CN104612840A - Method used for operating DME internal combustion engine of diesel fuel and motor vehicle - Google Patents
Method used for operating DME internal combustion engine of diesel fuel and motor vehicle Download PDFInfo
- Publication number
- CN104612840A CN104612840A CN201410612282.0A CN201410612282A CN104612840A CN 104612840 A CN104612840 A CN 104612840A CN 201410612282 A CN201410612282 A CN 201410612282A CN 104612840 A CN104612840 A CN 104612840A
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- China
- Prior art keywords
- fuel
- dme
- explosive motor
- diesel fuel
- cylinder
- Prior art date
- 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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- 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
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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
- F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
- F02D17/02—Cutting-out
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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
- F02D19/0639—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 characterised by the type of fuels
- F02D19/0642—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 characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions
- F02D19/0647—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 characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions the gaseous fuel being liquefied petroleum gas [LPG], liquefied natural gas [LNG], compressed natural gas [CNG] or dimethyl ether [DME]
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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
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/008—Controlling each cylinder individually
- F02D41/0087—Selective cylinder activation, i.e. partial cylinder operation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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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)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention relates to a method for operating an internal combustion engine of DME diesel fuel of diesel fuel for fuel and relates to a motor vehicle with the internal combustion engine. If operation of diesel fuel for the internal combustion engine is carried out, only some cylinders of the internal combustion engine supply fuel, and the other cylinders are closed.
Description
Technical field
The present invention relates to a kind of is the method for the explosive motor of the DME replacement DME of burning diesel oil for operational design, and relates to a kind of motor vehicle with DME explosive motor.
Background technique
DME (dimethyl ether) is second generation biodiesel, can be similar to the mode process DME of the liquid petrochemical industry oil gas for spark ignition engine, but with the cetane number between 55 to 60, it is best suited for diesel engine.DME can produce from living beings, and then except the technique for the manufacture of it DME be CO
2-neutral.By means of its Small molecular size, DME very undisturbedly burns and the most important thing is to have low-level pollutant in motor.In order to the conventional diesel of the DME of the calorific value by the half only with petrochemical diesel fuel can be operated, be necessary that and correspondingly revise the pressurized tank that oil nozzle and engine control software and needs have correspondingly larger volume.
For the foregoing reasons, DME has proved the alternative fuel of attractive petrochemical diesel fuel.But DME fuel can not be available anywhere.Therefore, where necessary, the DME explosive motor by petrochemical diesel fuel can preferably also be operated.Because the physical property of DME and petrochemical diesel fuel is too not different, so this is not impossible substantially.This can expect amendment engine control software, and if necessary, also revise oil nozzle by this way: if can not refuel with DME by chance, then at least emergency mode petrochemical diesel fuel is possible.But, at explosive motor---its configuration only may be affected for diesel fuel and efficiency, namely the specified rate of diesel fuel may provide the mechanical output lower than pure diesel engine---when, when same low-level pollutant, burn diesel fuel will be impossible.On the contrary, will trend towards producing more heat energy relative to mechanical output, and which not only reduces efficiency and HD can be placed on the cooling system.
Summary of the invention
The present invention is based on operational design can be the explosive motor of the DME fuel replacement DME fuel of burning diesel fuel and need not accept the object of above-mentioned shortcoming.
This object according to the present invention by having the method for following technical characteristics and motor vehicle and realization.
Advantageous developments of the present invention describes in detail in following technological scheme.
According to the present invention, if explosive motor diesel fuel operates, then only have some cylinders supply fuel of explosive motor, and other be closed.
That is, possibility is become with the operation of diesel fuel mainly through cylinder closedown.Cylinder closedown itself is known, and allows the fuel consumption of many multi-cylinder internal combustion engine to reduce.In order to this object, when low-power requirements, be interrupted to the cylinder group fuel supply that can be made up of one or more cylinder.In addition, air supply can be interrupted, and such as, by the valve of inactive closedown cylinder, to avoid gas exchange loss, but also has other solutions for this situation.
In the present invention, cylinder close preferably not only occur when relatively low power demand but also when relatively high power demand, wherein this relatively high power demand be greater than traditional cylinder closedown will terminate and all cylinders by power demand when being lighted.That is, in the present invention explosive motor in cylinder " shut " mode" than when traditional cylinder is closed frequently, preferably even continuous.
But, can provide and allow multiple cylinder or all cylinders to light when very high power demand.Also the quantity in succession increasing the cylinder lighted when power demand increases can be expected.
Such as, if explosive motor has four cylinders, then, when explosive motor operates with diesel fuel, preferably two or three cylinders do not supply fuel.This is corresponding well compared with diesel combustion, relatively low calorific value and the relative low jet pressure of the DME when DME burns.---when it burns for DME must than for large during diesel combustion---therefore can inject the diesel fuel of about identical amount when burning with the DME for each given power demand to light the oil nozzle of cylinder.That is, with the DME pattern of given identical power demand the fuel (according to volume or weight, having corresponding high calorific value) of the about identical amount be fed each circulation can be fed to the cylinder of each supply diesel fuel.Like this, the cylinder lighted can trend towards running when the pollutant of low emission and level of efficiency good in loading range.
Even if be designed to the explosive motor diesel fuel replacement DME operating fuel of burning DME fuel, this also allows to meet the emissions standard being applicable to diesel engine.Therefore being possible with diesel fuel operation, not being as just pure emergent---then it must be terminated as quickly as possible, but it is significantly longer to continue than emergent permission.Just must be contemplated that smooth running poor a little.
If explosive motor DME fuel handling, then preferably all cylinders of explosive motor are supplied to fuel, but, during DME pattern, also will may perform cylinder and close.But this can close more Zao end than the cylinder in diesel fuel mode, and that is, it only occurs during relatively low power demand.
Embodiment
Being described below of exemplary embodiment.
Four-cylinder motor vehicle diesel engine design is burning DME fuel, if wherein injection valve is with---properly---jet pump exchanges the analog with relative large shot, and engine control software carries out suitable amendment.Motor is arranged in the motor vehicle with the tank being suitable for DME fuel.
Explosive motor also can operate with traditional diesel fuel, and traditional diesel fuel can be arranged in such as independent tank.But also by it is conceivable that diesel fuel in can being filled into the tank being applicable to DME fuel, that to be tank be prerequisite is empty with no pressure.
In the operating process using conventional diesel fuel, only has one or two cylinder supply diesel fuel of explosive motor, other then closedown, if because their fuel supplies and---properly---air supply is interrupted.Consider the identical power demand of explosive motor, each cylinder of lighting receives the fuel with about identical amount during with DME fuel handling, fresh air but more, and correspondingly provide more power, so that the total output of explosive motor keeps roughly the same.If require to can be used for the more power of the power of answering than the current cylinder lighted, be so supplied to diesel fuel more than a cylinder or two cylinders.
Claims (7)
1. one kind replaces the method for the explosive motor of DME fuel for the operational design DME fuel that is burning diesel fuel, it is characterized in that, if explosive motor diesel fuel operates, only have some cylinders supply fuel of explosive motor, and other be closed.
2. method according to claim 1, it is characterized in that, if explosive motor has four cylinders, then when explosive motor is using diesel fuel to operate, two or three cylinders do not supply fuel, and if explosive motor has more than four cylinders, then, when internal-combustion engine is using diesel fuel to operate, correspondingly multiple cylinder does not supply fuel.
3. method according to claim 1 and 2, is characterized in that, with in the DME pattern with equal-wattage demand, the fuel of the about identical amount be fed is fed to each cylinder being supplied to diesel fuel in each circulation.
4. the method according to any one in aforementioned claim, it is characterized in that, wherein with the whole time durations of diesel fuel operation, otherwise at least close than traditional cylinder by the end of the large power demand of power demand during, explosive motor cylinder closing operation.
5. the method according to any one in aforementioned claim, it is characterized in that, if explosive motor DME fuel handling, then or all cylinders of explosive motor supply fuel all continuously, otherwise cylinder close and only occur during relatively low power demand.
6. have DME explosive motor and be configured for the motor vehicle of ejecting system of DME fuel, switching explosive motor to being possible with diesel fuel operation, it is characterized in that, explosive motor is designed to operate with cylinder cut out in diesel fuel mode.
7. motor vehicle according to claim 6, is characterized in that, motor vehicle are designed to perform as the method in Claims 1-4 as described in any one.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013222292.0.9 | 2013-11-04 | ||
| DE102013222292 | 2013-11-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104612840A true CN104612840A (en) | 2015-05-13 |
Family
ID=52829911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410612282.0A Pending CN104612840A (en) | 2013-11-04 | 2014-11-04 | Method used for operating DME internal combustion engine of diesel fuel and motor vehicle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104612840A (en) |
| DE (1) | DE102014218739B4 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017208176A1 (en) * | 2017-05-15 | 2018-11-15 | Man Diesel & Turbo Se | Method of operating a dual-fuel engine and dual-fuel engine |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4064844A (en) * | 1975-09-17 | 1977-12-27 | Nissan Motor Co., Ltd. | Apparatus and method for successively inactivating the cylinders of an electronically fuel-injected internal combustion engine in response to sensed engine load |
| JPS57153933A (en) * | 1981-03-16 | 1982-09-22 | Kubota Ltd | Stop device of two-channel fuel engine |
| RU2108472C1 (en) * | 1996-07-16 | 1998-04-10 | Акционерное общество закрытого типа "Зил-КАР" | Dump truck diesel engine operation method |
| CN1447019A (en) * | 2003-05-14 | 2003-10-08 | 西安交通大学 | Low-pressure fuel feed system for dimethyl ether and diesel oil being as fuel of engine |
| CN1497154A (en) * | 2002-10-16 | 2004-05-19 | 株式会社小松制作所 | Diesel motor |
| CN1675083A (en) * | 2002-06-12 | 2005-09-28 | 特克萨科双向氢***有限责任公司 | Method and system for hydrogen powered internal combustion engine |
| CN101787932A (en) * | 2009-01-26 | 2010-07-28 | 福特环球技术公司 | Engine control and system in response to different pure content in the fuel |
| CN102042095A (en) * | 2009-10-12 | 2011-05-04 | 张昌盛 | Method for saving energy by flexibly changing displacement of internal-combustion engine and electronic control unit |
| CN102162400A (en) * | 2010-02-22 | 2011-08-24 | 张京涛 | Closing cylinder oil-saving engine capable of forming vacuum spring in cylinder of internal-combustion engine |
| CN102192035A (en) * | 2010-03-10 | 2011-09-21 | 通用汽车环球科技运作有限责任公司 | Fuel management system and method for variable displacement engine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10042490A1 (en) | 1999-09-07 | 2001-03-29 | Volkswagen Ag | Controlling internal combustion engine by detecting composition of fuel and controlling engine system accordingly |
| DE102005040551B4 (en) | 2005-08-26 | 2009-01-29 | Continental Automotive Gmbh | Method for determining a proportion of biodiesel in the fuel of a diesel internal combustion engine |
| US7539562B2 (en) | 2006-03-06 | 2009-05-26 | Gm Global Technology Operations, Inc. | Hybrid vehicle powertrain control method and apparatus |
-
2014
- 2014-09-18 DE DE102014218739.7A patent/DE102014218739B4/en active Active
- 2014-11-04 CN CN201410612282.0A patent/CN104612840A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4064844A (en) * | 1975-09-17 | 1977-12-27 | Nissan Motor Co., Ltd. | Apparatus and method for successively inactivating the cylinders of an electronically fuel-injected internal combustion engine in response to sensed engine load |
| JPS57153933A (en) * | 1981-03-16 | 1982-09-22 | Kubota Ltd | Stop device of two-channel fuel engine |
| RU2108472C1 (en) * | 1996-07-16 | 1998-04-10 | Акционерное общество закрытого типа "Зил-КАР" | Dump truck diesel engine operation method |
| CN1675083A (en) * | 2002-06-12 | 2005-09-28 | 特克萨科双向氢***有限责任公司 | Method and system for hydrogen powered internal combustion engine |
| CN1497154A (en) * | 2002-10-16 | 2004-05-19 | 株式会社小松制作所 | Diesel motor |
| CN1447019A (en) * | 2003-05-14 | 2003-10-08 | 西安交通大学 | Low-pressure fuel feed system for dimethyl ether and diesel oil being as fuel of engine |
| CN101787932A (en) * | 2009-01-26 | 2010-07-28 | 福特环球技术公司 | Engine control and system in response to different pure content in the fuel |
| CN102042095A (en) * | 2009-10-12 | 2011-05-04 | 张昌盛 | Method for saving energy by flexibly changing displacement of internal-combustion engine and electronic control unit |
| CN102162400A (en) * | 2010-02-22 | 2011-08-24 | 张京涛 | Closing cylinder oil-saving engine capable of forming vacuum spring in cylinder of internal-combustion engine |
| CN102192035A (en) * | 2010-03-10 | 2011-09-21 | 通用汽车环球科技运作有限责任公司 | Fuel management system and method for variable displacement engine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102014218739B4 (en) | 2019-07-04 |
| DE102014218739A1 (en) | 2015-05-07 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150513 |
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| RJ01 | Rejection of invention patent application after publication |