CN105437954A - Evaporation pipeline for onboard refueling vapor recovery (ORVR) system - Google Patents
Evaporation pipeline for onboard refueling vapor recovery (ORVR) system Download PDFInfo
- Publication number
- CN105437954A CN105437954A CN201510977939.8A CN201510977939A CN105437954A CN 105437954 A CN105437954 A CN 105437954A CN 201510977939 A CN201510977939 A CN 201510977939A CN 105437954 A CN105437954 A CN 105437954A
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- pipe
- evaporation
- fuel
- refueling
- fuel tank
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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
- B60K15/03504—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
Abstract
The invention discloses an evaporation pipeline for an onboard refueling vapor recovery (ORVR) system. The evaporation pipeline comprises an evaporation pipe extending from the interior of a fuel tank; one end of the evaporation pipe is connected with a refueling stop valve and an oil injection limiting valve located in the fuel tank; the other end of the evaporation pipe is connected with a carbon tank outside the fuel tank; the end, connected with the carbon tank, of the evaporation pipe is of a diameter shrinkage structure, and the pipe diameter is reduced to 6.5 mm from 13.6 mm; the evaporation pipe is communicated with a circulating pipe communicated with the lateral wall of an inlet of a refueling pipe; the pipe diameter of the refueling pipe is 25-27 mm; a limiting base is arranged at the pipe opening of the refueling pipe. Compared with a traditional fuel evaporation pipeline, the pressure distribution and flow of fuel steam in the fuel tank can be effectively improved, diffusion of the fuel steam toward the atmosphere in the refueling process is greatly reduced, energy waste is effectively reduced, and environmental pollution caused in the refueling process is reduced.
Description
Technical field
The present invention relates to automotive fuel oil system technical field, especially relate to a kind of evaporation pipeline for ORVR system.
Background technology
The oil gas evaporation phenomenon that automobile produces in refueling process can cause serious disposal of pollutants and energy dissipation.According to statistics, often add the VOC gasoline boil-off gas that 1L gasoline just has about 1.5g and discharge from oil filling port, namely often add the VOC boil-off gas that 50L gasoline just has a 75g and discharge, the liquid gasoline that 75gVOC boil-off gas is equivalent to 100ml dissolves into the air.Adopt the vehicle petroleum vapor recovery situation of ORVR system to be clearly better, but still there are the following problems for fuel tank evaporation pipeline: fuel filler pipe can not carry out rational recycle to the steam produced in refueling process; The internal diameter of fuel filler pipe is more much bigger than the internal diameter of discharge vaporization mouth, and oil filling port does not seal, and therefore in refueling process, only has small part VOC to enter canister, and major part is then direct overflows from oil filling port; Current vehicle fuel adsorbing device (being generally canister) volume is (about 0.6 ~ 1L) less than normal generally, can not meet a large amount of fuel-steam adsorption functions; In addition, can not form good mating owing to evaporating the dimensions of pipeline with fuel filler pipe, fuel tank internal duct, in fuel tank, to circulate situation undesirable for oil gas.
Summary of the invention
The invention provides a kind of evaporation pipeline for ORVR system, object is to solve the larger problem of existing fuel tank VOC boil-off gas quantity discharged.
For achieving the above object, the present invention can take following technical proposals:
Evaporation pipeline for ORVR system of the present invention, comprise by the inner outwards extended evaporating tube put of fuel tank, described evaporating tube one end be positioned at described fuel tank add oil cut-off valve, oiling limit valve is connected respectively, the other end is connected with the canister be positioned at outside described fuel tank, one end that described evaporating tube is connected with canister is undergauge structure, and caliber is reduced to φ 6.5mm by φ 13.6mm; Described evaporating tube is communicated with circulating pipe, and described circulating pipe is communicated with fuel filler pipe import sidewall; Described fuel filler pipe caliber is φ 25-27mm, and its mouth of pipe place is provided with limit base.
The volume of described canister is 2 liters, is provided with shutoff valve and sensor.
Described circulating pipe caliber is φ 6.35mm.
Evaporation pipeline for ORVR system provided by the invention, compare conventional fuel oil evaporation pipeline, effectively can improve fuel-steam distribution of pressure and flowing in fuel tank, greatly reduce refueling process IFO intermediate fuel oil steam to the diffusion in air, effective reduction energy dissipation, reduces the environmental pollution caused in refueling process simultaneously.
Accompanying drawing explanation
Fig. 1 is perspective view of the present invention.
Fig. 2 is the structural representation of fuel filler pipe of the present invention.
Fig. 3 is the structural representation in I portion in Fig. 2.
Fig. 4 is that A in Fig. 3 is to structural representation.
Fig. 5 is that oil gas of the present invention moves towards schematic diagram.
Detailed description of the invention
As shown in Figure 1, 2, evaporation pipeline for ORVR system of the present invention, comprise by the fuel tank 1 inside outwards extended evaporating tube 2 put, evaporating tube 2 one end be positioned at fuel tank 1 add oil cut-off valve 3, oiling limit valve 4 is connected respectively, the other end is connected with the canister 5 be positioned at outside fuel tank 1.Particularly, inner at fuel tank 1, two add after oil cut-off valve 3 linked together by pipeline, be connected with evaporating tube 2 by sebific duct via after a check valve, oiling limit valve 4 is also connected with evaporating tube 2 by sebific duct, thus make evaporating tube 2, add oil cut-off valve 3, oiling limit valve 4 forms path, the fuel-steam in fuel tank 1 flows to canister 5 by evaporating tube 2.
For the formation of fuel tank internal pressure, the size of evaporating tube 2 plays vital effect, and the setting of its size directly has influence on height and the flow direction of the steam pressure in fuel tank 1.Evaporating tube 2 adopts that external diameter is 15mm, internal diameter is the stainless-steel pipe of 13.6mm, end adopts undergauge structure, internal diameter is reduced to 6.5mm by 13.6mm, then be connected with canister 5 by the sebific duct of FKM material, ensure steam pressure reasonable layout and the flow direction in fuel tank 1, effectively reduce the vapor sorption load of canister 5 simultaneously.The volume of this canister 5 increases to about 2 liters by about traditional 1 liter, greatly improves oil gas absorbing usefulness; On canister 5, also increase shutoff valve, connection for bbreather pipe sensor in addition, effectively can control volatilization and the desorption of fuel-steam.
The evaporating tube 2 being positioned at oiling limit valve 4 place is communicated with the circulating pipe 6 that external diameter is φ 6.35mm, wall thickness is 0.7mm, and circulating pipe 6 is communicated with fuel filler pipe 7 import sidewall; This fuel filler pipe 7 is SPCF material, is spun into " it " font structure through special process, and is provided with oil filling port 7a(as shown in Figure 3 by welding manner in the shell of inflow point), effectively prevent fuel-steam from overflowing.According to petrol service station nozzle dimensional parameters, in conjunction with refueling process IFO intermediate fuel oil steam in the pressure of fuel tank, fuel pipe and flow regime, fuel filler pipe 7 caliber is generally φ 25-27mm, in this example, external diameter is 27.1mm, internal diameter is 25.1mm, and in inflow point, limit base 8(is set as shown in Figure 4), avoid nozzle to insert fuel filler pipe excessively dark, cause nozzle and oil filling port gouging abrasion.
As shown in Figure 5, when refueling to fuel tank 1, the fuel-steam in case by adding oil cut-off valve 3, oiling limit valve 4 enters in evaporating tube 2, a part turns back in fuel filler pipe 7 through circulating pipe 6 and re-uses, and another part is absorbed by canister 5.Line seal of the present invention is good, and inner oil gas circulates in order, not only increases fuel oil and adds effective value, and decreases the pollution of fuel-steam to environment.
Claims (3)
1. the evaporation pipeline for ORVR system, comprise by the inner outwards extended evaporating tube (2) put of fuel tank (1), described evaporating tube (2) one end be positioned at described fuel tank (1) add oil cut-off valve (3), oiling limit valve (4) is connected respectively, the other end be positioned at described fuel tank (1) canister outward (5) and be connected, it is characterized in that: one end that described evaporating tube (2) is connected with canister (5) is undergauge structure, and caliber is reduced to φ 6.5mm by φ 13.6mm; Described evaporating tube (2) is communicated with circulating pipe (6), described circulating pipe (6) is communicated with fuel filler pipe (7) import sidewall; Described fuel filler pipe (7) caliber is φ 25-27mm, and its mouth of pipe place is provided with limit base (8).
2. the evaporation pipeline for ORVR system according to claim 1, is characterized in that: the volume of described canister (5) is 2 liters, is provided with shutoff valve and sensor.
3. the evaporation pipeline for ORVR system according to claim 1, is characterized in that: described circulating pipe (6) caliber is φ 6.35mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510977939.8A CN105437954B (en) | 2015-12-23 | 2015-12-23 | For the evaporation tube road of ORVR systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510977939.8A CN105437954B (en) | 2015-12-23 | 2015-12-23 | For the evaporation tube road of ORVR systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105437954A true CN105437954A (en) | 2016-03-30 |
| CN105437954B CN105437954B (en) | 2018-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510977939.8A Active CN105437954B (en) | 2015-12-23 | 2015-12-23 | For the evaporation tube road of ORVR systems |
Country Status (1)
| Country | Link |
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| CN (1) | CN105437954B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107650673A (en) * | 2017-10-26 | 2018-02-02 | 宁波舜江汽车部件制造有限公司 | It is a kind of that there is the automobile fuel filler pipe assembly for returning depressed structure |
| CN108215777A (en) * | 2017-12-28 | 2018-06-29 | 武汉腾索科技有限公司 | A kind of fuel tank pipeline structure |
| CN109552027A (en) * | 2019-01-24 | 2019-04-02 | 朱超 | A kind of automatically controlled fuel system |
| CN110385981A (en) * | 2019-06-26 | 2019-10-29 | 江铃汽车股份有限公司 | Hybrid vehicle pressure-oil tank and pressure-oil tank system |
| CN110843510A (en) * | 2019-12-04 | 2020-02-28 | 郑州日产汽车有限公司 | Novel ORVR steam recovery oil pipe assembly |
| CN114962084A (en) * | 2022-04-26 | 2022-08-30 | 一汽奔腾轿车有限公司 | Fuel evaporation emission control system and control method for hybrid vehicle and application of fuel evaporation emission control system |
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| CN103723030A (en) * | 2012-10-12 | 2014-04-16 | 日产自动车株式会社 | Reinforcement structure for a vehicle fuel filler tube |
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| CN205256004U (en) * | 2015-12-23 | 2016-05-25 | 郑州日产汽车有限公司 | A evaporation pipeline for ORVR system |
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2015
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Patent Citations (7)
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| US4821908A (en) * | 1987-09-03 | 1989-04-18 | General Motors Corporation | On-board refueling vapor recovery system |
| US20010054452A1 (en) * | 2000-06-27 | 2001-12-27 | Nissan Motor Co., Ltd. | Refueling control valve and fuel tank device having the same |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107650673A (en) * | 2017-10-26 | 2018-02-02 | 宁波舜江汽车部件制造有限公司 | It is a kind of that there is the automobile fuel filler pipe assembly for returning depressed structure |
| CN107650673B (en) * | 2017-10-26 | 2023-07-14 | 宁波舜江汽车部件制造有限公司 | Automobile oil filling pipe assembly with return air structure |
| CN108215777A (en) * | 2017-12-28 | 2018-06-29 | 武汉腾索科技有限公司 | A kind of fuel tank pipeline structure |
| CN109552027A (en) * | 2019-01-24 | 2019-04-02 | 朱超 | A kind of automatically controlled fuel system |
| CN109552027B (en) * | 2019-01-24 | 2023-10-27 | 安徽尼威汽车动力***有限公司 | Electronically controlled fuel system |
| CN110385981A (en) * | 2019-06-26 | 2019-10-29 | 江铃汽车股份有限公司 | Hybrid vehicle pressure-oil tank and pressure-oil tank system |
| CN110843510A (en) * | 2019-12-04 | 2020-02-28 | 郑州日产汽车有限公司 | Novel ORVR steam recovery oil pipe assembly |
| CN114962084A (en) * | 2022-04-26 | 2022-08-30 | 一汽奔腾轿车有限公司 | Fuel evaporation emission control system and control method for hybrid vehicle and application of fuel evaporation emission control system |
| CN114962084B (en) * | 2022-04-26 | 2024-05-14 | 一汽奔腾轿车有限公司 | Fuel evaporation and emission control system and control method for hybrid electric vehicle and application of fuel evaporation and emission control system and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105437954B (en) | 2018-06-15 |
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Address after: No. 181 Jianshe South Road, Zhongmou County, Zhengzhou City, Henan Province 450016 Patentee after: Zhengzhou Nissan Automotive Co., Ltd. Address before: 450016 No. eighth, 369 East Road, Zhengzhou economic and Technological Development Zone, Henan, China Patentee before: Zhengzhou Nissan Automotive Co., Ltd. |
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