CN1624312A - Two-stroke large diesel engine - Google Patents

Two-stroke large diesel engine Download PDF

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Publication number
CN1624312A
CN1624312A CNA2004100952237A CN200410095223A CN1624312A CN 1624312 A CN1624312 A CN 1624312A CN A2004100952237 A CNA2004100952237 A CN A2004100952237A CN 200410095223 A CN200410095223 A CN 200410095223A CN 1624312 A CN1624312 A CN 1624312A
Authority
CN
China
Prior art keywords
pressurized air
diesel engine
large diesel
stroke large
mouthful
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
Application number
CNA2004100952237A
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Chinese (zh)
Other versions
CN100425820C (en
Inventor
尼尔斯·谢姆特鲁普
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAN Energy Solutions Filial af MAN Energy Solutions SE
Original Assignee
MAN B&W Diesel AS
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
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Publication of CN1624312A publication Critical patent/CN1624312A/en
Application granted granted Critical
Publication of CN100425820C publication Critical patent/CN100425820C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
    • F02C6/10—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant
    • F02C6/12—Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
    • 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
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • 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
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F02B29/0437—Liquid cooled heat exchangers
    • 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
    • F02B75/00—Other engines
    • 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
    • F02M25/025—Adding water
    • F02M25/028—Adding water into the charge intakes
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/19—Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F2007/0097—Casings, e.g. crankcases or frames for large diesel engines
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
    • 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)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Supercharger (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

The present invention relates to a two-stroke large-scale diesel engine which comprises at least one cylinder, an exhaust main is arranged at the back of the cylinder and the front of the cylinder is equipped with a pressurized air storing device, at least one exhaust-driven turbocharger which can provide exhaust gas by the turbine and provides to the pressurized air storing device to charge the pressure of the air, the front of the pressure charging storing device is arranged with a pressurized air cooler, wherein, a device which is used for the exhaust gas recirculation is arranged and the exhaust gas can be mixed into the pressurized air relative to the air compressor at the pressure side and the upper river of the pressurized air cooler, the mixing between the exhaust gas and the pressurized gas is at least partly arranged in the area of pressurizing air pipe which is connected to the pressurized air storing device from the air compressor, a pipe part of the pressurizing air pipe is arranged and the pipe part is arranged with a plurality of mixing openings, the area of these mixing openings is arranged with a circulating current channel which is arranged with an exhaust gas inlet that is connected to the recycling pipeline and is communicated with these mixing openings.

Description

Two-stroke large diesel engine
The application is that to be called " piston worker explosive motor ", China be that March 28, Chinese application number in 2002 are dividing an application of 02108305.3 application for a patent for invention the applying date to name.
Technical field
The present invention relates to a kind of two-stroke large diesel engine as described in the preamble according to claim 1.
Background technique
The recirculation of the part by waste gas can reduce NO XDischarge capacity, this is desired.With respect to the gas compressor of exhaust-gas turbocharger, waste gas and pressurized air have such advantage in mixing on the pressure side, and promptly gas compressor and whole exhaust-gas turbocharger therewith can be smaller.In addition, guarantee that whereby responsive compressor impeller does not come in contact with waste gas.
In the equipment of the known described type of beginning, mix with pressurized air by US-A 5 611 204 a kind of, an injector device is set in the back of charger-air cooler in order to make waste gas.Yet in the zone of charger-air cooler back, pressurized air also only has smaller kinetic pressure.In order to realize mixing of waste gas and pressurized air, at this, injector device must carry out strong acceleration to pressurized air, and this causes energy loss.Therefore it upwards is restricted greatly can reaching composite rate.
Summary of the invention
Therefore set out thus, the objective of the invention is, improve the equipment of the described type of beginning, make it not only can reach high composite rate with simple and cheaply mode, and can also be fully or prevent energy loss to a considerable extent.
This purpose is reached by the feature of claim 1.
The result that measure of the present invention produces is that mixing arrangement has good accessibility, and therefore can realize simple repacking in an advantageous manner.
The favourable structural type of above measure provides in the dependent claims and draws in detail from the following examples by accompanying drawing with the further formation that conforms with purpose.
Description of drawings
In accompanying drawing described below:
Fig. 1 one has the schematic representation of the recirculation conduit that feeds the pressurized air pipeline according to two-stroke large diesel engine of the present invention; And
Fig. 2 is according to the sectional drawing of the supplier of the device of Fig. 1.
Embodiment
Main application fields of the present invention is a diesel engine, and two-stroke large diesel engine particularly is as marine engine.The basic structure of this motor and working method are known, therefore no longer need in this respect to illustrate in greater detail.
Figure 1 illustrates an a kind of cylinder 1 of two-stroke large diesel engine, piston 2 is contained in wherein, and piston 2 limits a firing chamber 3.Be provided with one by valve 4 controllable waste gas outlets 5 in the zone of cylinder head, it is connected with an exhaust manifold 7 by a vent connection 6.Whole cylinders 1 of above-mentioned motor or at least one group of cylinder 1 all are configured on this exhaust manifold 7.
Can be provided with pressurized air to firing chamber 3 by the scavenging port 8 of piston 2 controls by what be provided with in the cylinder liner zone.Scavenging port 8 is communicated with a doughnut, and this doughnut is taken over 9 by air feed and is connected with a pressurized air storage 10.This pressurized air storage 10 extends on the whole of above-mentioned motor or at least one group of cylinder 1 with exhaust manifold 7 is the same.Pressurized air storage 10 is connected by the outlet of a pressurized air pipeline 11 with the gas compressor 12 of exhaust-gas turbocharger 13, and turbine 14 can be provided with waste gas and be connected with exhaust manifold 7 by means of an outlet pipe 15 for this reason.
A charger-air cooler 16 is arranged in the pressurized air pipeline 11, utilizes the pressurized air of gas compressor 12 compressions by these cooler 16 coolings.Charger-air cooler 16 can be designed to the air/water heat exchanger.Shown in example in an advantageous manner it is designed to direct cooler, it is provided with the nozzle 17 that can water so that spray into cooling water.The water supply of nozzle 17 does not illustrate in greater detail.
In order to reduce NO XDischarge capacity, a part of waste gas is recycled, and also is about to a part of waste gas and is mixed in the pressurized air of supplying with scavenging port 8.Be provided with one by exhaust manifold 7 or the recirculation conduit 18 that branches out by outlet pipe 15 in the example as shown for this reason.It is provided with a controlling device 19 that is designed to adjustable one-way valve.By operating regulation device 19, also regulate composite rate thereby can regulate, thereby can reach best situation all the time by the volume flow of recirculation conduit 18.Being blended in whole form of implementation of the present invention with respect to gas compressor 12 of waste gas and pressurized air on the pressure side realizing, that is realize in the downstream of the impeller of gas compressor 12 and the upstream of charger-air cooler 16.
In form of implementation, carry out in the zone of the part on the housing 22 of giving vent to anger that is connected to gas compressor 12 that is blended in pressurized air pipeline 11 of waste gas and pressurized air according to Fig. 1.Described pressurized air pipeline 11 is typically provided with the diffuser 11a of a feeding charger-air cooler 16 shown in Fig. 2.Waste gas with conform with the destination mixing of pressurized air and realize that in the upstream of diffuser 11a in fact pressurized air has as the kinetic pressure when leaving the outlet housing 22 of gas compressor 12 there.
In embodiment according to Fig. 2, pressurized air pipeline 11 is provided with the joint 27 that a flange is connected in the inlet of the end of the housing 22 of giving vent to anger and diffuser 11a in the zone between housing 22 and the diffuser 11a of giving vent to anger of gas compressor 12, it has the give vent to anger pipe section 11b of distance between housing 22 and the diffuser 11a of a cross-over connection, and it to mix mouthfuls 28 and be provided with radial hole and pass the casing 30 that comprises the collection chamber 29 that preferably constitutes doughnut in order to form.This casing 30 is provided with a connecting tube 31, and mixing duct 18 flanges are connected in this connecting tube 31.Certainly, a circulating line can be set replace annular gas-collecting chamber 29, it is connected with mixing mouth 28 by short tube.Generally, in order to realize the abundant mixing of waste gas, the kinetic pressure of pressurized air is enough usefulness.Pipe section 11b can be designed to have the pipeline section that keeps same diameter on its total length in this case.Pipe section 11b is provided with the constriction 32 that an outfit give to mix mouthful in the example shown, and it causes the acceleration of pressurized air, that is causes the raising of kinetic pressure and therefore cause the decline of static pressure.
Multiple general obviously can be set in case of necessity roughly multiple arrangement be set according to the mode adjoining land of Fig. 2, shown in dashed lines among Fig. 1.It is contemplated that equally, can directly in the housing of giving vent to anger of gas compressor 12, be provided with one or more like this with combined layout of mixing of waste gas.

Claims (8)

1. two-stroke large diesel engine, it has at least one cylinder (1), be provided with an exhaust manifold (7) in the back of cylinder and be provided with a pressurized air storage (10) in the front of cylinder, and has at least one exhaust-gas turbocharger (13), its turbine (14) can be provided with waste gas and its gas compressor (12) is supplied with pressurized air storage (10) with pressurized air, be provided with a charger-air cooler (16) in the front of pressurized air storage, wherein, be provided with a device that is used for exhaust gas recirculation, this waste gas can with respect to gas compressor (12) on the pressure side and the combined upstream of charger-air cooler (16) in pressurized air, it is characterized in that, being mixed in the zone that small part is arranged on a pressurized air pipeline (11) that is connected to pressurized air storage (10) from gas compressor (12) of waste gas and pressurized air, wherein, be provided with a pipe section (11b) of pressurized air pipeline (11), this pipe section is provided with some and mixes mouthful (28), and be provided with a circulation channel in these mix the zone of mouthful (28), this circulation channel is provided with one and can be connected to the exhaust gas entrance on the recirculation conduit (18) and mixes mouthful (28) with these and be communicated with.
2. according to the described two-stroke large diesel engine of claim 1, it is characterized in that, described circulation channel is designed to doughnut, this doughnut surrounds and describedly mixes the pipe section (11b) of mouthful (28) and constitute a collection chamber (29) comprising of pressurized air pipeline (11), and this doughnut is also connected to that recirculation conduit (18) is gone up and from this doughnut described mixings mouth (28) that diverges out.
3. according to the described two-stroke large diesel engine of claim 1, it is characterized in that, described circulation channel is designed to circulating line, this circulating line surrounds describedly to have the pipe section (11b) that mixes mouthful (28) and is connected to recirculation conduit (18), and this circulating line also is connected with mixing mouth (28) by some short tubes.
4. according to the described two-stroke large diesel engine of claim 1, it is characterized in that, the described pipe section (11b) that mixes mouthful (28) that comprises of pressurized air pipeline (11) has a constriction (32), and this constriction is furnished with described mixing mouthful (28).
5. according to the described two-stroke large diesel engine of claim 1, it is characterized in that, a zone of pressurized air pipeline (11) is furnished with the mouth of mixing (28), has as the kinetic pressure when leaving the outlet housing of gas compressor 12 at this zone pressurized air.
6. according to the described two-stroke large diesel engine of claim 1, it is characterized in that pressurized air pipeline (11) is provided with the diffuser that is provided with previously (11a) and the waste gas and the upstream that is arranged on diffuser (11a) mixing of pressurized air at charger-air cooler (16).
7. according to the described two-stroke large diesel engine of claim 1, it is characterized in that, in the zone of the recirculation conduit that can be provided with waste gas (18), be provided with a controlling device (19).
8. according to the described two-stroke large diesel engine of claim 1, it is characterized in that charger-air cooler (16) is designed to be provided with the direct cooler of the nozzle (17) that is used to spray into freezing mixture.
CNB2004100952237A 2001-04-04 2002-03-28 Two-stroke large diesel engine Expired - Fee Related CN100425820C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10116643.5 2001-04-04
DE10116643A DE10116643C2 (en) 2001-04-04 2001-04-04 reciprocating internal combustion engine

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CNB021083053A Division CN1219964C (en) 2001-04-04 2002-03-28 Piston type explosive motor

Publications (2)

Publication Number Publication Date
CN1624312A true CN1624312A (en) 2005-06-08
CN100425820C CN100425820C (en) 2008-10-15

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CNB2004100952237A Expired - Fee Related CN100425820C (en) 2001-04-04 2002-03-28 Two-stroke large diesel engine
CNB021083053A Expired - Fee Related CN1219964C (en) 2001-04-04 2002-03-28 Piston type explosive motor

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Application Number Title Priority Date Filing Date
CNB021083053A Expired - Fee Related CN1219964C (en) 2001-04-04 2002-03-28 Piston type explosive motor

Country Status (4)

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JP (3) JP3920687B2 (en)
KR (1) KR100506467B1 (en)
CN (2) CN100425820C (en)
DE (1) DE10116643C2 (en)

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CN101198777B (en) * 2005-06-17 2010-11-24 斯堪尼亚有限公司 A cooler arrangement
CN101278120B (en) * 2005-09-30 2012-05-16 雷诺股份公司 Device for distributing recirculated gases, device for cooling recirculated gases and method of recirculating exhaust gases
CN100540877C (en) * 2005-12-01 2009-09-16 曼B与W狄赛尔公司 Be used for reducing the method for NOx effluent of internal-combustion engine and the internal-combustion engine that is suitable for
CN113323750A (en) * 2021-04-19 2021-08-31 江苏常兴动力机械有限公司 Four-stroke novel supercharged diesel engine

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JP2002349272A (en) 2002-12-04
DE10116643A1 (en) 2002-10-17
CN1219964C (en) 2005-09-21
JP3920687B2 (en) 2007-05-30
JP2006300078A (en) 2006-11-02
KR100506467B1 (en) 2005-08-03
JP4105739B2 (en) 2008-06-25
DE10116643C2 (en) 2003-07-03
JP4309446B2 (en) 2009-08-05
JP2008088981A (en) 2008-04-17
CN1379172A (en) 2002-11-13
KR20020079387A (en) 2002-10-19
CN100425820C (en) 2008-10-15

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