The Effect of Fuel Processes on Heavy Duty Automotive Diesel Engine Emissions

952350

10/01/1995

Event
1995 SAE International Fall Fuels and Lubricants Meeting and Exhibition
Authors Abstract
Content
The effect of fuel quality on exhaust emissions from 2 heavy duty diesel engines has been measured over the ECE R49 test cycle. The engines were selected to represent technologies used to meet Euro 1 and 2 emission standards (1992/93 and 1995/96); engines 1 and 2 respectively. The test fuels were prepared by a combination of processing, blending and additive treatment.
When comparing the emissions from engines 1 and 2, using base line data generated on the CEC reference fuel RF73-T-90, engine technology had the major effect on emission levels. Engine 2 reduced both particulate matter (PM) and carbon monoxide (CO) levels by approximately 50%, with total hydrocarbon (THC) being approximately 75% lower. Oxides of nitrogen (NOx) levels were similar for both engines.
The variations in test fuel “quality” had marginal effects on emissions, with the two engines giving directionally opposite responses in some cases. For instance, there was an effect on CO and NOx but where one engine showed a reduction the other gave an increase. There were no significant changes in THC emissions from either engine when operating on any of the test fuels. When the reference fuel was hydrotreated, engine 1 showed a trend towards reduced particulate and NOx but with CO increasing. Engine 2 also showed a trend for reduced particulate levels, with an increase in NOx and no change in CO. Processing to reduce the final boiling point of the reference fuel showed a trend towards reduced particulate emissions with CO increasing on engine 1 but decreasing on engine 2.
Meta TagsDetails
DOI
https://doi.org/10.4271/952350
Pages
10
Citation
Reynolds, E., "The Effect of Fuel Processes on Heavy Duty Automotive Diesel Engine Emissions," SAE Technical Paper 952350, 1995, https://doi.org/10.4271/952350.
Additional Details
Publisher
Published
Oct 1, 1995
Product Code
952350
Content Type
Technical Paper
Language
English