Fuel oil liquid level valve of separating type floater structure and working mode of fuel oil liquid level valve
A liquid level valve, separate technology, applied in the direction of the substructure, etc., to achieve the effect of saving design and molds, improving safety, and meeting diverse needs
Pending Publication Date: 2022-07-22
STANT AUTOMOTIVE SYST SUZHOU
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Problems solved by technology
The float structure is designed as a separate lower float and upper float, and the two are connected by the first-stage opening gasket, the first buckle, and the second buckle, so that in the process of use, the first-level small flow automatic Gradual pressure relief, and two-stage large flow rapid pressure relief, thus solving the problem that the original fuel level valve cannot quickly relieve pressure under high pressure, improving the safety of the fuel tank and vehicle system
Method used
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Embodiment 1
[0037] like figure 1 Shown is a cross-sectional view of the present invention, including a housing 1, a float housing 2, a float structure assembly 3, a bottom cover 4, a spring 5, an O-ring 6, the float housing 2 is arranged in the housing 1, and the float structure is generally 3 are arranged in the float housing 2, the bottom cover 4 is arranged under the housing 1, the spring 5 is arranged between the float structure assembly 3 and the bottom cover 4, and the O-ring 6 is arranged above the float housing 2 ; wherein, the float structure assembly 3 includes a lower float 31, a first-level opening gasket 32, a first buckle 33, a second buckle 34, an upper float 35, and a second-level opening gasket 36. The first-level opening gasket 36 The gasket 32 is connected to the upper end of the lower float 31 and the lower end of the upper float 35 through the first buckle 33 and the second buckle 34 respectively.
[0038] like figure 2 and as image 3 Shown are a three-dimensi...
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The invention discloses a fuel oil liquid level valve of a separated floater structure and a working mode of the fuel oil liquid level valve. The fuel oil liquid level valve comprises a shell, a floater shell, a floater structure assembly, a bottom cover, a spring and an O-shaped ring. The floater structure assembly comprises a lower floater, a first-stage opening sealing gasket, a first buckle, a second buckle, an upper floater and a second-stage opening sealing gasket. In the refueling process of the hybrid electric vehicle, along with rising of oil in the oil tank, the oil flows into the shell, the floater structure assembly rapidly rises under the action of buoyancy until the first-stage opening vent hole and the second-stage opening vent hole are in a closed state, and refueling is completed; in the driving process of the hybrid electric vehicle, oil in the oil tank is gradually reduced, the lower floater slowly falls down due to the gravity effect, the first-stage opening sealing gasket is gradually separated from the first-stage opening vent hole, and first-stage small-flow automatic step-by-step pressure relief is achieved; when the oil liquid descends to a certain position, the second-stage opening sealing gasket on the upper floater is separated from the sealing state, and therefore second-stage large-flow rapid pressure relief is achieved, and oil can be conveniently added into the oil tank again.
Description
technical field [0001] The invention relates to the field of automobile fuel management systems, in particular to a fuel level valve with a separated float structure and a working method thereof. Background technique [0002] Compared with traditional fuel vehicles, the biggest difference between hybrid vehicles and traditional fuel vehicles is the fuel tank system. In traditional fuel vehicles, the fuel vapor generated in the fuel tank will be continuously discharged into the carbon canister. In order to meet the requirements of the current National VI regulations, the carbon canister needs to have sufficient capacity to absorb fuel vapor, so it is not only large in size, but also The requirements for service life are also high. When a hybrid vehicle is powered by electricity, the fuel tank isolation valve will isolate the fuel vapor in the fuel tank from passing into the carbon canister, thereby achieving "zero emission" of fuel vapor and effectively reducing environmenta...
Claims
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IPC IPC(8): B60K15/03
CPCB60K15/03B60K2015/03289
Inventor 刘牮孙红明周彪胡安东
Owner STANT AUTOMOTIVE SYST SUZHOU