Effect of North American Certification Test Fuels on Emissions from On-Road Motorcycles Environment and Climate Change Canada

Format:

Book

Conference/Event

Author/Creator:

Rosenblatt, Deborah, author.

Contributor:

Brown, Kevin

Caffrey, Cheryl

Stokes, Jonathan

Conference Name:

SAE Powertrains, Fuels & Lubricants Digital Summit (2021-09-28 : Live Online, Pennsylvania, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2021

Summary:

Chassis dynamometer testing was conducted with three on-highway motorcycles produced for the North American market comparing the use of Tier 2 to Tier 3 and LEV III certification fuels to better inform criteria pollutant and hazardous air pollutant emission inventories that can impact the environment and human health. The motorcycles were tested over the US FTP and WMTC certification test cycles as well as a sample of real-world motorcycle driving informally referred to as the Real World Driving Cycle' (RWDC). The primary interest was to better understand the emissions changes of the selected motorcycles with the use of certification fuels containing 10% ethanol compared to 0% ethanol over the three test cycles. Overall, with regards to current North American motorcycle engine and emissions control strategies, it was found that increasing emissions of hydrocarbon species including carbonyls and volatile organics (VOC) correspond with the increasing degree of valve overlap employed. The use of variable valve timing was found to significantly offset increases in these compounds over the two certification cycles studied and the real world driving sample. From this study, it was apparent that the WMTC and the RWDC include a broader range of engine operation than the current FTP drive cycle, and thus offer an updated understanding of recent model year North American motorcycle in-use emissions for inventory purposes. The wider range of operation in the WMTC and RWDC cycles can be seen to be generally translated into higher emission rates of criteria pollutants and in particular oxides of nitrogen (NOx) and carbon monoxide (CO) compared to the FTP. The use of 10% ethanol Tier 3 and LEV III fuels compared to Tier 2 (0% ethanol) resulted in modest reductions in CO, hydrocarbons and carbon dioxide with significant increases in acetaldehyde and significant changes in C6 to C8 VOC emissions corresponding to the changing aromatic levels of the three test fuels

Notes:

Vendor supplied data

Publisher Number:

2021-01-1225

Access Restriction:

Restricted for use by site license