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Petrol engine air inlet passage with high-tumble intensity and high-flow coefficient

A gasoline engine, flow coefficient technology, applied in engine components, combustion engines, machines/engines, etc., can solve the problem of tumble flow intensity and flow coefficient cannot be taken into account, and achieve the effect of high tumble flow intensity

Inactive Publication Date: 2010-03-10
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the current gasoline engine inlet tumble strength and flow coefficient can not be balanced, to provide a gasoline engine inlet with high tumble strength and high flow coefficient

Method used

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  • Petrol engine air inlet passage with high-tumble intensity and high-flow coefficient
  • Petrol engine air inlet passage with high-tumble intensity and high-flow coefficient
  • Petrol engine air inlet passage with high-tumble intensity and high-flow coefficient

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Embodiment Construction

[0023] exist figure 1 and 2 In the structure shown, the intake port is an integral two-intake valve high-position tangential intake port, which has an intake port body 1, a valve guide boss 2 and an airway throat part 3, and the combustion chamber matched with it Chamber 4 is a sloping roof combustion chamber. The inlet 1a of the air inlet has a chamfer of 1×30°, which is formed by casting; the boss 2 of the valve guide is outside the main body 1 of the air inlet. The airway throat-to-throat ratio is 3. This part is formed by machining, and the angle γ between the two curved surfaces adjacent to the airway throat body 1 and the airway throat 2 in the tangential direction is 100°. The centerline 1b of the air inlet is basically a straight line when viewed from the side projection of the air inlet body (that is, the projection on the side view), and the straightness is less than 1mm. The cross-sectional shape of the air inlet body 1 is elliptical. Line 1b changes gently, and ...

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Abstract

The invention relates to a petrol engine air inlet passage with high-tumble intensity and high-flow coefficient, which has integral two inlet valves at high order in the tangential direction, and is matched with a pitched roof combustion chamber; the outer side of the air inlet passage body is provided with a valve duct convex plate of the air inlet passage. The air inlet passage is characterizedin that the included angle Upsilon between two curved surfaces adjacent to the part of a passage aditus laryngis of the air inlet passage body in tangential direction is between 60 degrees and 150 degrees; the included angle Beta between the air inlet passage center line of the air inlet passage body and the air inlet valve center line is between 30 degrees and 60 degrees; and the included angle Alpha between the air inlet passage center line of the air inlet passage body and the plane of the exhaust side of the combustion chamber is between minus 20 degrees and 15 degrees. By adopting the structure, the air inlet passage has higher tumble intensity and flow coefficient, and can realize consideration of both the tumble intensity and the flow coefficient of the petrol engine air inlet passage.

Description

technical field [0001] The invention relates to the technical field of gasoline engines. Background technique [0002] Due to energy shortages and increasing environmental pollution, automobile engines need to maximize and utilize the energy of every drop of fuel and reduce the number of harmful emissions as much as possible. Among the many factors affecting the fuel consumption rate and harmful emissions, the combustion of fuel is the decisive factor, and the combustion is closely related to the movement of the airflow and the organization of the mixed gas, so the air passage of the automobile engine, especially the intake passage Energy saving and emission reduction of automobiles is very important. [0003] For the design of gasoline engine intake port, we pay special attention to the two indicators of flow coefficient and tumble intensity, and hope to obtain the largest possible flow coefficient and tumble intensity, but there are always contradictions between these two...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M35/104
CPCY02T10/146Y02T10/12
Inventor 徐之勤陈小东谯鑫苏继才
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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