CN112406524A - Internal and external exhaust system of plastic fuel tank and connecting method - Google Patents
Internal and external exhaust system of plastic fuel tank and connecting method Download PDFInfo
- Publication number
- CN112406524A CN112406524A CN202011269952.5A CN202011269952A CN112406524A CN 112406524 A CN112406524 A CN 112406524A CN 202011269952 A CN202011269952 A CN 202011269952A CN 112406524 A CN112406524 A CN 112406524A
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- CN
- China
- Prior art keywords
- fuel tank
- internal
- exhaust
- positioning pin
- pipe
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
- B60K2015/03523—Arrangements of the venting tube
- B60K2015/03528—Mounting of venting tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
- B60K2015/03542—Mounting of the venting means
Abstract
The invention relates to an internal and external exhaust system of a plastic fuel tank and a connecting method, comprising the fuel tank, an internal exhaust pipe, a positioning pin and an exhaust joint; the fuel tank is at least provided with a fuel pump hole and a fuel tank exhaust hole, the internal exhaust pipe is arranged in the fuel tank, the outer end of the internal exhaust pipe is inserted into the fuel tank exhaust hole, the positioning pin is inserted into the outer end of the internal exhaust pipe from the outer side of the fuel tank and is fixedly connected with the wall of the fuel tank, the exhaust joint is sleeved on the positioning pin from the outer side of the fuel tank and is fixedly connected with the wall of the fuel tank, and the internal exhaust pipe, the positioning pin and the exhaust joint. This technical scheme is through the connected mode between locating pin, inside blast pipe and the exhaust joint, compares with the technical scheme that uses two quick connector to connect at present in using technical scheme, not only connects the cooperation well, simple structure moreover to practice thrift the cost.
Description
Technical Field
The invention belongs to the technical field of plastic fuel tanks, and particularly relates to an internal and external exhaust system of a plastic fuel tank and a connecting method.
Background
In order to meet the current national six emission regulations, the north american leiviii emission regulations, and the consequent national seven regulations, the individual host plants have greatly increased fuel tank assembly emission requirements. The original external welding accessories are internally arranged to be a feasible scheme, the traditional blow molding assembly scheme is arranged in the existing accessories, and the novel two-piece blow molding scheme is a technology which is verified by the whole vehicle and has supplied goods in batches. At present, the internal exhaust system is mainly connected with the outside through an oil pump flange and a quick plug.
After the key fittings are arranged, how to connect the internal and external exhaust systems of the plastic fuel tank is important to find a connection scheme with higher innovation, realizability and economy by combining the higher and higher requirements of each main engine plant on cost management at present.
Disclosure of Invention
The invention aims to provide an internal and external exhaust system of a plastic fuel tank and a connecting method, which have great economic advantages compared with two quick connectors used in the prior scheme; meanwhile, the operation is simple, and the labor cost is reduced.
The invention is realized by the following technical scheme:
an internal and external exhaust system of a plastic fuel tank comprises the fuel tank, an internal exhaust pipe, a positioning pin and an exhaust joint;
at least, be provided with oil pump hole and oil tank exhaust hole on the fuel tank, inside blast pipe set up in the fuel tank, the outer end of inside blast pipe is inserted in the oil tank exhaust hole, the locating pin inserts from the outside of fuel tank the outer end of inside blast pipe and with fuel tank wall fixed connection, the exhaust joint from the outside of fuel tank overlap in on the locating pin and with behind the fuel tank wall fixed connection, inside blast pipe the locating pin reaches the exhaust joint forms the exhaust route.
Preferably, the lateral wall that inside blast pipe is close to the outer end is provided with two annular archs, and wherein the annular arch that is close to the outer end of inside blast pipe is first annular arch, and another is second annular arch, first annular arch with distance between the second annular arch with the wall thickness of fuel tank cooperatees.
Preferably, a connecting part is arranged between the outer side surface of the first annular bulge and the side wall of the internal exhaust pipe;
the inner side surface of the first annular bulge, the inner side surface of the second annular bulge and the outer side surface of the second annular bulge are perpendicular to the side wall of the internal exhaust pipe.
Preferably, the positioning pin and the internal exhaust pipe are in interference fit.
Preferably, the inner end part of the positioning pin is provided with a chamfer and a die-shifting angle.
Preferably, the die drawing angle is 1-2 degrees.
Preferably, the exhaust joint comprises a first tubular part and a second tubular part which are connected into a whole structure, wherein the outer diameter and the inner diameter of the first tubular part are both larger than those of the second tubular part;
the first tubular part is sleeved on the locating pin and fixedly connected with the wall of the fuel tank.
Preferably, a gap is arranged between the end face of the first tubular part connected with the second tubular part and the outer end face of the positioning pin.
A method of connecting an internal and external vent system of a plastic fuel tank using any of the above, comprising the steps of:
s1, after the oil pump hole and the oil tank vent hole are opened in the process of punching and welding the fuel tank, an operator extends the outer end of the internal exhaust pipe from the oil tank vent hole to the outer side of the fuel tank through the oil pump hole and enables the internal exhaust pipe to be clamped and matched with the wall of the fuel tank;
s2, inserting a positioning pin onto the internal exhaust pipe from the outer end of the internal exhaust pipe, wherein the inner end of the positioning pin extends into the fuel tank for a first set distance;
and S3, welding the exhaust joint on the outer side wall of the fuel tank, sealing the positioning pin so that the exhaust joint is communicated with the internal exhaust pipe, and keeping the distance between the outer end surface of the positioning pin and the inner bottom surface of the exhaust joint to be a second set distance.
Preferably, the first set distance is 5 mm; the second set distance is greater than 1 mm.
The invention has the beneficial effects that:
this technical scheme is through the connected mode between locating pin, inside blast pipe and the exhaust joint, compares with the technical scheme that uses two quick connector to connect at present in using technical scheme, not only connects the cooperation well, simple structure moreover to practice thrift the cost.
Drawings
FIG. 1 is an exploded view of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of an internal exhaust structure according to the present invention;
FIG. 4 is a schematic view of the locating pin of the present invention.
Description of the reference numerals
1. The fuel tank comprises a fuel tank body, 2, an internal exhaust pipe, 3, a positioning pin, 4, an exhaust joint, 11, a fuel pump hole, 12, a fuel tank exhaust hole, 21, a first annular bulge, 22, a second annular bulge, 23, a connecting part, 31, a chamfer, 41, a first tubular part, 42, a second tubular part, 43 and an end face, connected with the first tubular part and the second tubular part, of the fuel tank body.
Detailed Description
The technical solutions of the present invention are described in detail below by specific examples, and the following examples are only exemplary and can be used only for explaining and explaining the technical solutions of the present invention, but not construed as limiting the technical solutions of the present invention.
As shown in fig. 1 and 2, the present application provides an internal and external exhaust system for a plastic fuel tank, which includes a fuel tank 1, an internal exhaust pipe 2, a positioning pin 3 and an exhaust joint 4. The fuel tank is a fuel tank in the prior art, and the material and the preparation method of the fuel tank are both in the prior art, and detailed description is not provided herein.
At least, be provided with oil pump hole 11 and oil tank exhaust hole 12 on the fuel tank, inside blast pipe set up in the fuel tank, the outer end of inside blast pipe is inserted in the oil tank exhaust hole, the locating pin inserts from the outside of fuel tank the outer end of inside blast pipe and with fuel tank wall fixed connection, the exhaust joint from the outside of fuel tank overlap in on the locating pin and with behind the fuel tank wall fixed connection, inside blast pipe the locating pin reaches the exhaust joint forms the exhaust route. A gap is formed between the outer end face of the positioning pin and the end face close to the exhaust joint, and therefore false welding caused by poor welding quality of the exhaust joint due to interference of parts is prevented.
Specifically, as shown in fig. 3, the side wall of the internal exhaust pipe near the outer end is provided with two annular protrusions, wherein the annular protrusion near the outer end of the internal exhaust pipe is a first annular protrusion 21, and the other annular protrusion is a second annular protrusion 22. The first annular bulge and the second annular bulge are arranged in parallel at intervals, and the distance between the first annular bulge and the second annular bulge is matched with the wall thickness of the fuel tank, namely the wall thickness of the exhaust hole of the fuel tank, so that the axial movement is avoided after the internal exhaust pipe is clamped with the wall of the fuel tank.
Wherein a connecting part 23 is arranged between the outer side surface of the first annular bulge and the side wall of the internal exhaust pipe; in other embodiments of this application, connecting portion also can be the arcwall face structure of indent, and the setting of connecting portion is convenient for inside blast pipe and is stretched out from oil tank blast hole department.
The inner side surface of the first annular bulge, the inner side surface of the second annular bulge and the outer side surface of the second annular bulge are perpendicular to the side wall of the internal exhaust pipe. When the first annular projection is extended to the outer side of the fuel tank and combined with the installation of the positioning pin, the first annular projection cannot return to the inside of the fuel tank.
As shown in fig. 4, the positioning pin 3 is T-shaped as a whole, the diameter of the outer end portion is larger than that of the inner end portion, and the inner end portion is provided with a chamfer 31 and a die-pulling angle a of 1-2 ° to ensure the assembly of the positioning pin. The locating pin and the internal exhaust pipe are in interference fit, the interference is usually 0.5mm, and no gap is guaranteed between the internal exhaust pipe and the fuel tank shell. After the positioning pin is inserted into the internal exhaust pipe, the distance that the positioning pin extends into the fuel tank is usually not less than 5mm, and the deformation of a pipeline caused by the shrinkage of the fuel tank is prevented.
The exhaust joint 4 comprises a first tubular part 41 and a second tubular part 42 which are connected into a whole structure, wherein the outer diameter and the inner diameter of the first tubular part are both larger than those of the second tubular part; the first tubular part is sleeved on the locating pin and fixedly connected with the wall of the fuel tank, and a gap of 1mm is arranged between the end surface 43 of the first tubular part connected with the second tubular part and the outer end surface of the locating pin.
The application provides a method for connecting an internal and external exhaust system of a plastic fuel tank, which comprises the following steps:
s1, before the connecting method is carried out, an oil pump hole and an oil tank vent hole are machined in the fuel tank shell through a punching and welding process. An operator puts the internal exhaust pipe into the fuel tank shell through the oil pump hole, stretches the outer end of the internal exhaust pipe out of the fuel tank exhaust hole to the outer side of the fuel tank, and enables the internal exhaust pipe to be clamped and matched with the wall of the fuel tank.
S2, follow the locating pin the outer end of inside blast pipe is inserted on the inside blast pipe to the inner end of locating pin stretches into the inside first distance of setting L of fuel tank, and in the technical scheme of this application, first distance of setting is 5mm usually, prevents that the oil tank shrink from resulting in the pipeline to warp.
And S3, welding the exhaust joint on the outer side wall of the fuel tank, sealing the positioning pin to enable the exhaust joint to be communicated with the internal exhaust pipe, and keeping the distance between the outer end face of the positioning pin and the inner bottom face of the exhaust joint to be a second set distance, wherein in the embodiment, the second set distance H is 1mm, so that the condition that false welding and the like are caused due to poor welding quality of the exhaust joint caused by interference of parts is prevented.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. An internal and external exhaust system of a plastic fuel tank is characterized by comprising the fuel tank, an internal exhaust pipe, a positioning pin and an exhaust joint;
at least, be provided with oil pump hole and oil tank exhaust hole on the fuel tank, inside blast pipe set up in the fuel tank, the outer end of inside blast pipe is inserted in the oil tank exhaust hole, the locating pin inserts from the outside of fuel tank the outer end of inside blast pipe and with fuel tank wall fixed connection, the exhaust joint from the outside of fuel tank overlap in on the locating pin and with behind the fuel tank wall fixed connection, inside blast pipe the locating pin reaches the exhaust joint forms the exhaust route.
2. The internal and external vent system for plastic fuel tank as claimed in claim 1, wherein the side wall of the internal vent pipe near the outer end is provided with two annular protrusions, wherein the annular protrusion near the outer end of the internal vent pipe is a first annular protrusion, the other annular protrusion is a second annular protrusion, and the distance between the first annular protrusion and the second annular protrusion matches with the wall thickness of the fuel tank.
3. The internal and external vent system for a plastic fuel tank as claimed in claim 2, wherein a connecting portion is provided between an outer side surface of the first annular projection and a side wall of the internal vent pipe;
the inner side surface of the first annular bulge, the inner side surface of the second annular bulge and the outer side surface of the second annular bulge are perpendicular to the side wall of the internal exhaust pipe.
4. The internal and external vent system for a plastic fuel tank as claimed in claim 1, wherein the locating pin is in interference fit with the internal vent tube.
5. The internal and external vent system for a plastic fuel tank as claimed in claim 1, wherein the inner end of the positioning pin is chamfered and provided with a die-stripping angle.
6. A plastic fuel tank internal and external venting system as defined in claim 5 wherein said die angle is 1-2 °.
7. A plastic fuel tank inside-outside vent system according to claim 1, wherein said vent fitting comprises a first tubular portion and a second tubular portion connected as a unitary structure, said first tubular portion having an outer diameter and an inner diameter each larger than an outer diameter and an inner diameter of said second tubular portion;
the first tubular part is sleeved on the locating pin and fixedly connected with the wall of the fuel tank.
8. A plastic fuel tank internal and external vent system as claimed in claim 7, wherein a gap is provided between the end face of the first tubular part connected to the second tubular part and the outer end face of the positioning pin.
9. A method of connecting an internal and external vent system for a plastic fuel tank as claimed in any one of claims 1 to 8, comprising the steps of:
s1, after the oil pump hole and the oil tank vent hole are opened in the process of punching and welding the fuel tank, an operator extends the outer end of the internal exhaust pipe from the oil tank vent hole to the outer side of the fuel tank through the oil pump hole and enables the internal exhaust pipe to be clamped and matched with the wall of the fuel tank;
s2, inserting a positioning pin onto the internal exhaust pipe from the outer end of the internal exhaust pipe, wherein the inner end of the positioning pin extends into the fuel tank for a first set distance;
and S3, welding the exhaust joint on the outer side wall of the fuel tank, sealing the positioning pin so that the exhaust joint is communicated with the internal exhaust pipe, and keeping the distance between the outer end surface of the positioning pin and the inner bottom surface of the exhaust joint to be a second set distance.
10. A method of connecting an internal and external vent system for a plastic fuel tank as claimed in claim 9, wherein said first set distance is 5 mm; the second set distance is greater than 1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011269952.5A CN112406524A (en) | 2020-11-13 | 2020-11-13 | Internal and external exhaust system of plastic fuel tank and connecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011269952.5A CN112406524A (en) | 2020-11-13 | 2020-11-13 | Internal and external exhaust system of plastic fuel tank and connecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112406524A true CN112406524A (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011269952.5A Pending CN112406524A (en) | 2020-11-13 | 2020-11-13 | Internal and external exhaust system of plastic fuel tank and connecting method |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3117380A1 (en) * | 1981-05-02 | 1982-11-18 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart | "DEVICE FOR BLEEDING A FUEL TANK, ESPECIALLY FOR A MOTOR VEHICLE" |
| JPH09287533A (en) * | 1995-12-11 | 1997-11-04 | Hyundai Motor Co Ltd | Gas exhausting device for fuel tank |
| CN1955029A (en) * | 2005-10-28 | 2007-05-02 | 考特克斯·特克斯罗恩有限公司及两合公司 | Fuel tank |
| CN201102466Y (en) * | 2007-10-18 | 2008-08-20 | 亚普汽车部件有限公司 | LPG power vehicle tank |
| CN202541291U (en) * | 2012-01-04 | 2012-11-21 | 芜湖亚奇汽车部件有限公司 | Exhaust joint of fuel tank |
| CN202782655U (en) * | 2012-08-27 | 2013-03-13 | 亚普汽车部件股份有限公司 | Adjustable exhaust joint for plastic fuel box test |
| DE102013001389A1 (en) * | 2013-01-25 | 2014-07-31 | A. Kayser Automotive Systems Gmbh | Crankcase breather for an internal combustion engine, tank vent line and Verbindungssytem this |
| CN204506544U (en) * | 2015-01-21 | 2015-07-29 | 亚普汽车部件股份有限公司 | A kind of fuel tank of smooth gas discharge |
| CN105612076A (en) * | 2013-08-09 | 2016-05-25 | 考特克斯·特克斯罗恩有限公司及两合公司 | Operating fluid reservoir having an integrated venting and/or air admission valve |
| CN109606101A (en) * | 2018-12-19 | 2019-04-12 | 河北世昌汽车部件有限公司 | Exhaust apparatus, fuel tank and automobile |
| CN110254217A (en) * | 2019-06-12 | 2019-09-20 | 东风亚普汽车部件有限公司 | Fuel tank gasoline isolating device |
| CN110450443A (en) * | 2019-08-16 | 2019-11-15 | 亚普汽车部件股份有限公司 | Ducted body exhaust structure forms accessory, exhaust structure and ducted body forming method |
-
2020
- 2020-11-13 CN CN202011269952.5A patent/CN112406524A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3117380A1 (en) * | 1981-05-02 | 1982-11-18 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart | "DEVICE FOR BLEEDING A FUEL TANK, ESPECIALLY FOR A MOTOR VEHICLE" |
| JPH09287533A (en) * | 1995-12-11 | 1997-11-04 | Hyundai Motor Co Ltd | Gas exhausting device for fuel tank |
| CN1955029A (en) * | 2005-10-28 | 2007-05-02 | 考特克斯·特克斯罗恩有限公司及两合公司 | Fuel tank |
| CN201102466Y (en) * | 2007-10-18 | 2008-08-20 | 亚普汽车部件有限公司 | LPG power vehicle tank |
| CN202541291U (en) * | 2012-01-04 | 2012-11-21 | 芜湖亚奇汽车部件有限公司 | Exhaust joint of fuel tank |
| CN202782655U (en) * | 2012-08-27 | 2013-03-13 | 亚普汽车部件股份有限公司 | Adjustable exhaust joint for plastic fuel box test |
| DE102013001389A1 (en) * | 2013-01-25 | 2014-07-31 | A. Kayser Automotive Systems Gmbh | Crankcase breather for an internal combustion engine, tank vent line and Verbindungssytem this |
| CN105612076A (en) * | 2013-08-09 | 2016-05-25 | 考特克斯·特克斯罗恩有限公司及两合公司 | Operating fluid reservoir having an integrated venting and/or air admission valve |
| CN204506544U (en) * | 2015-01-21 | 2015-07-29 | 亚普汽车部件股份有限公司 | A kind of fuel tank of smooth gas discharge |
| CN109606101A (en) * | 2018-12-19 | 2019-04-12 | 河北世昌汽车部件有限公司 | Exhaust apparatus, fuel tank and automobile |
| CN110254217A (en) * | 2019-06-12 | 2019-09-20 | 东风亚普汽车部件有限公司 | Fuel tank gasoline isolating device |
| CN110450443A (en) * | 2019-08-16 | 2019-11-15 | 亚普汽车部件股份有限公司 | Ducted body exhaust structure forms accessory, exhaust structure and ducted body forming method |
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