CRANKCASE EMISSION CONTROL SYSTEM
Emission Control
(Aux.
Emission Control
Devices)
(1 ) Air cleaner case
(2) PCVvalve
(3)
Throttle body
(4) Intake manifold
(5) Oil filler cap
B2H3534D
(6) Crankcase
(7) Case
(8) Valve
(9)
Spring
(1 0) PCV valve
(A) Part-throttle condition
(B) Wide-open-throttle condition
C: Fresh air
D: Mixture of air and blow-by gas
E: Blow-by gas
EC-7