engine

An engine, strict circle technology, applied in the direction of engine components, machines/engines, mechanical equipment, etc., can solve the problem of manual removal, cannot prevent accelerated wear of valve stem and valve guide and valve hovering, and the engine cannot automatically remove the accumulation of valve stem. Carbon and other issues to reduce accelerated wear and reduce valve hovering

Active Publication Date: 2015-10-21
CHINA HANGFA SOUTH IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above methods can reduce the generation of carbon deposits, if the valve stems have carbon deposits, they cannot be removed automatically and must be removed manually when the engine is repaired.
Therefore, the engine of the prior art cannot automatically remove the carbon deposits on the valve stems, and thus cannot prevent the accelerated wear and valve hovering of the valve stems and valve guides caused by carbon deposits and gelling.

Method used

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Embodiment Construction

[0032] The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0033] figure 1 It is a schematic diagram of the cooperating structure of the valve stem carbon deposit scraping device, the valve and the valve guide of the engine according to the embodiment of the present invention. exist figure 1 In the figure, only the valve 10 of the engine, the valve seat 20, a part of the engine body 30, the valve guide 40 and the carbon deposit scraping device 100 of the valve stem are shown.

[0034] Such as figure 1 As shown, the engine of this embodiment includes a valve 10 , a valve guide 40 and a valve stem carbon deposit scraping device 100 . The valve 10 includes a head 11 and a valve stem 12 which is loosely fitted with a valve guide 40 . The valve stem ca...

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Abstract

The invention provides an engine which comprises an air valve (10) and a valve guide pipe (40); the air valve (10) comprises a head (11) and an air valve rod (12) which is matched with the valve guide pipe (40) in a clearance mode; the engine also comprises an air valve rod carbon deposition scraping device (100) and a limitation device; the air valve rod carbon deposition scraping device (100) comprises a rigid seal ring (120); one end of the valve guide pipe (40), which is far away from the head (11), is provided with the rigid seal ring (120) and the rigid seal ring (120) is sleeved on the air valve rod (12); a radial inner surface of the rigid seal ring (120) is provided with a cooperation portion which is matched with the periphery face of the air valve rod (12) in a clearance mode; the limitation device is fixedly arranged relative to the valve guide pipe (40); and the limitation device acts on the rigid seal ring (120) to restrict axial motion of the rigid seal ring (120) relative to the valve guide pipe (40). The engine has the advantage of being capable of effectively reducing accelerated abrasion of the air valve rod and the valve guide pipe and hovering of the air valve due to carbon disposition and gum disposition.

Description

technical field [0001] The present invention relates to the field of power machinery, more specifically, to an engine. Background technique [0002] When the piston engine is working, the valve stem and the valve guide need to be fully lubricated, and the lubricating oil will inevitably enter the combustion chamber through the gap between the valve stem and the valve guide, resulting in carbon deposits on the valve stem and head of the valve. If the valve stem and the valve guide have carbon deposits and glue, it will accelerate the wear of the valve stem and the valve guide, and even cause the valve stem to be stuck in the valve guide and cause the valve to hover. [0003] In the prior art, in order to reduce carbon deposits on the valve stem, the fitting gap between the valve stem and the valve guide is usually reduced to control the amount of lubricating oil entering the fitting gap. There are also some engines with a rubber oil deflector cover on the upper end of the va...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L3/24
Inventor 甘安唐武杰黄智格周智健
Owner CHINA HANGFA SOUTH IND CO LTD
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