VVA reference section
Please browse this knowledge base of information on variable valve actuation and other internal combustion engine related topics.
Technology handouts
Please download the following PDFs summarising the benefits of Mechadyne’s VVA technologies:
Mechadyne’s papers
A general introduction to VVA
This article gives a good intoduction to variable valve actuation, showing what can be achieved and what the benefits are.
The upgrade path
See physical hardware for a new cylinder head design that benefits from the upgrade path. This paper also shows dynamic test results from running a cylinder head with a variable second event on exhaust.
Transient torque rise of an engine equipped with VVA
This paper summarises some cycle simulation analysis completed on a light duty diesel engine equipped with VVA.
The influence of variable valve actuation on the part load fuel economy of a modern light duty diesel engine
This paper shows how a variable event based VVA system can improve the performance of a light duty diesel engine.
The application of variable event valve timing to a modern diesel engine
This is another paper showing how variable event VVA systems can be applied to diesel engines Reprinted with permission, copyright (c) 1993 and 2000 SAE International.