A method for producing an integral volute supercharged exhaust manifold

A technology for exhaust manifolds and production methods, which is applied in the field of auto parts and can solve the problems of light weight, large volume, and rough flow paths that do not meet the requirements of automobiles.

Active Publication Date: 2011-12-07
西峡县内燃机进排气管有限责任公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the engine adopts exhaust gas turbocharging technology, the maximum explosion pressure and average temperature will be greatly increased during work. In most current designs, the turbo shell and exhaust manifold of the turbocharger are two independent castings. It is large in size and heavy in weight, which does not meet the requirements of lightweight automobiles; in addition, the joint surface of the turbine shell and the exhaust manifold is threaded after processing, and the flow channel is not smooth, and the gap on the joint surface makes the gas locally generated during the flow process. The eddy current affects the normal performance of the engine power and increases the noise

Method used

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  • A method for producing an integral volute supercharged exhaust manifold
  • A method for producing an integral volute supercharged exhaust manifold
  • A method for producing an integral volute supercharged exhaust manifold

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Embodiment Construction

[0028] like figure 1 , figure 2 , image 3 Shown, below by specific embodiment, further illustrate advantage of the present invention:

[0029] An integral volute supercharged exhaust manifold includes a turbocharger turbine shell 1 and an exhaust manifold 2, and the turbocharger turbine shell 1 and the exhaust manifold 2 are integrally cast and processed.

[0030] The austenitic ductile iron QTANi35Si5Cr2 contains the following chemical composition (unit, wt%) in mass percentage: C: ≤2.0%; Si: 4-6%; Mn: 0.5-1.5%; Ni: 34.0-36% ; Cr: 1.5~2.5%; Cu≤0.5%; P≤0.05%; S≤0.03%.

[0031] The production method of described austenitic nodular cast iron QTANi35Si5Cr2 comprises the steps:

[0032] a. Storage control of raw and auxiliary materials: for purchased high-quality pig iron (Q10, Q12 produced in Linzhou), high-quality low-carbon steel scrap, nickel-magnesium nodulizers, silicon-magnesium alloy nodulizers, silicon-strontium inoculants, and 75SiFe inoculants Carry out factory ...

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Abstract

The invention discloses a method for producing an integral volute pressurization exhaust manifold. The integral volute pressurization exhaust manifold comprises a supercharger turbo shell and an exhaust manifold. The supercharger turbo shell and the exhaust manifold are integrally cast. The integral volute pressurization exhaust manifold is made of an austenitic nodular cast iron QTANi35Si5Cr2 material. According to a product produced by the invention, the supercharger turbo shell and the exhaust manifold are designed into an integral cast; weights of parts are greatly reduced; simultaneously, a flow channel is smooth; and the normal exertion of engine power cannot be influenced by preventing a vortex from locally generated in a gap of combined surfaces in the gas flowing process.

Description

[0001] technical field [0002] The invention belongs to the technical field of auto parts, and in particular relates to a method for producing an integral volute supercharged exhaust manifold. Background technique [0003] With the continuous improvement and optimization of exhaust gas turbocharging technology, the continuous reduction of cost, coupled with the catalysis of energy-saving awareness and emission regulations, automobile exhaust emission regulations are more stringent. Reducing vehicle body weight, reducing fuel consumption, and improving automobile engine compression ratio are the key factors for automobiles. First question of design. Automotive engine supercharging technology is getting more and more attention because it can greatly increase power and torque without increasing engine displacement. Through the comparison of various supercharging methods, the exhaust gas turbocharging technology is widely used because it does not consume useful work. After...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D25/30F02B41/10C22C37/04C22C37/08C22C33/08B22C9/22
CPCY02T10/163Y02T10/12
Inventor 裴云秀李长武李党育田书涛靳国芳史玉峰党波涛封小虎
Owner 西峡县内燃机进排气管有限责任公司
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