Abstract
In view of functional requirements of cylinder assemblies for Diesel and Otto engines the paper analyzes the present state of the research in the world and advanced manufacturing technologies for cylinder assemblies. For a defined transition concept from conventional manufacturing technologies of cylinder assemblies to the advanced CAD/CAM/CNC technologies, an example of the mathematical and CAD/CAM model of the piston, the most complex component of cylinder assemblies is given. The concept of the informational integration of a domestic company for the manufacturing of cylinder assemblies based on the own model of virtual manufacturing system for extended CIM enterprise is also defined.