Design and Development of a Variable Valve Timing (VVT) Camshaft

740102

02/01/1974

Event
1974 Automotive Engineering Congress and Exposition
Authors Abstract
Content
The development of a variable valve timing (VVT) camshaft was initiated as a potential means of controlling exhaust emissions from a spark ignition piston engine. This approach was based on the fact that valve overlap influences internal exhaust gas recirculation which in turn affects spark ignition engine emissions and performance. The design, fabrication, bench tests and engine durability tests of a unit incorporating splines to allow the intake cams to move relative to the exhaust cams is discussed. Preliminary test data from a 350 CID (5700 cm3) engine fitted with the VVT camshaft are discussed with regard to durability and emissions.
Meta TagsDetails
DOI
https://doi.org/10.4271/740102
Pages
11
Citation
Schiele, C., DeNagel, S., and Bennethum, J., "Design and Development of a Variable Valve Timing (VVT) Camshaft," SAE Technical Paper 740102, 1974, https://doi.org/10.4271/740102.
Additional Details
Publisher
Published
Feb 1, 1974
Product Code
740102
Content Type
Technical Paper
Language
English