Analysis of a High Speed Driven Valve System of Internal Combustion Engines with Consideration of the Design of Valve-Springs : 1st Report, Dynamic Behavior of a Driven Valve Train

Abstract

This paper presents a method for solving the dynamic response problems of a driven valve system of internal combustion engines. In this system there is a hysteresis behavior between the restoring force and the deflection for the locker arm. To treat this nonlinearity, the rigidity of each section is assumed to be the one of a partly linear spring. For the valve trains, the cam profile is complex in general. For treating a general cam profile, this paper applies a combination method of the Fourier expansion and the Laplace transform methods given by the author. Numerical calculations have been carried out for a sample problem of high speed driven valve trains, and the jump and the bounce phenomena are discussed in detail.