PROBLEM TO BE SOLVED: To improve a gas-liquid separation function of a fuel and prevent the liquid fuel from flowing into a canister.SOLUTION: A fuel cutoff valve comprises: a valve mechanism 66 cutting off communication between the inside of a fuel tank and a canister; an upper space part 46 arranged above the valve mechanism 66; a pipe body 32 having a pipe passage 48 communicating with the upper space part 46 and introducing a fuel gas to the canister; a retaining chamber 64 formed of first and second liquid shielding parts 52, 62 damming a liquid fuel accumulated in the upper space part 46; a liquid sump part 76 arranged between the pipe body 32 and the first liquid shutoff part 52 and accumulating the liquid fuel flowing out from the retaining chamber 64; and a communication part 78 providing communication between the retaining chamber 64 and the liquid sump part 76. The communication part 78 is arranged at a position where it does not overlap with the pipe body 32 as viewed from the axial direction of the pipe body 32.SELECTED DRAWING: Figure 5
【課題】燃料の気液分離機能を向上させて、液体燃料のキャニスタへの流入を抑制すること。【解決手段】燃料タンク内とキャニスタとの連通を遮断する弁機構66と、弁機構66の上部に配置された上部空間部46と、上部空間部46に連通する管路48を有し燃料ガスをキャニスタへ導入する管体32と、上部空間部46に溜まっている液体燃料を堰き止める第1及び第2液遮蔽部52、62によって形成された滞留室64と、管体32と第1液遮蔽部52との間に配置され滞留室64から流出した液体燃料を溜める液溜まり部76と、滞留室64と液溜まり部76とを連通させる連通部78とを備え、連通部78は、管体32の軸方向からみて、管体32と非重畳位置に配置されている。【選択図】図5
FUEL CUTOFF VALVE
燃料遮断弁
2017-12-14
Patent
Elektronische Ressource
Japanisch
IPC: | F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |