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Optimization of Brake Pedal Feel and Performance for Dual Air Over Hydraulic System on Light Commercial Vehicles
Technical Paper
2010-01-1888
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In current scenario, Light Commercial Vehicle segment (7 ton -
9.6 ton) is gradually experiencing a shift in the focus from being
just a goods carrier to a vehicle which is developed to take care
of driver's safety and comfort in terms of better ergonomics
and aesthetics. As compared to their conventional counterparts the
new generation Light Commercial Vehicles are better equipped and
tuned to cater to the changing needs of the consumers.
In view of this, refinement at the sub system level is becoming
far more critical. On the same lines, the present work discusses a
refined brake system for Light Commercial Vehicles where the
conventional pneumatic system is replaced with Dual Air Over
Hydraulic (DAOH) to achieve cost and weight advantages without
compromising on its performance. However, during the development
process, a lot of issues were observed with respect to the braking
performance and the brake pedal feel. The proposed work focuses
specifically on analyzing the cause of such problems and suggesting
a solution by optimization of this alternate braking system to
achieve better overall performance Vis-à-Vis current system with
significant reduction in weight by almost 20% and cost by 5%.
'DAOH' (Dual Air Over Hydraulic) with foundation brake
configuration of front - disc and rear - drum is being developed
for 7 ton - 9.6 ton gross vehicle weight vehicles. Particularly
optimization of pedal ergonomics and pedal characteristics
(utilization of pedal travel) is carried out to achieve enhanced
performance in terms of: Stopping distance, Deceleration, Brake
pedal feel and driving confidence.
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Authors
Citation
Keerthi, M., Shete, S., Jadhav, N., Nandkeolyar, K. et al., "Optimization of Brake Pedal Feel and Performance for Dual Air Over Hydraulic System on Light Commercial Vehicles," SAE Technical Paper 2010-01-1888, 2010, https://doi.org/10.4271/2010-01-1888.Also In
References
- Gillespie, T.D., “Fundamentals of Vehicle Dynamics,” SAE International, Warrendale, PA, ISBN 978-1-56091-199-9, 1992, doi:10.4271/R-114.