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Xie F.,Zhengzhou University | Xie F.,Nanyang Institute of Technology | Feng C.,Henan Province Xixia Automobile Water Pump Ltd Company | Wang Z.,Henan Province Xixia Automobile Water Pump Ltd Company | Chen T.,Zhengzhou University
Zhongguo Jixie Gongcheng/China Mechanical Engineering | Year: 2014

Based on the characteristics of rubber O-ring of an automobile engine water pump working in wide temperature domain, a Mooney-Rivlin material model which was relevant to temperature was established to reveal the influences of temperature, fluid pressure and friction coefficient on the contact pressure, equivalent stress and sealing property. The results show that the increase of temperature causes the peak of contact pressure and equivalent stress to decrease exponentially, inducing the sealing reliability reduces. However, the peak of contact pressure of O-ring working in -40~130℃ is considerably larger than that of the fluid pressure, so the O-ring has reliable sealing property. Furthermore, although the increase of fluid pressure induces the increase of the peak of contact pressure, the reliability of sealing will decline for that the increasing speed of contact pressure is lower than that of fluid pressure. Additionally, the friction coefficient has little influence on the reliability of sealing. Source


Xie F.,Zhengzhou University | Xie F.,Nanyang Institute of Technology | Feng C.,Henan Province Xixia Automobile Water Pump Ltd Company | Wang Z.,Henan Province Xixia Automobile Water Pump Ltd Company | Chen T.,Zhengzhou University
Jixie Qiangdu/Journal of Mechanical Strength | Year: 2014

In order to improve the strength of the traditional solid structural belt wheel in the automobile engine water pump, two kinds of novel structures that web and concave-convex solid of belt wheel were proposed based on its loading characteristics. Moreover, the finite element models of belt wheels respectively for the three types were established in order to investigate the stress distribution of belt wheels comparatively. The results show that: the effects of centrifugal force on the belt wheel stress almost can be neglected. Furthermore, under the same external load, there is little difference between the web type and the traditional solid type of belt wheel for the maximum stress, while the stress distribution of web structure is closed related to the load direction. However, the maximum stress of concave-convex solid of belt wheel is much less than that of other two types, so the concave-convex solid structure can be adopted to improve the belt wheel strength significantly. Finally, the reliability of the finite element results was verified by the assembly reliability test of automobile engine water pump. Source


Trademark
Henan Province Xixia Automobile Water Pump Co. | Date: 2013-07-30

Engine intake and exhaust manifold; air automotive exhaust pipe; Vehicle water pumps. Automotive engine mount; automobile flywheel housing; turbine housing for land vehicles.

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