In this paper, the resin and non-direction fiber composite principle is discussed and the flow characteristics of the molding glass fiber varying with pressure of the internal conbustion engine valve cap made of the composite material are analyzed.

We do modal and Harmonic analysis to it and compared it with cast aluminum valve rocker cover.

The expert system of electrical upsetting process for valve based on artificial neural networks;

Selection of the parameters of electrical upsetting process for valve based on artificial neural networks;

Numerical simulation of electrical upsetting process for valve;

Starting from the valve structure relative to valve axial dimension, the structure, theory, adjusting method, operating method and characteristic for the special comparer which can be used for inspecting multiple axial parameters of engine valve in time are introduced in detail on the basis of the precondition of the unification between measuring benchmark and designing benchmark.

The finite_element software MAFAP was used to make simulation analysis on the finish_forging process of the engine valve.

On the base of unsteady-state analysis,process of engine valve for extruding is simulated and studied by FEA software.

New process for small end surface of engine air valve;

Experiment and analysis of laser fusion coating process for the cone of air valve in Model 240 engine of diesel locomotive;

Focusing on the problems existed in testing leak for engine air valves with kerosene, a device for leak testing is developed with the feature of fluid mechanics and tightness so as to increase production efficiency, reduce cost and improve working environment.