Brake Unit 75kW for 4 Cylinder Engines.
Brake Unit 75kW for 4 Cylinder Engines
Setting up a power test stand
for internal combustion engines with a power output of up to 75kW
requires two main components: The control and load mechanism and a
choice of test engine: petrol engine or diesel engine. The engine to be
investigated is connected to the using a coupling with a jointed shaft.
The
main function to provide the required braking power, which is generated
by an air-cooled eddy current brake. The braking torque can be
precisely adjusted using the exciting current. It is measured indirectly
using a force transducer. For this purpose, the entire brake system is
mounted in floating bearings.
On the base frame there is a
quietening vessel with an intake air duct for the combustion air. The
quantity of air taken in is measured in the duct.
The rotating
control cabinet contains digital displays for speed, torque, volumetric
flow of the intake air and temperatures (exhaust gas, oil, cooling water
- inlet and outlet - fuel, intake air). Data is transmitted between the
brake unit and the engine via a data cable, which connects the control
cabinets for the two units. All measuring signals are present in
electrical form and can be stored and processed using the PC data
acquisition function supplied. Data is transmitted to the PC using a USB
interface.
In addition to the standard safety features (e.g. oil
pressure, temperature limiter), the brake unit contains a limit switch
to monitor whether the brake and the engine are correctly connected
