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Alcohol fuel engine valve seat and manufacturing method thereof, alcohol fuel engine, automobile

An engine valve, alcohol fuel technology, applied in engine components, machines/engines, mechanical equipment, etc., can solve the problems of valves and seat rings failing to lubricate, fast material decay at high temperature, and high engine combustion temperature. To achieve good high temperature mechanical properties, improve wear resistance, improve the effect of lubricating performance

Active Publication Date: 2020-04-17
ZHEJIANG GEELY HLDG GRP CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, since alcohol fuels (such as methanol and ethanol) are clean fuels, the engine burns without soot and cannot lubricate the valves and seat rings; meanwhile, alcohol fuels are highly corrosive, and the alcohol injected from the airway Alcohol fuel directly scours the valve seat ring, causing the surface corrosion of the valve seat ring; the combustion temperature of the engine fueled by alcohol is higher than that of the diesel engine, and the high-temperature hardness of the material decays quickly

Method used

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  • Alcohol fuel engine valve seat and manufacturing method thereof, alcohol fuel engine, automobile
  • Alcohol fuel engine valve seat and manufacturing method thereof, alcohol fuel engine, automobile
  • Alcohol fuel engine valve seat and manufacturing method thereof, alcohol fuel engine, automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0107] A valve seat for a methanol engine, including an intake valve seat and an exhaust valve seat; the chemical composition formulations of the intake valve seat and the exhaust valve seat are shown in Table 1.

[0108] The intake valve seat and the exhaust valve seat are independently compounded according to the chemical composition in Table 1, and after pressing, sintering and heat treatment, the intake valve seat and the exhaust valve seat are obtained.

[0109] Among them, the sintering temperature of the sintering process is 1150°C, and the sintering time is 80 minutes; the heating temperature of the heat treatment process is 900°C, the tempering temperature is 600°C, and the stabilization treatment temperature is 750°C.

Embodiment 2

[0111] A valve seat for a methanol engine, including an intake valve seat and an exhaust valve seat; the chemical composition formulations of the intake valve seat and the exhaust valve seat are shown in Table 1.

[0112] The intake valve seat and the exhaust valve seat are independently compounded according to the chemical composition in Table 1, and after pressing, sintering and heat treatment, the intake valve seat and the exhaust valve seat are obtained.

[0113] Among them, the sintering temperature of the sintering process is 1130°C, and the sintering time is 100min; the heating temperature of the heat treatment process is 880°C, the tempering temperature is 550°C, and the stabilization treatment temperature is 620°C.

Embodiment 3

[0115] A valve seat for a methanol engine, including an intake valve seat and an exhaust valve seat; the chemical composition formulations of the intake valve seat and the exhaust valve seat are shown in Table 1.

[0116] The intake valve seat and the exhaust valve seat are independently compounded according to the chemical composition in Table 1, and after pressing, sintering and heat treatment, the intake valve seat and the exhaust valve seat are obtained.

[0117] Among them, the sintering temperature of the sintering process is 1180°C, and the sintering time is 60 minutes; the heating temperature of the heat treatment process is 960°C, the tempering temperature is 640°C, and the stabilization treatment temperature is 880°C.

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Abstract

The invention discloses a valve seat ring of an alcohol fuel engine and a manufacturing method thereof, an alcohol fuel engine and an automobile. The inlet valve seat ring of the valve seat ring of the alcohol fuel engine is prepared from the following components in percentage by weight: 0.7-1.3% of C, 0.3-1.0% of Si, 0.1-0.5% of S, 1.0-4.0% of Cr, 5.0-10.0% of Mo, 17.0-21.0% of Co, less than or equal to 0.04% of W, less than or equal to 1.0% of other impurities and the balance Fe, wherein Cu is not included; an exhaust valve seat ring is prepared from the following components in percentage byweight: 0.7-1.3% of C, 0.3-1.0% of Si, less than or equal to 0.04% of S, 3.0-6.0% of Cr, 6.0-9.0% of Mo, 17.0-21.0% of Co, 1.5-3.0% of W, less than or equal to 2.0% of other impurities and the balance Fe, wherein Cu is not included. The valve seat ring disclosed by the invention has a good high temperature mechanical property, good in high temperature attenuating resistance in hardness and good in corrosion resistance of an alcohol fuel.

Description

technical field [0001] The invention relates to the technical field of an automobile engine valve seat, in particular to an alcohol fuel engine valve seat and a manufacturing method thereof, an alcohol fuel engine and an automobile. Background technique [0002] The main function of the valve seat is to seal the valve and withstand high-speed impact. Valve seat inserts of conventional engines such as figure 1 As shown, the valve seat ring 3 is press-fitted on the cylinder head 1 assembly, and further drilled to ensure the sealing with the valve 2, so as to prevent the sealing failure of the engine valve / valve seat ring, which will lead to engine gas leakage and power failure. Insufficient, the reliability life of the whole machine is difficult to improve and other problems. [0003] The valve seat ring of a diesel engine has a lubricating effect on the cooperation of the valve and the valve seat ring due to the oily smoke produced by combustion, which improves the wear of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L3/22C22C38/02C22C38/60C22C38/22C22C38/30B22F5/10
CPCB22F5/106C22C38/02C22C38/22C22C38/30C22C38/60F01L3/22
Inventor 卢瑞军蔡文远康世邦苏茂辉张志东
Owner ZHEJIANG GEELY HLDG GRP CO LTD
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