Impeller of electric fuel pump
A technology for electric fuel pumps and impellers, applied in pumps, pump components, non-variable pumps, etc., can solve problems such as unreasonable blade groove structure, low fuel pump power, and reduced oil pressure, so as to save energy and improve Using power, reducing the effect of swirl
Inactive Publication Date: 2011-06-08
CHONGQING HUAYU ELECTRIC GRP +1
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Problems solved by technology
[0004] This kind of existing vane, because its vane groove structure is unreasonable, can produce the converging phenomenon, make the oil pressure reduce, the flow rate reduces, cause the defect that the power of the fuel pump is low
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[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0016] In specific implementation, such as Figure 1 to Figure 3 As shown, an electric fuel pump impeller includes a disc-shaped impeller body 1 as a whole, an annular blade groove 6 is arranged on the impeller body 1 near the periphery, and the outer ring side and the inner ring side in the blade groove 6 are There are several uniformly distributed blades 2 connected horizontally, and the blades 2 are mutually inclined and arranged symmetrically along the side of the oil inlet direction and the oil outlet direction of the blade groove 6, wherein the blade groove 6 between each adjacent blade 2 The two ends of the outer ring side along the water inlet direction and the water outlet direction are designed to be symmetrical to each other with a radius of 3mm. A curved surface 4 with a radius of 1.5mm. At the same time, chamfers 5 are ...
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The invention discloses an impeller of an electric fuel pump, which comprises an impeller body, the whole impeller body is shaped like a circular plate, an annular blade slot is formed on the impeller body which is near to the periphery, a plurality of blades which are evenly distributed are transversely connected between the side surface of an outer ring and the side surface of an inner ring in the blade slot, and the blades are mutually tilted and mutually symmetrically arranged along the side of the oil inlet direction and the side of the oil outlet direction of the blade slot. The impeller of the electric fuel pump is characterized in that two ends on the side surface of the outer ring and the side surface of the inner ring of the blade slot between each two adjacent blades along the water inlet direction and the water outlet direction are designed to be arc-shaped surfaces which are mutually symmetric. Compared with the prior art, the impeller of the electric fuel pump can reducethe turbulence, increase the scraping amount of oil liquid and greatly improve the oil pressure of outlet oil under the situation of keeping the same rotational speed of the impeller, thereby improving the using power of the fuel pump and saving the energy.
Description
technical field [0001] The invention relates to a vane type automobile electric fuel pump, in particular to an automobile electric fuel pump impeller. Background technique [0002] The fuel pump is an important part of the automobile fuel supply system and a key component of the automobile engine. In an electronically controlled fuel injection engine, the fuel delivered to the injector must be pressurized before the engine runs, so an electric fuel pump is required, which can be installed inside or outside the tank. When in use, gasoline enters from one end of the fuel pump and the other end After being pressurized, it flows out to provide injection pressure for the fuel injection system. Electric fuel pumps are divided into roller type, vane type and gear type. [0003] An existing vane type electric fuel pump mainly includes a pump body, a stator, a rotor, an impeller and a rotating shaft. Wherein, the existing structure of the impeller is as follows: it includes a disc...
Claims
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IPC IPC(8): F04D29/24F02M37/08
Inventor 刘忠何玉祥吴承贤曹进
Owner CHONGQING HUAYU ELECTRIC GRP