Students: |
David Weller, William Swain, Howard Hess |
Faculty/Supervisors: |
Prof. Joseph Perez, Department of Chemical Engineering Prof. André Boehman, Director of the Combustion Laboratory |
Objective: |
To determine the performance and emissions benefits of using vegetable oil lubricants in diesel engines |
Approach: |
Fully formulated high oleic sunflower oil (HOSO) lubricants have been tested in both conventional and ceramic-coated engine configurations. The engine is a Yanmar TS-180 single cylinder IDI diesel engine. Particulate mass, composition and morphology have been examined. |
Results: |
he vegetable oil-based lubricant leads to lower total particulate mass emissions under some engine operating conditions and leads to significant differences in particulate morphology and composition under light load conditions. Presented below are tables of SOF and VOF measured in the particulate emissions from the Yanmar engine. The Test Matrix used here followed the ISO 8178 Type E3 Test Protocol, although the power ratings were decreased below the ISO specifications. The VOF and SOF measurements so the same trends with engine configuration and oil type. Dramatic differences in particulate composition are observed between the vegetable oil lubricant and conventional lubricant for either engine type and between the ceramic-coated and conventional engines for either lubricant type. |
Modified ISO 8178 Type E3 Test
Mode 1 |
Mode 2 |
Mode 3 |
Mode 4 |
|
| Speed (RPM) | 2200 | 2002 | 1760 | 1386 |
| % Rated Speed | 100 | 91 | 80 | 63 |
| Power (HP) | 12.26 | 8.77 | 5.32 | 2.03 |
| % Rated Power | 81.7 | 58.5 | 35.5 | 13.5 |
The following publications have been written on our vegetable oil studies in diesel engines:
Weller, D. E., W. H. Swain, H. Hess, A. L. Boehman and J. M. Perez. Changes in Particulate Composition and Morphology When Using Vegetable Oil Lubricant in a Low Heat Rejection Engine. Society of Automotive Engineers Technical Paper No. 1999-01-0975. Presented at the 1999 SAE International Congress and Exposition, Detroit, MI, March, 1999.
Boehman, A. L., W. H. Swain, D. E. Weller and J. M. Perez. Use of Vegetable Oil Lubricant in a Low Heat Rejection Engine to Reduce Particulate Emissions. SAE paper no. 980887 presented at the 1998 International Congress and Exposition, Detroit, MI, February, 1998.