Assertion: ignition | /r/CapableOf | occur crankshaft rotation
Facets:
value: to 24°
type: OTHER
Source sentences:
text: Note that ignition occurs 20° to 24° of crankshaft rotation before the piston reaches top-dead-center (TDC), but that the peak combustion pressure doesn't develop until 15 to 20° after TDC.