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Experimental Ability:
Single or multi-cylinder engines
Naturally aspirated or supercharged engines
Measure the air flow of the engine, hose, or leads
Air Compressors
Research and development.
The unit is designed for blow or suction induced flow and can be assembled for operation in either the upward or downward mode, whichever is most convenient. The Aeroweb honeycomb matrix is suspended within a cylindrical, aluminum housing with the skirt of the matrix immersed in an annular oil reservoir in the base which serves both as an air seal and a viscous damper. A set of weights is provided with the instrument to facilitate static calibration of the strain gauge with an accuracy of 2%. The matrix is mounted on an axle in the frame and supported by precision ball bearings while the torque arm connected to the axle acts on a Wheatstone Bridge strain gauge transducer. Cussons Display Unit, used in conjunction with the swirl meter, is a mains operated instrument complete with power supplies, which converts the strain gauge measurement into a four element, LED digital readout.
Application:
In automotive and truck size engines for instance, a pressure drop of 254 mm water gauge is normally used. The illustration shows a typical test rig layout arranged for downward air flow, in which the clients manometer registers a constant pressure drop across the model which must always be high enough to ensure fully turbulent flow in order that the results can be applied to his own particular engine configuration.
The system is provided with our standard software plus National Instruments drivers should the client wish to develop the system further. The engine is modified at our factory to allow the fitting of the pressure transducer. The system uses a charge amplifier that conditions the cylinder pressure transducer signal at up to 30kHz. A standard Ethernet connection allows data streaming to a PC running the PV software for processing, displays.
Applications:
Engine parameters easily configured and displayed on screen.
Transducer parameters easily configured and displayed on screen.
User friendly, easy to configure and use.
Single pressure channel allowing data acquisition of in cylinder combustion pressure.
Selectable display of crank angle v cylinder pressure or classic PV diagram.
Output of acquired data in csv format allowing recorded data to be post processed in other software applications.
Data acquisition of engine speed/crankshaft index position.
Selectable display of crank angle v cylinder pressure or classic PV diagram.
