EVAPORATED FUEL TREATMENT DEVICE

To provide a technique capable of accurately specifying a valve opening start position of a sealing valve.SOLUTION: An evaporated fuel treatment device includes: a fuel tank; a vapor passage through which evaporated fuel generated from fuel in the fuel tank passes; a sealing valve opening/closing th...

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Bibliographische Detailangaben
1. Verfasser:	MIYABE YOSHIKAZU
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BLASTING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF WEAPONS
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Beschreibung
Zusammenfassung:	To provide a technique capable of accurately specifying a valve opening start position of a sealing valve.SOLUTION: An evaporated fuel treatment device includes: a fuel tank; a vapor passage through which evaporated fuel generated from fuel in the fuel tank passes; a sealing valve opening/closing the vapor passage; a concentration sensor detecting a concentration of the evaporated fuel in the vapor passage on the downstream side of the sealing valve; and a control section. When the sealing valve is operated from a valve closing state to a valve opening side, the control section specifies a valve opening start position where the sealing valve is changed from the valve closing state to a valve opening state on the basis of the concentration detected by the concentration sensor.SELECTED DRAWING: Figure 1 【課題】封鎖弁の開弁開始位置を精度良く特定することができる技術を提供する。【解決手段】蒸発燃料処理装置は、燃料タンクと、前記燃料タンク内の燃料から発生する蒸発燃料が通過するベーパ通路と、前記ベーパ通路を開閉する封鎖弁と、前記封鎖弁よりも下流側の前記ベーパ通路内の蒸発燃料の濃度を検出する濃度センサと、制御部と、を備えている。前記制御部は、前記封鎖弁が前記閉弁状態から開弁側に動作する場合に、前記濃度センサの検出濃度に基づいて、前記封鎖弁が前記閉弁状態から前記開弁状態に変化する開弁開始位置を特定する。【選択図】図１