Expanding circulating oil cavity on hydrogen side can make circulation free.

扩大氢侧回油腔的容积改进了国产机回油不畅的问题。

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Involute profile of internal gear, in the small gear and internal gear intermediate have a crescent shape of the diaphragm, the purpose is the oil absorption cavity and pressure oil cavity off.

渐开线齿形的内啮合齿轮，在小齿轮和内齿轮中间有一块月牙形状的隔板，目的是把吸油腔和压油腔隔开。

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The petrol engine avoids the phenomenon of engine oil ejection, omits an original oil cavity baffle plate device, reduces a sealing gasket, and has simpler structure and more convenient installation.

本实用新型避免了喷机油的现象，并且取消了原有的油腔隔板装置，减少了一张密封垫，从而结构更加简单，安装更加方便。

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