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Stepped bar type valve

A technology of stepped rods and valves, applied in the direction of lift valves, engine components, machines/engines, etc., can solve problems such as overheating and carbon deposition in valve guides, and achieve the effects of solving overheating carbon deposition, avoiding damage, and improving service life

Inactive Publication Date: 2016-08-24
殷志成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a stepped stem valve. By designing the valve stem into a stepped shaft structure and designing a dovetail notch at the stepped surface, the problem of overheating and carbon deposition in the valve guide can be solved. question

Method used

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  • Stepped bar type valve

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Embodiment Construction

[0012] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0013] like figure 1 As shown, a stepped lever valve includes a valve 1, a dovetail groove 2, and a valve stem 3. It is characterized in that the valve stem 3 of the valve 1 is a stepped shaft structure, and the middle position of the valve stem 3 is thick The shaft is designed as a dovetail groove 2-type structure at the stepped surface.

[0014] Among them, the radius ratio of the stepped shaft of the valve stem 3 is 1:1.1, so that the sliding contact surface of the valve stem 3 and the valve guide is set as a thick shaft surface, and the thin shaft is placed on an idle non-contact surface un...

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Abstract

The invention relates to a stepped bar type valve which comprises a valve body, a dovetail groove and a valve rod. The valve rod of the valve is of a stepped shaft type structure, a thick shaft is arranged in the middle of the valve rod, and the step face is designed to be of a dovetail groove type structure. The radius ratio of a stepped shaft of the valve rod is 1:1.1, the sliding contact face of the valve rod and a valve guide pipe is arranged to be a thick shaft face, and the oblique angle of the dovetail groove ranges from 30 degrees to 45 degrees. The valve rod is designed to be of the stepped shaft type structure, and a dovetail notch is designed in the step face, so that the service life of the valve is prolonged, the damage of carbon deposition to the valve is avoided, and the phenomenon that a valve guide pipe is too hot to cause carbon deposition is eliminated; and the stepped bar type valve has the beneficial effects of being simple in structure, reducing product quality and meanwhile reducing production cost.

Description

technical field [0001] The invention relates to the field of automobile valves, in particular to a stepped rod type valve. Background technique [0002] The role of the valve is to input fuel into the engine and discharge exhaust gas. The traditional engine has only one intake valve and one exhaust valve per cylinder. This design structure is relatively simple, low cost, easy maintenance, and low-speed performance. Better, but the disadvantage is that the power is difficult to increase, especially at high speeds, the inflation efficiency is low and the performance is weak. In order to improve intake and exhaust efficiency, multi-valve technology is often used now. It is common that each cylinder has 4 valves (there is also a single-cylinder design with 3 or 5 valves, the principle is the same, such as the Audi A6 engine), 4 cylinders in total It is 16 valves. The "16V" that we often see in automobile materials means that the engine has 16 valves in total. This multi-valve ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L3/20
CPCF01L3/20
Inventor 殷志成
Owner 殷志成
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