Automatic Control Method of NO Removal by a Combination of Ozone Injection and Exhaust Gas Recirculation

2010 ◽  
Vol 46 (3) ◽  
pp. 1166-1174 ◽  
Author(s):  
Yoshio Yoshioka ◽  
Hiroaki Kondo ◽  
Yasuharu Tabata ◽  
Hayato Hatakenaka ◽  
Katsushi Nakada
Keyword(s):  
Automatic Control ◽  
Control Method ◽  
Exhaust Gas Recirculation ◽  
Exhaust Gas ◽  
No Removal ◽  
Gas Recirculation ◽  
Ozone Injection

Efficient NO Removal from Diesel Exhausts Gases by a Combination of Ozone Injection and Exhaust Gas Recirculation

2007 ◽  
Vol 10 (2) ◽  
Author(s):  
Yoshio Yoshioka ◽  
Tetsuya Takahashi ◽  
Tsuyoshi Togashi ◽  
Taiji Shoyama
Keyword(s):  
Energy Consumption ◽  
Exhaust Gas Recirculation ◽  
Combination Method ◽  
Exhaust Gas ◽  
Total Energy Consumption ◽  
No Removal ◽  
Recirculation Rate ◽  
Non Thermal Plasma ◽  
Gas Recirculation ◽  
Ozone Injection

AbstractIn order to remove NO from diesel exhaust gas, non-thermal plasma methods have been expected so far. However it is known that one of the problems is a relatively large energy consumption of the De-NOx process. In this paper, we tried to solve this problem by using a combination method of exhaust gas recirculation and ozone injection. Using a 2.4kVA diesel engine generator, we investigated that how effective is the exhaust gas recirculation to reduce the NO concentration. NO removal experiments were carried out using ozone injecttion method, and a great reduction of discharge energy of De-NOx was confirmed. The optimal recirculation rate was discussed by evaluating the total energy consumption, and we obtained a conclusion that optimal recirculation rate is about 10%.

scholarly journals Low Cost Position Controller for Exhaust Gas Recirculation Valve System

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 2171 ◽  
Author(s):  
Habib Bhuiyan ◽  
Jung-Hyo Lee
Keyword(s):  
Position Control ◽  
Control Method ◽  
Low Cost ◽  
Static Friction ◽  
Exhaust Gas Recirculation ◽  
Exhaust Gas ◽  
Automotive Applications ◽  
Valve System ◽  
Position Controller ◽  
Gas Recirculation

This paper proposes a position control method for a low-cost exhaust gas recirculation (EGR) valve system for automotive applications. Generally, position control systems used in automotive applications have many restrictions, such as cost and space. The mechanical structure of the actuator causes high friction and large differences between static friction and coulomb friction. When this large friction difference occurs, the position control vibrates when the controller uses a conventional linear controller such as the P or PI controller. In this paper, we introduce an inexpensive position control method that can be applied under the high-difference-friction mechanical systems. The proposed method is verified through the use of experiments by comparing it with the results obtained when using a conventional control system.

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