The Effects of Cylinder Head Deformation and Asymmetry on Exhaust Valve Thermo-Mechanical Stresses University of Illinois at Urbana-Champaign

Format:

Conference/Event

Author/Creator:

Meyer, Terrence R., author.

Conference Name:

International Congress & Exposition (1998-02-23 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1998

Summary:

A geometrically accurate, three-dimensional finite element model of a Diesel engine exhaust valve and cylinder head assembly has been developed to analyze the effect of cylinder head interactions on exhaust valve stresses. Results indicate that a multi-lobed stress pattern occurs around the exhaust valve head due to cylinder head deformation, stiffness variations, and thermal asymmetry. Consequently, peak valve bending and hoop stresses from the three-dimensional model are 48% and 40% higher, respectively, than for the two-dimensional, axisymmetric model. These results indicate the degree of model complexity required for more accurate analyses of exhaust valve operating stresses

Notes:

Vendor supplied data

Publisher Number:

981034

Access Restriction:

Restricted for use by site license