The Brake Inertia Dynamometer is arranged ‘in-line’, with the main elements being flywheel assemblies, brake test area, DC or AC machine, and a disc brake.
Construction of the Brake Inertia Dynamometer
A system of flywheels is mounted onto a common central shaft to simulate the mass of the test vehicle
The minimum inertia is formed by the inertia of the shafts, couplings, and disc brake
Variable inertia is obtained by engaging the appropriate flywheels
Precise inertia simulation is obtained by ‘trimming’ using the DC or AC machine
The flywheels are engaged manually with a unique support and transfer system or automatically, using electromagnetic clutches
A headstock is provided to mount the brake drum or disc
A tailstock is supplied to support the brake shoe or calliper assembly and to transmit the reaction torque to a high precision load cell
Speed is measured by an optical encoder and via a tachogenerator
The tailstock traverses on tee-slotted rails for alignment with the brake drum or calliper
Main Features:
Single or double work-heads
Variable inertia for vehicle mass simulation
Low friction driveline – minimum drag
High accuracy braking torque measurement and control
High accuracy deceleration measurement and control
