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placed as near the crankpin axis as possible removed each time the crankshaft is repositioned left in place for all four readings reset to zero for all four readings
twice the crankshaft speed half the crankshaft speed the same speed as that of the crankshaft a speed independent of that of the crankshaft
只有semi-staticDL/UL assignment 时,在“DL”符号上要监听； 既有semi-staticDL/UL assignment, 又有dynamicSFI时 semi-static “flexible ”+dynamic “UL”，要监听。 既有semi-staticDL/UL assignment, 又有dynamicSFI ，但是dynamicSFI 没收到 既 有 semi-staticDL/UL assignment, 又 有dynamicSFI时，仅在semi-static “flexible ”要监听。
advantages disadvantages power advantages power disadvantages
tension load twice each crankshaft revolution compression load during power and compression strokes inertia load once every four crankshaft revolutions bending loads at bottom and top dead center
只有semi-staticDL/UL assignment 时,在“DL”符号上要监听； 既有semi-static DL/UL assignment, 又有dynamic SFI时semi-static “flexible ”+dynamic “UL”，要监听。 既有semi-static DL/UL assignment, 又有dynamic SFI，但是dynamic SFI没收到 既有semi-static DL/UL assignment, 又有dynamic SFI时，仅在semi-static “flexible ”要监听
shrunk into expanded into extended into designated into
one half crankshaft speed in a two-stroke cycle diesel engine crankshaft speed in a two-stroke cycle diesel engine two times crankshaft speed in a two-stroke cycle diesel engine one-fourth times crankshaft speed in a four-stroke cycle diesel engine
bedplate, connecting rods crankshaft, the connecting rods frames, crossheads crankshaft, the cylinder
to revolve revolved revolving to be revolved
once every crankshaft revolution once every two crankshaft revolutions once every piston stroke twice every piston stoke
once every crankshaft revolution once every two crankshaft revolutions once every piston stroke twice every piston stroke
through bolts jack bolts tap bolts fitted bolts
engine support vibration isolator detuner or viscous fluid damper lightened crankshaft flywheel spherically seated crankshaft bearing
opposed to the crankshaft rocking couple resonant with the crankshaft natural frequency critical fore and aft crankshaft vibrations horizontal whipping motions of the crankshaft
two strokes of the piston four strokes of the piston one revolution of the crankshaft four revolutions of the crankshaft
laying a straight edge across the crank webs at the crankpin and measuring the distanceto the crankpin in two places measuring the crank drop on either side of each crank throw while the crankshaft isslowly rotated through one revolution rotating the crankshaft through one revolution, pausing each 90oof rotation to measurebearing clearances, top and bottom taking micrometer reading between the crank cheeks opposite the crankpin every 90°of crank angle rotation
being shrunk into to be shrunk into to be shrunk with shrinking into
engine to the bed rocker arm to the camshaft crankshaft to the gear train piston to the crankshaft
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