According to the monthly statistical report of vehicles in January 2019, there are around eight hundred and thirty thousand diesel engine vehicles in Taiwan. To ensure the emission quality of diesel vehicle’s life cycle is one of the important subjects of government. Therefore, in order to protect the air quality, the Environmental Protection Administration of executive conducts the emission control policy of new vehicles and of in-use vehicles that is according to the Air Pollution Control Act. In this project, the first part of new vehicles emission control includes new vehicle certification, quality control and productive sampling tests which to ensure the emission quality is consistency. The second part of in-use vehicle emission control is through recall investigation and real-world driving test to monitor the emission qualities. In the current year, several targets has been completed that including the certification of 63 cases of new diesel engine and vehicle has been approved, conformity of production of 24 vehicle manufacturers. Furthermore, in order to validate in-use vehicles emission and to assist the emission quality satisfy the requirement of conformity of production vehicles, the 2 vehicle models (10 vehicles for each model) of in-use diesel vehicle recall investigations has also carried out. On the other hand, in response to the implementation of 6-stage emission standard regulation in the future and to realize the emission control benefits, the “Regulations Governing Issuance, Revocation, and Cancellation of Emissions Certificate of Conformity for Diesel and Alternative Clean Fuel Engine Vehicles” and “In-Use motor vehicle recall and correction regulations” have also been modified. In the same time, to follow the trend of NOx emission control and policy of emission reduction of high-emitted in-use vehicles in Taiwan, the inspection of activity effectiveness of SCR components, chassis dynamometer and real-driving emission test by Portable Emission Measurement System (PEMS) have been conducted in this project. This project has completed the NOx mass emission tests that included 102 heavy-duty vehicles on chassis dynamometer, real-driving emission tests that included 5 light duty vehicles and 2 heavy-duty vehicles. Furthermore, SCR activity effectiveness guidance of heavy-duty vehicle has established to be as a tool of the control strategy and to let the diesel vehicles emission control more completely.

Conformity of Production, Recall, Real-Driving Emissions Test