Development and Implementation of a Variable Valve Actuation System to a HD Diesel Engine

This paper describes the development process and the implementation of an electro-hydraulic variable valve actuation system to a HD single cylinder research Diesel engine. Because of the requirements of this special application the described development process deviates strongly from past publications. These requirements are directly derived from results of the combustion process development on a HD engine and their fulfillment by the VVA is simulated both for the mechanical design and the gas exchange. On the one hand the software AMESim is used on the other hand Ricardo Wave. Finally some experimental results of the prototype system are shown.