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

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

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

A Framework of Control-Oriented Reaction-Based Model for Trajectory-Based HCCI Combustion With Variable Fuels

2017 ◽  
Author(s):  
Chen Zhang ◽  
Zongxuan Sun
Keyword(s):  
High Fidelity ◽  
Compression Ignition ◽  
Combustion Control ◽  
Free Piston ◽  
Hcci Combustion ◽  
Least Squares Optimization ◽  
Pure Compression ◽  
Reduce Emissions ◽  
Combustion Processes ◽  
Engine Cycle

A novel combustion control, i.e. the trajectory-based combustion control, was proposed previously. This control is enabled by free piston engines (FPEs) and utilizes the FPE’s controllable piston trajectory to enhance thermal efficiency, reduce emissions and realize variable fuels applications. On top of that, a control-oriented model was also developed aimed to implement the trajectory-based combustion control in real-time. Specifically, a unique phase separation method was proposed in the model, which separates an engine cycle into four phases (pure compression, ignition, heat release and pure expansion) and employs the minimal reaction mechanism accordingly. In this paper, the framework of the previous control-oriented model is extended to variable fuels, such as methane, n-heptane and bio-diesel. Such an extension is reasonable since the separated four phases are representative in typical combustion processes of all fuels within an engine cycle. Besides, a least-squares optimization is formulated to calibrate the chemical kinetics variables for each fuel. At last, simulation results and the related analysis show that all the derived control-oriented models have high fidelity and much lighter computational burdens to represent the HCCI combustion of each fuel along variable piston trajectories.

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