Structure-optimized machine oil pump with idle gear

An idler gear and oil pump technology, which is applied in the field of engine lubrication system components, can solve the problems of heavy weight and the inability of the idler shaft to be installed by interference fit.

Pending Publication Date: 2019-05-31
HUNAN OIL PUMP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the shortcomings of heavy cast iron, if the material of the pump body and pump cover is changed to cast aluminum, although the weight can be reduced, the idler shaft cannot be installed on the aluminum pump body or pump by interference fit. The cover is covered,

Method used

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  • Structure-optimized machine oil pump with idle gear
  • Structure-optimized machine oil pump with idle gear
  • Structure-optimized machine oil pump with idle gear

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Embodiment Construction

[0033] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

[0034] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined. In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can b...

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PUM

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Abstract

The invention provides a structure-optimized machine oil pump with an idle gear. The machine oil pump comprises a pump body, a pump cover, an idle gear shaft, the idle gear and a bolt; an oil cavity is formed in the pump body; an idle gear shaft mounting hole is formed in the pump cover; the idle gear shaft is provided with an axial bolt mounting hole and a lubricating through hole intersected with the bolt mounting hole; the idle gear sleeves the idle gear shaft; a screw plug fixes the idle gear shaft on the pump cover; the diameter of the bolt is smaller than the aperture of the bolt mounting hole of the idle gear shaft; an annular gap is formed between the bolt and the inner wall of the bolt mounting hole; an oil passing groove is formed in the side, near an oil cavity, of the round hole bottom surface of the idle gear shaft mounting hole; an inclined oil hole communicating with the oil cavity is drilled in the pump cover through the oil passing groove; high-pressure oil in the oilcavity flows into a gap between an idle gear bushing and the idle gear shaft through the inclined oil hole, the oil passing groove, the annular gap and the lubricating through hole in sequence; and oil leakage grooves are formed in two end surfaces of a shaft table of the idle gear.

Description

technical field [0001] The invention relates to a lubricating system component of an engine, in particular to an engine oil pump with an idler gear. Background technique [0002] The existing large-displacement oil pump is usually installed in the oil casing below the engine crankcase, and the gear on the engine crankshaft drives the transmission gear of the oil pump. Since the engine crankcase is large, the center distance between the oil pump transmission shaft and the crankshaft is relatively large , under the premise that the transmission ratio is determined, if we simply rely on increasing the diameter of the oil pump transmission gear and the gear on the crankshaft to match the center distance, it will inevitably cause the gear on the crankshaft and the oil pump transmission gear to be too large, which will increase the cost. The engine also doesn't have enough room for gears with a large diameter. Therefore, an idler gear must be added between the oil pump transmissi...

Claims

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Application Information

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IPC IPC(8): F16N13/20F16N23/00F16K17/04F04C2/18F04C14/24F04C15/00F01M1/02
Inventor 聂孝清许仲秋刘光明刘铁飞佘笑梅
Owner HUNAN OIL PUMP
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