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Cylinder cover with detecting and positioning steps and air passage detecting method

A technology for locating steps and cylinder heads, applied in the directions of cylinder heads, cylinders, measuring devices, etc., can solve problems such as air passage obstruction, loss of engine performance, etc., and achieve the effects of improving stability, saving costs and cycles, and facilitating discovery.

Inactive Publication Date: 2016-05-04
BRILLIANCE AUTO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the present invention proposes a cylinder head air passage with a detection positioning step and an air passage detection method. This method solves the problem of air passage blockage and loss of engine performance, and its detection process is stable. Save production quality cost and cycle time

Method used

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  • Cylinder cover with detecting and positioning steps and air passage detecting method
  • Cylinder cover with detecting and positioning steps and air passage detecting method
  • Cylinder cover with detecting and positioning steps and air passage detecting method

Examples

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Embodiment 1

[0026] The cylinder head air passage with detection and positioning steps used in this embodiment is an integral structure, including air passage 1 and combustion chamber 2, and a triangular positioning step 3 is also provided at the throat of each air passage sand core (such as figure 1 ), the shortest side length of each surface of the triangular step 3 is not less than 5mm, the draft angle of each plane is less than 1°, and the casting fillet is less than or equal to 0.5mm.

Embodiment 2

[0028] The cylinder head casting mold with detection and positioning steps adopted in this embodiment includes a side mold 4, an air passage sand core head 5, an air passage sand core 6, an air passage sand core positioning reference 8, a bottom mold 9 and a combustion chamber The insert 10 is also provided with a triangular positioning step 7 at the throat position of the airway sand core 6 (such as figure 2 ), the length of the shortest side of each face of the triangular positioning step 7 is not less than 5mm, the draft angle of each plane is less than 1°, and the edge fillet is less than or equal to 0.5mm.

Embodiment 3

[0030] The cylinder head airway detection method adopted in this embodiment includes the following steps (such as image 3 ):

[0031] Step 101, casting a cylinder head blank with triangular positioning steps. Including: firstly make a sand core mold, and set a triangular step at the throat of each air channel sand core at a distance of 4 to 5 mm from the interface between the air channel and the combustion chamber. The plane draft angle slope is less than 1°, and the edge fillet is less than or equal to 0.5mm;

[0032] Secondly, using the above-mentioned sand core mold, the airway sand core is manufactured through the production process of sand washing and crusting, and the core body after mold opening is guaranteed to be complete under the premise of not using sand core filling agent;

[0033] Finally, on the basis of the above-mentioned airway sand core, the outer mold of the cylinder head is clamped and cast to produce a cylinder head blank with an airway cavity.

[003...

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Abstract

The invention relates to cylinder covers, in particular to a cylinder cover with detecting and positioning steps and an air passage detecting method. By means of the triangular positioning steps arranged in throat positions of air passage cores, the accuracy of the positions of air passages of the cylinder cover can be monitored in the production and manufacturing process of the cylinder cover, air passage problems and problem causes can be found conveniently, production and manufacturing feedback is given in time, the stability of cylinder cover products is improved, production quality cost is reduced, and the production period is shortened.

Description

technical field [0001] The invention relates to a cylinder head, in particular to a cylinder head air channel with a detection positioning step and an air channel detection method. Background technique [0002] In the mass production process of the cylinder head, the air passage of the cylinder head will be damaged due to the positioning accuracy of the air passage sand core during the blank casting process, the cleanliness of the mold surface, the temperature and flow mode of the casting liquid, and the long-term high heat of the mold. The operating conditions deviate from the theoretical model, and these deviations will affect the performance of the airway, thereby affecting the combustion characteristics and reducing the performance output of the engine. [0003] It has been learned that for most cylinder head manufacturers, the accuracy of the cylinder head airway position is either not monitored, or the feedback on the manufacturing process is achieved through cutting a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/22B22C9/10F02F1/42G01B21/00
CPCB22C9/10B22C9/22F02F1/42F02F2200/06G01B21/00
Inventor 曹轶群黄昌瑞李振华单保琴
Owner BRILLIANCE AUTO
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