Comparison on Combustion and Emissions Performance of Biodiesel and Diesel in a Heavy-duty Diesel Engine: NOx, Particulate Matter, and Particle Size Distribution
- Delivery
- Available on this site
- Format
- Price
- Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
- Publication code
- 20239243
- Paper/Info type
- Other International Conferences
- Pages
- 1-15(Total 15 p)
- Date of publication
- Aug 2023
- Publisher
- JSAE & SAE
- Language
- English
- Event
- 2023 P, E&L
Detailed Information
| Category(E) | EC1 Testing and Emissions Measurement |
|---|---|
| Author(E) | 1) Khanh Duc Cung, 2) Gina Buffaloe, 3) Alexander Michlberger, 4) Thomas Briggs, 5) Chris Bitsis, 6) Edward Mike Smith, 7) Imad Khalek |
| Affiliation(E) | 1) Southwest Research Institute, 2) Southwest Research Institute, 3) Southwest Research Institute, 4) Southwest Research Institute, 5) Southwest Research Institute, 6) Southwest Research Institute, 7) Southwest Research Institute |
| Abstract(E) | Low carbon emissions policies have recently driven more interest in using alternative cleaner fuels, including biodiesel, for transportation. Biodiesel can be operated efficiently in an internal combustion engine (ICE) with the potential of lower engine-out emissions, such as soot, thanks to its difference in fuel properties compared to diesel fuel. This study selected a heavy-duty (HD) single-cylinder engine (SCE) platform to test biodiesel with 20% and 100% biodiesel content by volume, namely B20, and B100. Test conditions include a parametric study of exhaust gas recirculating (EGR), and the start of injection (SOI) performed at low and high-load engine points. In-cylinder pressure and engine-out emissions (NOX and soot) measurements were collected to compare diesel and biodiesel fuels. Exhaust particulate matter (PM) emissions were collected to solid particle mass and particle size distribution (PSD) by a micro-soot sensor (MSS) and a Cambustion different mobility spectrometer (DMS500), respectively. Fuel consumption was higher with B20 and B100 than with diesel. However, soot emissions were reduced significantly with biodiesel fuels. B20 and B100 also have lower PSD curves, which indicates a smaller total particle count at a given mobility diameter (ranging from 6 nm to 1000 nm). PSD of all fuels shows a well-known bimodal characteristic. A slight difference in nitrogen oxides (NOX) emissions could be due to the difference in the physio-chemical properties of biodiesel and diesel fuels. Other engine-out emissions of carbon monoxide (CO) and unburned hydrocarbon (UHC) are lower with biodiesel fuels than diesel. High-speed combustion analysis suggests that minor modification in injection strategy is potentially needed for biodiesel fuels to deliver a diesel-like combustion profile, as seen by the apparent heat release rate (AHRR) curve. Overall, findings from current study confirm the drop-in capability in modern diesel engines of biodiesel with similar diesel-like efficiency and lower PM emissions. |
