuel consumption is more obvious. The crankcase of a two-str...

AI Technical Summary

Problems solved by technology

[0003] The two-stroke small aero engine has the advantage of high power-to-weight ratio, but the disadvantage of high fuel consumption is more obvious

There is a certain ratio of fuel and lubricating oil in a two-stroke gasoline engine. Fuel is used for combustion and engine oil is used for lubrication. The excess mixed oil increases fuel consumption.

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