Turbo charged SI engines are a major possibility in the current trend of down-sized engines with preserved drivability performance. Considering control and supervision it is favorable to have a mean value model to be used e.g. in observer design. Such models of turbo engines are similar to those of naturally aspirated engines, but there are some special characteristics, e.g. the interconnected ...

Abstract A key component in Hybrid Laminar Flow Control (HLFC) is a turbo-compressor, which requires an inverter. However, harsh environment combination with restrictive boundary conditions make the inverter design very challenging. Moreover, aviation certification standards have to be considered. By reason of its growing significance, Model-Based Systems Engineering (MBSE) approach described b...

Within a broader national project aimed at the hybridization of standard city car (the 998 cc Mitsubishi-derived gasoline engine Smart W451), our team tackled problem improving supercharger performance and response. The originally conceived design innovation was that eliminating mechanical connection between compressor turbine. In course study, it turned out is also possible to modify both comp...

Concept of Safe diagram was introduced 30 years ago (Singh and Schiffer, 1982) for the analysis of the vibration characteristics of packeted bladed disc for steam turbines. A detailed description of Safe diagram for steam turbine blades was presented 25 years ago in the 17 th Turbo Symposium (Singh et. el, 1988). Since that time it has found application in the design and failure analysis of man...