The Flex-OeCoS—a Novel Optically Accessible Test Rig for the Investigation of Advanced Combustion Processes under Engine-Like Conditions
Bruno Schneider,
Christian Schürch,
Konstantinos Boulouchos,
Stefan Herzig,
Marc Hangartner,
David Humair,
Silas Wüthrich,
Christoph Gossweiler,
Kai Herrmann
Affiliations
Bruno Schneider
Aerothermochemistry and Combustion Systems Laboratory LAV, Institute of Energy Technology, ETH Zürich, CH-8092 Zürich, Switzerland
Christian Schürch
Aerothermochemistry and Combustion Systems Laboratory LAV, Institute of Energy Technology, ETH Zürich, CH-8092 Zürich, Switzerland
Konstantinos Boulouchos
Aerothermochemistry and Combustion Systems Laboratory LAV, Institute of Energy Technology, ETH Zürich, CH-8092 Zürich, Switzerland
Stefan Herzig
Institute of Thermal and Fluid Engineering (ITFE), School of Engineering (HST), University of Applied Sciences and Arts Northwestern Switzerland (FHNW), CH-5210 Windisch, Switzerland
Marc Hangartner
Institute of Thermal and Fluid Engineering (ITFE), School of Engineering (HST), University of Applied Sciences and Arts Northwestern Switzerland (FHNW), CH-5210 Windisch, Switzerland
David Humair
Institute of Thermal and Fluid Engineering (ITFE), School of Engineering (HST), University of Applied Sciences and Arts Northwestern Switzerland (FHNW), CH-5210 Windisch, Switzerland
Silas Wüthrich
Institute of Thermal and Fluid Engineering (ITFE), School of Engineering (HST), University of Applied Sciences and Arts Northwestern Switzerland (FHNW), CH-5210 Windisch, Switzerland
Christoph Gossweiler
Institute of Thermal and Fluid Engineering (ITFE), School of Engineering (HST), University of Applied Sciences and Arts Northwestern Switzerland (FHNW), CH-5210 Windisch, Switzerland
Kai Herrmann
Institute of Thermal and Fluid Engineering (ITFE), School of Engineering (HST), University of Applied Sciences and Arts Northwestern Switzerland (FHNW), CH-5210 Windisch, Switzerland
A new test rig has been designed, built and commissioned, and is now jointly pursued to facilitate experimental investigations into advanced combustion processes (i.e., dual fuel, multi-mode) under turbulent conditions at high, engine-like temperature and pressure levels. Based on a standard diesel engine block, it offers much improved optical access to the in-cylinder processes due to its separated and rotated arrangement of the compression volume and combustion chamber, respectively. A fully variable pneumatic valve train and the appropriate preconditioning of the intake air allows it to represent a wide range of engine-like in-cylinder conditions regarding pressures, temperatures and turbulence levels. The modular design of the test rig facilitates easy optimizations of the combustion chamber/cylinder head design regarding different experimental requirements. The name of the new test rig, Flex-OeCoS, denotes its Flexibility regarding Optical engine Combustion diagnostics and/or the development of corresponding Sensing devices and applications. Measurements regarding in-cylinder gas pressures, temperatures and the flow field under typical operating conditions are presented to complete the description and assessment of the new test rig.
