CN101648514A - Fuel supply system of double-fuel automobile - Google Patents
Fuel supply system of double-fuel automobile Download PDFInfo
- Publication number
- CN101648514A CN101648514A CN200910192070A CN200910192070A CN101648514A CN 101648514 A CN101648514 A CN 101648514A CN 200910192070 A CN200910192070 A CN 200910192070A CN 200910192070 A CN200910192070 A CN 200910192070A CN 101648514 A CN101648514 A CN 101648514A
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- Prior art keywords
- fuel
- tank
- supply system
- engine
- canister
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- 239000000446 fuel Substances 0.000 title claims abstract description 91
- 239000002828 fuel tank Substances 0.000 claims abstract description 25
- 239000000295 fuel oil Substances 0.000 claims abstract description 12
- 239000003921 oil Substances 0.000 claims description 32
- 241001347978 Major minor Species 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 16
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- 238000001704 evaporation Methods 0.000 abstract description 3
- 230000008020 evaporation Effects 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 239000003502 gasoline Substances 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 206010020852 Hypertonia Diseases 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
Images
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- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention aims to provide a fuel supply system of a double-fuel automobile, comprising a main fuel tank, an assistant fuel tank, a main fuel passage and an assistant fuel passage, wherein the mainfuel tank is communicated with a main fuel track in an engine by the main fuel passage; the assistant fuel tank is communicated with an assistant fuel track in the engine by the assistant fuel passage and the main fuel passage and the assistant fuel passage are both provided with filters for filtering fuel and pressure regulators for regulating the pressure of the fuel tanks. The fuel supply system is characterized in that the main fuel tank and the assistant fuel tank are both provided with gravity valves which are communicated with a carbon can by a three-way valve; the carbon can is communicated with a gas inlet branch pipe of the engine by an electromagnetic valve controlled by an ECU and the carbon can is also provided with an atmosphere port. The fuel supply system is used for supplying fuel to the engine by two fuel supply fuel passages, thereby solving the problem of difficult cold starting of methanol fuel; and the two fuel supply passages share the carbon can, thereby the cost is reduced on the premise of ensuring that the evaporation discharge of fuel oil is effectively controlled.
Description
Technical field
The present invention relates to the Fuel supply system of automobile, particularly is that main fuel, gasoline are the Fuel supply system of the dual-fuel automobile of auxilliary fuel with methyl alcohol.
Background technology
High day by day along with oil price is that the dual-fuel automobile of main fuel more and more comes into one's own and welcomes with methyl alcohol.Traditional is that the Fuel supply system of mono fuel vehicle of fuel is fairly perfect with gasoline or diesel oil, but the fuel oil system of dual-fuel automobile relates to problems such as fuel oil switching, and is imperfect as yet so far, particularly the discharge vaporization control aspect of fuel oil, be related to problem of environmental pollution, can not be ignored.
The Fuel supply system of mono fuel vehicle as shown in Figure 1, its discharge vaporization control method is as follows: fuel tank communicates with engine intake manifold by the activated carbon canister, when ambient temperature raises, the fuel volatile quantity of gasoline fuel tank strengthens, make the vapor pressure in the fuel tank increase, weight valve (GVV) is backed down by fuel vapor, fuel vapor enter canister by pipeline and are adsorbed onto on the activated carbon granule, when driving engine during in the work of suitable operating mode, the ECU control electromagnetic valve is opened, under the effect of engine intake manifold degree of vacuum, fresh air enters canister from the atmosphere entry of Charcoal canister, to be adsorbed onto that fuel oil washes away on the activated carbon granule, and be drawn onto in the cylinder with the form of oil gas and to burn, thereby avoid fuel vapor leak contaminated environment in the atmosphere.
Summary of the invention
The objective of the invention is to propose a kind of Fuel supply system of dual-fuel automobile, under the prerequisite that guarantees effectively control fuel oil evaporation discharging, cost-cutting.
The Fuel supply system of dual-fuel automobile of the present invention comprises main oil tank, additional fuel tank and working connection and auxiliary oil circuit, described main oil tank communicates with in-engine main fuel oil rail by working connection, and described additional fuel tank communicates with in-engine secondary bunker oil rail by auxiliary oil circuit; Described working connection and auxiliary oil circuit are provided with the fil of filter fuel and regulate the pressure regulator of tank pressure, key is that described main oil tank and additional fuel tank are provided with weight valve, the weight valve of main oil tank and additional fuel tank communicates with canister by a triple valve, described canister communicates with the induction maniflod of driving engine by an electromagnetic valve by ECU control, and described canister also is provided with an atmosphere entry.
Methyl alcohol is clean fuel, and the pollutant emission of burning is few, has than gasoline and more significant low NOx of diesel oil and particulate emission, and methyl alcohol utilizes the heat efficiency height at combustion engine in addition.The present invention has adopted two fuel delivery oil circuits, and two cover supply oil circuits connect oily rail and injection system separately respectively, avoid fuel mix, can utilize the Fuel Petroleum cold start-up, thereby solve the problem of methyl alcohol cold start-up difficulty; The shared canister of two cover fuel system carries out the absorption and the desorption control of evaporative emissions, has controlled formaldehyde, unburned methyl alcohol blowdown and the discharging of cold starting system generated contaminant simultaneously, and has reduced cost, makes things convenient for the layout of machinery space.
Be the effectively switching of the major-minor fuel of control, described ECU links to each other with an engine water temperature sensor, when Engine Coolant Temperature is higher, just means the problem that can not exist methanol fuel to start difficulty, ECU control this moment driving engine adopts methanol fuel, otherwise adopts the Fuel Petroleum cold start-up.In like manner, described ECU can also link to each other with an induction maniflod air-temperature sensor, controls the switching of major-minor fuel with reference to the gentle induction maniflod temperature of engine water.
Control the switching of major-minor fuel for the ease of chaufeur at different situations, described ECU preferably links to each other with a major-minor switching hand switch, utilizes hand switch to select employed fuel.
Control the mode of engine starting for the ease of chaufeur at different situations, described ECU preferably forces the cold start-up hand switch to link to each other with one, utilizes hand switch to select the mode of engine starting.
The atmosphere entry of described canister is provided with the dustproof blanking cover of canister, can prevent effectively that the dust in the atmosphere from entering canister, influences the charcoal absorption effect, reduces the service life of active carbon in the canister.
The Fuel supply system of dual-fuel automobile of the present invention utilizes two cover fuel delivery oil circuits to be engine oil, solved the problem of methanol fuel cold start-up difficulty, and utilize the methods of two cover fuel delivery oil circuits shared canisters, under the prerequisite that guarantees effectively control fuel oil evaporation discharging, reduced cost.
Description of drawings
Fig. 1 is the Fuel supply system schematic diagram of traditional mono fuel vehicle;
Fig. 2 is the Fuel supply system schematic diagram of dual-fuel automobile of the present invention.
The specific embodiment
Describe the present invention in detail below in conjunction with specific embodiments and the drawings.
Embodiment 1:
As shown in Figure 2, the Fuel supply system of the dual-fuel automobile of present embodiment comprises main oil tank, additional fuel tank and working connection and auxiliary oil circuit, described main oil tank communicates with in-engine main fuel oil rail by working connection, and described additional fuel tank communicates with in-engine secondary bunker oil rail by auxiliary oil circuit; Be provided with the fil of filter fuel and the pressure regulator of adjusting tank pressure in described working connection and the auxiliary oil circuit, the fuel of fuel tank enters driving engine after filtering by fil, when the hypertonia in the oil circuit, fuel oil can also be got back in the fuel tank by pressure regulator; Described main oil tank and additional fuel tank are provided with weight valve (i.e. GVV among the figure), the weight valve of main oil tank and additional fuel tank communicates with canister by a triple valve, described canister communicates with the induction maniflod of driving engine by an electromagnetic valve by ECU control, and described canister also is provided with an atmosphere entry.
When ambient temperature raises, fuel volatile quantity in the fuel tank strengthens, make the vapor pressure in the fuel tank increase, weight valve (GVV) is backed down by fuel vapor, fuel vapor enter canister by pipeline and triple valve and are adsorbed onto on the activated carbon granule, when driving engine during in the work of suitable operating mode, the ECU control electromagnetic valve is opened, under the effect of engine intake manifold degree of vacuum, fresh air enters canister from the atmosphere entry of canister, to be adsorbed onto that fuel oil washes away on the activated carbon granule, and be drawn onto in the cylinder with the form of oil gas and to burn, thereby avoid fuel vapor to flow to contaminated environment in the atmosphere.
Be the effectively switching of the major-minor fuel of control, described ECU links to each other with the induction maniflod air-temperature sensor with engine water temperature sensor, when Engine Coolant Temperature or induction maniflod temperature are higher, just mean the problem that can not exist methanol fuel to start difficulty, ECU control this moment driving engine adopts methanol fuel, otherwise adopts the Fuel Petroleum cold start-up.
Control the switching of major-minor fuel for the ease of chaufeur at different situations, described ECU links to each other with a major-minor switching hand switch.
Control the mode of engine starting for the ease of chaufeur at different situations, described ECU forces the cold start-up hand switch to link to each other with one.
The atmosphere entry of described canister is provided with the dustproof blanking cover (not drawing among the figure) of canister, can prevent effectively that the dust in the atmosphere from entering canister, influences the charcoal absorption effect, reduces the service life of active carbon in the canister.
Claims (6)
1, a kind of Fuel supply system of dual-fuel automobile, comprise main oil tank, additional fuel tank and working connection and auxiliary oil circuit, described main oil tank communicates with in-engine main fuel oil rail by working connection, and described additional fuel tank communicates with in-engine secondary bunker oil rail by auxiliary oil circuit; Described working connection and auxiliary oil circuit are provided with the fil of filter fuel and regulate the pressure regulator of tank pressure, it is characterized in that described main oil tank and additional fuel tank are provided with weight valve, the weight valve of main oil tank and additional fuel tank communicates with canister by a triple valve, described canister communicates with the induction maniflod of driving engine by an electromagnetic valve by ECU control, and described canister also is provided with an atmosphere entry.
2, the Fuel supply system of dual-fuel automobile according to claim 1 is characterized in that described ECU links to each other with an engine water temperature sensor.
3, the Fuel supply system of dual-fuel automobile according to claim 1 and 2 is characterized in that described ECU links to each other with an induction maniflod air-temperature sensor.
4, the Fuel supply system of dual-fuel automobile according to claim 1 is characterized in that described ECU links to each other with a major-minor switching hand switch.
5, the Fuel supply system of dual-fuel automobile according to claim 1 is characterized in that described ECU forces the cold start-up hand switch to link to each other with one.
6, the Fuel supply system of dual-fuel automobile according to claim 1 is characterized in that the atmosphere entry of described canister is provided with the dustproof blanking cover of canister.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910192070A CN101648514A (en) | 2009-09-04 | 2009-09-04 | Fuel supply system of double-fuel automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910192070A CN101648514A (en) | 2009-09-04 | 2009-09-04 | Fuel supply system of double-fuel automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101648514A true CN101648514A (en) | 2010-02-17 |
Family
ID=41670884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910192070A Pending CN101648514A (en) | 2009-09-04 | 2009-09-04 | Fuel supply system of double-fuel automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101648514A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818695A (en) * | 2010-03-25 | 2010-09-01 | 艾希波 | Method for refitting and controlling methanol/gasoline dual-fuel control system of new-energy automobile |
| CN102338000A (en) * | 2011-09-28 | 2012-02-01 | 刘孟波 | Fuel control device of dual-fuel automobile |
| CN106014749A (en) * | 2015-03-26 | 2016-10-12 | 罗伯特·博世有限公司 | Apparatus and method for assisting cold start of engine |
| CN108223200A (en) * | 2017-12-14 | 2018-06-29 | 湖南吉利汽车部件有限公司 | A kind of system and diagnostic method for supporting fuel vaporization leakage diagnosis |
| CN109723586A (en) * | 2019-01-28 | 2019-05-07 | 西华大学 | For being in solid bio-fuel feedway under the normal temperature and pressure of internal combustion engine |
| TWI681113B (en) * | 2014-01-21 | 2020-01-01 | 德商羅伯特博斯奇股份有限公司 | An apparatus for purging fuel vapours from a fuel tank |
| CN112502823A (en) * | 2020-11-27 | 2021-03-16 | 奇瑞汽车股份有限公司 | Dual-fuel active precombustion chamber engine and automobile |
-
2009
- 2009-09-04 CN CN200910192070A patent/CN101648514A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818695A (en) * | 2010-03-25 | 2010-09-01 | 艾希波 | Method for refitting and controlling methanol/gasoline dual-fuel control system of new-energy automobile |
| CN101818695B (en) * | 2010-03-25 | 2014-11-26 | 艾希波 | Method for refitting and controlling methanol/gasoline dual-fuel control system of new-energy automobile |
| CN102338000A (en) * | 2011-09-28 | 2012-02-01 | 刘孟波 | Fuel control device of dual-fuel automobile |
| TWI681113B (en) * | 2014-01-21 | 2020-01-01 | 德商羅伯特博斯奇股份有限公司 | An apparatus for purging fuel vapours from a fuel tank |
| CN106014749A (en) * | 2015-03-26 | 2016-10-12 | 罗伯特·博世有限公司 | Apparatus and method for assisting cold start of engine |
| CN106014749B (en) * | 2015-03-26 | 2019-07-23 | 罗伯特·博世有限公司 | The device and method of cold start-up for assisted engine |
| CN108223200A (en) * | 2017-12-14 | 2018-06-29 | 湖南吉利汽车部件有限公司 | A kind of system and diagnostic method for supporting fuel vaporization leakage diagnosis |
| CN108223200B (en) * | 2017-12-14 | 2020-04-21 | 湖南吉利汽车部件有限公司 | System supporting fuel evaporation leakage diagnosis and diagnosis method |
| CN109723586A (en) * | 2019-01-28 | 2019-05-07 | 西华大学 | For being in solid bio-fuel feedway under the normal temperature and pressure of internal combustion engine |
| CN109723586B (en) * | 2019-01-28 | 2023-08-18 | 西华大学 | Solid biofuel supply device for internal combustion engine at normal temperature and normal pressure |
| CN112502823A (en) * | 2020-11-27 | 2021-03-16 | 奇瑞汽车股份有限公司 | Dual-fuel active precombustion chamber engine and automobile |
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Application publication date: 20100217 |