Some Effects of Experimental Vehicle Emission Control Systems on Engine Deposits and Wear

1971 ◽  
Author(s):  
Loren G. Pless
Keyword(s):  
Control Systems ◽  
Emission Control ◽  
Vehicle Emission ◽  
Experimental Vehicle ◽  
Engine Deposits

Engine Performance of Cu- and Fe-Based SCR Emission Control Systems for Heavy Duty Diesel Applications

2011 ◽  
Author(s):  
Mario Castagnola ◽  
Jonathan Caserta ◽  
Sougato Chatterjee ◽  
Hai-Ying Chen ◽  
Raymond Conway ◽  
...  
Keyword(s):  
Control Systems ◽  
Emission Control ◽  
Engine Performance ◽  
Heavy Duty ◽  
Heavy Duty Diesel

Emission of mutagenic, irritating and odorous substances from gasoline fueled vehicles with different emission control systems

Chemosphere ◽  
1988 ◽  
Vol 17 (9) ◽  
pp. 1767-1780 ◽  
Author(s):  
Katarina Victorin ◽  
Margareta Ståhlberg ◽  
Tomas Alsberg ◽  
Michael Strandell ◽  
Roger Westerholm ◽  
...  
Keyword(s):  
Control Systems ◽  
Emission Control ◽  
Odorous Substances

Effects of Biodiesel Operation on Light-Duty Tier 2 Engine and Emission Control Systems

2008 ◽  
Vol 1 (1) ◽  
pp. 119-131 ◽  
Author(s):  
Marek Tatur ◽  
Harsha Nanjundaswamy ◽  
Dean Tomazic ◽  
Matthew Thornton
Keyword(s):  
Control Systems ◽  
Emission Control ◽  
Tier 2 ◽  
Light Duty

scholarly journals Evaluating Vehicle Emission Control Policies using on-Road Mobile Measurements and Continuous Wavelet Transform: a Case Study during the Asia-Pacific Economic Cooperation Forum, China 2014

2016 ◽  
Author(s):  
Ziqiang Tan ◽  
Yanwen Wang ◽  
Chunxiang Ye ◽  
Yi Zhu ◽  
Yingruo Li ◽  
...  
Keyword(s):  
Wavelet Transform ◽  
Air Quality ◽  
Continuous Wavelet Transform ◽  
Vehicle Emissions ◽  
Emission Control ◽  
Control Policy ◽  
Asia Pacific ◽  
Vehicle Emission ◽  
Continuous Wavelet ◽  
Asia Pacific Economic Cooperation

Abstract. Vehicle emissions are major sources of atmospheric pollutants in urban areas, especially in megacities around the world. Various vehicle emission control policies have been implemented to improve air quality. However, the effectiveness of these policies is unclear, due to a lack of systematic evaluation and sound methodologies. During the Asia-Pacific Economic Cooperation (APEC) Forum, China 2014, the Chinese government implemented the strictest vehicle emission control policy in the country's history, which provided an opportunity to evaluate its effectiveness, based on our recently developed method. To evaluate the vehicle emission reduction, we used a mobile research platform to measure the main air pollutants (PM2.5, black carbon (BC), SO2, CO, NOx and O3) on the 4th ring road of the city of Beijing, combined with a continuous wavelet transform method (CWT) to separate out "instantaneous emissions" by passing vehicles. The results suggested that our measurements captured the spatial distribution and variation of atmospheric pollutant concentrations on the 4th ring road. The "instantaneous concentration" decomposed by the CWT method represents on-road emissions better than other methods reported in the literature. With this method, we found that the daytime vehicle emission of CO and NOx decreased by 28.1 and 16.3 %, respectively, during the APEC period relative to the period before APEC, and by 39.3 and 38.5 %, respectively, relative to the period after APEC. The nighttime vehicle emissions of CO and NOx decreased by 56.0 and 60.7 %, respectively, during the APEC period relative to the period after APEC. Because vehicle emissions of NOx and CO contribute considerably to the total emissions of these pollutants in Beijing, the vehicle emission control policy implementation was extremely successful in controlling air quality during APEC 2014, China.

Historical evaluation of vehicle emission control in Guangzhou based on a multi-year emission inventory

2013 ◽  
Vol 76 ◽  
pp. 32-42 ◽  
Author(s):  
Shaojun Zhang ◽  
Ye Wu ◽  
Huan Liu ◽  
Xiaomeng Wu ◽  
Yu Zhou ◽  
...  
Keyword(s):  
Emission Inventory ◽  
Emission Control ◽  
Vehicle Emission
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