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Enhanced cylinder cover bolt hole supporting structure

A support structure and bolt hole technology, applied to cylinder heads, cylinders, engine components, etc., can solve problems such as stress concentration, small bearing capacity, and impact on the reliability of cylinder head structures, and achieve excellent load-bearing characteristics and improve reliability.

Inactive Publication Date: 2018-11-23
CHINA NORTH ENGINE INST TIANJIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bearing capacity of the bolt hole support structure of the general cylinder head is small, and stress concentration will appear in the parts intersecting with the cylinder head water chamber and air passage, which will affect the structural reliability of the cylinder head and make the cylinder head unable to meet the requirements of high power density diesel engines. Requirements

Method used

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  • Enhanced cylinder cover bolt hole supporting structure
  • Enhanced cylinder cover bolt hole supporting structure
  • Enhanced cylinder cover bolt hole supporting structure

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Embodiment Construction

[0017] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0018] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention.

[0019] In the description of the present invention, it should be noted that unless otherwise specified and limited...

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Abstract

The invention provides an enhanced cylinder cover bolt hole supporting structure. The enhanced cylinder cover bolt hole supporting structure forms a cylinder cove with a water cavity, a gas channel and other supporting structures; the cylinder cover, the cylinder cover bolt hole supporting structure and a machine body are included; the cylinder cover is connected to the upper surface of the machine body due to the effects of a cylinder cove bolt and the cylinder cover bolt hole supporting structure; the cylinder cover bolt hole supporting structure is of a sector structure; and the thickness of the side making contact with the head portion of the cylinder cover bolt is smaller than the thickness of the side making contact with the machine body. The enhanced cylinder cover bolt hole supporting structure has the beneficial effects that a good bearing characteristic is achieved, and high bolt pre-tightening force can be borne; the pre-tightening force of the enhanced cylinder cover bolt acts on the cylinder cover bolt hole supporting structure, and only plays a main role in an area closest to the acting face, the stress level in the crossed areas of a cylinder cover water cavity structure and a gas channel structure with the cylinder cover bolt supporting structure is low, and the cylinder cover structure reliability is improved easily; and meanwhile, the enhanced cylinder cover bolt hole supporting structure can be popularized to other high power density engine structural members.

Description

technical field [0001] The invention belongs to the technical field of engine components, in particular to a support structure for strengthening cylinder head bolt holes. Background technique [0002] The cylinder head is an important part of the combustion chamber of the engine. It has a complex structure and harsh working conditions. It bears the impact of high-temperature and high-pressure gas while bearing huge bolt pre-tightening force, and bears heavy mechanical and thermal loads. The cylinder head includes structures such as air passages, water chambers, and bolt hole supports to realize the functions of intake and exhaust organization, gas sealing in the cylinder, etc., and at the same time meet the bearing requirements of mechanical loads and thermal loads. The bearing capacity of the cylinder head bolt hole support structure And bearing characteristics directly affect the structural reliability of the cylinder head. At present, the support structure of ordinary cy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F1/24F02F1/28F02F1/40
CPCF02F1/24F02F1/28F02F1/40
Inventor 王艳丽卫军朝张丽王延荣姚亮宇高丽英张丽强王俊斌
Owner CHINA NORTH ENGINE INST TIANJIN
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