| 摘要 |
PROBLEM TO BE SOLVED: To provide a blow-by gas control device capable of reducing the number of part items. SOLUTION: The blow-by gas control device is provided with a first passage 29 communicating to an inside of an engine body 1a from an intake air passage part 15a in an upstream side of a throttle valve 12 in the intake air passage 15 of the engine 1, a second passage 33 communicating to a downstream side intake air passage part 15b of the intake air passage 15 from the inside of the engine body 1a, and a flow rate control valve 23 adjusting passage section area according to intake negative pressure of the downstream side intake air passage part 15b in the second passage 33 and blocking reverse flow from the inside of the engine body 1a to the upstream side intake air passage part 15a in the first passage 29. The flow rate control valve 23 is provided with a valve element 40 operating in resistance to biasing force of a valve spring 46. The valve element 40 is provided with a second valve part adjusting passage section area of the second passage 33 and a first valve part opening and closing the first passage 29 opposing to the second valve part 43. COPYRIGHT: (C)2007,JPO&INPIT
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