Hyundai Tucson Owners & Service Manuals

Hyundai Tucson: Crankcase Emission Control System / Description and Operation

- Description

A : Crankcase pressure regulating valve (PRV)
B : Breather hose
C : Intake hose
D : Air flow
E : Intake manifold
F : Cylinder block


① Blow-by gas flow② Blow-by gas inflow to the cylinder head cover throungh the cylinder block & head & chain cover③-1 In the partial load area, blow-by gas inflow to the intake manifold through the PRV valve which in the head cover.③-2 In the full load area, blow-by gas inflow to the intake hose through the PRV valve which in the head cover.④ Mix of intake hose and blow-by gas. Blow-by gas is circulated by the ③-1, ③-2 procedure.⑤ Combustion the air-flow mixture.⑤-1 Air flow to cylinder block.
    Crankcase Emission Control System
    ...

    Positive Crankcase Ventilation (PCV) Valve
    - Description Pressure Regulating Valve (PRV) is installed to prevent the over pressure of combustion gas through the piston ring and onto the crankcase. - Operating Principle Engine cond ...

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