Closed-Loop Control of Spark Advance and Air-Fuel Ratio in SI Engines Using Cylinder Pressure

2000 ◽  
Author(s):  
Paljoo Yoon ◽  
Seungbum Park ◽  
Myoungho Sunwoo ◽  
Inyong Ohm ◽  
K. J. Yoon
Keyword(s):  
Closed Loop ◽  
Closed Loop Control ◽  
Cylinder Pressure ◽  
Loop Control ◽  
Fuel Ratio ◽  
Si Engines

scholarly journals Accommodation Closed-loop Control of Dieseline Fueled Flexible Fuel Engine Based on In-cylinder Pressure Sensor

2016 ◽  
Vol 49 (11) ◽  
pp. 202-209 ◽  
Author(s):  
Yaodong Hu ◽  
Tianyuan Zhou ◽  
Changsheng Yao ◽  
Fuyuan Yang ◽  
Jinli Wang ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
Closed Loop ◽  
Closed Loop Control ◽  
Cylinder Pressure ◽  
Loop Control

Study on the Effect of Fuzzy PID Air-Fuel Ratio Closed Loop Control of a Natural Gas Engine

2014 ◽  
Vol 577 ◽  
pp. 372-377 ◽  
Author(s):  
Yue Li ◽  
En Zhe Song ◽  
Zhan Hu Zhang ◽  
Guo Feng Zhao ◽  
Shuai Huang
Keyword(s):  
Control Strategy ◽  
Pid Control ◽  
Closed Loop ◽  
Feedback Signal ◽  
Closed Loop Control ◽  
Loop Control ◽  
Gas Engine ◽  
Fuel Ratio ◽  
Cng Engine ◽  
Self Tuning

The air-fuel ratio (AFR) control becomes an important research direction in gas engine. This article conducts air-fuel ratio (AFR) closed loop control research in a CNG engine. The injection pulse width of gas is controlled by a controller, oxygen sensor signal as a feedback signal. In order to make the engine can achieve the anticipated air-fuel ratio under different conditions; we adopt fuzzy self-tuning PID control strategy based on feed forward control. We transformed a 2135G diesel engine into the single fuel gas engine. Experimental investigation on the effect of air-fuel ratio closed loop control .Experimental results shows that, fuzzy self-tuning PID control strategy can control CNG engine air-fuel ratio working in the good condition.

scholarly journals Review of Sensing Methodologies for Estimation of Combustion Metrics

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Libin Jia ◽  
Jeffrey D. Naber ◽  
Jason R. Blough
Keyword(s):  
Signal Processing ◽  
Closed Loop ◽  
Combustion Process ◽  
Signal Acquisition ◽  
Closed Loop Control ◽  
Cylinder Pressure ◽  
Response Signal ◽  
Loop Control ◽  
Processing Techniques ◽  
Signal Processing Techniques

For reduction of engine-out emissions and improvement of fuel economy, closed-loop control of the combustion process has been explored and documented by many researchers. In the closed-loop control, the engine control parameters are optimized according to the estimated instantaneous combustion metrics provided by the combustion sensing process. Combustion sensing process is primarily composed of two aspects: combustion response signal acquisition and response signal processing. As a number of different signals have been employed as the response signal and the signal processing techniques can be different, this paper did a review work concerning the two aspects: combustion response signals and signal processing techniques. In-cylinder pressure signal was not investigated as one of the response signals in this paper since it has been studied and documented in many publications and also due to its high cost and inconvenience in the application.

scholarly journals Integrated cylinder pressure measurement for gas engine control

2011 ◽  
Vol 146 (3) ◽  
pp. 16-23
Author(s):  
Stefan NEUMANN
Keyword(s):  
Pressure Measurement ◽  
Closed Loop ◽  
Pressure Sensors ◽  
Pressure Curve ◽  
Closed Loop Control ◽  
Engine Control ◽  
Cylinder Pressure ◽  
Loop Control ◽  
Gas Engine ◽  
Amount Of Information

Closed loop control based on cylinder pressure measurement has been investigated for over 20 years. The aim has been to improve combustion control and online engine diagnostics. However the price of cylinder pressure sensors and the high demands on processor capacity have been preventing the development. Lately however sensor technologies have improved and as a result costs have been reduced. The purpose of this work is to show the large amount of information that can be read out from the cylinder pressure curve and to evaluate a cylinder pressure based closed loop engine control.

Closed Loop Control of Spark Advance Using a Cylinder Pressure Sensor

1976 ◽  
Vol 98 (4) ◽  
pp. 414-420 ◽  
Author(s):  
M. Hubbard ◽  
P. D. Dobson ◽  
J. D. Powell
Keyword(s):  
Pressure Sensor ◽  
Environmental Conditions ◽  
Engine Speed ◽  
Closed Loop ◽  
Operating Regime ◽  
Control Technique ◽  
Closed Loop Control ◽  
Cylinder Pressure ◽  
Closed Loop System ◽  
Loop Control

The objective of the spark advance control technique discussed in this paper is to provide a schedule which is optimum in the presence of changing engine and environmental conditions. The paper shows the benefits of adaptable spark control, describes the ability of a cylinder pressure based system to adapt to optimum spark on a single cylinder laboratory engine and describes the transient performance of a controller mechanized in the laboratory. Averaged over the entire engine speed-load operating regime, the closed loop system yields average brake horsepower within 0.1 percent of optimum based solely on the cylinder pressure information. The system has demonstrated a transient settling time of 0.1 second.

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