Valve opening and closing too quickly will cause near instantaneous fluid pressure fluctuations (water hammer), the peak is usually able to reach pipes more than six times the normal pressure, but also because the system water hammer wave reflection serious concussion;
2013年12月12日星期四
Structures of complex shape plastic intake manifold has been widely applied
In recent years, the high efficiency of the engine , reduce fuel consumption , improve performance and reduce exhaust emissions have become increasingly demanding situations , conventional engine design concepts are constantly updated. As for the engine performance , fuel consumption and other aspects important part of one huge impact - the engine intake system , particularly intake manifold design requirements are constantly improved, some highly integrated, complex plastic structural shapes intake manifold tube has been widely used. Plastic
Instrument valve manifolds wall is smooth , to reduce air resistance , easier to design the engine according to the performance requirements of complex structure and shape , can effectively enhance the engine power , improve the economy and emissions , while light weight plastic intake manifold , material and
High pressure ball valve low cost. Engine intake manifold plastic technology is a global trend . Engine development project in the background , in the 1.3-1.5L engine passenger cars on the basis of the design study of the plastic intake manifold . First, the impact of the engine intake system of ventilation process conducted in-depth research , focusing on the dynamic effects of the intake and exhaust gas pipelines , gas flow intake system energy losses exist two aspects , the proposed intake manifold overall design ideas.
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