A Quantitative Analysis of the Effects of Rolls Coupling on Fuel Economy and Emission Levels
810827
06/01/1981
- Event
- Content
- The effect of coupling chassis dynamometer rolls (front to rear) on city and highway fuel economy and emissions was investigated. A representative fleet of ten Ford certification vehicles (five passenger cars and five trucks) was tested in coupled and uncoupled roll configurations. Testing was conducted on a Clayton CTE-50 dynamometer with a hydrokinetic power absorption unit (P.A.U.) which was calibrated at a single point (50 mph).It was found that emission levels increased significantly (95% confidence level) for all constituents except city-NOx, which demonstrated mixed results. Observed fuel economy was reduced for both city and highway (3.6% and 4.0%, respectively, for a combined Metro/Highway (M/H) reduction of 3.8%) when the rolls were coupled.
- Pages
- 18
- Citation
- Downey, T., Besek, K., and Parekh, I., "A Quantitative Analysis of the Effects of Rolls Coupling on Fuel Economy and Emission Levels," SAE Technical Paper 810827, 1981, https://doi.org/10.4271/810827.