| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel supply device in which evaporation fuel whose HC concentration is stable is supplied to a combustion chamber. <P>SOLUTION: In a fuel supply device 1 supplying evaporation fuel to an internal combustion engine 10, an evaporation fuel pipe 410 forming an evaporation fuel passage 41 from a fuel tank 39 is separated and provided from a purge pipe 530 forming a purge passage 53 from a canister51, and it is connected to a control valve 60 which can switch alternatively three modes. In a "supply mode" of the control valve 60, an evaporation fuel passage 41 and an absorption passage 29 are communicated, and evaporation fuel from the fuel tank 39 is supplied to a combustion chamber 19 through the absorption passage 29. In a "purge mode", a purge passage 53 and the absorption passage 29 are communicated. In "stop mode", the evaporation fuel passage 41 and the purge passage 53 are intercepted. Since the evaporation fuel passage 41 and the purge passage 53 are separated clearly, evaporation fuel whose HC concentration from the fuel tank 39 is stable can be supplied to the fuel chamber 19. <P>COPYRIGHT: (C)2012,JPO&INPIT |
