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Brake system simulation to predict brake pedal feel in a passenger car.

By Andrew J. Day, Hon Ping Ho, Khalid Hussain and A. Johnstone

Abstract

NoBraking system characteristics, brake system\ud performance and brake system component design\ud parameters that influence brake pedal `feel¿ in a\ud passenger car have been studied using the simulation\ud modelling package AMESim, in particular to model the\ud linear and nonlinear characteristics of internal\ud components. A passenger car hydraulic brake system\ud simulation model incorporating the brake pedal, booster,\ud master cylinder, brake lines and calipers has been\ud developed to predict brake system response to assist in\ud the design of braking systems with the desired brake\ud pedal force / travel characteristic characteristics to\ud create good brake pedal `feel¿. This has highlighted the\ud importance of system components, in particular the\ud master cylinder and caliper seal deformation, and the\ud operating characteristics of the booster in determining\ud the brake pedal force / travel characteristic. The potential\ud contribution of these 3 components to brake pedal `feel¿\ud improvement has been investigated, and the results of\ud the AMESim model have been verified using\ud experimental measurement data. The model can be\ud used in the future to provide an accurate prediction of\ud brake system response at the design stage thereby\ud saving time and cost

Topics: Braking system performance, Brakes, Brake pedal feel, Passenger cars, AMESim, Hydraulic brake system, Pedal travel
Publisher: SAE International
Year: 2009
OAI identifier: oai:bradscholars.brad.ac.uk:10454/3737
Provided by: Bradford Scholars
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