CN102588124B - Automobile dual-fuel supply system based on single fuel rail and single fuel injector set - Google Patents
Automobile dual-fuel supply system based on single fuel rail and single fuel injector set Download PDFInfo
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- CN102588124B CN102588124B CN 201210079076 CN201210079076A CN102588124B CN 102588124 B CN102588124 B CN 102588124B CN 201210079076 CN201210079076 CN 201210079076 CN 201210079076 A CN201210079076 A CN 201210079076A CN 102588124 B CN102588124 B CN 102588124B
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Abstract
The invention discloses an automobile dual-fuel supply system based on a single fuel rail and a single fuel injector set, which relates to automobile fuel supply systems. The system is structurally characterized in that a gasoline fuel tank, a gasoline pump, a gasoline pressure adjustor, a gasoline one-way valve, a three-way valve, a fuel rail, a fuel injector and an engine are sequentially connected to form a gasoline fuel supply unit, a methanol fuel tank, a methanol pump, a methanol pressure adjustor, a methanol one-way valve, a three-way valve, the oil rail, the fuel injector and the engine are sequentially connected to form a methanol fuel supply unit, and an electronic control unit is respectively connected with two sensors and four executive parts to realize control and switching from the gasoline fuel supply unit to the methanol fuel supply unit. By means of the automobile dual-fuel supply system, high power performance, fuel economy, environment-friendliness in discharge and safety and reliability in control can be obtained.
Description
Technical field
The present invention relates to the automotive fuel supply system, particularly a kind of Double-fuel supply system based on single oily rail and single cover oil sprayer.
Background technique
21 century, facing mankind the crisis that energy shortage and environmental pollution go from bad to worse.Along with the surge of automobile quantity in world wide and the consumption of petroleum resources, contradiction between oil supply and demand constantly aggravates.In order to tackle the problem at its root, carry out comprehensive improvement; Adopting substitute fuel is a kind of effective method, and application methyl alcohol is one of problem of research at present as alternative motor fuels.
In order fundamentally to solve energy shortage and environmental pollution problem, the fuel oil supply system scheme of gasoline, methyl alcohol duel fuel engine has been proposed, realized that Fuel Petroleum supplies with the parallel use of supplying with methanol fuel.
At present, what China's most of dual-fuel automotive fuel supply system adopted is two oily rail technological schemes, and a set of oily rail provides Fuel Petroleum, and another set of oily rail provides methanol fuel.This scheme has lower column defects:
1, because two oily rails and two cover oil sprayers are arranged, not only take up room large, and cost of production is high;
2, two cover oil sprayers cause the injection direction difficult design, if design an injection direction the best, must cause another injection direction can not be best, affect the performance of fuel supply system;
3, the viscosity of methyl alcohol provides the oil sprayer of methanol fuel, owing to must cause the regular obstruction of its nozzle.
4, because the methyl alcohol burning-point is high, starting difficulty during low temperature.
Summary of the invention
Purpose of the present invention just is to overcome the deficiency of above-mentioned existing background technique, and a kind of Double-fuel supply system based on single oily rail and single cover oil sprayer is provided.
The objective of the invention is to be achieved through the following technical solutions:
For the narrow limitation of traditional automobile list fuel supply system, share on this basis a set of three-way valve, oily rail, oil sprayer and motor, effectively improved the control efficiency of dual fuel supply system, control convenient, flexiblely, and save system cost.
Specifically, native system is comprised of methanol fuel tank, methanol pump, methyl alcohol pressure governor, solenoid valve, oily rail, oil sprayer, methyl alcohol one-way valve, three-way valve, gasoline one-way valve, gasoline pressure governor, petrol pump, Fuel Petroleum case, motor and electronic control unit;
Be provided with petrol pump and gasoline pressure governor in the Fuel Petroleum case;
Fuel Petroleum case, petrol pump, gasoline pressure governor, gasoline one-way valve, three-way valve, oily rail, oil sprayer and motor connect and compose the Fuel Petroleum feed unit successively;
Be provided with methanol pump and methyl alcohol pressure governor in methanol fuel tank;
Methanol fuel tank, methanol pump, methyl alcohol pressure governor, methyl alcohol one-way valve, three-way valve, oily rail, oil sprayer, motor connect successively, form the methanol fuel feed unit;
Oil rail, solenoid valve are connected successively with methanol fuel tank, during Fuel switching, methyl alcohol or Fuel Petroleum remaining in oily rail are recovered in methanol fuel tank, are convenient to gasoline or the starting of methanol fuel feed unit;
The common sparing of two kinds of fuel supply units is oily rail, oil sprayer, motor and three-way valve;
Cooling-water temperature transmitter is placed on engine body, and intake air temperature sensor is placed on engine intake manifold; The petrol pump relay is connected with petrol pump, and solenoid relay valve is connected with solenoid valve, and the spark coil of igniting driver module and motor is connected, and the methanol pump relay is connected with methanol pump;
Electronic control unit is connected with four power units with above-mentioned two sensors respectively, realizes controlling.
The present invention has the following advantages and good effect:
1. the present invention includes gasoline and methyl alcohol two cover fuel supply units, but only share a set of oily rail system, intake manifold, without redesign, is saved design cycle and expense, and system is simple, and cost is low;
2. intake manifold of the present invention is not done any change, and the modifying system intake manifold on existing market arranges two groups of injection apparatus, can not guarantee that the spray angle of two kinds of raw materials is all best;
3. owing in the methanol fuel use, easily producing and stopping up, the twin nipple scheme is sprayed one group of nozzle operation a period of time of methyl alcohol and must be cleaned; And the present invention adopts Fuel Petroleum work when cold-starting, after starting, system automatically switches to methanol fuel work, and each work cycle Fuel Petroleum has cleaning action to the methyl alcohol residue in nozzle, so the present invention makes nozzle be not easy to produce, stops up;
4. the present invention has thoroughly solved the problem of methanol fuel for vehicles cold starting difficulty, realize that gasoline, methyl alcohol automatically switch, and when switching fuel, can guarantee that vehicle operating is smooth-going, stop shake and flame-out phenomenon, the assurance emission performance is good, and methyl alcohol just can directly use without any additive, and the methyl alcohol substitution rate reaches 100%.
In a word, the present invention can obtain the Economy of good power character, fuel, the feature of environmental protection of discharge and the safety reliability of control, is applicable to the Double-fuel supply system.
The accompanying drawing explanation
The structural representation that Fig. 1 is native system;
The control principle skeleton diagram that Fig. 2 is electronic control unit;
The workflow diagram that Fig. 3 is electronic control unit.
In figure:
1-methanol fuel tank, 2-methanol pump, 2.1-methanol pump relay,
3-methyl alcohol pressure governor, 4-solenoid valve, 4.1-solenoid relay valve,
5-oily rail, 6-oil sprayer, 7-methyl alcohol one-way valve,
8-three-way valve, 9-gasoline one-way valve, 10-gasoline pressure governor,
11-petrol pump, 11.1-petrol pump relay, 12-Fuel Petroleum case,
13-motor, 13.1-igniting driver module, 13.2-cooling-water temperature transmitter,
13.3-intake air temperature sensor,
14-electronic control unit (ECU).
Embodiment
Below in conjunction with drawings and Examples, describe in detail:
One, general structure
As Fig. 1, native system is comprised of methanol fuel tank 1, methanol pump 2, methyl alcohol pressure governor 3, solenoid valve 4, oily rail 5, oil sprayer 6, methyl alcohol one-way valve 7, three-way valve 8, gasoline one-way valve 9, gasoline pressure governor 10, petrol pump 11, Fuel Petroleum case 12, motor 13 and electronic control unit (ECU) 14;
1, Fuel Petroleum feed unit
Be provided with petrol pump 11 and gasoline pressure governor 10 in Fuel Petroleum case 12;
2, methanol fuel feed unit
Be provided with methanol pump 2 and methyl alcohol pressure governor 3 in methanol fuel tank 1;
Methanol fuel tank 1, methanol pump 2, methyl alcohol pressure governor 3, methyl alcohol one-way valve 7, three-way valve 8, oily rail 5, oil sprayer 6, motor 13 connect successively, form the methanol fuel feed unit, are the independent methanol fuel of supplying with of motor 13;
3, the common sparing of two feed units
The common sparing of two kinds of fuel supply units is oily rail 5, oil sprayer 6, motor 13 and three-way valve 8.
4, electronic control unit (ECU) 14
Cooling-water temperature transmitter 13.2 is placed on motor 13 bodies, and intake air temperature sensor 13.3 is placed on engine intake manifold; Petrol pump relay 11.1 is connected with petrol pump 11, and solenoid relay valve 4.1 is connected with solenoid valve 4, and igniting driver module 13.1 is connected with the spark coil of motor 13, and methanol pump relay 2.1 is connected with methanol pump;
Electronic control unit (ECU) 14 is connected with four power units with above-mentioned two sensors respectively, realizes controlling.
Two, working procedure
1. when the Fuel Petroleum feed unit works independently
Petrol pump 11 picks up Fuel Petroleum from Fuel Petroleum case 12 is interior, carry out pressure regulation through gasoline pressure governor 10, and make excessive fuel oil return to petrol tank 12, through fuel filter elimination impurity, then be dispensed into gasoline one-way valve 9 through transport pipe, then arrive oily rail 5 and oil sprayer 6, the instruction of sending according to electronic control unit (ECU) 14 through three-way valve 8, appropriate fuel oil is sprayed into to each intake manifold, thereby completed the Fuel Petroleum oil spout, supply with process.
2. when the methanol fuel feed unit works independently
While 3. being switched to the methanol fuel feed unit by the Fuel Petroleum feed unit
When ambient temperature is too low while causing methanol fuel not light a fire, need to, by the work of Fuel Petroleum feed unit, pilot engine.
When the Fuel Petroleum supply system is worked, the gas-filling temperature when motor 13 work (by coolant temperature and intake temperature calculate and value) reach while setting operating temperature, the Fuel Petroleum supply system switches from trend methanol fuel supply system.Now petrol pump 11 quits work, methanol pump 2 is started working, methanol pump 2 picks up methyl alcohol from methanol fuel tank 1 is interior, carry out pressure regulation through methyl alcohol pressure governor 3, and make excessive methyl alcohol return to methanol fuel tank 1, through methyl alcohol filter decontamination, then through transport pipe, be dispensed into methyl alcohol one-way valve 7, arrive oily rail 5 and oil sprayer 6 through three-way valve 8 again, electronic control unit (ECU) 14 is controlled oil sprayers 6 and is carried out work.
In this switching, electronic control unit (ECU) 14 is controlled solenoid valve 4 and is opened, in order to the part gasoline in oily rail 5 is pushed back in methanol fuel tank 1, then shut electromagnetic valve 4, guarantee the normal operation oil pressure that the methyl alcohol oil circuit provides.
4. when Fuel Petroleum feed unit and methanol fuel feed unit work independently, solenoid valve 4, all in closed condition, guarantees the normal operation oil pressure of internal system.Motor 13 is all at first to be worked by the Fuel Petroleum feed unit when each starting, then according to the gas-filling temperature index, determines whether to carry out Fuel switching.
Three, functional part
The all functions parts are part commonly used, and the listing product is all arranged.
Below stress electronic control unit (ECU) 14
1, hardware configuration is:
Electronic control unit ECU is control and the command center of engine system, and it comprises 16 singlechip CPU (Flash is that 256K, dominant frequency are 64Mhz), the sensor be connected with the input end of this single-chip microcomputer and the power unit be connected with the output terminal of single-chip microcomputer.
2, workflow
As Fig. 3, this workflow comprises the following steps:
1. start A;
2. petrol pump 11 starts B; Solenoid valve 4 drives, and the methyl alcohol in 3 seconds drained oily rails 5 is to C in methanol fuel tank 1;
3. motor 13 and the spark coil D that simultaneously works;
4. determine Fuel switching E according to intake temperature and coolant temperature;
5. petrol pump 11 cuts out F, methanol pump 2 work simultaneously; Solenoid valve 4 drives, and the gasoline in drained oily rail 5 is to G in methanol fuel tank 1;
6. motor 13 is with methyl alcohol mode work H.
Claims (3)
1. the Double-fuel supply system based on single oily rail and single cover oil sprayer is characterized in that:
By methanol fuel tank (1), methanol pump (2), methyl alcohol pressure governor (3), solenoid valve (4), oily rail (5), oil sprayer (6), methyl alcohol one-way valve (7), three-way valve (8), gasoline one-way valve (9), gasoline pressure governor (10), petrol pump (11), Fuel Petroleum case (12), motor (13) and electronic control unit (14), formed;
Be provided with petrol pump (11) and gasoline pressure governor (10) in Fuel Petroleum case (12);
Fuel Petroleum case (12), petrol pump (11), gasoline pressure governor (10), gasoline one-way valve (9), three-way valve (8), oily rail (5), oil sprayer (6) and motor (13) connect and compose the Fuel Petroleum feed unit successively;
Be provided with methanol pump (2) and methyl alcohol pressure governor (3) in methanol fuel tank (1);
Methanol fuel tank (1), methanol pump (2), methyl alcohol pressure governor (3), methyl alcohol one-way valve (7), three-way valve (8), oily rail (5), oil sprayer (6), motor (13) connect successively, form the methanol fuel feed unit;
Oil rail (5), solenoid valve (4) are connected successively with methanol fuel tank (1);
The common sparing of two kinds of fuel supply units is oily rail (5), oil sprayer (6), motor (13) and three-way valve (8);
Cooling-water temperature transmitter (13.2) is placed on motor (13) body, and intake air temperature sensor (13.3) is placed on engine intake manifold; Petrol pump relay (11.1) is connected with petrol pump (11), solenoid relay valve (4.1) is connected with solenoid valve (4), igniting driver module (13.1) is connected with the spark coil of motor (13), and methanol pump relay (2.1) is connected with methanol pump (2);
Electronic control unit (14) is connected with four power units with above-mentioned two sensors respectively, realizes controlling.
2. by a kind of Double-fuel supply system based on single oily rail and single cover oil sprayer claimed in claim 1, it is characterized in that:
Described electronic control unit (14) is control and the command center of motor (13), the sensor that comprise 16 single-chip microcomputers, with the input end of this single-chip microcomputer, is connected and the power unit be connected with the output terminal of single-chip microcomputer.
3. by the control flow of a kind of Double-fuel supply system based on single oily rail and single cover oil sprayer claimed in claim 1, it is characterized in that comprising the following steps:
1. starting (A);
2. petrol pump (11) starting (B); Solenoid valve (4) drives, and the methyl alcohol in 3 seconds drained oily rail (5) is to (C) in methanol fuel tank (1);
3. motor (13) and spark coil work (D) simultaneously;
4. determine Fuel switching (E) according to intake temperature and coolant temperature;
5. petrol pump (11) cuts out (F), methanol pump (2) work simultaneously; Solenoid valve (4) drives, and the gasoline in drained oily rail (5) is to (G) in methanol fuel tank (1);
6. motor (13) is with methyl alcohol mode work (H).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201210079076 CN102588124B (en) | 2012-03-23 | 2012-03-23 | Automobile dual-fuel supply system based on single fuel rail and single fuel injector set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210079076 CN102588124B (en) | 2012-03-23 | 2012-03-23 | Automobile dual-fuel supply system based on single fuel rail and single fuel injector set |
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| CN102588124A CN102588124A (en) | 2012-07-18 |
| CN102588124B true CN102588124B (en) | 2013-12-25 |
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| CN102937061B (en) * | 2012-11-27 | 2015-02-18 | 东风汽车公司 | Methanol supply device for fuel-methanol dual-fuel engine and using method of methanol supply device |
| CN103590925B (en) * | 2013-11-27 | 2016-07-13 | 哈尔滨市展鸿化工产品销售有限公司 | Automobile double computer, double; two fuel reserve tank, double; two fuel dispenser, double; two injection electric injection system |
| CN103628989A (en) * | 2013-11-28 | 2014-03-12 | 武汉市菱电汽车电子有限责任公司 | Automotive CNG and gasoline double-fuel supply system based on simultaneous control by single ECU |
| CN104832329B (en) * | 2014-11-27 | 2017-06-23 | 湖南吉利汽车部件有限公司 | A kind of methanol vehicle fuel feed system |
| CN106224105A (en) * | 2016-08-29 | 2016-12-14 | 贵州天鼎新能源有限公司 | The control method of a kind of methanol and gasoline dual fuel engine and device |
| CN106837568A (en) * | 2017-01-06 | 2017-06-13 | 浙江吉利控股集团有限公司 | A kind of single oil rail double fuel automatic switching control system |
| CN107842430A (en) * | 2017-08-09 | 2018-03-27 | 浙江吉利新能源商用车有限公司 | It is a kind of for the fuel supplier of vehicle, engine system and vehicle |
| CN108194236A (en) * | 2017-12-29 | 2018-06-22 | 吉利四川商用车有限公司 | Oil supply system and automobile |
| CN108343534B (en) * | 2018-04-09 | 2023-08-18 | 西华大学 | Variable fuel supply system of active control compression ignition engine |
| CN109630291A (en) * | 2018-11-02 | 2019-04-16 | 浙江吉利新能源商用车有限公司 | Dual fuel engine Fuel switching method, apparatus and electronic equipment |
| CN109458262B (en) * | 2019-01-18 | 2024-03-26 | 东莞传动电喷科技有限公司 | Dual-fuel system |
| CN110242413B (en) * | 2019-07-12 | 2024-07-30 | 南京盖驰动力科技有限公司 | Gasoline low-pressure injection and methanol high-pressure injection system for engine air inlet pipe |
| CN111706450A (en) * | 2020-06-29 | 2020-09-25 | 东风商用车有限公司 | Dual-fuel supply system |
| CN111946466B (en) * | 2020-07-06 | 2022-06-21 | 江苏大学 | Methanol pressure regulating system of dual-fuel engine and control method thereof |
| CN113047996A (en) * | 2021-03-31 | 2021-06-29 | 广船国际有限公司 | Methanol fuel dual-fuel supply system |
| CN114320686B (en) * | 2022-01-07 | 2023-04-28 | 中国船舶集团有限公司第七一一研究所 | Marine methanol fuel supply method |
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| CN102182569A (en) * | 2011-04-11 | 2011-09-14 | 姚志文 | Burnable methanol fuel device of electrospray gasoline engine |
| CN202545027U (en) * | 2012-03-23 | 2012-11-21 | 武汉市菱电汽车电子有限责任公司 | Automotive dual-fuel feeder based on single fuel rail and single fuel injector set |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007000878A1 (en) * | 2007-11-12 | 2009-05-14 | Robert Bosch Gmbh | Internal combustion engine that can be operated with different types of liquid fuel |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182569A (en) * | 2011-04-11 | 2011-09-14 | 姚志文 | Burnable methanol fuel device of electrospray gasoline engine |
| CN202545027U (en) * | 2012-03-23 | 2012-11-21 | 武汉市菱电汽车电子有限责任公司 | Automotive dual-fuel feeder based on single fuel rail and single fuel injector set |
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Address after: 430048 Hubei city of Wuhan Province East Lake Jinyinhu street water Road No. 8 Patentee after: WUHAN LINGDIAN AUTOMOBILE ELECTRONIC CONTROL SYSTEMCO., LTD. Address before: 430200 Hubei Province, Wuhan city Jiangxia District Industrial Park. Patentee before: Wuhan Ryoden Automotive Electronics Co., Ltd. |