The Electro-Hydraulic Valve Actuation (EHVA) for Medium Speed Diesel Engines - Development Steps with Simulations and Measurements

2007-01-1289

04/16/2007

Event
SAE World Congress & Exhibition
Authors Abstract
Content
Electro-Hydraulic Valve Actuation (EHVA) is one of the most promising ways to improve the performance and reduce the emissions of the diesel engines. The EHVA gives fully variable lift and event duration of the gas exchange valves and thus the combustion process can be better controlled in different operation points such as idle and partial load situation. Also totally new kind of gas exchange processes are possible to achieve.
This paper consists of alternative solutions of EHVA systems, the comparison of them by means of simulation and measurements, the empirical tests of EHVA system in a laboratory and finally conclusion and future research activities.
The developed EHVA system fulfills the requirements very well. The lift of the gas exchange valve is fast enough, and the seating velocity is under control. The system is able to run with open and closed loop control.
Meta TagsDetails
DOI
https://doi.org/10.4271/2007-01-1289
Pages
10
Citation
Herranen, M., Huhtala, K., Vilenius, M., and Liljenfeldt, G., "The Electro-Hydraulic Valve Actuation (EHVA) for Medium Speed Diesel Engines - Development Steps with Simulations and Measurements," SAE Technical Paper 2007-01-1289, 2007, https://doi.org/10.4271/2007-01-1289.
Additional Details
Publisher
Published
Apr 16, 2007
Product Code
2007-01-1289
Content Type
Technical Paper
Language
English