The experimental test stand, which includes a drive and brake unit, the four-stroke petrol engine is highly suitable for use in teaching the fundamentals of engine functioning and measurement.
The engine used here is an air-cooled single-cylinder four-stroke petrol engine with external carburation. The engine is started and slowed down by an electric motor mounted in the  unit. A flywheel fan affects the air-cooling. The brake unit is connected by way of a elastic claw coupling.
The engine is prepared for measurement of the cylinder pressure for indication. It includes a sensor to measure the exhaust gas temperature and a connection to measure the intake pressure. Both sensors, ignition cut-off and fuel supply are connected to the  test stand.
The full load and partial load characteristic curves of the engine are plotted in experiments.
FEATURES:
•    familiarization with a four-stroke petrol engine
•    plotting of torque and power curves
•    Bhp Measurement
•    Brake Thermal Efficiency
•    Fuel Consumption Measurement
•    Air Intake Measurement
•    determination of specific fuel consumption
•    determination of volumetric efficiency and lambda (fuel-air ratio)
•    determination of the frictional power of the engine
 
SPECIFICATION:
Air-cooled single-cylinder petrol engine
•    power output: 7,5kW at 3000min-1
•    bore: 89mm
•    stroke: 63mm