Breather device for vehicle fuel tank
A technology of ventilation device and fuel tank, which is applied in the directions of power plant, vehicle components, and arrangement combined with fuel supply of internal combustion engine, etc., to achieve the effect of simple structure
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Embodiment 1
[0053] based on Figure 1 to Figure 4 , the breather device for the fuel tank of the vehicle according to the first embodiment will be described. figure 1 The vehicle 10 equipped with the fuel tank 22 is viewed from the side and schematically shown. The body 11 of the vehicle 10 has a structure in which a floor 14 is laid on constituent members 13 . The constituent member 13 is, for example, a member constituting the skeleton of the vehicle body 11 . The members constituting the framework include, for example, side frames extending in the vehicle body front-rear direction and cross members extending in the vehicle width direction. A fuel tank 22 disposed under the floor 14 is attached to the vehicle body 11 .
[0054] The fuel tank 22 includes a mounting portion 29 for mounting the fuel pump 25 and a supply pipe joint portion 33 . The supply pipe joint portion 33 is connected to the injection port 21 via the fuel supply pipe 23 (charging pipe 23 ). The injection port 21 i...
Embodiment 2
[0086] based on Figure 5 and Figure 6 , the breather device for the fuel tank of the vehicle according to the second embodiment will be described. Figure 5 with the above figure 2 Correspondingly expressed. The fuel tank breather device 20A for a vehicle according to the second embodiment is characterized in that the above-mentioned figure 1 and figure 2 The one-way valve 46 of the shown embodiment 1 is changed to Figure 5 The one-way valve 76 shown, with respect to other structures, due to the above-mentioned figure 1 and figure 2 The shown configurations are the same, so explanations are omitted.
[0087] More specifically, as Figure 5 As shown, the one-way valve 76 is composed of a valve box 81 , a valve core 82 , a return spring 83 and a stop mechanism 84 .
[0088] This valve box 81 is the same as the valve box 61 of embodiment 1 (refer to figure 2 ) for the same structure. That is, the valve box 81 is a cylindrical member formed in a substantially L-s...
Embodiment 3
[0103] based on Figure 7 and Figure 8 , the breather device for the fuel tank of the vehicle according to the third embodiment will be described. Figure 7 with the above figure 1 Correspondingly expressed. The vehicle fuel tank breather device 20B of the third embodiment is characterized in that the above-mentioned figure 1 and figure 2 The ventilation channel 24 of the shown embodiment 1 is changed to Figure 7 and Figure 8 The vent passage 124 shown, with respect to other structures, due to the above-mentioned figure 1 and figure 2 The shown configurations are the same, so explanations are omitted.
[0104] The basic structure of this fuel tank breather 20B is substantially the same as that of the breather passage 24 of the first embodiment. Specifically, when filling liquid fuel from the injection port 21 into the fuel tank 22 through the fuel supply pipe 23 , the fuel tank breather device 20B allows the air in the fuel tank 22 to pass through the vent passag...
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