Exhaust valve assembly and engine
An exhaust valve and engine technology, applied in engine components, machines/engines, mechanical equipment, etc., can solve problems such as lax exhaust valve closing and exhaust valve sticking
Pending Publication Date: 2022-01-04
DONGFENG LIUZHOU MOTOR
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The main purpose of the present invention is to provide an exhaust valve assembly and an engine, aiming to solve the problem that the exhaust valve is closed due to the hard particles attached to the exhaust valve rod and the exhaust valve guide tube of the existing exhaust valve. lax question
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0031] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.
[0032] In addition, if there are descriptions involving "first", "second" and ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an exhaust valve assembly and an engine. The exhaust valve assembly comprises an exhaust valve body and an exhaust valve guide pipe; the exhaust valve body comprises an exhaust valve rod part extending in the axial direction and an exhaust valve head part arranged at one end of the exhaust valve rod part; the exhaust valve guide pipe is used for being fixedly installed on a cylinder cover of the engine; the exhaust valve guide pipe is provided with a guide channel penetrating in the axial direction; the guide channel is used for allowing the exhaust valve rod portion to be movably inserted; and the guide channel is provided with a waste containing section close to the exhaust valve head portion and a guide section away from the exhaust valve head portion, and the inner diameter of the guide channel in the waste containing section is larger than that of the guide section. In this way, the waste containing gap between the waste containing section and the exhaust valve rod part is larger than the gap between the guide section and the exhaust valve rod part, when the exhaust valve body moves close to the exhaust valve guide pipe, the waste containing gap can allow the exhaust valve rod part with hard particles attached to the periphery to penetrate through, and therefore the exhaust valve rod part and the exhaust valve guide pipe cannot be clamped, and normal operation of the engine is ensured.
Description
technical field [0001] The invention relates to the technical field of engine valves, in particular to an exhaust valve assembly and an engine. Background technique [0002] The engine exhaust valve of the existing automobile and the exhaust valve guide are clearance fits, and usually rely on the self-lubrication of the exhaust valve guide formed by powder metallurgy. When the engine is working normally, the high-temperature exhaust gas is discharged along the exhaust passage, and the conduit is heated by the high-temperature exhaust gas. At the same time, the high temperature of the exhaust is transmitted to the exhaust valve conduit, causing the hole of the exhaust valve conduit to expand. At this time, the exhaust valve and exhaust Increased valve guide hole clearance. Because there are many anti-knock additives in gasoline, when the gasoline is burned in the combustion chamber, the trace components of these anti-knock additives become extremely small hard particles (usu...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): F01L3/08
CPCF01L3/08
Inventor 邓发平何道明潘永亮姚克甫马百坦吴振铭雷钧富刘代玉
Owner DONGFENG LIUZHOU MOTOR