Automatic Control of NO Removal by Ozone Injection Method

NOx from diesel exhaust gases can be removed by the ozone injection method. In order to industrialize the system, it is necessary to develop the NO control system. In this study, we constructed a NO control system without using NOx sensors. The control system adopted two control methods; the ozone control and the discharge power control of ozone generator, and the control values were decided by using neural nets. The NO control experiments were carried out successfully by our system. Regarding the uncertainty of ozone generation characteristics by air condition, we have developed an automatic re-learning method of neural net.