Nonlinear transient response of a high speed driven valve system and stresses in valve springs for internal combustion engines

Journal Article · Sat Jul 01 04:00:00 EDT 1989 · Transactions of the ASAE; (USA)

DOI:https://doi.org/10.1115/1.3269851· OSTI ID:6966532

Nagoya, K ^[1]

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1. Gunma Univ., Kiryu (Japan). Faculty of Technology

This paper presents a method for solving the dynamic response problems of a driven value system and the stress problem of valve springs for internal combustion engines. In this system there is hysteresis behavior in the spring constants during the rotation of the cam shaft. To treat this nonlinearity, the rigidity of each section is assumed to be one of a partly linear spring. For the valve trains, the cam profile is complex in general. To treat a general cam profile, this paper applies a combination method of Fourier expansion, the Laplace transform and analytical connection methods, and gives a response of valve trains. This paper also presents a theoretical result for the stresses in the valve spring due to the motion of the valve train based on the three dimensional curved beam theory.

• OSTI ID: 6966532
• Journal Information: Transactions of the ASAE; (USA), Journal Name: Transactions of the ASAE; (USA) Vol. 111; ISSN TAAEA; ISSN 0001-2351
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
330600 -- Advanced Propulsion Systems-- Vehicle Design Factors
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
FLOW REGULATORS
FOURIER TRANSFORMATION
HEAT ENGINES
HYSTERESIS
INTEGRAL TRANSFORMATIONS
INTERNAL COMBUSTION ENGINES
LAPLACE TRANSFORMATION
MOTION
STRESSES
THREE-DIMENSIONAL CALCULATIONS
TRANSFORMATIONS
VALVES