Intake valve seat ring of automobile ethanol fuel engine

By adopting layered quenching and multi-porous combined hole wall structure in the intake valve seat of the automobile ethanol fuel engine, the shortcomings of the existing intake valve seat in high temperature resistance, wear resistance and oxidation resistance are solved, and high Precision assembly and long life effect.

CN222296325UActive Publication Date: 2025-01-03NINGBO JINXIN POWER METALLURGICAL CO LTD
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Patent Information

Application Number
CN202420078234.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-01-12
Publication Date
2025-01-03
Estimated Expiration
2034-01-12

AI Technical Summary

Technical Problem

The intake valve seats of existing automobile engines have high performance requirements in terms of high temperature resistance, wear resistance and oxidation resistance, and are not scientifically designed, resulting in short service life and low accuracy in fitting with the intake valve.

Method used

Design an intake valve seat for automobile ethanol fuel engine, adopt an axially penetrated-formed intake valve seat body, which is divided into a working part with a quench hardness of HRB90-105 and a support part with a ≥HRB60, with a low inner side and a high outer side. It has an oblique interface, and a combined hole wall structure composed of a conical sealing surface, R-arc transition surface, circular arc surface and cylindrical surface are used on the air inlet to improve assembly accuracy and sealing performance.

Benefits of technology

It achieves low manufacturing cost, high assembly accuracy, good sealing performance, extends service life, and improves the impact and wear resistance of the intake valve race.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model discloses an intake valve seat ring of an automobile ethanol fuel engine. The intake valve seat ring comprises an intake valve seat ring body, wherein an air inlet is axially formed in the intake valve seat ring body in a penetrating manner; the intake valve seat ring body is provided with a working part of which the upper quenching hardness is HRB90-105 and a supporting part of which the lower quenching hardness is greater than or equal to HRB60; the interface between the working part and the supporting part is an inclined interface with a low inner side and a high outer side, the minimum distance between the inclined interface and the bottom plane of the intake valve seat ring body is 3.1 mm, and the maximum distance between the inclined interface and the bottom plane of the intake valve seat ring body is 4.2 mm; and the total height of the intake valve seat ring body is 6.05 mm. The utility model has the advantages of high assembly precision, good sealing performance, easiness in processing, long service life, impact resistance and wear resistance.
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