CN103321760A - Method for operating internal combustion engine with reciprocating piston - Google Patents

Method for operating internal combustion engine with reciprocating piston Download PDF

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Publication number
CN103321760A
CN103321760A CN2013100898250A CN201310089825A CN103321760A CN 103321760 A CN103321760 A CN 103321760A CN 2013100898250 A CN2013100898250 A CN 2013100898250A CN 201310089825 A CN201310089825 A CN 201310089825A CN 103321760 A CN103321760 A CN 103321760A
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China
Prior art keywords
firing chamber
combustion
dead center
additive fluid
injected
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Granted
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CN2013100898250A
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Chinese (zh)
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CN103321760B (en
Inventor
G.多姆贝格尔
P.亨申
I.维尔克
S.孔克尔
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MAN Energy Solutions SE
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MAN Diesel and Turbo SE
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    • 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
    • F02M25/0221—Details of the water supply system, e.g. pumps or arrangement of valves
    • F02M25/0225—Water atomisers or mixers, e.g. using ultrasonic waves
    • 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
    • F02D41/3094—Controlling fuel injection the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the cylinder
    • 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
    • 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
    • F02D19/02—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 gaseous fuels
    • F02D19/021—Control of components of the fuel supply system
    • F02D19/023—Control of components of the fuel supply system to adjust the fuel mass or volume flow
    • F02D19/024—Control of components of the fuel supply system to adjust the fuel mass or volume flow by controlling fuel injectors
    • 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
    • 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
    • F02D19/10—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 peculiar to compression-ignition engines in which the main fuel is gaseous
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
    • F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
    • F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of 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
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
    • F02D41/402—Multiple injections
    • F02D41/405—Multiple injections with post injections
    • 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
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • 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
    • F02M25/03—Adding water into the cylinder or the pre-combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
    • F01N2430/04—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by adding non-fuel substances to combustion air or fuel, e.g. additives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • 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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/14—Direct injection into combustion chamber
    • 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
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0618—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston having in-cylinder means to influence the charge motion
    • F02B23/0621—Squish flow
    • 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
    • Y02T10/12—Improving ICE efficiencies

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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)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

The invention provides a method for operating an internal combustion engine (1) with a reciprocating piston. The internal combustion engine (1) with a reciprocating piston is provided with at least one combustion cylinder (10), and the reciprocating piston (20) which can move between an upper stop point (OT) and a lower stop point (UT) is accommodated in the combustion cylinder. The method comprises the steps as follows: fuel and combustion air are introduced to the combustion chamber (13) of the combustion cylinder, the power stroke of the reciprocating piston is achieved through the combustion of the fuel and the combustion air, additional fluid (ZF) is introduced to the combustion chamber, and the combustion is influenced by the ZF. To achieve best combustion in the combustion chamber, the ZF is directly injected to the combustion chamber separated from the combustion air and the fuel.

Description

The method that is used for the operating stroke piston internal-combustion engine
Technical field
The present invention relates to a kind of by the preamble of claim 1 method designed, that be used for the operating stroke piston internal-combustion engine, this reciprocating IC engine has at least one combustion cylinder, is holding the reciprocating piston that can move between top dead center and lower dead center point-blank in this combustion cylinder.
Background technique
The method that starts described type is for example open from DE 10 2,006 054 227 A1.
Summary of the invention
Task of the present invention is, proposes a kind of method as described in the preamble according to claim 1, thereby can be implemented in the burning of the optimization in the firing chamber of combustion cylinder.
This task utilizes method according to claim 1 to realize.Improvement project of the present invention limits in the dependent claims.
According to the present invention, a kind of method for the operating stroke piston internal-combustion engine is proposed, this reciprocating IC engine has at least one combustion cylinder, in this combustion cylinder, holding the reciprocating piston that can between top dead center and lower dead center, move point-blank, wherein, this method has following steps: fuel and combustion-supporting air are incorporated in the firing chamber of combustion cylinder, realize the expansion stroke of reciprocating piston in order to the burning by described fuel and combustion-supporting air; And the additive fluid that will preferably be different from fuel and combustion-supporting air is incorporated in the firing chamber, influences described burning in order to utilize this additive fluid.The characteristics of the method according to this invention are, additive fluid and fuel and combustion-supporting air directly are injected in the firing chamber dividually.
Because this additive fluid and fuel and combustion-supporting air directly are injected in the firing chamber dividually, its process in the firing chamber of being presented to can be independent of combustion process and/or be controlled by the ignition time point ground of fuel and the formed mixture of combustion-supporting air, and the influence to burning that therefore realizes with need is best mated.
Utilize the method according to this invention can be before by fuel and the formed mixture burns of combustion-supporting air, during and/or afterwards additive fluid directly is injected into or is injected in the firing chamber.Can realize influencing neatly the burning in the firing chamber of described combustion cylinder thus, and therefore can be so that burning realizes better optimize.
According to one embodiment of the present invention, when reciprocating piston is positioned near the lower dead center (UT), additive fluid is injected in the firing chamber.Preferably when reciprocating piston is arranged in lower dead center, additive fluid is injected in the firing chamber.
According to another embodiment of the invention, selection is set directly at a top dead center (OT) lower dead center before and is used as for the lower dead center that additive fluid is injected to the firing chamber, wherein, described top dead center is set directly at before the expansion stroke of reciprocating piston, that is to say, select to be set directly in the compression stroke of reciprocating piston and igniting top dead center (ZOT) lower dead center before between the expansion stroke.
According to another embodiment of the invention, water is injected in the firing chamber as additive fluid.
Utilize this water directly to inject the discharge of poisonous waste that (Water Direct Injection-WDI) can reduce described reciprocating IC engine, and realize that power raises and pinking minimizes.Be under the situation of additive fluid of form injecting or spraying into water in the lower dead center before described igniting top dead center, can improve the efficient of described burning by the cooling of the evaporation of water after the compression.
According to another embodiment of the invention, the gas that is difficult for lighting acted as a fuel to be incorporated in the firing chamber, wherein, the gas of easily lighting is injected in the firing chamber as additive fluid.
According to this design proposal according to method of the present invention, spray into the flammable incendive gas of easily lighting in other words preferably in other words by additional, that can optimize flammable difference is difficult for the burning of gas lighted in other words.
According to one embodiment of the present invention, be injected in the firing chamber additive fluid is following, make its with enter into the firing chamber, be used for lighting some kerosene beam or pre-burning naked light overlaid by fuel and the formed mixture of combustion-supporting air.
According to a kind of design proposal according to method of the present invention, the injection of additive fluid or spray into the combustibility that can for example be supported to improve in other words described mixture by local enriching by fuel and the formed mixture of combustion-supporting air.
According to another embodiment of the invention, additive fluid is injected to targetedly at least one crush zone (Quetschzone) of firing chamber.
(for example the piston body place of reciprocating piston) crush zone or extruding margin are used for for example making by fuel and the formed mixture of combustion-supporting air and eddy in the firing chamber.Crush zone is a kind of like this zone, because reciprocating piston near the cylinder head of combustion cylinder, the extruding of described mixture will occur, can make this area part ground thus or fully get rid of burning in this zone.
Targetedly additive fluid is injected into certain firing chamber, such as in the preferred crush zone, just realized better conversion ratio by increasing described effective firing chamber, and therefore realized the better efficient of burning or reciprocating IC engine, and produced the extra loading movement in the firing chamber, and therefore reduced the hydrocarbon that produces as waste gas.
According to another embodiment of the invention, the gas that is difficult for lighting is being injected in the firing chamber by during the lighting of fuel (preferred fuel high-quality and that easily light) and the formed mixture of combustion-supporting air as additive fluid.
Therefore, according to this design proposal according to method of the present invention, can inject or spray into inferior fuel targetedly, this can help to reduce the operating cost of reciprocating IC engine.
According to another embodiment of the invention, selection is set directly at top dead center lower dead center afterwards as the lower dead center that is used for additive fluid is injected to the firing chamber, wherein, this top dead center is set directly at before the expansion stroke of reciprocating piston, that is to say, select to be set directly at igniting top dead center lower dead center afterwards.At this, preferably exhaust after-treatment agent, preferred ammonia are injected in the firing chamber as additive fluid.
According to this design proposal according to method of the present invention, can cancel optionally catalytic reduction-Selektive Katalytische Reduktion of SCR()-catalyzer, it can be used for the nitrogen oxides from exhaust gas of the described reciprocating IC engine of reduction, and/or the mixing section before the cancellation SCR-catalyzer.This is also effective for other forms by means of the exhaust after-treatment of additives.
The present invention also extends to a kind of like this mode of execution clearly, and it does not provide by the feature combination that is formed by tangible claim adduction relationship, and therefore disclosed feature of the present invention can at random make up mutually, as long as it is useful technically.
Description of drawings
Below by means of preferred embodiment and with reference to the accompanying drawings describing the present invention in detail.
Fig. 1 shows the longitudinal cross-section view of the combustion cylinder of reciprocating IC engine;
Fig. 2 shows the viewgraph of cross-section of the combustion cylinder of Fig. 1 that the straight line A-A in Fig. 1 observes.
Reference numerals list:
1 reciprocating IC engine;
10 combustion cylinders;
11 cylinder heads;
12 fuel-combustion-supporting air-feeding mechanism;
13 firing chambers;
13.1 crush zone;
14 additive fluid feeders;
20 reciprocating pistons;
20.1 be arranged in the reciprocating piston of top dead center;
20.2 be arranged in the reciprocating piston of lower dead center;
The ZF additive fluid;
The OT top dead center;
The UT lower dead center.
Embodiment
As visible from Fig. 1 and Fig. 2, reciprocating IC engine 1(according to the present invention is not completely shown) for example can be designed to the 2-stroke procedure or with diesel engine or the petrol engine of 4-stroke procedure work, it has at least one combustion cylinder 10, in this combustion cylinder, hold can be point-blank at top dead center OT(extraly with the reciprocating piston of 20.1 marks) and lower dead center UT(with the reciprocating piston of 20.2 marks) between the reciprocating piston 20 of motion.
This combustion cylinder 10 has cylinder head 11, holds fuel-combustion-supporting air-feeding mechanism 12 in this cylinder head, fuel and combustion-supporting air can be incorporated in the firing chamber 13 of combustion cylinder 10 by this fuel-combustion-supporting air-feeding mechanism.
This fuel-combustion-supporting air-feeding mechanism 12 can for example have a fuel nozzle and one or more air inlet valve.
In addition, in the cylinder head 11 of combustion cylinder 10, also holding a kind of additive fluid feeder 14, additive fluid ZF and fuel and combustion-supporting air can be incorporated in the firing chamber 13 of combustion cylinder 10 dividually by this additive fluid feeder.
Additive fluid feeder 14 can for example have nozzle, and in order to reequip common reciprocating IC engine, can for example be arranged in in the outlet valve opening or passage set, cylinder head 11.
1 and 2 describe according to the mode of execution for the method for moving described reciprocating IC engine 1 of the present invention with reference to the accompanying drawings.
According to the present invention, the method that is used for the described reciprocating IC engine 1 of operation has the following step at least: the firing chamber 13 that fuel and combustion-supporting air is incorporated into combustion cylinder 10 by means of fuel-combustion-supporting air-feeding mechanism 12, realize the expansion stroke of reciprocating piston 20 in order to the burning by fuel and combustion-supporting air, and be incorporated in the firing chamber 13 by means of the additive fluid ZF that additive fluid feeder 14 will preferably be different from fuel and combustion-supporting air, in order to utilize this additive fluid ZF to influence described burning, wherein, additive fluid ZF and fuel and combustion-supporting air directly are injected in the firing chamber 13 dividually.
According to a kind of mode of execution according to method of the present invention, in the time of near reciprocating piston 20 is positioned at lower dead center UT, additive fluid ZF is injected in the firing chamber 13.Preferably, as reciprocating piston 20(20.2) when being arranged in lower dead center UT, additive fluid ZF is injected in the firing chamber 13.
According to the another kind of mode of execution according to method of the present invention, selection is located immediately at the top dead center at the compression stroke of reciprocating piston 20 and the igniting OT(OT-reciprocating piston 20 between the expansion stroke) before lower dead center UT, be used as in firing chamber 13, spraying into the lower dead center UT of described additive fluid ZF.
According to a kind of mode of execution according to method of the present invention, (or near this lower dead center) is injected to water in the firing chamber 13 as additive fluid ZF among the lower dead center UT before being located immediately at the igniting OT of reciprocating piston 20.
According to a kind of interchangeable mode of execution according to method of the present invention, the gas that is difficult for lighting acted as a fuel be incorporated in the firing chamber 13, wherein, near the gas that for example (or this lower dead center) can easily light among the lower dead center UT before being located immediately at the igniting OT of reciprocating piston 20 is injected in the firing chamber 13 as additive fluid ZF.
According to a kind of mode of execution according to method of the present invention, additive fluid ZF so is injected in the firing chamber 13, make its with enter into some kerosene beam or pre-burning naked light (not shown) overlaid firing chamber 13, that be used for lighting the mixture that is formed by fuel and combustion-supporting air.
According to a kind of mode of execution according to method of the present invention, additive fluid ZF is injected to targetedly at least one crush zone 13.1 of firing chamber 13.
According to a kind of interchangeable mode of execution according to method of the present invention, the gas that is difficult for lighting is being injected in the firing chamber 13 by during the lighting of fuel (preferred high-quality and inflammable fuel) and the formed mixture of combustion-supporting air as additive fluid ZF.
According to the another kind of interchangeable mode of execution according to method of the present invention, selection is located immediately at the lower dead center UT that is used for spraying into additive fluid ZF in the lower dead center UT conduct of igniting after the OT in firing chamber 13, wherein, preferably with the exhaust after-treatment agent, for example preferred ammonia is injected in the firing chamber 13 as additive fluid ZF.Also can consider other exhaust after-treatment agent according to the present invention.

Claims (10)

1. the method that is used for a kind of reciprocating IC engine of operation (1), described reciprocating IC engine has at least one combustion cylinder (10), in described combustion cylinder, hold the reciprocating piston (20) of motion between top dead center (OT) and lower dead center (UT) point-blank, wherein, described method has:
Fuel and combustion-supporting air are incorporated in the firing chamber (13) of combustion cylinder (10), realize the expansion stroke of reciprocating piston (20) in order to the burning by described fuel and combustion-supporting air, and
Additive fluid (ZF) is incorporated in the firing chamber (13), influences described burning in order to utilize described additive fluid (ZF),
It is characterized in that, described additive fluid (ZF) and fuel and combustion-supporting air directly are injected in the firing chamber (13) dividually.
2. by the described method of claim 1, wherein, when reciprocating piston (20) is positioned near the lower dead center (UT), additive fluid (ZF) is injected in the firing chamber (13).
3. by claim 1 or 2 described methods, wherein, when reciprocating piston (20) is arranged in lower dead center (UT), additive fluid (ZF) is injected in the firing chamber (13).
4. by claim 2 or 3 described methods, wherein, selection is located immediately at a top dead center (OT) lower dead center (UT) before as the lower dead center (UT) that is used for additive fluid (ZF) is injected to firing chamber (13), wherein, described top dead center is located immediately at before the expansion stroke of reciprocating piston (20).
5. by the described method of claim 4, wherein, water is injected in the firing chamber (13) as additive fluid (ZF).
6. by the described method of claim 4, wherein, the gas that is difficult for lighting acted as a fuel to be incorporated in the firing chamber (13), and the gas that will easily light is injected in the firing chamber (13) as additive fluid (ZF).
7. by each described method in the claim 1 to 6, wherein, described additive fluid (ZF) so is injected in the firing chamber (13), make described additive fluid with enter into firing chamber (13) be used for lighting some kerosene beam or the pre-burning naked light overlaid that is arranged by fuel and the formed mixture of combustion-supporting air.
8. by each described method in the claim 1 to 7, wherein, described additive fluid (ZF) is injected to targetedly at least one crush zone (13.1) of firing chamber (13).
9. by the described method of claim 1, wherein, the gas that is difficult for lighting is injected in the firing chamber (13) during lighting by fuel and the formed mixture of combustion-supporting air as additive fluid (ZF).
10. by the described method of claim 1, wherein, selection is set directly at a top dead center (OT) lower dead center (UT) afterwards as the lower dead center (UT) that is used for additive fluid (ZF) is injected to firing chamber (13), wherein, described top dead center is located immediately at before the expansion stroke of reciprocating piston (20), and wherein exhaust after-treatment agent, preferred ammonia is injected in the firing chamber (13) as additive fluid (ZF).
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