Author:
Bekking Pim,Puts Godfried,Spiller Martin,Bikas Georgios
Abstract
<div class="section abstract"><div class="htmlview paragraph">Although electricity is necessary for a country's economic development, many countries lack suitable grid infrastructure. Portable generators offer a consistent electric supply in the event of a blackout.</div><div class="htmlview paragraph">Be-Rex B.V. develops and already assembled a revolutionary engine-generator prototype. It eliminates the use of camshafts, crankshafts and flywheels while integrating the generator parts into the same spherical housing. Thus, it constitutes a compact, lightweight and cost-efficient singular unit. There is no mechanical power output while the load of the engine is determined by the demanded load of the generator. The four combustion chambers are arranged in pairs on the north and south hemisphere and the magnets of the stator are placed circumferential at the equator of the spherical housing. The rotating disc and the joiner build the rotor of the generator. While developing the engine special emphasis has been put on its multi-fuel capability. Optimized gas exchange together with an efficient scavenging concept and the combustion system allow the atmospheric version of the prototype with a displacement volume of 400 cc to achieve 10 bar of indicated mean effective pressure (imep) when running on gasoline. Using 1-D WAVE simulations the same atmospheric version converted to ammonia fuel achieves 8 bar of imep.</div><div class="htmlview paragraph">First firing results of an engine generator prototype running on gasoline solidify the proof of concept. In the design section the main characteristics of the concept will be highlighted and the working principle will be explained. In the modelling approach section the methodology to tackle the leakage and the friction issues will be presented before the main results of the final design optimization will be discussed. Afterwards, the first experimental runs will be analyzed and finally some possible applications will be addressed.</div></div>
Reference13 articles.
1. Thompson , G.J. ,
Wowczuk , Z.S. , and
Smith , J.E.
Rotary Engines – A Concept Review SAE Technical Paper 2003-01-3206 2003 https://doi.org/10.4271/2003-01-3206
2. Warren , S. and
Yang , D.C.H.
Design of Rotary Engines from the Apex Seal Profile Mech Mach Theory 64 2013 200 209 https://doi.org/10.1016/j.mechmachtheory.2013.01.015
3. Shkolnik , A. ,
Littera , D. ,
Nickerson , M. ,
Cho , K.
et al.
Development of a Small Rotary SI/CI Combustion Engine SAE Technical Paper 2014-32-0104 2014 https://doi.org/10.4271/2014-32-0104
4. Wu , W. ,
Lin , Y. , and
Chow , L.
A Heat Pipe Assisted Air-Cooled Rotary Wankel Engine for Improved Durability, Power and Efficiency SAE Technical Paper 2014-01-2160 2014 https://doi.org/10.4271/2014-01-2160
5. Shkolnik , A. ,
et al.
Compact, Lightweight, High Efficiency Rotary Engine for Generator, APU, and Range-extended Electric Vehicles Proceedings of the NDIA Ground Vehicle Systems Engineering and Technology Symposium, Power & Mobility Technical Session Novi, MI, USA 2018