Low-pressure external pump assembly
An assembly and low-pressure technology, applied in the field of low-pressure external pump assembly, can solve problems such as low pressure and cannot form injection pressure, and achieve the effect of improving utilization
Pending Publication Date: 2019-05-31
众恒汽车部件有限公司
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Because the low-pressure external pump is partially placed outside the fuel tank, and the pressure is low, the injection pressure cannot be formed. When the fuel in the fuel tank is insufficient, it is difficult to continue to supply fuel to the injector.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0020] Specific embodiments of the present invention will be described in further detail below based on the accompanying drawings. It should be understood that the description of the embodiments of the present invention here is not intended to limit the protection scope of the present invention.
[0021] Please refer to Figure 1 to Figure 7 The low-pressure external pump assembly provided by the present invention includes an oil pump main body 10 whose first end is located in the oil tank, a first filter screen 20 sleeved outside the first end of the oil pump main body 10, and is rotatably connected with the oil pump main body 10 and located in the oil tank buoy 30.
[0022] The oil pump main body 10 includes a casing 11 , a pump body 13 inside the casing 11 , a check valve 15 , a float 16 , a counterweight 17 and an oil storage cylinder 19 .
[0023] Several filter holes 21 are opened on the first filter screen 20 .
[0024] The casing 11 located at the first end of the o...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A low-pressure external pump assembly comprises an oil pump body and a first filter screen. The oil pump body comprises a shell body, a pump body, a check valve, a floater, a balance weight block andan oil storage barrel. An opening is formed in the shell. A partition plate is arranged in the opening. An oil inlet is formed in the middle portion of the partition plate. The floater is movably located on the side, facing the opening, of the partition plate. The side, facing the partition plate, of the floater s connected with the balance weight block. A communicating column is arranged on the middle portion of the balance weight block in the manner that the communicating column protrudes towards the partition plate. A through hole is formed in the middle of the communicating column. A bossis arranged in the through hole. The check valve comprises an umbrella-shaped plate, a middle column and a protruding ring. The middle column is located in the through hole of the communicating column. The boss is located between the umbrella-shaped plate and the protruding ring. An oil return opening is formed between the top of the pump body and the oil storage barrel. A connection opening communicating with an oil pass passageway is formed in the bottom of the oil storage barrel. In this way, when fuel oil in an oil tank is insufficient, oil can continue to be supplied to an oil atomizer for a period of time through gasoline recycled by the oil storage barrel, and the utilization rate of the gasoline is increased.
Description
technical field [0001] The invention relates to the field of vehicle oil pumps, in particular to a low-pressure external pump assembly. Background technique [0002] The vehicle fuel pump is a device used to pump the gasoline in the fuel tank to the fuel injector. Because the low-pressure external pump is partially placed outside the fuel tank, and the pressure is low, the injection pressure cannot be formed. When the fuel in the fuel tank is insufficient, it is difficult to continue to supply fuel to the injector. Contents of the invention [0003] In view of this, the present invention provides a low-pressure external pump assembly capable of supplying fuel to the fuel injector for a period of time when the fuel in the fuel tank is insufficient, so as to improve the utilization rate of gasoline, so as to solve the above-mentioned problems. [0004] A low-pressure external pump assembly, comprising an oil pump main body whose first end is located in an oil tank and a fir...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): F02M37/04F02M37/44F04B23/02F04B49/22
Inventor 伍鹏飞
Owner 众恒汽车部件有限公司