Elastic adjustable sparking plug sealing structure

A sealing structure and adjustable technology, which is applied in the direction of spark plugs, engine sealing devices, spark ignition controllers, etc., can solve the problems of inability to make up for the machining error of the spark plug installation hole of the spacer and the cylinder cover, insufficient sealing of the cylinder cover, etc. Inability to achieve elastic adjustable sealing and other problems, to achieve the effects of saving assembly time, good sealing, and simple structure

Active Publication Date: 2013-02-27
DONGFENG MOTOR CORP HUBEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide an elastically adjustable spark plug sealing structure for the existing problems such as insufficient sealing of the existing cylinder cover, inability to realize elastic adjustable sealing, and inability to make up for the processing error of the spacer and the spark plug mounting hole of the cylinder cover.

Method used

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  • Elastic adjustable sparking plug sealing structure
  • Elastic adjustable sparking plug sealing structure

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Effect test

Embodiment 1

[0024] see figure 1 , Figure 3-Figure 5 , the cylinder head oil and gas chamber is composed of a cylinder cover 10, a cylinder cover chamber 19 and a cylinder head 11, a spark plug 17 is arranged in the cylinder head 11, and a high voltage line 20 is arranged on the outside of the spark plug 17, an elastic adjustable spark plug sealing structure, comprising Spacer 6, the spacer 6 separates the high voltage line 20 from the cylinder cover chamber 19 and the spark plug 17 from the water jacket 21, the spacer 6 extends out of the cylinder cover 10, and the lower end surface of the spacer 6 contacts the cylinder head 11 A gasket is provided between the surfaces; the spacer 6 inside the cylinder cover 10 is provided with a pressure plate 3, the central hole wall of the pressure plate 3 is socketed with the outer peripheral surface of the spacer 6, and the upper surface of the pressure plate 3 The end surface is in contact with the top of the cylinder cover 10, and a spring 4 is s...

Embodiment 2

[0026] see Figure 2-Figure 5, The cylinder head oil and gas chamber is composed of the cylinder cover 10, the cylinder cover chamber 19 and the cylinder head 11. The cylinder head 11 is provided with a spark plug 17, and the outside of the spark plug 17 is provided with a high voltage line 20. An elastic adjustable spark plug sealing structure, including a spacer 6, the spacer 6 separates the high voltage line 20 from the cylinder cover chamber 19 and the spark plug 17 from the water jacket 21, and the spacer 6 extends out of the cylinder cover 10, A gasket is provided between the lower end surface of the spacer 6 and the contact surface of the cylinder head 11. A pressure plate 3 is arranged on the spacer 6 inside the cylinder cover 10, and the center hole wall of the pressure plate 3 is in contact with the outer circumferential surface of the spacer 6. The upper end surface of the pressure plate 3 is in contact with the top of the cylinder cover 10, and the spring 4 is set ...

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Abstract

The invention provides an elastic adjustable sparking plug sealing structure which comprises a spacer bush (6). The spacer bush (6) extends out of a cylinder cover lid (10), a sealing gasket is arranged between the lower end face of the spacer bush (6) and the contact surface of a cylinder cover (11), a pressing plate (3) is arranged on the spacer bush (6) on the inner side of the cylinder cover lid (10), a central hole wall of the pressing plate (3) is connected with the outer circumferential surface of the spacer bush (6) in sleeved mode, the upper end face of the pressing plate (3) is contacted with the top of the cylinder cover lid (10), a spring (4) sleeved on the outer circumferential surface of the spacer bush (6) is arranged below the pressing plate (3), the upper end of the spring (4) butts against the lower end face of the pressing plate (3), the lower end of the spring (4) butts against the inside of a spacer bush spring base (5), and the spacer bush spring base (5) is fixed on the outer circumferential surface of the spacer bush (6). The elastic adjustable sparking plug sealing structure is simple in structure and strong in applicability. Installation distance of the pressing plate (3) is adjusted by using compressibility and flexibility of the spring (4) so as to make up machining error between the spacer bush (6) and a sparking plug installation hole of the cylinder cover lid (10).

Description

technical field [0001] The invention relates to a spark plug sealing structure in an engine cylinder, in particular to an elastic adjustable spark plug sealing structure. Background technique [0002] In the traditional two-valve ignition engine, the spark plug is arranged obliquely relative to the engine cylinder, and directly extends out of the cylinder head, and the high-voltage line does not need to pass through the cylinder head cover. But current existing engine all is four-valve structure, and spark plug must be positioned at the middle position of four valves, is centered relative to cylinder, vertical distribution, is in cylinder head cover chamber interior, and external high voltage line must pass through cylinder head cover. Since the working environment of the spark plug is relatively strict and cannot be in contact with engine oil or coolant, it is necessary to use a spark plug spacer structure to prevent coolant or engine oil from seeping into the installation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F11/00F02P13/00
Inventor 贾李水程伟
Owner DONGFENG MOTOR CORP HUBEI
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