Single Cylinder Four Stroke Diesel Engine Test Bench



The “Metlor” experimental test stand, which includes a drive and brake unit, the four-stroke diesel 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 diesel engine with direct injection. The diesel 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.


  • familiarization with a four-stroke diesel engine
  • engine mounted on base plate
  • force transmission to brake via elastic claw coupling
  • Fuel hose with self-sealing quick-release coupling
  • The full load and partial load characteristic curves of the engine are plotted in experiments.
  • plotting of torque and power curves
  • determination of specific fuel consumption
  • determination of volumetric efficiency and lambda (fuel-air ratio)
  • determination of engine friction loss


Air-cooled single-cylinder diesel engine with direct injection

  • power output: 4,5kW at 2700min-1
  • compression ratio 22:1
  • bore: 80mm
  • stroke: 69mm


  • L x W x H: 1000x 800x 1200mm
  • Weight (approx.): 280kg
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