technische universität münchen forschungs-neutronenquelle garching, zwe frm-ii neutron radioscopy...
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Technische Universität MünchenForschungs-Neutronenquelle Garching, ZWE FRM-II
Neutron Radioscopy of a car combustion engine
Johannes Brunner, Burkhard Schillinger
Technische Universität München, Physik E21Universität Heidelberg,
Institute Laue Langevin, NeutrographPaul Scherrer Institut, Neutra
Technische Universität MünchenForschungs-Neutronenquelle Garching, ZWE FRM-II
Object of investigation:
BMW combustion engine running at 1000 rpm,
driven by a 2kW electric motor
cycle time: 120 ms
Technische Universität MünchenForschungs-Neutronenquelle Garching, ZWE FRM-II
NR image:
oil dome at the piston bottom
2 mm oil jet for the piston cooling
valves (one in front of the other)
oil traces of the pistonduring up movement
Technische Universität MünchenForschungs-Neutronenquelle Garching, ZWE FRM-II
detector: ICCD camera PI-Max, Princton Instruments, (Paul Scherrer Institut)
measured at Neutrograph, Institute Laue Langevin
time resolution: 1ms (150 on chip acc)
spatial resolution: 1.8 mm
relative noise: 2%
field of view: 21.5 x 21 cm2 (852 x 833 pixel)
neutron flux: 3·109 n/cm2s
Technische Universität MünchenForschungs-Neutronenquelle Garching, ZWE FRM-II
an inverse neutron movie follows:
oil movements at the upper position of the piston
Technische Universität MünchenForschungs-Neutronenquelle Garching, ZWE FRM-II
a diffence neutron movie follows:
oil movements at the lower position of the piston