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Cylinder body of diesel engine

A cylinder block and diesel engine technology, applied in the direction of cylinders, cylinder heads, mechanical equipment, etc., can solve the problems of ineffective reduction of diesel engine combustion noise radiation, high scrap rate, and high noise of diesel engines, so as to improve stiffness and oil scraping Effect, the effect of reducing engine oil consumption

Inactive Publication Date: 2011-06-22
GUANGXI YUCHAI MASCH CO LTD
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  • Abstract
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Problems solved by technology

But this "Chuan" channel structure has obvious defects: (1) The structural strength of each independent sand core for casting this independent "Chuan" channel structure is very low, so that the reject rate caused by the deformation of the sand core remains high; ( 2) The cooling water jacket is only installed near the upper part of the cylinder bore, which cannot effectively reduce the combustion noise radiation of the diesel engine, and the noise of the diesel engine is relatively large

Method used

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  • Cylinder body of diesel engine
  • Cylinder body of diesel engine
  • Cylinder body of diesel engine

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Embodiment Construction

[0020] A specific embodiment 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 embodiment. It should be noted that the directional qualifiers such as up, down, left and right appearing in the present invention refer to the positions shown in the drawings for a clearer understanding of its structure, and do not limit the protection scope of the technical solution of the present invention.

[0021] Such as Figures 1 to 4 The diesel engine cylinder structure shown, wherein the cylinder block 1 extends laterally along the direction of the crankshaft (known structure, so not shown in the figure) at the bottom of the cylinder block, four cylinder holes 8 are arranged side by side on the upper part of the cylinder block 1, and each cylinder hole 8. Four crankcase blow-by passages 4 and four engine oil return passages 5 ...

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Abstract

The invention relates to a cylinder structure of a diesel engine, comprising a cylinder body, wherein both sides of the cylinder body, extending along a crankshaft direction, are respectively arranged to be vertical to gas circulation channels of a crankshaft case and engine oil return channels which are arranged in the crankshaft direction, every two gas leakage channels of the crankshaft case are communicated along the crankshaft direction, and every two engine oil return channels are communicated along the crankshaft direction. The cylinder structure of the diesel engine can efficiently enhance the rigidity of the cylinder body, lower deformation of a cylinder hole in the running process of the diesel engine and also lower the combustion noise of the engine.

Description

technical field [0001] The invention relates to a cylinder block structure of a diesel engine, in particular to a cylinder block structure containing a crankcase blow-by passage and an engine oil return passage. Background technique [0002] With the development of the automobile industry, automobiles have higher and higher requirements for diesel engines. Environmental protection and low noise are two of the most typical requirements. During the whole diesel engine operation process, there are many factors affecting environmental protection and noise. Diesel engine cylinder block is one of the important factors. Therefore, in the development of diesel engines, it is an important measure to increase the rigidity of the cylinder block to reduce the emissions and noise of diesel engines. [0003] And the crankcase blow-by channel in the current engine block is " river " shape passage vertically arranged on cylinder body longitudinal side; The opposite longitudinal side of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F1/20
Inventor 毛平安赵贵
Owner GUANGXI YUCHAI MASCH CO LTD
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