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On the Correlation of Road Retardation and Dynamometer Measurements for Lorries and Trailer Combinations
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Abstract
Heavy lorries and trailer combinations cause many serious traffic accidents. There in Finland alone have been approximately100 killed per year by heavy duty vehicles in 1990's. Improvements in inspection methods of brake systems increase traffic safety. In Finland dynamometer measurements have been used since 1960´s, and its advantages are stable measuring conditions, high repetability and short inspection time. The Finnish Traffic Office and the Finnish Motor Vehicle Registration Centre have been interested in correlations of road retardation and dynamometer measurements and therefore established Dynamet-brake research project in 1993.
This paper contains a research which aims to find out correlations of retardation prediction for lorries and trailer combinations by comparing road braking tests and dynamometer measurements, and secondly to improve the dynamometer measurement system at inspection stations. The research material consists of over 200 road brakings and nearly 150 dynamometer measurements. The road brakings and dynamometer measurements were performed at the Finnish Motor Vehicle Registration Centre's inspection station in spring and early summer 1995. The test vehicle used was a 3-axle lorry and a trailer equipped with traditional air pressured brakes, steel leaf springs and loaded by logs.
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Haataja, M. and Leinonen, T., "On the Correlation of Road Retardation and Dynamometer Measurements for Lorries and Trailer Combinations," SAE Technical Paper 982772, 1998, https://doi.org/10.4271/982772.Also In
References
- Mitschke M 1995
- Zomotor A 1987
- Gillespie T D 1992 Fundamentals of Vehicle Dynamics Society of Automotive Engineering. Inc 400 Commonwealth Drive, Warrendale, PA 495
- Siegret E Glasner E-C Berg P Becker R Pfäffle J 1995 Automotive brake systems Robert Bosch GmbH Stuttgart 192
- Helms H Mitschke M Stumpe W 1977
- Engfer O Stumpe W 1974
- Stumpe W 1980
- Drometer K 1984
- Klug H-P 1990
- Burckhardt M 1992
- Reimpel J Hoseus K 1992
- Mitschke M 1990
- Forsmalm G 1991 Investigations of Drum Brakes Chalmers University of Technology Doctoral thesis Göteborg 167
- Fitch JW 1994 Motor truck engineering handbook Fourth SAE, Inc. Warrendale, PA 443
- Wong JY 1978 Theory of ground vehicles John Wiley&Sons, Inc. New York 330
- SAE 1992 ABS Traction Control & Advanced Brake Systems Warrendale, PA 125
- SAE 1991 Vehicle Hydraulic Systems and Digital/Electro-hydraulic Controls Warrendale, PA 119
- SAE 1990 ABS Traction Control and Brake Components Warrendale, PA 160
- SAE 1990 Commerial Vehicle:Electronics, Diagnostics and Service Systems Warrendale, PA 126
- SAE 1989 Vehicle Dynamics: Related to Braking and steering Warrendale, PA 124
- AMSE 1988 Analysis of the feasibility of replacing asbestos in automobile and truck brakes New York 123
- Radlinski RW 1987 Benefits of Front Brakes on Heavy Trucks Warrendale, PA 11
- SAE 1987 Sensors & Actuators Warrendale, PA 147
- SAE 1984 A new look at medium duty hydraulic brakes Warrendale, PA 39
- SAE 1984 Worldwide braking trends: Medium and heavy duty trucks Warrendale, PA 44
- SAE 1980 Why an Air Disc Brake for Heavy Trucks? Warrendale, PA 41
- Newcomb TP Spurr RT 1967 Braking of road vehicles Chapman and Hall Lontoo 292
- Haataja M 1994
- Haataja M Leppälä H 1996
- Haataja M 1996