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Connecting Rod Lubricating Oil Delivery Structure of Diesel Engine

A lubricating oil and diesel engine technology, applied in the direction of engine lubrication, pressure lubricant, engine cooling, etc., can solve the problems of discounted cooling effect, difficulty in piston, and obtaining cooling effect, so as to improve the ratio of lubricating oil delivery and strengthen the cooling effect , the effect of strengthening the cooling effect

Active Publication Date: 2018-01-12
GUANGXI YUCHAI MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the above method of forced cooling through the connecting rod to the inner cavity of the piston, due to space and angle constraints, the oil inlet of the internal cooling oil passage located in the inner cavity of the piston cannot receive 100% lubricating oil during the entire stroke of the piston. , which makes it difficult for the piston to obtain a consistent cooling effect during a working cycle of the piston
Therefore, the application scope of the connecting rod oiling method is limited, and the power-up and explosion pressure level of the diesel engine using the connecting rod oiling method are limited.
In order to ensure the cooling effect of the piston, the process of the connecting rod delivering lubricating oil to the piston is mainly concentrated near the top dead center, that is, it presents a symmetrical distribution before and after the top dead center, and the cooling demand of the piston after the top dead center is much higher than that before the top dead center, which is symmetrically distributed The oil delivery method greatly reduces the cooling effect

Method used

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  • Connecting Rod Lubricating Oil Delivery Structure of Diesel Engine
  • Connecting Rod Lubricating Oil Delivery Structure of Diesel Engine

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Embodiment Construction

[0017] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0018] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0019] Such as figure 1 and figure 2 As shown, according to a connecting rod lubricating oil delivery structure of a diesel engine according to a specific embodiment of the present invention, the lubricating oil cools the piston 1 of the diesel engine, the inside of the piston 1 has an internal cooling oil passage 2, and the top The wall is symmetrically provided with two oil inlets 3 communicating with the internal cool...

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Abstract

The invention discloses a connecting rod lubricating oil conveying structure of a diesel engine. The lubricating oil cools the piston of the diesel engine. The inside of the piston has an internal cooling oil passage, and the top wall of the inner cavity of the piston is symmetrically arranged with the internal cooling oil passage. Two connected oil inlets, the piston and the small head of the connecting rod are hinged together. At least one oil injection hole is aligned with the oil inlet in the whole stroke after the top dead center. The connecting rod lubricating oil delivery structure enhances the cooling effect on the piston after the top dead center by improving the ratio of lubricating oil delivery before and after the top dead center, so that the piston can adapt to higher load requirements.

Description

technical field [0001] The invention relates to the field of diesel engine lubrication, in particular to a connecting rod lubricating oil delivery structure of a diesel engine. Background technique [0002] With the continuous improvement of modern diesel engines, in order to ensure the reliable and safe operation of diesel engines, pistons usually use internal cooling oil passages for enhanced cooling, and the lubricating oil required for piston internal cooling oil passages of medium and heavy-duty diesel engines is usually delivered to the piston through connecting rods. cavity way. Specifically, the machine body is provided with a lubricating oil passage leading to the main bearing cap, the main bearing bush is provided with a certain oil groove, and the main journal of the crankshaft and the connecting rod neck are provided with a communicating lubricating oil passage, so as to transport the lubricating oil transferred from the main bearing seat to the connecting rod ne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01P3/08F01M1/06
Inventor 张锦陈彪苏怀林沈捷
Owner GUANGXI YUCHAI MASCH CO LTD
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