MECHANICAL
01–10–16
CUT-OFF SEAL CONSTRUCTION
CHU011011910S08
• The zero-overlap side exhaust port system has structurally reduced the mixing of exhaust gas in the intake air
process. When the position of the rotor is at top dead center (TDC) of exhaust, the intake ports and exhaust
ports are closed by the side surfaces of the rotor. However, exhaust gas flows into the intake air port passing
through the minute gap between the rotor and the side housing. To prevent this, exhaust gas has been blocked
from flowing into the intake air process by a cut-off seal set between the oil seal and side seal.
• A gas seal is maintained against the housing friction surface by the addition of a spring between the cut-off seal
and the rotor.
End Of Sie
OIL SEAL GROOVE
CUT-OFF SEAL SPRING
CUT-OFF SEAL
SIDE SEAL GROOVE
OIL SEAL
INTERNAL GEAR
SIDE SEAL
CUT-OFF SEAL
EXHAUST
GAS
WITH CUT-OFF SEAL
WITHOUT CUT-OFF SEAL
CHJ0110S017
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