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Intake and exhaust valve raceway and intake and exhaust valve assembly of engine

An air intake and exhaust, engine technology, used in engine components, machines/engines, mechanical equipment, etc., can solve problems such as abnormal valve clearance, and achieve the effect of increasing wear resistance and high wear resistance

Active Publication Date: 2017-01-04
SMAPOW ENGINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is achieved by providing an engine intake and exhaust valve seat and intake and exhaust valve combination, including the intake valve seat of the engine and the intake valve matched with it, and the exhaust valve seat and its combination The matching exhaust valve, the intake valve seat and the exhaust valve seat respectively include a main working area and a secondary working area, and the two ends of the main working area and the secondary working area are tightly connected into one As a whole, a strong alloy and a uniformly distributed hard phase can be obtained, thereby improving the wear resistance, heat resistance and radial crushing strength of the intake valve seat and exhaust valve seat, and solving the problem caused by the intake valve Abnormal wear and deformation between seat ring and intake valve, exhaust valve seat ring and exhaust valve lead to abnormal valve clearance and other quality problems

Method used

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  • Intake and exhaust valve raceway and intake and exhaust valve assembly of engine
  • Intake and exhaust valve raceway and intake and exhaust valve assembly of engine
  • Intake and exhaust valve raceway and intake and exhaust valve assembly of engine

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Please refer to figure 1 as well as figure 2 As shown, the preferred embodiment of the intake and exhaust valve seat of the engine of the present invention and the combination of intake and exhaust valves includes the intake valve seat 1 of the engine and the intake valve 2 that matches it, and the exhaust valve seat 3 and the exhaust valve 4 that matches it. The intake valve seat 1 and the exhaust valve seat 3 respectively include main working areas 11 and 31 and secondary working areas 12 and 32, and the two ends of the main working areas 11 and 31 and the secondary working areas 12 and 32 are in close contact with each other. The inner and outer diameters of the main working area 11 and the secondary working area 12 are equal, and the inner diameter and outer diameter of the main working area 31 and the secondary working area 32 are equal.

[0029] The main chemical composition (percentage by weight) of the main working area 11 of the intake valve seat 1 is: C 0.9...

Embodiment 2

[0034] On the basis of Example 1, the chemical composition (percentage by weight) of the secondary working area 12 of the intake valve seat 1 is: C 1.0%, S 0.2%, other impurities ≤ 2.0%, and the balance is Fe. The chemical composition (percentage by weight) of the secondary working area 32 of the exhaust valve seat 3 is: C 1.0%, S 0.2%, other impurities ≤ 2.0%, and the balance is Fe.

Embodiment 3

[0036] Specifically, the chemical composition (weight percentage) of the main working area 11 of the intake valve seat 1 is: C 0.9%, Si 0.6%, S 0.75%, Ni 5.5%, Cr 3.5%, Mo 6.5%, Co 17.5%, other impurities ≤ 2.0%, and the balance is Fe. The chemical composition (percentage by weight) of the intake valve 2 is: C 0.45%, S 0.020%, Cr 7.50%, Si 1.00%, Mn 0.50%, P0.030%, and the balance is Fe.

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PUM

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Abstract

The invention relates to an intake and exhaust valve raceway and intake and exhaust valve assembly of an engine. The intake and exhaust valve raceway and intake and exhaust valve assembly comprises an intake valve raceway of the engine and an intake valve matched with the intake valve raceway and an exhaust valve raceway and an exhaust valve matched with the exhaust valve raceway; the intake and exhaust valve raceways contain materials of Ni-Co-Mo-Cr and are manufactured by adopting a powder metallurgy technique; the main contents of the intake valve are Cr-Si-Mn-P or Cr-Mn-Ni-N; the main contents of the exhaust valve are Cr-Mn-Ni-Nb-W, or bead welding is performed on the disc part of the exhaust valve with the materials of Cr-W-Ni-Fe-Mo; and the problem of mechanical tappet clearance abnormity of the natural gas engine is solved by lowering abrasion loss between the intake valve raceway and the intake valve as well as abrasion loss between the exhaust valve raceway and the exhaust valve. According to the intake and exhaust valve raceway and intake and exhaust valve assembly, abrasion-resistance, heat-resistance and radial crushing strength of the intake valve raceway and the exhaust valve raceway are improved; and quality problems of valve clearance abnormity and the like caused by abnormal abrasion and deformation between the intake valve raceway and the intake valve as well as between the exhaust valve raceway and the exhaust valve are solved.

Description

technical field [0001] The invention belongs to the technical field of automobile engines, in particular to a matching combination of an intake valve seat and an intake valve, and a matching combination of an exhaust valve seat and an exhaust valve of a high-speed natural gas engine. Background technique [0002] The development of automobile and engine industry has led to a substantial increase in oil consumption and increasingly serious exhaust pollution, which restricts economic development and endangers the environment and human health. Theory and practice show that due to the high octane number of natural gas, the anti-knock performance is good; the molecular carbon-hydrogen ratio is low, and the CO after combustion 2 Low emission; good combustion characteristics, so the engine burning natural gas can save petroleum liquid fuel, reduce harmful emissions and carbon dioxide in the exhaust gas, reduce urban PM2.5, reduce greenhouse gas emissions, and is conducive to the ...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/60C22C38/10C22C38/08C22C38/18C22C38/12C22C38/34C22C38/04C22C38/58C22C38/48C22C38/44C22C19/07F01L3/02
CPCC22C19/07C22C38/001C22C38/02C22C38/04C22C38/105C22C38/12C22C38/18C22C38/34C22C38/44C22C38/48C22C38/58C22C38/60F01L3/02
Inventor 韩志玉欧阳金梅施永生刘伟
Owner SMAPOW ENGINE