| 摘要 |
PROBLEM TO BE SOLVED: To promote evaporation of fuel component mixed in engine oil with a low cost device in a direct injection engine with a supercharger. SOLUTION: This device includes a ventilation air supply pipe 27 connected to an intake system 11 and a chain chamber 10, and a second blow-by gas re-circulation pipe 28 connected to a valve system chamber 8 and the intake system 11. The ventilation air supply pipe 27 is communicated to a common intake pipe 30 between a compressor 13 of the supercharger and an intercooler 14 at an upstream end and is communicated to the chain chamber 10 at a downstream end. A check valve 31 is installed in a middle of the ventilation air supply pipe 27. The second blow-by gas re-circulation pipe 28 is communicated to an oil separation chamber 33 formed in the valve system chamber 8 and is communicated to a common intake pipe 34 between an air cleaner 12 and the compressor 13. COPYRIGHT: (C)2006,JPO&NCIPI
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