FI126000B - A method of operating a piston combustion engine - Google Patents

A method of operating a piston combustion engine Download PDF

Info

Publication number
FI126000B
FI126000B FI20135244A FI20135244A FI126000B FI 126000 B FI126000 B FI 126000B FI 20135244 A FI20135244 A FI 20135244A FI 20135244 A FI20135244 A FI 20135244A FI 126000 B FI126000 B FI 126000B
Authority
FI
Finland
Prior art keywords
combustion
additional fluid
combustion chamber
injected
fuel
Prior art date
Application number
FI20135244A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20135244A (en
Inventor
Gerhard Domberger
Philipp Henschen
Ingo Wilke
Sebastian Kunkel
Original Assignee
Man Diesel & Turbo Se
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Man Diesel & Turbo Se filed Critical Man Diesel & Turbo Se
Publication of FI20135244A publication Critical patent/FI20135244A/en
Application granted granted Critical
Publication of FI126000B publication Critical patent/FI126000B/en

Links

Classifications

    • 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
    • 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
    • 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
    • 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

Description

Method for operating a reciprocating piston internal combustion engine
The invention relates to a method configured according to the preamble of Claim 1 for operating a reciprocating engine internal combustion engine, which comprises at least one combustion cylinder in which a reciprocating piston is moveably received linearly between a top dead centre and a bottom dead centre.
A method of the type mentioned at the outset is known from DE 10 2006 054 227 A1.
The invention is based on the object of providing a method according to the preamble of Claim 1, so that a more optimal combustion can be achieved in the combustion chamber of the combustion cylinder.
This is achieved with a method according to Claim 1. Further developments of the invention are defined in the dependent claims.
According to the invention, a method for operating a reciprocating engine internal combustion engine is provided, which comprises at least one combustion cylinder in which a reciprocating piston is moveably received linearly between a top dead centre and a bottom dead centre, wherein the method comprises, introducing fuel and combustion air into a combustion chamber of the combustion cylinder in order to realise a working stroke of the reciprocating piston through combustion; and introducing an additional fluid into the combustion chamber which preferably differs from the fuel and the combustion air in order to influence the combustion with the additional fluid. The method according to the invention is characterized in that the additional fluid is directly injected into the combustion chamber separately from the fuel and the combustion air.
Since the additional fluid is directly injected into the combustion chamber separately from the fuel and the combustion air, its introduction into the combustion chamber is controlled independently of the combustion process and/or the ignition timing of a mixture formed from the fuel and the combustion air and thus optimally adapted to the influencing of the combustion to be achieved.
With the method according to the invention, an injection of the additional fluid directly into the combustion chamber is possible before, during and/or after the combustion of the mixture formed from the fuel and the combustion air. Thus, a more flexible influencing of the combustion in the combustion chamber of the combustion cylinder and thus an improved optimisation of the combustion engine can be achieved.
According to an embodiment of the invention, the additional fluid is injected into the combustion chamber when the reciprocating piston is located in the vicinity of the bottom dead centre (OT). Preferably, the additional fluid is injected in the combustion chamber when the reciprocating piston is located at the bottom dead centre.
According to a further embodiment of the invention, a bottom dead centre located directly before a top dead centre (OT) located directly before the working stroke of the reciprocating piston is selected as bottom dead centre for injecting the additional fluid into the combustion chamber, i.e. a bottom dead centre directly before an ignition OT (I ZOT) between compression and working stroke of the reciprocating piston is selected.
According to another embodiment of the invention, water as additional fluid is injected into the combustion chamber.
With such a water direct injection (WDI) the pollutant emissions of the reciprocating piston internal combustion engine can be reduced and a power increase and a knocking minimisation can be achieved. With the injection of the additional fluid in the form of water at the bottom dead centre before the ignition OT the efficiency of the combustion can be increased through evaporation cooling of the compressed water.
According to yet a further embodiment of the invention, a low-flammable gas as fuel is introduced into the combustion chamber, wherein as additional fluid an easily flammable gas is injected into the combustion chamber.
According to this configuration of the method according to the invention, the combustion of poor or low-flammable gases can be optimised through additional injection of better or easily flammable or igniting gases.
According to an embodiment of the invention, the additional fluid is injected into the combustion engine so that it overlaps with ignition oil jets or pre-chamber flares entering the combustion chamber, which are provided for igniting a mixture created from the fuel and the combustion air.
According to this configuration of the method according to the invention, the injection of the additional fluid can support or increase the ignitability of the mixture for example through local enrichment of the mixture of fuel and combustion air.
According to another embodiment of the invention, the additional fluid is specifically injected in at least one squeezing zone of the combustion chamber.
Squeezing zones or squeezing edges (e.g. on a piston base of the reciprocating piston) serve for example for swirling the mixture of fuel and combustion air in the combustion chamber. Squeezing zones are zones in which because of the reciprocating piston approaching a cylinder head of the combustion cylinder a displacement of the mixture occurs, as a result of which these zones can be partially or completely excluded from the combustion.
The targeted injecting of the additional fluid into certain combustion spaces, such as preferably squeezing zones, makes possible through the enlargement of the effective combustion space a better degree of conversion and thus a better efficiency of the combustion or the reciprocating piston internal combustion engine and generates an additional charging movement in the combustion chamber and thus a reduction of hydrocarbons generated as exhaust gas.
According to a further embodiment of the invention, a low-flammable gas as additional fluid is injected into the combustion chamber during an inflammation of a mixture created from the fuel (preferably high-quality and easily flammable fuel) and the combustion air.
According to this configuration of the method according to the invention, a lower-quality fuel can thus be specifically injected, which can contribute to the reduction of the operating costs of the reciprocating piston internal combustion engine.
According to yet a further embodiment of the invention, a bottom dead centre located directly after a top dead centre (OT) located directly before the working stroke of the reciprocating piston is selected as bottom dead centre for injecting the additional fluid into the combustion chamber, i.e. a bottom dead centre directly after the ignition OT is selected. Here, preferably an exhaust gas retreatment means, preferably ammonia, is injected as additional fluid.
According to this configuration of the method according to the invention, an SCR (selective catalytic reduction) catalytic converter, which can be provided for the reduction of nitric oxides in the exhaust gas of the reciprocating piston internal combustion engine and/or a mixing section before the SCR-catalytic converter can be omitted. This applies also to other forms of the exhaust gas retreatment by means of additional substances.
The invention expressly extends also to such embodiments which are not given through feature combinations from explicit references of the claims, so that the disclosed features of the invention - insofar as this is technically practical, can be combined with one another as desired.
In the following, the invention is described in more detail by means of preferred embodiments and making reference to the attached Figures.
Fig. 1 shows a longitudinal sectional view of a combustion cylinder of a reciprocating piston internal combustion engine.
Fig.2 shows a cross-sectional view of the combustion cylinder from Fig. 1, viewed along a line A-A in Fig. 1.
As is evident from Fig. 1 and 2, a reciprocating piston internal combustion engine 1 (not shown completely) according to the invention, which can be designed for example as diesel engine or spark-ignition engine operating according to the two-stroke process or according to the four-stroke process, comprises at least one combustion cylinder 10, in which a reciprocating piston 20 is moveably received linearly between a top dead centre OT (reciprocating piston additionally designated 20.1) and a bottom dead centre UT (reciprocating piston designated 20.2).
The combustion cylinder 10 comprises a cylinder head 11, in which a fuel-combustion air feeding arrangement 12, via which fuel and combustion air can be introduced into a combustion chamber 13 of the combustion cylinder 10 is received.
The fuel-combustion air feeding arrangement 12 can for example comprise a fuel injection nozzle and one or a plurality of air inlet valves.
In the cylinder head 11 of the combustion cylinder 10, an additional fluid feeding arrangement 14 is additionally received, via which an additional fluid ZF can be introduced into the combustion chamber 13 of the combustion cylinder 10 separately from the fuel and the combustion air.
The additional fluid feeding arrangement 14 can for example comprise an injection nozzle and for retrofitting in conventional reciprocating piston internal combustion engine can be arranged for example in an opening or passage of the cylinder head 11 provided for an exhaust valve.
In the following, embodiments of a method for operating the reciprocating piston internal combustion engine 1 according to the invention is described making reference to the Figures 1 and 2.
According to the invention, the method for operating the reciprocating piston internal combustion engine 1 comprises at least the following steps: by means of the fuel-combustion air feeding arrangement 12, introducing fuel and combustion air into the combustion chamber 13 of the combustion cylinder 10 in order to realise a working stroke of the reciprocating piston 20 by combusting these, and by means of the additional fluid feeding arrangement 14, introducing the additional fluid ZF preferably differing from the fuel and the combustion air into the combustion chamber 13, in order to influence the combustion with the additional fluid ZF, wherein the additional fluid ZF is injected directly into the combustion chamber 13 separately from the fuel and the combustion air.
According to an embodiment of the method according to the invention, the additional fluid ZF is injected into the combustion chamber 13 when the reciprocating piston 20 is located near the bottom dead centre UT. Preferably, the additional fluid ZF is injected into the combustion chamber 13 when the reciprocating piston 20 (20.2) is located at the bottom dead centre UT.
According to a further embodiment of the method according to the invention, the bottom dead centre UT directly before an ignition OT (OT - top dead centre of the reciprocating piston 20) between a compression stroke and the working stroke of the reciprocating piston 20 is selected as bottom dead centre UT for injecting the additional fluid ZF into the combustion chamber 13.
According to an embodiment of the method according to the invention, water as additional fluid ZF is injected into the combustion chamber 13 at the bottom dead centre UT (or near it) directly before the ignition OT of the reciprocating piston 20.
According to an alternative embodiment of the method according to the invention, a low-flammable gas is introduced as fuel into the combustion chamber 13, wherein for example at the bottom dead centre UT (or near it) directly before the ignition OT of the reciprocating piston 20, a easily flammable gas is injected into the combustion chamber 13 as additional fluid ZF.
According to an embodiment of the method according to the invention, the additional fluid ZF is injected into the combustion chamber 13 so that it overlaps with ignition oil jets or pre-chamber flares (not shown) entering the combustion chamber 13, which are provided for igniting a mixture created from the fuel and the combustion air.
According to an embodiment of the method according to the invention, the additional fluid ZF is specifically injected into at least one squeezing zone 13.1 of the combustion chamber 13.
According to an alternative embodiment of the method according to the invention, a low-flammable gas is injected into the combustion chamber 13 as additional fluid ZF during an inflammation of the mixture created from the fuel (preferably high-quality and easily flammable fuel) and the combustion air.
According to yet a further alternative embodiment of the method according to the invention, the bottom dead centre UT directly after the ignition OT is selected as bottom dead centre UT for injecting the additional fluid ZF into the combustion chamber 13, wherein as additional fluid ZF preferably an exhaust gas retreatment means, such as preferably ammonia is injected into the combustion chamber 13. Other exhaust gas retreatment means are conceivable according to the invention.
List of reference characters I Reciprocating piston internal combustion engine 10 Combustion cylinder II Cylinder head 12 Fuel-combustion air feeding arrangement 13 Combustion chamber 13.1 Squeezing zone 14 Additional fluid feeding arrangement 20 Reciprocating piston 20.1 Reciprocating piston at top dead centre 20.2 Reciprocating piston at bottom dead centre ZF Additional fluid OT Top dead centre UT Bottom dead centre

Claims (6)

1. Menetelmä iskumäntäpolttomoottorin (1) käyttämiseksi, joka is-kumäntäpolttomoottori käsittää vähintään yhden polttosylinterin (10), johon on otettu vastaan iskumäntä (20) yläkuolokohdan (OT) ja alakuolokohdan (UT) välillä lineaarisesti liikkuvasti, jolloin menetelmä käsittää: polttoaineen ja palamisilman viemisen polttosylinterin (10) poltto-kammioon (13) näiden palamisen avulla iskumännän (20) työtahdin toteuttamiseksi ja lisäfluidin viemisen polttokammioon (13) lisäfluidilla (ZF) palamiseen vaikuttamiseksi, jolloin lisäfluidi (ZF) ruiskutetaan erikseen polttoaineeseen ja palamisilmaan nähden suoraan polttokammioon, tunnettu siitä, että polttoaineena polttokammioon (13) viedään vaikeasti syttyvää kaasua, jolloin lisäfluidina (ZF) polttokammioon (13) ruiskutetaan helposti syttyvää kaasua, ja lisäfluidi (ZF) ruiskutetaan polttokammioon (13) niin, että se osuu yhteen polttokammioon (13) saapuvien sytytysöljysuih-kujen tai esikammiosoihtujen kanssa, jotka suihkut tai soihdut on järjestetty polttoaineesta ja palamisilmasta syntyneen seoksen sytyttämiseksi.A method of operating a percussion piston engine (1) comprising at least one combustion cylinder (10) receiving a percussion piston (20) in a linearly movable manner between an upper dead center (OT) and a lower dead center (UT), comprising: fuel and combustion air; combustion cylinder (10) to the combustion chamber (13) by combustion thereof for effecting the stroke of the percussion piston (20) and introducing additional fluid into the combustion chamber (13) to effect combustion with additional fluid (ZF), whereby the additional fluid (ZF) the fuel being supplied to the combustion chamber (13) with a flammable gas, whereby a flammable gas is injected into the combustion chamber (13) as an additional fluid (ZF), and the additional fluid (ZF) is injected into the combustion chamber (13) esikammiosoihtujen with the showers or flares arranged to ignite the mixture of fuel and combustion air. 2. Patenttivaatimuksen 1 mukainen menetelmä, jolloin lisäfluidi (ZF) ruiskutetaan polttokammioon (13), kun iskumäntä (20) on lähellä alakuolokoh-taa (UT).The method of claim 1, wherein the additional fluid (ZF) is injected into the combustion chamber (13) when the percussion piston (20) is near the lower dead center (UT). 3. Patenttivaatimuksen 1 tai 2 mukainen menetelmä, jolloin lisäfluidi (ZF) ruiskutetaan polttokammioon (13), kun iskumäntä (20) on alakuolokoh-dassa (UT).The method of claim 1 or 2, wherein the additional fluid (ZF) is injected into the combustion chamber (13) when the impact piston (20) is at the lower dead center (UT). 4. Patenttivaatimuksen 2 tai 3 mukainen menetelmä, jolloin lisäfluidin (ZF) polttokammioon (13) ruiskuttamiseksi alakuolokohdaksi (UT) valitaan alakuolokohta (UT) ennen suoraan iskumännän (20) työtahdin eteen suoraan asetettua yläkuolokohtaa (OT).The method according to claim 2 or 3, wherein the lower dead body (UT) is selected to inject the additional fluid (ZF) into the combustion chamber (13) before the upper dead center (OT) directly in front of the stroke of the piston (20). 5. Jonkin patenttivaatimuksen 1-4 mukainen menetelmä, jolloin lisäfluidi (ZF) ruiskutetaan tavoitellusti polttokammion (13) vähintään yhdelle pu-ristusalueelle (13.1).A method according to any one of claims 1 to 4, wherein the additional fluid (ZF) is preferably injected into at least one compression region (13.1) of the combustion chamber (13). 6. Patenttivaatimuksen 1 mukainen menetelmä, jolloin lisäfluidina (ZF) vaikeasti syttyvä kaasu ruiskutetaan polttokammioon (13) polttoaineesta ja palamisilmasta syntyneen seoksen syttymisen aikana.A method according to claim 1, wherein as the additional fluid (ZF) the flammable gas is injected into the combustion chamber (13) during ignition of the mixture of fuel and combustion air.
FI20135244A 2012-03-20 2013-03-13 A method of operating a piston combustion engine FI126000B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012204382A DE102012204382A1 (en) 2012-03-20 2012-03-20 Method for operating a reciprocating internal combustion engine

Publications (2)

Publication Number Publication Date
FI20135244A FI20135244A (en) 2013-09-21
FI126000B true FI126000B (en) 2016-05-31

Family

ID=49112151

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20135244A FI126000B (en) 2012-03-20 2013-03-13 A method of operating a piston combustion engine

Country Status (5)

Country Link
JP (1) JP6144076B2 (en)
KR (1) KR101940819B1 (en)
CN (1) CN103321760B (en)
DE (1) DE102012204382A1 (en)
FI (1) FI126000B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111852694A (en) * 2020-08-11 2020-10-30 潍坊天曦环保科技有限公司 Internal purification technology for internal combustion engine
CN114412648A (en) * 2022-01-27 2022-04-29 南昌济铃新能源科技有限责任公司 Combustion organization method and system for inhibiting gasoline engine knocking

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5875743A (en) * 1997-07-28 1999-03-02 Southwest Research Institute Apparatus and method for reducing emissions in a dual combustion mode diesel engine
FI112526B (en) * 1999-07-21 2003-12-15 Waertsilae Finland Oy Procedure for reducing nitric oxide emissions (NOx) from a turbocharged four-stroke piston engine
US6463907B1 (en) * 1999-09-15 2002-10-15 Caterpillar Inc Homogeneous charge compression ignition dual fuel engine and method for operation
WO2001059280A1 (en) * 2000-02-11 2001-08-16 Westport Research Inc. Method and apparatus for dual fuel injection into an internal combustion engine
JP3902018B2 (en) * 2001-04-06 2007-04-04 三菱重工業株式会社 Method and system for operating a reciprocating internal combustion engine
DE60227925D1 (en) * 2001-04-06 2008-09-11 Mitsubishi Heavy Ind Ltd OPERATION OF A COMBUSTION ENGINE WITH CRITICAL WATER
JP4232568B2 (en) * 2002-07-31 2009-03-04 株式会社豊田中央研究所 Compression self-ignition internal combustion engine and combustion control method thereof
JP5118839B2 (en) * 2006-10-31 2013-01-16 日産自動車株式会社 In-cylinder direct injection internal combustion engine
DE102006054227A1 (en) 2006-11-15 2008-05-21 Behr Gmbh & Co. Kg Diesel engine pollutant emission reducing method for motor vehicle, involves extracting water by cooling and condensation of ambient air, and storing water at board of vehicle, where water is indirectly supplied to engine over material flow
JP4370586B2 (en) * 2007-12-04 2009-11-25 明男 石田 Dual operation mode engine system
KR101121453B1 (en) * 2009-08-31 2012-03-16 삼성중공업 주식회사 a duel fuel engine
US8423265B2 (en) * 2010-05-21 2013-04-16 Toyota Jidosha Kabushiki Kaisha Control system of internal combustion engine
CN102011645B (en) * 2010-11-04 2013-06-05 金来兴 Reciprocating piston type engine capable of doing work by multi-medium vaporization mixed combustion

Also Published As

Publication number Publication date
JP2013194735A (en) 2013-09-30
KR20130106780A (en) 2013-09-30
KR101940819B1 (en) 2019-01-21
CN103321760A (en) 2013-09-25
CN103321760B (en) 2017-06-13
DE102012204382A1 (en) 2013-09-26
JP6144076B2 (en) 2017-06-07
FI20135244A (en) 2013-09-21

Similar Documents

Publication Publication Date Title
EP2247837B1 (en) Pre-chamber arrangement
US8967129B2 (en) Ducted combustion chamber for direct injection engines and method
JP5748156B2 (en) Piston arranged to reciprocate in the combustion engine cylinder
US9909489B1 (en) Piston fluid passages for reduced soot
US10731544B2 (en) Internal combustion engine and method for its operation
US20160169086A1 (en) Combustion chamber with ducts for internal combustion engines
CN109931179A (en) Especially it is used for the piston of HPDI diesel oil gas internal-combustion engine
US11199155B2 (en) Piston crown for a combustion system and an associated method thereof
FI126000B (en) A method of operating a piston combustion engine
CN114439600A (en) Pre-chamber assembly
JP2008157197A (en) Cylinder injection type spark ignition internal combustion engine
JP6675887B2 (en) Crosshead internal combustion engine
US20180094569A1 (en) Piston and Cylinder Features for Enhanced Squish Flow
JP2007162631A (en) Control device of internal combustion engine
JP3225780U (en) Low-speed large engine
CN203856595U (en) Cylinder cover for engine and engine with cylinder cover
CN111051663B (en) Combustion chamber structure of engine
JP6025873B2 (en) In particular, internal combustion engines for automobiles and methods for operating such internal combustion engines
US20130255633A1 (en) Internal combustion engine having compression-induced auto-ignition and method for igniting fuel in such an internal combustion engine
KR20090064171A (en) Piston head for gasoline direct injection engine
RU2296877C2 (en) Internal combustion engine with injection of fuel into cylinder
CN103016134A (en) Internal combustion engine
JP2010096088A (en) Cylinder direct-injection internal combustion engine
US20180094570A1 (en) Piston with Flame Guiding Passageways
CN1265078C (en) Combustion system for igniting room of gasoline engine cylinder jacket

Legal Events

Date Code Title Description
FG Patent granted

Ref document number: 126000

Country of ref document: FI

Kind code of ref document: B

PC Transfer of assignment of patent

Owner name: MAN ENERGY SOLUTIONS SE