Dynamic Computer Techniques for Vehicle Emission Development
720211
02/01/1972
- Event
- Content
- Development of engine-vehicle prototypes for low emissions and optimum fuel control characteristics has been facilitated through use of a computerized emissions test system. Simultaneous on-line sampling of exhaust species concentrations, fuel consumption, spark advance, pressures, and temperatures provides both graphical and computed outputs of several vehicle parameters that are important to development programs.On-line display of vehicle air-fuel ratio is continuously supplied. Either of two federal driving cycles (or any random driving schedule) may be employed. Dynamic calibration, range sensing, and zero-drift correction keep operator interaction and errors to a minimum. Capability for reprocessing, plotting, and/or patching stored data provides increased computational flexibility.
- Pages
- 12
- Citation
- Stivender, D., and Kim, Y., "Dynamic Computer Techniques for Vehicle Emission Development," SAE Technical Paper 720211, 1972, https://doi.org/10.4271/720211.