This year, four major tasks were being set as this project’s major work contents which include: 1: implement new motorcycle new model certification and Conformity of Production (COP) emissions control measures; 2: promote to establish motorcycle electronic certification process; 3: implement in-use motorcycle recall and correction investigation tests; 4: cooperate with Taiwan EPA to implement motorcycle emissions control related control measures and help EPA to draft exhaust emissions standards and related basis researches.
This project has finished all tasks and according to the test results: 4 engine families failed the preliminary emissions tests; 10 engine families failed the inspection of emission control devices. As to the COP tests, many new motorcycles failed the tests which indicates that it is necessary to improve the consistency of quality for manufacturing of new motorcycles. As to the evaluation of 2014 model year green motorcycles, there were 13 engine families being preliminary selected.
As to the electronic certification process, the system being upgraded with the following functions: adjusted the application fee for manufacturers; added motorcycle type with correspond to its country of origin; progress inquiry for emissions and noise combined certificate application; electronic certification system corresponds to IPv6 with the function of evaluate and select green vehicle automatically, all of the previous mentioned functions are available on-line.
As to the in-use motorcycle testing, 50 motorcycles being tested and all in compliance with the standards.
According to the emissions database for stage 5 compliance motorcycles, less than 20% motorcycles could comply with the future stage 6 standards; from the EU 2013 emissions certification database analysis, about 60% of motorcycles could comply with the stage 5 standards; according to 2013 emissions certification database in Japan, none motorcycle could comply with our stage 5 standards; As to the emissions control regulations, the EPA has announced revisions to “Motorcycle Cold Driving Cycle Exhaust Pollution Testing Methods and Procedures” and revised contents of Article 2, 6, and 7 of “Vehicular Air Pollutant Emission Standards”; the average DF values of CO, HC, and NOx for domestic motorcycles with 15,000 km on-road durability travel mileage are 1.117, 1.082, and 1.114, for motorcycles estimate to 20,000 km are 1.177, 1.137, and 1.233, estimate to 35,000 km are 1.305, 1.214, and 1.296; the test results being performed by using WMTC and Stage 5 driving cycle have shown that CO and HC emissions mainly emitted during the first period (Cold Driving) more obvious for HC, the NOx emissions mainly emitted during later stage (Hot Driving) more obvious for large engine size motorcycles; the investigation tests for current in-use median and large engine size heavy motorcycles have shown that motorcycles with travel mileage exceed their warranty mileage tend to emit more emissions, sometimes far exceed the standards, motorcycles with certification emissions values close to or the same as their applicable standards, prone to exceed the standards during in-use period, HC failed rate were higher; as to the inspection on emissions control devices for in-use motorcycles, all inspections were in compliance; for old motorcycle, the CO and HC emissions tends to decrease after maintenance being performed, some motorcycle’s CO and NOx deteriorated higher than the certified DF values.
Suggestions：
(一). This year, two engine families failed to comply with the new motorcycle model random selection tests, and waiting for further testing or being requested to perform recall and correction program, the progress of subsequent repeat tests or recall and correction program should be traced and monitored.
(二). Currently, for some importers, the execution of self C.O.P tests is unsatisfactory, this project suggests EPA to suspend their certificates as punishment and provide as a measure to push them to finish their quality control program in accordance with regulations.
(三). As to the manufacturers with unsatisfactory emissions control performance, besides to request manufacturers to correct their defects, this project also suggests that this task should be included in the manufacturer’s quality control program, their manufactured emissions control devices should be random selected, inspected and recorded to check the consistency of quality by manufacturers, this task should be focused and to be checked in this project next year. In addition, as to the engine families with failed emission control devices, the ratios of their new motorcycle random selection tests should be increased to push the manufacturers to implement and comply with regulations.
(四). Currently, there are some motorcycles with modified emissions control devices and being found in the market which should be banned.
(五). For energy saving and carbon reduction purpose, in the future, paper emission certificate should be replaced by electronic version and to be circulated as supporting documents.
(六). From the research of this project, the CO and HC emissions for old motorcycles tend to decrease after proper maintenance, this project suggests, the competent authority should establish an inspection and maintenance system to ensure proper maintenance being performed regulary.
