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Figure 5
Image sequence from the intake valve starting at the TDC piston position at 20° crankshaft rotation increments, showing significant wear of the camshaft lobes at 1850 r.p.m. (exposure time: 1 ms). The shape of the lobes was found severely distorted due to ageing or poor lubrication, thus preventing the intake valve from dropping further into the cylinder from angles 60° to 140°.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
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