Page 345 - (DK) The Ultimate Visual Dictionary 2nd Ed.

EARLY ENGINES
CYCLE OF A FOUR-STROKE INTERNAL 16-HORSEPOWER HUMBER ENGINE, 1911
COMBUSTION ENGINE
Brass housing for Inlet port
INDUCTION STROKE (“SUCK”) ignition cable Water pipe
Inlet valve Valve cap Spark plug
Exhaust
port closed Inlet port Side valve Pair-cast cylinder
opens (inlet valve)
Fan bracket
Fuel and air Water
(the “charge”) jacket
Piston sucked into Valve spring
moves cylinder Tappet
downward
Counterweight Timing chain

Crankshaft Crankpin Timing chest
COMPRESSION STROKE (“SQUEEZE”)
Exhaust port
closed
Charge Inlet Crankcase Starting
compressed port handle
by piston closed
Flywheel Oil sump
Piston Camshaft Oil pump
Connecting moves
rod (con-rod) upward
DAIMLER DOUBLE-SLEEVE VALVE ENGINE, 1910
OUTER SLEEVE
Spark plug socket Junk ring VALVE
Cylinder head Inlet port Oil
POWER STROKE (“BANG”) groove
Exhaust port Inlet manifold
Spark plug Inlet port
closed Outer sleeve valve Water jacket
Exhaust port
closed Cylinder wall Inner sleeve
Charge ignited valve
Explosion by spark plug Piston
pushes piston Carburetor
downward

Big end INNER SLEEVE
Engine VALVE
bearer

EXHAUST STROKE (“BLOW”) Sleeve
port
Exhaust Inlet port
valve closed
Exhaust Burned
port opens gases forced
out of cylinder
Piston moves
upward

Flywheel Eye for connecting
con-rods to secondary crankshaft

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