03-12-2012, 04:15 PM
Energy Conversion Management
brakes.ppt (Size: 2.39 MB / Downloads: 38)
Hydraulic System Configurations
There are two layouts of hydraulic brake systems used in cars and light trucks.
Front/Rear hydraulic split:
Also called axle by axle, vertical, and some times “black and white”.
Diagonal Split:
Also called criss-cross.
The type of split is only significant in the event of a hydraulic system failure.
Diagonal Split System
In a diagonal split system, one brake line is run to
each rear brake and one to each front brake.
The connections are such that the left front and the right rear brake are on one circuit and the right front and left rear are on the other circuit
Brake Linings
Brake linings are probably the most mis-understood part of a brake system.
The output of any brake is directly related to the coefficient of friction (µ) between the lining and the disc or drum.
The challenge is knowing what the instantaneous value of µ is during any given stop.
Any design calculations you do, go right out the window if the lining you use does not have the µ value you assumed.
Too light
2006 DCAE program involved a Hemi powered Grand Cherokee.
One team used much smaller rear brakes and rotors to save a few pounds on a 3200 lb vehicle with 500 hp.
The vehicle went off the end of the main straight at over 100 mph on the third lap because of brake failure.