Ion Current Sensing for HCCI Combustion Feedback

2003 ◽  
Author(s):  
Petter Strandh ◽  
Magnus Christensen ◽  
Johan Bengtsson ◽  
Rolf Johansson ◽  
Andreas Vressner ◽  
...  
Keyword(s):  
Ion Current ◽  
Current Sensing ◽  
Hcci Combustion

scholarly journals Using Ion-current Sensing to Interpret Gasoline HCCI Combustion Processes

2006 ◽  
Author(s):  
Dimitris Panousakis ◽  
Andreas Gazis ◽  
Jill Patterson ◽  
Rui Chen ◽  
Jamie Turner ◽  
...  
Keyword(s):  
Ion Current ◽  
Current Sensing ◽  
Hcci Combustion ◽  
Combustion Processes

Replacing Mechanized Oxyfuel Cutting Sensors With Ion Current Sensing

2017 ◽  
Author(s):  
Christopher R. Martin
Keyword(s):  
Flow Rate ◽  
Ion Current ◽  
Work Piece ◽  
Active Sensing ◽  
Electrical Characteristics ◽  
Current Sensing ◽  
Additional Work ◽  
Oxygen Ratio

This paper describes a method using electrical characteristics of the torch, flame, and work piece to replace active sensing elements most commonly used for mechanized oxyfuel cutting applications; height, fuel/oxygen ratio, work temperature, and preheat flow rate. Calibrations are given for the torch under test for standoff accurate to ±1/32 in (0.8 mm) and F/O ratio accurate to ±.008. Methods are proposed for balancing flow across multi-torch systems, and detecting the work kindling temperature. Additional work is needed if calibrated flow and work temperatures are to be measured electrically.

Ion current sensing-based lean blowout detection for a pulse combustor

2017 ◽  
Vol 176 ◽  
pp. 263-271 ◽  
Author(s):  
Fangyan Li ◽  
Lijun Xu ◽  
Minglong Du ◽  
Lijun Yang ◽  
Zhang Cao
Keyword(s):  
Ion Current ◽  
Current Sensing ◽  
Lean Blowout ◽  
Pulse Combustor

Simulation and experimental study on ion current under GDI-HCCI combustion mode

2016 ◽  
Vol 5 (2) ◽  
pp. 120 ◽  
Author(s):  
Yinbo Cao ◽  
Yulin Chen ◽  
Jun Deng ◽  
Zongjie Hu ◽  
Robert W. Dibble ◽  
...  
Keyword(s):  
Experimental Study ◽  
Ion Current ◽  
Combustion Mode ◽  
Hcci Combustion

3D CFD Modeling and Validation of Ion Current Sensor in a Gen-Set Diesel Engine Using Chemical Kinetic Mechanism

2016 ◽  
Author(s):  
Tamer Badawy ◽  
Naeim Henein
Keyword(s):  
Diesel Engine ◽  
Combustion Chamber ◽  
Diesel Engines ◽  
Combustion Process ◽  
Ion Current ◽  
Cfd Modeling ◽  
Ionization Mechanism ◽  
Current Signal ◽  
Current Sensing ◽  
Cycle Simulation

The control of the combustion process is becoming a necessity for diesel engines in order to meet the upcoming stringent emission regulations. Ion current sensing technology has the potential to provide real-time feedback of the combustion process while using a fairly inexpensive sensor. 3D computational fluid dynamics (CFD) cycle simulation is becoming more complementary in understanding the complex combustion process in diesel engines. In this paper, a CFD study is focused on investigating the characteristics of the ion current signal produced during the combustion process of a Gen-set turbocharged diesel engine. Multiple virtual ion sensing probes are defined in different locations inside the combustion chamber to understand the influence of sensor location on signal characteristics. The n-heptane reaction mechanism and NO mechanism, combined with an ionization mechanism developed at WSU with 11 species, are used in the model to predict the chemical kinetics of combustion and the mole fraction of ionized species produced during combustion. Since the charge in diesel engines is heterogeneous and due to the sensing nature of the ion sensor, this paper explores the effect of sensor sensing diameter and its protrusion depth inside the combustion chamber on the ion current signal development. The simulation is validated by comparing in-cylinder pressure traces, the rate of heat release, and the ion current signal. Further, the model results are validated under different engine loads and injection pressures. This study utilizes the ionization mechanism to give further understanding of the complex formation of ionization species and their amplitudes, particularly at local sensing locations. This can be very vital to identify the potentials of using the ion current sensing and highlight its viability in feedback closed loop combustion control.

Spark Control for Ion Current Sensing

2016 ◽  
pp. 204-213
Author(s):  
Tycho Weißgerber ◽  
Gregor Kortendiek
Keyword(s):  
Ion Current ◽  
Current Sensing
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