CN213392467U - PWM signal control brushless fuel pump assembly - Google Patents
PWM signal control brushless fuel pump assembly Download PDFInfo
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- CN213392467U CN213392467U CN202022082937.1U CN202022082937U CN213392467U CN 213392467 U CN213392467 U CN 213392467U CN 202022082937 U CN202022082937 U CN 202022082937U CN 213392467 U CN213392467 U CN 213392467U
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Abstract
The utility model relates to an adopt brushless motor's brushless fuel pump of PWM signal control. This kind of brushless fuel pump assembly of PWM signal control, including oil storage bucket, level sensor subassembly and main oil pump, the main oil pump is including cylindric casing and the pumping impeller and the motor that are arranged in the cylindric casing, its characterized in that: the motor adopts a brushless motor, and the brushless motor is connected with an external PWM signal control system. The PWM signal control brushless fuel pump is not limited to the abrasion loss of the carbon brush and the commutator because the brushless motor structure has no brush and commutator any more, and the design can greatly prolong the theoretical life of the fuel pump.
Description
Technical Field
The utility model relates to a pump, concretely relates to use fuel pump assembly on car.
Background
Fuel pump assemblies are a major component of automotive fuel injection systems and function to draw fuel from a fuel tank and deliver it to a fuel supply line. The existing fuel pump assembly comprises an oil storage barrel, a liquid level sensor assembly and a main oil pump, wherein a motor of the existing fuel pump main oil pump is limited by an electric brush and a mechanical reversing technology of a commutator, and the service life of the oil pump is greatly influenced by different use working conditions and use media.
Disclosure of Invention
In view of the deficiencies in the prior art, the utility model discloses the innovation provides an adopt brushless motor's brushless fuel pump of PWM signal control.
This kind of brushless fuel pump assembly of PWM signal control, including oil storage bucket, level sensor subassembly and main oil pump, the main oil pump is including cylindric casing and the pumping impeller and the motor that are arranged in the cylindric casing, its characterized in that: the motor adopts brushless motor, brushless motor is connected with external PWM signal control system.
Still be equipped with vice oil pump in the oil storage bucket, be connected with first oil pipe on the vice oil pump, first oil pipe is connected with the three-way pipe, the three-way pipe is located the oil storage bucket, the three-way pipe has a logical interface, two-way interface and tee bend interface, a logical interface and the first oil pipe of three-way pipe meet, the two-way interface and the drainage tube of three-way pipe meet, tee bend interface and a logical interface are located a straight line, the position that a logical interface inside is close to two-way interface has the injection aperture.
The three-way pipe is characterized in that a three-way connector of the three-way pipe is arranged upwards, a flow blocking cap is connected onto the three-way connector, a flow blocking surface is arranged at the top of the flow blocking cap, and a through hole is formed in the side surface of the flow blocking cap.
The oil storage barrel is characterized in that a second oil outlet pipe is connected to the auxiliary oil pump and is connected with an injection nozzle, an injection channel is arranged at the bottom of the oil storage barrel, an injection port of the injection nozzle faces one end of the injection channel, and the other end of the injection channel is communicated with the inside of the oil storage barrel.
According to the utility model provides a pair of brushless fuel pump of PWM signal control, because brushless motor structure no longer has brush and commutator, no longer confine the wearing and tearing volume of carbon brush and commutator to, this design can promote the theoretical life of oil pump by the big degree.
Drawings
Fig. 1 is a schematic structural diagram 1 of the present invention;
fig. 2 is a schematic structural diagram 2 of the present invention (with the oil storage barrel hidden);
FIG. 3 is a cross-sectional view of a tee;
fig. 4 is a sectional view of the bottom of the swirl pot.
Detailed Description
As shown in fig. 1 and 2, the PWM signal controlled brushless fuel pump includes an oil storage tank 1, a liquid level sensor assembly, and a main fuel pump 2, where the main fuel pump 2 includes a cylindrical housing, a pumping impeller and a motor, and the motor is a brushless motor, and the brushless motor is connected to an external PWM signal control system. Because the brushless motor structure has no electric brush and commutator, and is not limited to the abrasion loss of the carbon brush and the commutator, the design can greatly prolong the theoretical life of the oil pump; in addition, the friction loss of the brush and the commutator of the conventional motor is eliminated, so that the brushless motor has higher motor efficiency than the conventional motor. The fuel pump is provided with a contact pin connected with a three-phase motor and used for connecting an external PWM signal control system, and a vehicle end system controls the rotating speed of the brushless motor through a PWM signal input by an adjusting system according to the running working condition of a vehicle, so that the fuel demand and the fuel supply of the gasoline engine are relatively balanced, and the fuel supply according to the requirement is realized.
Some vehicles are provided with two fuel tanks, two fuel pumps are generally arranged in the two fuel tanks, however, in order to reduce the cost, only one fuel pump is arranged in a main fuel tank, and then fuel in a secondary fuel tank is guided to an inner port of the main fuel tank through a guide structure, so that the cost can be greatly reduced. However, the existing fuel pump needs to supply fuel to the engine and pump the fuel to complete the remote oil absorption, so that the fuel pump consumes a large flow, and the assembly cannot meet the vehicle end requirement.
In order to solve the deficiency that prior art exists, the utility model discloses still be equipped with vice oil pump 3 in oil storage bucket 1, be connected with first oil pipe 5 on this vice oil pump 3, first oil pipe 5 is connected with three-way pipe 4, this three-way pipe 4 is located oil storage bucket 1, as shown in fig. 3, three-way pipe 4 has one leads to interface 41, two way interface 42 and tee bend interface 43, wherein one leads to interface 41 and the first oil pipe 5 of three-way pipe 4 meets, two way interface 42 and the drainage tube 9 of three-way pipe 4 meet, tee bend interface 43 and one lead to interface 41 and be located a straight line, the inside position that is close to two way interface 42 of one way interface 41 has injection aperture 44.
When the auxiliary oil pump 3 pumps the fuel oil in the main oil tank into the three-way pipe 4 through the first oil outlet pipe 5, the three-way connector 43 and the one-way connector 41 are positioned on the same straight line, and the position of the inside of the one-way connector 41, which is close to the two-way connector 42, is provided with the small injection hole 44, when the fuel oil is injected to the three-way connector 43 from the small injection hole 44 of the one-way connector 41, high-speed jet flow is generated (the fuel oil still enters the main oil tank because the three-way connector 4 is positioned in the oil storage barrel 1), the two-way connector 42 of the three-way pipe 4 generates negative pressure, thereby achieving a drainage effect, because the two-way connector 42 of the three-way pipe 4 is connected with the drainage pipe 9, and the other end of the drainage pipe 9 is positioned in the auxiliary oil tank, so that the fuel oil in the auxiliary oil tank is drained, and enters the main oil tank, and finally, the fuel oil in the main oil tank is supplied to the engine by the main oil pump 2.
Because the three-way pipe 4 and other pipelines have air, when the fuel pump works, the high-speed jet flow generated by the auxiliary oil pump 3 can form air bubbles in the oil storage barrel 1, and the air bubbles can be adsorbed by the fuel pump to cause abnormal work of the fuel pump. In order to solve the problem, as shown in fig. 3, the utility model discloses set up tee bend interface 43 of tee bend pipe 4 up to be connected with on tee bend interface 43 and keep off the cap 8 that flows, should keep off the top of cap 8 and have and keep off the surface 81 that flows, and keep off the side of cap 8 and have through-hole 80. Because the tee bend interface 43 of three-way pipe 4 is up, the bubble that high-speed efflux produced can not reach the oil storage bucket 1 bottom, directly through discharging to the upper position of oil storage bucket 1 liquid level, because of the air is lighter than liquid, so the bubble can not adsorbed by the fuel pump again, effectively solve the problem of fuel pump adsorbed air, and the fender stream face 81 of fender stream cap 8 can restrict high-speed efflux from the top blowout, but the through-hole discharge of edgewise, high-speed efflux just can be slowed down like this to gently flow from the side.
Finally, it is worth mentioning that in order to guide the fuel oil at the bottom in the main oil tank into the oil storage barrel 1, as shown in fig. 2, the secondary oil pump 3 is connected with a second oil outlet pipe 6, as shown in fig. 4, the second oil outlet pipe 6 is connected with an injection nozzle 7, the bottom of the oil storage barrel 1 is provided with an injection channel 10, an injection port of the injection nozzle 7 faces one end of the injection channel 10, and the other end of the injection channel 10 is communicated with the inside of the oil storage barrel 1. When the auxiliary oil pump works, the auxiliary oil pump 3 discharges oil through the second oil outlet pipe 6, fuel oil sprayed at high speed by the spray nozzle 7 generates an air suction effect, and negative pressure is generated in a gap between the spray nozzle 7 and the injection channel 10, so that the nearby fuel oil is guided into the injection channel 10 and finally enters the oil storage barrel 1.
Claims (4)
- PWM signal control brushless fuel pump assembly, including oil storage bucket, level sensor subassembly and main oil pump, the main oil pump is including cylindric casing and the pumping impeller and the motor that are arranged in the cylindric casing, its characterized in that: the motor adopts brushless motor, brushless motor is connected with external PWM signal control system.
- 2. The PWM signal controlled brushless fuel pump assembly of claim 1, wherein: the oil storage barrel is characterized in that an auxiliary oil pump is further arranged in the oil storage barrel, a first oil outlet pipe is connected to the auxiliary oil pump, the first oil outlet pipe is connected with a three-way pipe, the three-way pipe is located in the oil storage barrel, the three-way pipe is provided with a through connector, a two-way connector and a three-way connector, the one-way connector of the three-way pipe is connected with the first oil outlet pipe, the two-way connector of the three-way pipe is connected with a drainage pipe, the three-way connector and the one-way connector are located on the same straight line, and a small injection hole is formed in the position, close to.
- 3. The PWM signal controlled brushless fuel pump assembly of claim 2, wherein: the three-way pipe is characterized in that a three-way connector of the three-way pipe is arranged upwards, a flow blocking cap is connected onto the three-way connector, a flow blocking surface is arranged at the top of the flow blocking cap, and a through hole is formed in the side surface of the flow blocking cap.
- 4. The PWM signal controlled brushless fuel pump assembly of claim 2, wherein: the oil storage barrel is characterized in that a second oil outlet pipe is connected to the auxiliary oil pump and is connected with an injection nozzle, an injection channel is arranged at the bottom of the oil storage barrel, an injection port of the injection nozzle faces one end of the injection channel, and the other end of the injection channel is communicated with the inside of the oil storage barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022082937.1U CN213392467U (en) | 2020-09-22 | 2020-09-22 | PWM signal control brushless fuel pump assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022082937.1U CN213392467U (en) | 2020-09-22 | 2020-09-22 | PWM signal control brushless fuel pump assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213392467U true CN213392467U (en) | 2021-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022082937.1U Active CN213392467U (en) | 2020-09-22 | 2020-09-22 | PWM signal control brushless fuel pump assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213392467U (en) |
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2020
- 2020-09-22 CN CN202022082937.1U patent/CN213392467U/en active Active
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