This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Calibration of Chassis Dynamometers for Emission-and Fuel Economy Testing Using Wheel Torque Meters
Annotation ability available
Sector:
Language:
English
Abstract
A general calibration method for chassis dynamometers is an important prerequisite for obtaining comparable emissions - and fuel economy test results with reasonable confidence.
At the test facilities of Volvo, Daimler-Benz and Volkswagen the torque calibration principle was studied using rear wheel and front wheel driven cars of the above manufacturers. The driving resistances on the road or on a dynamometer can be directly extracted from the torque data measured in the driven wheels at constant car speeds. The dynamic behaviour of the test car is described by the mean torque over a certain driving cycle, thereby including also acceleration/deceleration effects. Wheel torque measuring systems can easily be adapted to vehicle types of different manufacturers.
The torque principle can also be applied to other fields than the calibration of dynamometers. Examples are vehicle performance measurements and the determination of tire losses.
Recommended Content
Authors
Citation
Schürmann, D., Johnsson, L., and Berg, W., "Calibration of Chassis Dynamometers for Emission-and Fuel Economy Testing Using Wheel Torque Meters," SAE Technical Paper 800400, 1980, https://doi.org/10.4271/800400.Also In
References
- Juneja, W.K. Horchler, D.D. Haskew, H.M. “A Treatise on Exhaust Emission Test Variability”. SAE-Paper No 770136, 1977.
- Klingenberg, H. Kinne D. and Schürmann, D. “Torque Measurements and Mechanized Driver for Correlating Exhaust Emission Test Facilities”. SAE-Paper No 770139, 1977.
- Schürmann, D. Krause N. and Kinne, D. “The Influence of Testing Parameters on Exhaust Gas Emissions”. SAE-Paper No 780649, 1978.
- Berg W., Böhringer K., Keppler G., “Rad-Drehmoment-Meßeinrichtung zur Einstel-Tung von Fahrzeug-Rollenprüfständen für Abgas- und Kraftstoffverbrauchs tests”. Technisches Messen tm 1979, Heft 9.
- ECE-R 15, Ergänzung 03, § 5.1.2.4 (ECE = Economical Commission for Europe).
- US-Federal Register 40 CFR 86.129-80 (C) (3), Sept. 12, 1977.
- Homann R., Steinhilber H., “Fahrzeug-prüfstände - Bauarten und Erfahrungen aus Konstruktion und Anwendun9”. Automobiltechnische Zeitschrift, 70. Jahrgang Nr. 2/Febr. 1968 und Nr. 3/März 1968.
- OMSAPC Advisory Circular No 55 B, Dec. 6, 1978 (OMSAPC = Office of Mobile Sources Air Pollution Control).
- Bevington P.R., “Data reduction and error analysis for the physical sciences”. Mac Graw Hill Co., N.Y. 1969.