CN108035813A - A kind of integrated injection system for accurately controlling the instantaneous mixing proportion of double fuel - Google Patents
A kind of integrated injection system for accurately controlling the instantaneous mixing proportion of double fuel Download PDFInfo
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- CN108035813A CN108035813A CN201711215456.XA CN201711215456A CN108035813A CN 108035813 A CN108035813 A CN 108035813A CN 201711215456 A CN201711215456 A CN 201711215456A CN 108035813 A CN108035813 A CN 108035813A
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- Prior art keywords
- fuel
- check valves
- mixing proportion
- accurately controlling
- flow control
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
- F02D19/081—Adjusting the fuel composition or mixing ratio; Transitioning from one fuel to the other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a kind of integrated injection system for accurately controlling the instantaneous mixing proportion of double fuel, it is arranged at the combustion system of engine, including A fuel feed systems, B fuel feed systems, fuel injector and ECU electronic control unit, A fuel feed systems are made of A flow control electromagnetic valves, A filters, A fuel pumps, A fuel tanks and A fuel consumption instrument；B fuel feed systems are made of B flow control electromagnetic valves, B filters, B fuel pumps, B fuel tanks and B fuel consumption instrument, the output terminal of A flow control electromagnetic valves and B flow control electromagnetic valves is connected to A check valves and B check valves, the output terminal of A check valves and B check valves is connected with fuel injector, overflow valve and reserve fuel tank are additionally provided between fuel injector and A check valves and B check valves, lambda sensor, discharge instrument, air flow meter and cooling-water temperature sensor are additionally provided with combustion system.The present invention realizes the flexible blending of different fuel, meets the optimal performance that engine is issued in different operating modes.
Description
Technical field
Present invention design technical field of internal combustion engines, controls, specifically more particularly to the fuel of dual fuel engine
A kind of integrated injection system for accurately controlling the instantaneous mixing proportion of double fuel.
Background technology
With Global Oil resource growing tension, internal combustion engine thermal efficiency is improved, reduces the fuel consumption of engine and becomes and grind
Study carefully the focus of personnel's growing interest.At present, engine thermal efficiency is improved using alternative fuel, it is more to improve engine economy
Effective technical measures.Common double fuel liquid uses the fuel blend of fixed proportion, such as general-utility car to use E10 (gasoline
In the ethanol containing 10% volume fraction) and the E85 (second containing 85% volume fraction inside gasoline for flexible fuel vehicle
Alcohol).But the fuel combination that double fuel premixes under fixed proportion can not fully change using the advantages of each fuel
The performance of kind engine.Experimental study shows, to be issued to optimal engine performance in different operating modes, it is necessary to using different
Mixed proportion.
In order to neatly use the characteristic and advantage of two kinds of fuel, the injection that a kind of intake port injection and in-cylinder direct-jet combine
System is suggested, and there are certain advantage in face of increasingly stringent oil consumption and Abgasgesetz for this mode.But due to two oil spouts
The inherent defect of the problem of device cost and intake port injection is not used widely.
In-cylinder direct-jet technology can more efficiently utilize fuel characteristic at present, by controlling time for spraying, injection pressure
And multi-injection technology forms stratified mixtures or realizes lean burn, so as to expand the engine thermal efficiency limit and drop
Low engine fuel consumption rate.But arrange that two fuel injectors are limited to space and cost problem on combustion chamber, therefore in volume production
It is less susceptible to realize on engine.
The content of the invention
The purpose of the invention is to overcome deficiency of the prior art, there is provided one kind accurately controls double fuel and instantaneously mixes
Two kinds of different fuel are controlled and carried out by the integrated injection system of mixed ratio, the system before fuel injector according to Engine ECU
The fuel blending of different proportion, then high-pressure injection in cylinder is carried out, realize the flexible blending of different fuel, meet under different operating modes
Reach the optimal performance of engine.The present invention can neatly combine high-pressure injection, multi-injection and stratified combustion, lean burn etc.
State of the art can further improve engine thermal efficiency.The present invention has expanded the Engine Limit thermal efficiency and has further carried
High engine economy, Commercial Prospect are preferable.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of integrated injection system for accurately controlling the instantaneous mixing proportion of double fuel, is arranged at the burning system of engine
System, including A fuel feed systems, B fuel feed systems, fuel injector and ECU electronic control unit, the A fuel feed systems are flowed by A
Amount control solenoid valve, A filters, A fuel pumps, A fuel tanks and A fuel consumptions instrument composition；The B fuel feed systems are by B flows
Control solenoid valve, B filters, B fuel pumps, B fuel tanks and B fuel consumptions instrument composition, the A flow control electromagnetic valves and B flows
The output terminal of control solenoid valve is connected to A check valves and B check valves, the output terminal and the spray of A check valves and B check valves
Oily device is connected, and overflow valve and reserve fuel tank are additionally provided between fuel injector and A check valves and B check valves, is also set in combustion system
Oxygen sensor, discharge instrument, air flow meter and cooling-water temperature sensor.
Further, the ECU electronic control unit is according to the load and operating mode real-time judge A fuel of engine and B fuel
The optimal mixing proportion of fuel, fuel feeding is carried out to engine.
Further, the letter that the ECU electronic control unit is received by receiving the signal, air flow meter that lambda sensor is fed back
Number and discharge instrument signal so that air throttle, fuel injector and spark plug are controlled, to realize control to combustion system.
Further, the A fuel includes gasoline and diesel oil.
Further, the B fuel includes methanol and ethanol.
Further, fuel injector is made of electromagnet, armature core, ball valve, spout hole, fuel feed hole, valve rod and spray orifice.
Compared with prior art, beneficial effect caused by technical scheme is：
Present system realizes that two kinds of fuel flexibly match in real time, using the different qualities and advantage of two kinds of fuel, for
Different operating modes carry out the flexible blending of fuel, and optimal performance and discharge are issued in different operating modes；According to the different characteristic of fuel,
The state of the art such as high-pressure injection, multi-injection and stratified combustion, lean burn can neatly be combined can further improve hair
The motivation thermal efficiency, has expanded the extreme thermal efficiency of engine and has improved engine economy.
Brief description of the drawings
Fig. 1 is the application state structure diagram of injection system of the present invention.
Fig. 2 is the structure diagram of fuel injector.
Fig. 3 is the structure diagram for controlling the flow control electromagnetic valve of fuel flow rate.
Fig. 4 is the structure diagram for controlling the check valve of fuel one-way flow and mixing.
Reference numeral：1-A flow control electromagnetic valves, 2-A filters, 3-A fuel pumps, 4-A fuel tanks, 5-A fuel consumption instrument,
6-B flow control electromagnetic valves, 7-B filters, 8-B fuel pumps, 9-B fuel tanks, 10-B fuel consumption instrument, 11-A check valves, 12- overflow
Flow valve, 13- reserve fuel tanks, 14- fuel injectors, 15- lambda sensors, 16- discharge instrument, 17-ECU electronic control unit, 18- air mass flows
Meter, 19- cooling-water temperature sensors, 20-B check valves, 21- electromagnet, 22- armature cores, 23- ball valves, 24 spout holes, 25- fuel feed holes,
26- valve rods, 27- spray orifices
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figures 1 to 4, the present invention protects a kind of integrated oil spout for accurately controlling the instantaneous mixing proportion of double fuel
System, is arranged at the combustion system of engine, including A fuel feed systems, B fuel feed systems, fuel injector 14 and ECU automatically controlled
Unit 17, A fuel feed systems are by A flow control electromagnetic valves 1, A filters 2, A fuel pumps 3, A fuel tanks 4 and A fuel consumptions instrument 5
Composition；B fuel feed systems are by B flow control electromagnetic valves 6, B filters 7, B fuel pumps 8, B fuel tanks 9 and B fuel consumptions instrument 10
The output terminal of composition, A flow control electromagnetic valves 1 and B flow control electromagnetic valves 6 is connected to A check valves 11 and B check valves
The output terminal of 20, A check valves 11 and B check valves 20 is connected with fuel injector 14, between fuel injector 14 and A check valves and B check valves
Overflow valve 12 and reserve fuel tank 13 are additionally provided with, lambda sensor 15, discharge instrument 16, air flow meter 18 are additionally provided with combustion system
With cooling-water temperature sensor 19.
ECU electronic control unit 17 needs the fuel of A fuel and B fuel optimal according to the load and operating mode real-time judge of engine
Mixing proportion, carries out fuel feeding, A fuel is widely used fuel, such as gasoline, diesel oil to engine.B fuel is burning
Or emission performance is better than B fuel, it mainly includes flame propagation velocity, knock limit, burning velocity and fire emission
Etc., such as methanol, ethanol.
In addition, the signal that ECU electronic control unit 17 is received by receiving the signal, air flow meter 18 that lambda sensor 15 is fed back
And discharge the signal that instrument 16 is sent and then air throttle, fuel injector 14, spark plug are controlled, to realize to the combustion system
Control.
A fuel feed systems and B fuel feed systems send control signal, control A fuel pumps 3 by ECU electronic control unit 17
Reach the pressure of fuel injector injection needs with B fuel pumps 8；The different optimal mixing proportions of operating mode are obtained according to Map figures, ECU is automatically controlled
The flow of unit control flow control A flow control electromagnetic valves 1 and B flow control electromagnetic valves 6；Fuel flows through A check valves 11 and B
Check valve 20 is blended.
Fuel injector 14 is by 27 groups of electromagnet 21, armature core 22, ball valve 23, spout hole 24, fuel feed hole 25, valve rod 26 and spray orifice
Into.The external overflow valve 12 of 14 low pressure oil return line of fuel injector and oil return box 13, the fuel combination overflowed by fuel injector 14 is in idling
Cylinder injection burning is carried out through fuel injector 14 under operating mode, engine economy and discharge will not be had an impact.
The present invention is not limited to embodiments described above.The description to embodiment is intended to describe and says above
Bright technical scheme, above-mentioned embodiment is only schematical, is not restricted.This is not being departed from
In the case of invention objective and scope of the claimed protection, those of ordinary skill in the art may be used also under the enlightenment of the present invention
The specific conversion of many forms is made, these are belonged within protection scope of the present invention.
Claims (6)
1. a kind of integrated injection system for accurately controlling the instantaneous mixing proportion of double fuel, is arranged at the burning system of engine
System, it is characterised in that including A fuel feed systems, B fuel feed systems, fuel injector (14) and ECU electronic control unit (17), institute
A fuel feed systems are stated by A flow control electromagnetic valves (1), A filters (2), A fuel pumps (3), A fuel tanks (4) and A fuel consumptions
Instrument (5) forms；The B fuel feed systems are by B flow control electromagnetic valves (6), B filters (7), B fuel pumps (8), B fuel tanks
(9) formed with B fuel consumptions instrument (10), the output terminal point of the A flow control electromagnetic valves (1) and B flow control electromagnetic valves (6)
A check valves (11) and B check valves (20), the output terminal and the fuel injector of A check valves (11) and B check valves (20) are not connected with
(14) it is connected, overflow valve (12) and reserve fuel tank is additionally provided between fuel injector (14) and A check valves (11) and B check valves (20)
(13), lambda sensor (15), discharge instrument (16), air flow meter (18) and cooling-water temperature sensor (19) are additionally provided with combustion system.
2. a kind of integrated injection system for accurately controlling the instantaneous mixing proportion of double fuel according to claim 1, it is special
Sign is, the ECU electronic control unit (17) according to the load and the fuel of operating mode real-time judge A fuel and B fuel of engine most
Excellent mixing proportion, fuel feeding is carried out to engine.
3. a kind of integrated injection system for accurately controlling the instantaneous mixing proportion of double fuel according to claim 1, it is special
Sign is that the ECU electronic control unit (17) is by receiving the signal of lambda sensor (15) feedback, air flow meter (18) receives
Signal and discharge instrument (16) signal so that air throttle, fuel injector (14) and spark plug are controlled, with realize to burn
The control of system.
4. a kind of integrated injection system for accurately controlling the instantaneous mixing proportion of double fuel according to claim 1, it is special
Sign is that the A fuel includes gasoline and diesel oil.
5. a kind of integrated injection system for accurately controlling the instantaneous mixing proportion of double fuel according to claim 1, it is special
Sign is that the B fuel includes methanol and ethanol.
6. a kind of integrated injection system for accurately controlling the instantaneous mixing proportion of double fuel according to claim 1, it is special
Sign is, the fuel injector (14) by electromagnet (21), armature core (22), ball valve (23), spout hole (24), fuel feed hole (25),
Valve rod (26) and spray orifice (27) composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711215456.XA CN108035813A (en) | 2017-11-28 | 2017-11-28 | A kind of integrated injection system for accurately controlling the instantaneous mixing proportion of double fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711215456.XA CN108035813A (en) | 2017-11-28 | 2017-11-28 | A kind of integrated injection system for accurately controlling the instantaneous mixing proportion of double fuel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108035813A true CN108035813A (en) | 2018-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711215456.XA Pending CN108035813A (en) | 2017-11-28 | 2017-11-28 | A kind of integrated injection system for accurately controlling the instantaneous mixing proportion of double fuel |
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| CN (1) | CN108035813A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677592A (en) * | 2020-05-21 | 2020-09-18 | 江苏大学 | Control system and method for single-cylinder diesel engine co-combustion of gaseous methanol fuel |
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|---|---|---|---|---|
| CN1558107A (en) * | 2004-02-12 | 2004-12-29 | 上海交通大学 | Injection system for two kinds of fuel of double fuel pump of diesel engine |
| WO2011092364A1 (en) * | 2010-02-01 | 2011-08-04 | Diaz Escano Jesus Manuel | Internal-combustion engine working with alternative fuels |
| CN102418614A (en) * | 2011-08-13 | 2012-04-18 | 镇江恒驰科技有限公司 | Fuel injection control system of flexible fuel engine |
| CN102733944A (en) * | 2012-07-09 | 2012-10-17 | 湖南大学 | System and method for reducing emissions of nitric oxide and carbon smoke of diesel engine simultaneously |
| CN203547937U (en) * | 2013-10-08 | 2014-04-16 | 赵永胜 | Alcohol and gasoline double-fuel injection and control system for gasoline internal combustion engine |
| CN103982308A (en) * | 2014-05-06 | 2014-08-13 | 南京盖驰动力科技有限公司 | Control system and control method of oil/gas dual-fuel engine in electronic control oil supply |
| CN105114193A (en) * | 2015-07-30 | 2015-12-02 | 太原理工大学 | Fuel feed method of methanol/diesel dual-fuel diesel engine |
| CN105888858A (en) * | 2016-06-27 | 2016-08-24 | 北京工业大学 | Single-nozzle direct injection gas-liquid fuel spark ignition type internal combustion engine and control method thereof |
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2017
- 2017-11-28 CN CN201711215456.XA patent/CN108035813A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558107A (en) * | 2004-02-12 | 2004-12-29 | 上海交通大学 | Injection system for two kinds of fuel of double fuel pump of diesel engine |
| WO2011092364A1 (en) * | 2010-02-01 | 2011-08-04 | Diaz Escano Jesus Manuel | Internal-combustion engine working with alternative fuels |
| CN102418614A (en) * | 2011-08-13 | 2012-04-18 | 镇江恒驰科技有限公司 | Fuel injection control system of flexible fuel engine |
| CN102733944A (en) * | 2012-07-09 | 2012-10-17 | 湖南大学 | System and method for reducing emissions of nitric oxide and carbon smoke of diesel engine simultaneously |
| CN203547937U (en) * | 2013-10-08 | 2014-04-16 | 赵永胜 | Alcohol and gasoline double-fuel injection and control system for gasoline internal combustion engine |
| CN103982308A (en) * | 2014-05-06 | 2014-08-13 | 南京盖驰动力科技有限公司 | Control system and control method of oil/gas dual-fuel engine in electronic control oil supply |
| CN105114193A (en) * | 2015-07-30 | 2015-12-02 | 太原理工大学 | Fuel feed method of methanol/diesel dual-fuel diesel engine |
| CN105888858A (en) * | 2016-06-27 | 2016-08-24 | 北京工业大学 | Single-nozzle direct injection gas-liquid fuel spark ignition type internal combustion engine and control method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677592A (en) * | 2020-05-21 | 2020-09-18 | 江苏大学 | Control system and method for single-cylinder diesel engine co-combustion of gaseous methanol fuel |
| CN111677592B (en) * | 2020-05-21 | 2022-09-13 | 江苏大学 | Control system and method for single-cylinder diesel engine co-combustion of gaseous methanol fuel |
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