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Integrated engine body

An all-in-one, engine technology, applied in the direction of engine components, machines/engines, mechanical equipment, etc., can solve the problem of increased maintenance costs and difficulty in cleaning the joint surface, special tools are required for disassembly and assembly of connecting rods, and the volume of the combustion chamber is difficult to control, etc. The problem is to eliminate the hidden danger of air leakage, reduce the assembly process, and improve the processing technology.

Active Publication Date: 2014-07-16
玉柴润威发动机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the above-mentioned structure of the engine, the engine has the following problems: 1. Since the piston connecting rod assembly needs to be loaded from the top of the cylinder hole on the crankcase body during assembly, the cylinder head must be removed before the piston connecting rod can be installed when taking it out. Take out the combination, so that the disassembly and assembly of the connecting rod requires special tools
And it is difficult to replace the piston, which is not conducive to later maintenance
②The cylinder head is installed on the cylinder block through the cylinder assembly bolts, and the cylinder head and the cylinder block need to be sealed with a cylinder gasket, and most of the cylinder gaskets are graphite pads, which cannot be reused, which increases maintenance costs and makes it difficult to clean the joint surface
In addition, the torque and strength requirements of the cylinder assembly bolts are relatively high, so high-strength bolts need to be selected, and the cost of the whole machine is high
③ The position and size requirements of the cylinder head, cylinder block, and crankcase joint surface are relatively high, which increases the processing cost
⑤ Due to the cumulative error caused by many factors such as the manufacture and assembly of the cylinder head, cylinder block, and crankcase body, as well as the thickness of the cylinder gasket, the volume of the combustion chamber is difficult to control, and there are hidden dangers of air leakage, which affects engine performance

Method used

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Examples

Experimental program
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Embodiment 1

[0023] see figure 1 and Figure 5 , an engine integrated body, including an engine integrated body with a cylinder head 1, a cylinder portion 2 and a crankcase portion 3 integrally formed by die-casting, the cylinder hole 21 of the cylinder portion 2 is separated from the inner cavity of the crankcase portion 3 The side wall extends to the combustion chamber 1a of the cylinder head 1, and the intake port 1b and the exhaust port of the cylinder head 1 communicate with the combustion chamber 1a respectively. The side walls on the other side of the cavity intersect, and the side wall at the intersection is provided with a relief hole 31 for assembling the piston 7 connecting rod 8 assembly, and the relief hole 31 is D-shaped. During processing, the relief hole 31 is used as a draft hole of a D-shaped mold. The relief hole 31 is located on the extension line of the axis of the cylinder hole 21 , the relief hole 31 is larger than the cylinder hole 21 , and the sealing cover 4 is ...

Embodiment 2

[0027]The present invention is not limited to the above-mentioned embodiments. The integrated body of the engine of the present invention can be set as an integrated body with a lower camshaft type gas distribution mechanism, or as an integrated body with an upper camshaft type gas distribution mechanism. body. The integrated engine body of the present invention may also include an integrated engine body formed by die-casting with a cylinder head, a cylinder portion and a crankcase portion, and the cylinder hole of the cylinder portion extends from the inner cavity side wall of the crankcase portion to the cylinder The combustion chamber of the head, the intake port and the exhaust port of the cylinder head communicate with the combustion chamber respectively, and the extension line of the central line of the cylinder hole intersects with the side wall of the other side of the inner cavity of the crankcase, and the side wall of the intersection A relief hole for assembling the...

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Abstract

The invention relates to an integrated engine body. The integrated engine body comprises a cylinder head, a cylinder and a crankcase which are integrally formed through pressure casting. A cylinder hole of the cylinder extends to a combustor of the cylinder head from the side wall of an inner cavity of the crankcase. An air inlet passage and an air outlet passage of the cylinder head are communicated with the combustor respectively. The extension line of the axis of the cylinder hole intersects with the side wall on the other side of the inner cavity of the crankcase. A via hole used for assembling a piston connecting rod component is formed in the side wall of the intersection, is positioned on the extension line of the axis of the cylinder hole, and is larger than the cylinder hole. A sealing cover is mounted on the via hole. A crankcase cover is mounted on the case closing face of the crankcase. Symmetrical crank holes are formed in the side walls of the crankcase cover and the crankcase. A cylinder head cover is mounted on the cylinder head. The integrated engine body is low in cost, the volume of the combustor is easy to control, uniformity is high, the hidden danger of air leakage is avoided, engine performance is stable, assembly processes are reduced, and assembly efficiency is improved.

Description

technical field [0001] The invention relates to the field of engines, in particular to an engine integrated body. Background technique [0002] Existing engine body is mostly assembled by cylinder head, cylinder block, crankcase body. There are also some engine blocks after the cylinder block and the crankcase body are integrally formed, and then assembled with the cylinder head by dowel pins, gaskets, and assembly bolts. The structural characteristics of the above-mentioned engine block: 1. the piston connecting rod assembly needs to be loaded from the top of the cylinder bore on the crankcase assembly when assembling, and the cylinder head assembly must be removed before the piston connecting rod assembly can be taken out when taking it out. ② After the cylinder head assembly is loaded into the valve and rocker arm, it is assembled on the crankcase body assembly through positioning pins, cylinder head gaskets, and cylinder head bolts. ③The combustion chamber is composed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F1/00F02F7/00
Inventor 高进谭健罗志勇李向昌王振伟杨丹白建国
Owner 玉柴润威发动机有限公司