It flows back the blow-by

摘要

PROBLEM TO BE SOLVED: To provide a PCV device for an internal combustion engine having improved workability during maintenance and improved performance of separating an oil component from blow-by gas.;SOLUTION: The PCV device 1 for the internal combustion engine 2 for circulating the blow-by gas in a crank case 3a to a suction system comprises a circulation passage 19, an upstream side gas-liquid separating chamber 14a and a downstream side gas-liquid separating chamber 14b partitioned with a partition wall portion 14c and formed in a head cover 10 for separating the oil component from the blow-by gas during the passage of the blow-by gas, and a PCV valve 20 detachably mounted on the head cover 10 at its outside and extending across the upstream side gas-liquid separating chamber 14a to the downstream side gas-liquid separating chamber 14b in the state of passing through a partition wall portion 13c for communicating the upstream side gas- liquid separating chamber 14a with the downstream side gas-liquid separating chamber 14b.;COPYRIGHT: (C)2004,JPO