EP3292287A1 - Water injection device of an internal combustion engine and method for operating such a water injection device - Google Patents
Water injection device of an internal combustion engine and method for operating such a water injection deviceInfo
- Publication number
- EP3292287A1 EP3292287A1 EP16716874.9A EP16716874A EP3292287A1 EP 3292287 A1 EP3292287 A1 EP 3292287A1 EP 16716874 A EP16716874 A EP 16716874A EP 3292287 A1 EP3292287 A1 EP 3292287A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- heating element
- water tank
- water injection
- internal combustion
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 209
- 238000002347 injection Methods 0.000 title claims abstract description 77
- 239000007924 injection Substances 0.000 title claims abstract description 77
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 60
- 238000010257 thawing Methods 0.000 claims description 20
- 239000000498 cooling water Substances 0.000 claims description 4
- 238000005485 electric heating Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- 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
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B47/00—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines
- F02B47/02—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being water or steam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/022—Adding fuel and water emulsion, water or steam
- F02M25/025—Adding water
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
- F02D41/064—Introducing corrections for particular operating conditions for engine starting or warming up for starting at cold start
Definitions
- the present invention relates to a water injection device of a
- Another aspect of the invention relates to a method of operating such a water injection device.
- the water injection system used to operate water becomes
- Heating element used A disadvantage of this heating element is that the heat is reduced to a small location around the heating element. This can be a non-optimal thawing of the icy components of the
- Water injection system result. Especially if water due a requested water injection is sucked from a partially thawed water tank, it may lead to a loss of contact of the
- Operation of the internal combustion engine can cause.
- the water injection device of an internal combustion engine according to the invention with the features of claim 1 has the advantage that thawing of icy components of the water injection device can be done safely and quickly. Furthermore, the so-called ice cave effect is avoided, which otherwise leads to a significant reduction of
- Internal combustion engine reaches, which comprises a water tank for storing water, at least one water injector, a conveying element for conveying the water, which is connected via a suction and a return line to the water tank, and a first heating element, which is at least partially disposed on the suction line ,
- the first heating element is arranged to thaw water in the water tank and / or in the suction line, which is frozen, in order to thaw the thawed water in the suction line over the
- the water injection device further comprises a second heating element, which is at least partially disposed on the return line.
- Heating element is adapted to additionally heat the thawed by the first heating element water.
- the second heating element is adapted to additionally heat the thawed by the first heating element water.
- Heating element are turned on, even if water, which is located in the return line, is frozen. Thus, the water in the
- Return line are thawed by the waste heat of the second heating element together with the registered in the already thawed water heat.
- the water injection device comprises a delivery line, via which the delivery element is connected to the water injector, and on which a third heating element is at least partially arranged.
- the third heating element may act to assist the first heating element and / or the second heating element.
- the water injection device comprises a fourth
- Heating element which is arranged in the water tank. By providing the fourth heating element, a faster thawing of the iced water tank is achieved.
- the first heating element and / or the second heating element and / or the third heating element and / or the fourth heating element may preferably be formed as a unit.
- the first heating element and / or the second heating element and / or the third heating element and / or the fourth heating element has an electric heating element and / or a
- An electric heating element offers the advantage of easy control.
- a hydraulic heat exchanger can be adapted to the particular space and design requirements, resulting in optimum heat transfer to the frozen water.
- the hydraulic heat exchanger is preferably arranged to use the cooling water of the internal combustion engine for thawing the frozen water. Consequently The heat contained in the cooling water by cooling the engine can be reused.
- the conveyor element is arranged to be operated in a non-optimal operating point of the conveyor element to generate heat.
- a non-optimal operating point is the operating point to understand, in which a part of the electric power in a drive of the
- Conveying element is converted into heat.
- the conveyor element When the conveyor element is designed as a pump, operation of the pump at a lower speed than that at an optimum operating point is desired, so that the generated heat of the conveyor element is transferred to the water.
- the conveying element is furthermore preferably set up, with an active one
- Another aspect of the present invention relates to an internal combustion engine comprising a water injection device according to the invention.
- the advantages obtained in relation to the water injection device according to the invention remain here as well.
- the internal combustion engine is set up to be operated with gasoline and the Otto principle.
- the internal combustion engine is to be understood, in which a combustion of gasoline or gasoline-air mixture takes place by spark ignition in the form of a spark plug. Since in such an internal combustion engine, the ignition by the
- Ignition is precisely predetermined and is improved by the injection of water combustion, by the circulation of thawed by the at least one intended heating element water in the water injection device failsafe operation of the
- the water injection device according to the invention is used in an internal combustion engine with direct injection and turbocharging.
- the present invention relates to a method for operating a water injection device with at least one water injector, and a conveying element for conveying the water, which is connected via a suction line and a return line to a water tank.
- a method for operating a water injection device with at least one water injector, and a conveying element for conveying the water which is connected via a suction line and a return line to a water tank.
- the inventive method is in the water tank and / or in the
- Suction line located water which is frozen, thawed by a first heating element.
- the thawed water in the intake is conveyed according to the invention via the return line back into the water tank of the water injection device.
- the conveyor element is operated at a non-optimal operating point of the conveyor element to generate heat.
- the conveying element is operated during an active water injection during the thawing process so that a minimum amount of thawed water remains in the water tank.
- Figure 1 is a greatly simplified schematic view of a
- Figure 2 is a simplified schematic view of
- Figure 3 is a simplified schematic view of
- Figure 4 is a simplified schematic view of
- Figure 5 is a simplified schematic view of
- Water injection device 1 of an internal combustion engine 2 according to a first embodiment of the present invention described in detail.
- the internal combustion engine 2 is operated according to the Otto principle and with gasoline direct injection.
- the internal combustion engine 2 which has a plurality of cylinders, and a part of the water injection device 1 according to the invention is shown schematically.
- the internal combustion engine 2 comprises per cylinder a combustion chamber 20 in which a piston 21 is movable back and forth. Furthermore, the internal combustion engine 2 preferably has two inlet valves 25 per cylinder, each having an inlet channel 22, via which air is supplied to the combustion chamber 20. Exhaust gas is removed via an exhaust duct 23. For this purpose, an exhaust valve 26 is arranged on the exhaust duct 23.
- the reference numeral 24 also designates a fuel injection valve.
- a water injector 6 is further arranged, which via a control unit 10 water in the inlet channel 22 of the
- Internal combustion engine 2 injects.
- two water injectors 6 per cylinder are provided, which can be injected for better treatment or to increase the maximum per combustion cycle
- Amount of water leads.
- a water injector per cylinder may be arranged.
- the water injection device 1 comprises a pump designed as Conveying element 3 and an electric drive 4 for driving the pump. Furthermore, a water tank 5 is provided which by a
- Suction line 7 is connected to the conveying element 3.
- a conveying line 8 connects the conveying element 3 with a distributor 9 or a rail, to which a plurality of water injectors 6 is connected.
- an air conditioner is preferably used, including the
- Water injection device 1 has a supply line 1 1.
- deionized water can be conveyed into the water tank 5 via a refill line 1 2.
- a refill line 1 may optionally be provided a sieve.
- a pre-filter 16 in the first line 7 and a fine filter 17 are arranged in the delivery line 8, which can be optionally heated.
- control unit 1 which is preferably designed as the control unit of the internal combustion engine 2, a water injection under normal
- a pressure regulator 15 is arranged in the form of a diaphragm in a return line 13, which connects the delivery line 8 with the water tank 5.
- a check valve can be used as the pressure regulator 15.
- a pressure sensor 14 is further provided in the delivery line 8.
- the water injection device 1 is used at temperatures below the freezing point of the water of the water injection device 1, it may lead to icing of the water tank 5 and / or the suction line 7.
- This area of the water injection device 1 may be sensitive, even if the internal combustion engine 1 is in operation, since this area may be removed from the combustion chamber 22.
- a temperature or level sensor 1 8 can be used.
- a first heating element 19a is arranged in the suction line 7. The first heating element 19 a is arranged to thaw the water which is frozen in the water tank 5 and / or in the suction line 7 and which is frozen.
- the conveying element 3 is further configured to convey the thawed water in the suction line 7 and / or the water tank 5 via the return line 13 back into the water tank 5.
- the first heater element 19a may be used as an electric heater element such as a heater. an electrical resistance and / or be designed as a hydraulic heat exchanger.
- the hydraulic heat exchanger may be configured to use cooling water of the internal combustion engine 2 for thawing the frozen water.
- the conveyor element 3 will be in still inactive water injection, i. with closed water injectors 6, turned on.
- the thawed water is then supplied via the return line 13 via the pressure regulator 15 to the water tank 5.
- Circulation processes increases. This results in a very fast thawing of the frozen water.
- the conveying element 3 can be operated at a non-optimal operating point.
- the conveying element 3 can be operated deliberately in a rotational speed range in which the heat losses of the conveying element 3 increase. This means that the efficiency of the conveyor element 3 on the not optimal operating point is not maximum. This leads to another
- Heating of the circulating water which facilitates the thawing of the still frozen water. Will be optimized due to the driving conditions during this
- Water injection amount is smaller than a minimum water injection amount, which is needed for the combustion, the performance of the
- Water injection quantity can be avoided.
- the generated heat is optimally distributed in the water tank 5.
- thawing of the frozen water in the water tank 5 as well as in the suction line 7 can take place faster via the water injection device 1 according to the invention.
- the water injection device 1 is thus ready earlier.
- Water injection device 1 according to a second embodiment ( Figure 3) further comprise a second heating element 19b.
- Heating element 19b is arranged on the return line 13. Thus, the already thawed water during its circulation can be further heated to introduce more heat in the water tank 5.
- the second heating element 19b may also help when the
- Return line 13 is completely or partially iced.
- FIG. 4 shows a third embodiment of the present invention.
- the third embodiment differs from the second embodiment basically in that a third heating element 19c is arranged in the conveying line 8.
- a third heating element 19c is arranged in the conveying line 8.
- the third heating element 19c is arranged in front of the return line 13 in the conveying direction of the water.
- the water injection device 1 according to a fourth exemplary embodiment of the present invention has a fourth heating element 19d.
- the fourth heating element 19d is disposed within the water tank 5, on. By providing a fourth heating element, the frozen water in the water tank 5 can be thawed faster. Thus, the
- the heating elements 19a, 19b, 19c and 19d can form a heating unit.
- the heating elements 19a, 19b, 19c and 19d are designed as hydraulic heat exchangers, the transfer of the heat to the water in a unit cycle can take place.
- heating elements 19a, 19b, 19c and 19d can also serve as the heating of the heated filter elements 16 and 17.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015208480.9A DE102015208480A1 (en) | 2015-05-07 | 2015-05-07 | Water injection device of an internal combustion engine and method for operating such a water injection device |
PCT/EP2016/058502 WO2016177557A1 (en) | 2015-05-07 | 2016-04-18 | Water injection device of an internal combustion engine and method for operating such a water injection device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3292287A1 true EP3292287A1 (en) | 2018-03-14 |
EP3292287B1 EP3292287B1 (en) | 2021-06-09 |
Family
ID=55755599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16716874.9A Active EP3292287B1 (en) | 2015-05-07 | 2016-04-18 | Water injection device of an internal combustion engine and method for operating such a water injection device |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3292287B1 (en) |
CN (1) | CN107624145B (en) |
DE (1) | DE102015208480A1 (en) |
WO (1) | WO2016177557A1 (en) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016218174A1 (en) | 2016-09-21 | 2018-03-22 | Bayerische Motoren Werke Aktiengesellschaft | Vehicle container system for a resource to be treated for biological contamination |
DE102017206251B3 (en) * | 2017-04-11 | 2018-05-17 | Bayerische Motoren Werke Aktiengesellschaft | Water tank device for an internal combustion engine with water injection |
DE102017212057A1 (en) * | 2017-07-13 | 2019-01-17 | Bayerische Motoren Werke Aktiengesellschaft | Process for the treatment of water in a motor vehicle |
DE102017215214B4 (en) * | 2017-08-31 | 2024-04-11 | Vitesco Technologies Germany Gmbh | Device for determining a fluid level and a quality of a fluid |
DE102017216619A1 (en) * | 2017-09-20 | 2019-03-21 | Robert Bosch Gmbh | Water injection device for an internal combustion engine, motor vehicle and method for water injection |
DE102017216627A1 (en) * | 2017-09-20 | 2019-03-21 | Robert Bosch Gmbh | Water injection device for an internal combustion engine, motor vehicle and method for water injection |
DE102017218385A1 (en) * | 2017-10-13 | 2019-04-18 | Bayerische Motoren Werke Aktiengesellschaft | Removal device for a liquid operating means of a motor vehicle from a container |
DE102018200091A1 (en) * | 2018-01-04 | 2019-07-04 | Robert Bosch Gmbh | Water injection device for an internal combustion engine and method for water injection |
DE102018208001A1 (en) * | 2018-05-22 | 2019-11-28 | Robert Bosch Gmbh | Coolant conveyor for a cooling system of an internal combustion engine, in particular of a motor vehicle, cooling system and internal combustion engine |
DE102018208012A1 (en) * | 2018-05-22 | 2019-11-28 | Robert Bosch Gmbh | Water injection system for internal combustion engines with a non-return valve |
DE102018208901A1 (en) * | 2018-06-06 | 2019-12-12 | Robert Bosch Gmbh | Water injection device for an internal combustion engine |
EP3581783A1 (en) * | 2018-06-11 | 2019-12-18 | Robert Bosch GmbH | Water injection device for a combustion engine and method for water injection |
DE102018210769A1 (en) * | 2018-06-29 | 2020-01-02 | Bayerische Motoren Werke Aktiengesellschaft | Water injection device of a vehicle internal combustion engine |
DE102018218749A1 (en) * | 2018-11-02 | 2020-05-07 | Robert Bosch Gmbh | Water injection device for an internal combustion engine |
DE102018219205A1 (en) * | 2018-11-12 | 2020-05-14 | Robert Bosch Gmbh | Injection system for an internal combustion engine, method for operating an injection system |
DE102018222508A1 (en) | 2018-12-20 | 2020-06-25 | Audi Ag | Method for operating a drive device and corresponding drive device |
DE102019112565B4 (en) * | 2019-05-14 | 2021-08-19 | Bayerische Motoren Werke Aktiengesellschaft | Vehicle with water injection system |
DE102019113499A1 (en) * | 2019-05-21 | 2020-11-26 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Method of operating a water injection device and water injection device |
DE102019214766B4 (en) | 2019-09-26 | 2021-11-04 | Vitesco Technologies GmbH | Method and device for determining the icing condition of a component of the exhaust tract of a motor vehicle that is not arranged directly in the exhaust gas mass flow |
DE102020207469A1 (en) | 2020-06-17 | 2021-12-23 | Volkswagen Aktiengesellschaft | Motor vehicle with water injection system and method for operating a motor vehicle with water injection system |
DE102021100968A1 (en) | 2021-01-19 | 2022-07-21 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Internal combustion engine and vehicle with internal combustion engine |
DE102021100966A1 (en) | 2021-01-19 | 2022-07-21 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Internal combustion engine, vehicle and method of operating an internal combustion engine |
DE102021100971A1 (en) | 2021-01-19 | 2022-07-21 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Internal combustion engine, vehicle and method of operating an internal combustion engine |
CN115217675B (en) * | 2022-03-01 | 2024-03-08 | 广州汽车集团股份有限公司 | Engine water spraying system, control method of engine water spraying system and automobile |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI115992B (en) * | 2002-04-19 | 2005-08-31 | Marioff Corp Oy | Method and apparatus for controlling the spraying apparatus |
US20100064670A1 (en) * | 2005-06-22 | 2010-03-18 | Eichenauer Heizelemente Gmbh & Co. Kg | Reductant Supply System for a Waste Gas Cleaning Catalyst and a Heating Unit Therefor |
DE102009014795A1 (en) * | 2009-03-25 | 2010-09-30 | Daimler Ag | Water injection system operating method for internal combustion engine of passenger car, involves introducing water into combustion chamber, and operating water injection system in winter operation mode at cold ambient temperature |
US20120020857A1 (en) * | 2010-07-21 | 2012-01-26 | Isada Raymond Upano | Dosing system having recirculation heating and vacuum draining |
WO2014080266A1 (en) | 2012-11-20 | 2014-05-30 | Nostrum Energy Pte. Ltd. | Internally cooled exhaust gas recirculation system for internal combustion engine and method thereof |
-
2015
- 2015-05-07 DE DE102015208480.9A patent/DE102015208480A1/en not_active Withdrawn
-
2016
- 2016-04-18 EP EP16716874.9A patent/EP3292287B1/en active Active
- 2016-04-18 WO PCT/EP2016/058502 patent/WO2016177557A1/en active Application Filing
- 2016-04-18 CN CN201680026618.2A patent/CN107624145B/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN107624145A (en) | 2018-01-23 |
WO2016177557A1 (en) | 2016-11-10 |
EP3292287B1 (en) | 2021-06-09 |
DE102015208480A1 (en) | 2016-11-10 |
CN107624145B (en) | 2020-05-05 |
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