Improvements in PCCI Combustion and Emissions with Lower Distillation Temperature Fuels(HCCI, Combustion Processes I)

2004 ◽  
Vol 2004.6 (0) ◽  
pp. 221-227
Author(s):  
Atsushi SAKAI ◽  
Hiroyuki TAKEYAMA ◽  
Hideyuki OGAWA ◽  
Noboru MIYAMOTO
Keyword(s):  
Distillation Temperature ◽  
Hcci Combustion ◽  
Combustion Processes

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

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.

Sign in / Sign up

Export Citation Format

Share Document