Fundamentals Flashcards
What energy conversion takes place in a brake system?
Kinetic energy into heat energy
What is purpose of brake system?
Enable operator to reduce vehicle speed
Work formula(s)?
Work (W) = Force(F) x Distance(D)
Force(F) = Work(W) / Distance(D)
Distance = Work(W) / Distance(D)
Torque Formula?
Torque(T) = Force(F) x Length(L)
What does law of conservation of energy state?
Energy can neither be created nor destroyed.
What are the three ways energy is turned into heat?
Conduction
Convection
Radiation
Why do discs Azande drums consist of much more material then is required for wear?
Strength
Used as a heat sink
Difference between static and kinetic friction?
Kinetic- two objects are moving relative to one another
Static- both objects are not moving relative to the other.
Two key aspects about liquids and liquid systems?
Liquids are virtually non Compressible
Pressure is same everywhere in system
Pressure formula
Pressure(P) = Force(F) / Area(A)
How do you increase output force without increasing input force in hydraulic system?
Increase size of output piston
Decrease size of input piston
Brake fluid must be able to withstand temperatures of what without boiling?
200 C
Brake fluid must have a ____ viscosity
Low
7 factors to consider in brake fluid
Boiling point Viscosity
Non-corrosive Hygroscopic
Lubrication
Stability Miscibility
What brake fluids can be mixed together
DOT 3, DOT 4, DOT 5.1
