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Passenger Vehicle Braking Performance with a Disabled Vacuum Power Booster
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Abstract
When the vacuum-powered brake booster in a passenger vehicle becomes disabled, the brake force gain of the system is reduced significantly, and the brake pedal force required to lock the tires increases beyond the ability of some adults. In such cases, the maximum braking deceleration acheived by those individuals will be something less than the upper boundary as defined by available traction.
This paper's goal is to review the design of vacuum boosters, the literature concerning human ability to depress a brake pedal, and FMVSS 105 requirements which must be met by vehicle manufacturers, and to present performance data with and without the booster operational for four passenger vehicles. Furthermore, the application of this information to accident investigations involving disabled boosters will be discussed.
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Citation
Bartlett, W., "Passenger Vehicle Braking Performance with a Disabled Vacuum Power Booster," SAE Technical Paper 970946, 1997, https://doi.org/10.4271/970946.Also In
References
- Fisher, Franklin G. Cook H. Oldham F. Gloss R. Eidemiller R. “Optimized Brake Inspection Technical Volume,” DOT Report No. HS-803 375 U. S. Department of Transportation, National Highway Traffic Safety Administration Washington, D.C. 1977
- Gillespie, Thomas D. Fundamentals of Vehicle Dynamics Society of Automotive Engineers 1-56091-199-9 Warrendale, Pennsylvania 1992
- Bosch Automotive Handbook 3rd Robert Bosch GmbH 01-56091-372-X Stuttgart, Germany 1993
- Rossigno, L.P. Horsting J.J. Carré J.J. “Design of Lightweight Vacuum Power Brake Boosters,” SAE Paper No. 820024 Society of Automotive Engineers Warrendale, Pennsylvania 1982
- Chilton's Guide to Engine Repair and Rebuilding Freeman Kerry Rivele Richard Chilton Book Company 0-8019-7643-X Radnor, Pennsylvania 1985
- Baker, A.K. Vehicle Braking Pentech Press Limited 0-7273-2202-8 London, England 1986
- 1995 SAE Handbook Society of Automotive Engineers 1-56091-585-4 Warrendale, Pennsylvania 1995
- Highway & Vehicle Safety Report 22 8 Stamler Publishing Company 0161-0325 Branford, Connecticut 1995
- Monthly Defect Investigation Report U.S. Department of Transportation, National Highway Traffic Safety Administration June 1996
- U.S. Department of Transportation, National Highway Traffic Safety Administration 49 CFR 571.105, Federal Motor Vehicle Safety Standard Number 105 Hydraulic Brake Systems
- Woodson, Wesley E. The Human Factors Design Handbook McGraw-Hill Book Company 0-07-071765-6 New York, New York 1981
- Radlinski, Richard W. Price James I. “The Brake Pedal Force Capability of Adult Females,” U.S. Department of Commerce, National Bureau of Standards Washington, D.C. 1970
- Mortimer, R.G. Segel L. Dugoff H. Campbell J.D. Jorgeson C.M. Murphy R.W. “Brake Force Requirement Study: Driver-Vehicle Braking Performance as a Function of Brake System Design Variables,” Highway Safety Research Institute Report No. HuF-6a Highway Safety Research Institute Ann Arbor, Michigan 1970
- Eaton, Dennis A. Dittmeier Henry J. II “Braking and Steering Effort Capabilities of Drivers,” SAE Paper No. 700363 Society of Automotive Engineers Warrendale, Pennsylvania 1970
- Valentine Research Inc. 10280 Alliance Road, Cincinnati, Ohio
- Kim Hyung Dae Rhim Younchul “A Study on the Characteristics of Automotive Brake Pedal Force,” SAE Paper No. 923879 Society of Automotive Engineers Warrendale, Pennsylvania 1992
- Brake Pedal Effort Gage Kent Moore Automotive Group 29784 Little Mack, Roseville, Michigan
- Kroemer, K.H. Eberhard “Pedal Operation by the Seated Operator,” SAE Paper No. 720004 Society of Automotive Engineers Warrendale, Pennsylvania 1972
- Limpert, Rudolf Brake Design and Safety Society of Automotive Engineers 1-56091-261-8 Warrendale, Pennsylvania 1992
- Automotive Brake Systems 1st Robert Bosch GmbH 01-56091-708-3 Stuttgart, Germany 1995