An Engineering Office for Advanced Combustion Management

Patent AT523924B1: Recursive Sequential Combustion

We at CBOne are very proud to announce the recent grant of this patent related to our MOeBIUS technology, which could become a game changer!

Recursive sequential combustion allows the circulation of a large quantity of burnt gases in the loop formed by an annular combustion chamber. The recirculated combustion gases maximise interaction with the fresh reactants and make the hot core more heat conservative. All burners are arranged in a ring, literally placed one behind the other. The inlet and exhaust gas paths are located in the walls. This unique concept leads to positive effects such as robust lean operation and excellent NOx and soot performance. 

Patent publication & grant in:

• Patentblatt of the Austrian Patent Office (in German, pp. 5 & 9).
• Espacenet 
• Google patents
• International patent from the Patent Cooperation Treaty, filing PCT/AT2021/060270 

More about the MOeBIUS technology:

• MOeBIUS: Recursive Sequential Combustion (Conference Talk)
• Bluetifuel and MOeBIUS at EnInnov 2022! (Conference articles)

Patent AT519720B1: Combined Optic-Acoustic Compact Probe and method for monitoring combustion processes and/or an ignition process

An advanced sensing system analyses the sound and light emitted by the flame. This device is called RCP probe for "Rayleigh Criterion Probe", or simply the emotion probe in connection to the em(o)otion technologies developed jointly by CBOne and FH Joanneum. This contribution has the patent reference A 50160/2017.

Patent publication in:

• Patentblatt (in German): https://www.patentamt.at/fileadmin/root_oepa/Dateien/Patente/PA_Publikationen/PB2021010II.pdf
• Espacenet: https://worldwide.espacenet.com/patent/search?q=pn%3DAT519720B1  
• Google patents: https://patents.google.com/patent/AT519720B1/en

Technical and scientific publications:

• Combined Optic-Acoustic Monitoring of Combustion in a Gas Turbine (Journal Publication)

The collaborative research project “em(o)otion” was supported financially since 2015 by the FFG (Austrian Research Promotion Agency) and by the BMVIT (Austrian Federal Ministry for Transport, Innovation and Technology). The project about “Engine health monitoring and refined combustion control based on optical diagnostic techniques embedded in the combustor” was supported by the Austrian grant for applied research in aviation called the “Take-Off” program, contracts 850470 (emotion, 2015–2017) and 861004 (emootion, 2017–2020).

Four technology bricks, hydrogen-ready

Four Patents, four Key Enabling Technologies!

Combustion Bay One is an engineering office of mechanical engineering, specialised in combustion technology. 

What makes us special is innovation. We have solutions others do not have. Here are the ones for which we were granted a patent:

• Patent AT516424B1: The Pilot Flame as a Tuneable Thermoacoustic Driver for Combustion Control
• Patent AT519720B1: Combined Optic-Acoustic Compact Probe and method for monitoring combustion processes and/or an ignition process
• Patent AT522614B1: Method for a well repeatable injection of fuel and oxidant
• Patent AT523924B1: Recursive Sequential Combustion

Patent AT522614B1: Method & set-up for a well repeatable injection of fuel and oxidant

The technology protected by this patent was developed within the explorative project ”rePorT” (Instrumented fuel injection ports for advanced monitoring of the injection in the combustor of an aeroengine, contract FFG / Take Off Call 2014 / 850454).  Additional intellectual property tasks were supported by the FFG / Patent.Scheck / Project 870672: rePeat IP (Repeatable injection conditions, IP chapter). 

• Publication of the Austrian Patent Office (in German): Patentblatt Publication, November 2021, PB2021011II.pdf
• Publication in EspaceNet: https://worldwide.espacenet.com/patent/search?q=pn%3DAT522614B1
• Publication in Google Patents: https://patents.google.com/patent/AT522614A1/en?oq=AT522614A1

The rePeaT project has three key principles:

• The first is a technical arrangement for injecting into a turbine burner injector to avoid overheating of the fuel and the resulting clogging of the injection holes and distribute it in a well-repeated manner. It involves the feedback of a given quantity of fuel.
• The second is a method of fuel flowmetry related to the first idea. It is based on the simultaneous measurement of the pressure and temperature of the fuel in the injector in the return circuit.
• The third idea is a technical arrangement involving 3D printing, allowing the technical implementation of the two first ideas.

 Our publications related to this topic:

• ASME Turbo Expo 2019: Mathematics to Shape
• EnInnov 2020: From the Dawn of Mankind to the Digital Fire