| 摘要 |
PURPOSE:To remove a stain by the blow-by gas on an inner wall section by spraying the air from an air cleaner via a bypass pipe immediately before the junction of a blow-by pipe on the inner wall section of an intake manifold. CONSTITUTION:One end section 2b of a blow-by pipe 2 serving as a communicating pipe communicated to an engine inner chamber except a combustion chamber is connected to one of the air cleaner device 3 of an engine and an intake manifold 4 in a blow-by gas circulating device 1. One end section 8a of a bypass pipe 8 is connected to the air cleaner device 3. The other end section 8b of the bypass pipe 8 is connected to the intake manifold 4 immediately before a junction 4a between the other end section 2a of the communicating pipe 2 and the intake manifold 4. Air is sprayed from the bypass pipe 8 to the inner wall section 4b of the intake manifold 4, and a stain by the blow-by gas on the inner wall section 4b is blown off. |
