Variable Piston Timing

970837

02/24/1997

Event
International Congress & Exposition
Authors Abstract
Content
VPT (Variable Piston Timing) utilizes a lightweight piston design that varies the piston displacements and the periods of the 4 strokes, produces a power stroke in every revolution, and more. VPT can incorporate electronic devices by on board computer to change the stroke ratios and the timing during engine operation.
This article discusses VPT retrofit of a slow speed engine without electronics. Substantial horsepower, torque and some efficiency gains are achieved. The hardware changes are kept to a minimum. The first engine is scheduled to be tested in the third quarter of 1997. Electronic VPT will be included in the next generation engine.
Meta TagsDetails
DOI
https://doi.org/10.4271/970837
Pages
13
Citation
Yan, M., "Variable Piston Timing," SAE Technical Paper 970837, 1997, https://doi.org/10.4271/970837.
Additional Details
Publisher
Published
Feb 24, 1997
Product Code
970837
Content Type
Technical Paper
Language
English