Research Progress on Control Technology of Diesel Engine NO_X and PM Emissions

Abstract

With the promotion of energy-saving and exhaust reduction policy, the application of diesel engine has been further extended. The formation and harm of nitrogen oxides (NOX) and particulate matter (PM) were mentioned in detail, which are major pollutants in diesel exhaust. Reviewed the research progress and application of diesel engine exhaust emission control technology, fuel quality improvement, internal purification and after-treatment are introduced separately. Finally, the future development direction of exhaust emission control technology was given combining research situation of diesel engine.

Study on the operating characteristics of a compound automatic transfer switch based on forced current commutation

“…Now, in order to solve the voltage drop, it is commonly used to install uninterruptible power supply, mechanical self‐powered generator, and other equipment in important occasions. However, these methods have the disadvantages of high cost, low efficiency, slow speed, and small capacity [5], which cannot guarantee high‐quality power supply. One of the most economical and economical ways to deal with voltage dips and improving the level of power supply is to use an automatic transfer switch (ATS).…”

Optimal design of the mechanical switch suitable for the ATS

“…Now, in order to solve the voltage sag fault, it is commonly used to install uninterruptible power supply, mechanical self‐powered generator, and other measures in important occasions. However, these methods have the disadvantages of high cost, low efficiency, slow speed, and small capacity [5], which cannot guarantee high‐quality power supply. One of the most economical and economical ways to deal with voltage dips and improving the level of power supply is to use an automatic transfer switch (ATS).…”