| 摘要 |
PROBLEM TO BE SOLVED: To suppress drop of lubricating performance by preventing oil in which moisture is mixed from returning to an inside of a crank case as much as possible. SOLUTION: This blow-by gas reduction device consists of a blow-by gas filter 36 separating gas and liquid from blow-by gas of an engine 10 and having a sealed space 34 composed of an upper space 34A and a lower space 34B divided by an element 32 into two, a gas return passage 38 making communication between the upper space 34A and an intake system, an open close valve 40 provided at the lowermost part of the blow-by gas filter 36 and opening the lower space 34B to an outside, a liquid return passage 46 making communication between the lower space 34B and an inside of the crank case 18 at a vertical direction center part of the lower space 34B. Liquid separated from blow-by gas is stored in the lower space 34B to separate oil and moisture moreover, and oil exists at an upper part thereof is returned to an inside of the crank case 18. COPYRIGHT: (C)2006,JPO&NCIPI
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