Design and Benefits of Dynamic Skip Fire Strategies for Cylinder Deactivated Engines

Event
SAE 2013 World Congress & Exhibition
Authors Abstract
Content
Cylinder deactivation is a fuel consumption reduction technology for throttled internal combustion engines and other engines with thermal efficiency loss at part cylinder load. Recent production implementations, deactivating fixed sets of cylinders under part-load operating conditions, have had limited “fly zones” due to issues with drivability and noise, vibration and harshness (NVH). Dynamic skip firing, which in its ultimate form incorporates anytime, any-cylinder deactivation, continuously varies the number of firing cylinders, along with cylinder load, obtaining flexible control of acoustic and vibrational excitations from the engine, and allowing an expanded operational envelope with fewer drive ability/NVH issues. This paper outlines design considerations of dynamic skip fire operational strategies, discusses implementation of the system on a vehicle, and presents benefits to fuel economy and NVH.
Meta TagsDetails
DOI
https://doi.org/10.4271/2013-01-0359
Pages
11
Citation
Wilcutts, M., Switkes, J., Shost, M., and Tripathi, A., "Design and Benefits of Dynamic Skip Fire Strategies for Cylinder Deactivated Engines," SAE Int. J. Engines. 6(1):278-288, 2013, https://doi.org/10.4271/2013-01-0359.
Additional Details
Publisher
Published
Apr 8, 2013
Product Code
2013-01-0359
Content Type
Journal Article
Language
English