Research on the Contribution of Reducing Friction in Cylinder Bore Forming
Cylinder bore forming is to design the cylinder bore into a cylindrical surface with profile,mak-ing its thermal deformation close to the cylindrical under working conditions,thus reducing the friction work and improving the thermal efficiency of the engine.Through the multi-body dynamics software PR of AVL company,the self-designed cylinder bores of different profiles were simulated and analyzed.By com-paring the changes of friction work,taking into account the changes of air leakage and knocking energy,the cylinder bore profiles that are easy to process and can reduce friction work were obtained.The opti-mized cylinder bores with profiles reduced the friction work by about 21%compared with the original scheme without profiles.
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