Honda Motor Co., Ltd.

Hiroshi Kawanishi

Junji Saiga

Naoaki Ishii

Provided is an evaporated fuel treatment device including a mounting partprovided in an intake pipe, and a purge pumpincluding a discharge part, a first introduction tube, and a second introduction tube. A pump bodyof the purge pumpincludes a pump tubeformed with a pump flow paththat extends along an axis O and that guides, to the discharge part, fluid to be introduced from the introduction tube. A reduced partwith a diameter decreasing toward downstream is formed in the flow pathon a side downstream of the introduction tube, and a connection flow paththat connects the introduction tubeand the flow pathis formed, and in a state where the pump bodyis removed from the mounting part, the flow pathcommunicates with outside.

Evaporated fuel treatment device and fluid treatment device

A pump flow passagewhich extends in a flow direction Fand through which fluids introduced through first and second inlet pipeflow is disposed inside a main bodyof a purge pumpof an evaporative fuel processing device, a venturiwhich decreases in diameter toward downstream is formed in the pump flow passageat a position downstream of the first inlet pipein the flow direction F, the main bodyhas an upstream-side memberin which the first inlet pipeis disposed, and a downstream-side memberin which a discharge pipeis disposed, and connection facesof the upstream-side memberand the downstream-side memberare disposed upstream of the smallest diameter part, at which the inner diameter of the venturiis the smallest, in the flow direction F

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Saitama, Japan

Hiroshi Kawanishi