Patent ID: 6847869
Filing Date: 2005-01-25
Classification: B60T,F16D,Y10T

Abstract:
1. A software-based apparatus for determination of brake shoe/pad wear, said software-based apparatus comprising: a) a friction brake effort means disposed to receive and combine a brake cylinder pressure signal and a brake cutout indication signal for determining friction brake effort and generating a friction brake effort signal; b) a signal multiplication means connected to receive and combine said friction brake effort signal with a car speed signal for determining an amount of energy being absorbed during a software-based logic cycle and generating an absorbed energy signal; c) an integration with respect to time means connected to receive and combine said absorbed energy signal with a brake shoe/pad changeout signal for summing a resultant energy and generating a friction energy summation signal; and d) an evaluation of energy absorption level means connected to receive and combine said friction energy summation signal with a brake shoe energy absorption limit signal for generating at least one of a brake shoe inspection request signal and a brake shoe/pad remaining signal.