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A gasket for a valve of an internal-combustion engine

一种内燃机、衬垫的技术，应用在发动机的密封装置、升阀、阀装置等方向，能够解决发动机效率降低、催化转化器性能降低、阀损坏等问题

Active Publication Date: 2015-05-13
FREUDENBERG SEALING TECH S A S DI EXTERNA ITAL S R L U
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to the apparent excess consumption of the lubricating oil itself, the excessive flow of lubricating oil also leads to a reduction in engine efficiency and a reduction in the performance of the vehicle's catalytic converter
Insufficient flow, on the other hand, brings increased valve wear and noise with localized temperature peaks
These phenomena can lead to premature failure of the valve as the valve stem of the valve itself is seizing inside the pilot element

Method used

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  • A gasket for a valve of an internal-combustion engine
  • A gasket for a valve of an internal-combustion engine
  • A gasket for a valve of an internal-combustion engine

Examples

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Embodiment Construction

[0029] With reference to the accompanying drawings, indicated as a whole by 1 is a gasket for a valve 2 of an internal combustion engine 3 according to the invention, known in itself and in figure 1 What is shown in is considered to be only necessary for understanding the invention.

[0030] In more detail, in figure 1 In the engine 3 is shown limitedly a portion 4 of a head 5 which in a known manner delimits a combustion chamber (in figure 1 not visible in , but is set below the portion 5 of the head 4 shown), inside the combustion chamber the fuel is oxidized in the presence of combustion air to convert the chemical energy contained in the fuel into Pressure can.

[0031] The combustion chamber receives, in a known manner, through its own opening a mixture comprising fuel and combustion air and, at the end of the combustion process, discharges combusted gases and air through another opening.

[0032] The flow from and to the combustion chamber is controlled by a respectiv...

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PUM

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Abstract

Described herein is a gasket (1) for a valve (2) of an internal-combustion engine (3); the valve (2) comprises a guide element (7) defining a through seat, and a stem (8) slidably movable in said seat; the gasket (1) comprises an annular sealing element (12), which is elastically deformable and is designed to be set externally on the valve (2) to co-operate both with the guide element (7) and with the stem (8), and an annular supporting member (13), which is set coaxially on at least part of the sealing element (12) in such a way that the latter is radially pressed between the supporting member (13) and the valve (2); the supporting member (13) comprises a first portion (25) for interaction with the sealing element (12) and a second portion (26) for positioning in use the gasket (1) on the engine (3); the first and second portions of the supporting member (13) form part of a first component (25) and a second component (26), respectively, that are distinct from one another and are mounted coaxially by snap-action coupling means (27).

Description

technical field [0001] The invention relates to a gasket for a valve of an internal combustion engine. Background technique [0002] The internal combustion engines for vehicles known in the prior art comprise a head supporting one or more cylinders, inside which head the engine cycle takes place and which is set in communication with the respective combustion chambers of the engine itself. In addition, on the aforementioned head there is provided a suitable seat designed to enable the combustion chamber to communicate with a channel designed to feed a mixture of unburned fuel and air into said chamber (intake channel ), and the combusted gases are exhausted from the combustion chamber (exhaust passage). [0003] The flow to and from each combustion chamber is controlled by appropriate valves acting on the aforementioned seats. In particular, each valve basically consists of a guide element fixed in a cavity in the engine head and a valve stem which is slidably movable in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F11/00
CPCF01L3/08F01L2301/00F02F11/00
Inventor 克劳迪奥·佐皮安德烈亚·焦尔达诺保罗·费弗尔达尼埃莱·博尔达博萨那
Owner FREUDENBERG SEALING TECH S A S DI EXTERNA ITAL S R L U
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