Leaping lubricating oil channel structure and engine

Abstract

The invention discloses a straddling lubricating oil passage structure and an engine, comprising an oil passage I connected with the oil inlet of the cylinder body, an oil passage II connected with the oil outlet of the cylinder body, and an oil passage connected between the oil passage I and the oil passage The oil passage III between II, the oil passage III is located in the cylinder body, and the oil passage III crosses the joint surface of the left crankcase body and the right crankcase body after the cylinder block and the crankcase are assembled. Through the oil passage III arranged on the cylinder block across the junction of the cylinder block, the left case body and the right case body, the number of oil holes opened on the crankcase body and the cylinder block is reduced, and the oil passages are reduced at the same time. A lubricating oil passage arranged on the cylinder body replaces the oil passage frequently bent and arranged in order to avoid the risk of lubricating oil leakage, thereby reducing manufacturing cost and flow loss in the oil passage when the lubricating oil is supplied.

Description

technical field [0001] The invention relates to the field of engines, in particular to a straddling lubricating oil channel structure and an engine. Background technique [0002] The engine lubrication system is usually composed of an oil pump installed in the crankcase to extract the lubricating oil in the oil pan, and then supply it to the parts of the engine that need lubrication through the oil passage formed by the crankcase and the cylinder block. In the engine formed by combining the left and right crankcases, if the oil supply passage crosses the junction of the cylinder block, the left crankcase and the right crankcase, it needs a high degree of sealing to prevent oil leakage. Leakage from the supply path; therefore, there are generally two ways to avoid leakage. One is that the oil passage only passes through the crankcase and cylinder body on one side, so the freedom of oil passage design is limited. In order to avoid leakage, it is necessary to The oil distribut...

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Problems solved by technology

In the engine formed by combining the left and right crankcases, if the oil supply passage crosses the junction of the cylinder block, the left crankcase and the right crankcase, it needs a high degree of sealing to prevent oil leakage. Leakage from the supply path; therefore, there are generally two ways to avoid leakage. One is that the oil passage only passes through the crankcase and cylinder body on one side, so the freedom of oil passage design is limited. In order to avoid leakage, it is necessary to The oil distribution channel for lubrication at the specified position can only be arranged on the same side of the box as the oil channel; the other is to design two oil holes on the left and right crankcases facing each other as crankcase oil passages, and then respectively on the right The crankcase body and the cylinder block, the left crankcase body and the cylinder block are designed to face two pairs of oil passages to form a "U"-shaped oil passage, so that the oil passages are relatively closed without passing through the joint of the three components, reducing the leakage of lubricating oil Although this type of design increases the degree of freedom in the arrangement of auxiliary oil passages, it will lead to too many oil passages and frequent bending of the oil passages, which not only increases the manufacturing cost but also increases the flow in the oil passages when the lubricating oil is supplied. loss

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