CN100447385C - Large superchared explosive motor - Google Patents
Large superchared explosive motor Download PDFInfo
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- CN100447385C CN100447385C CNB031369103A CN03136910A CN100447385C CN 100447385 C CN100447385 C CN 100447385C CN B031369103 A CNB031369103 A CN B031369103A CN 03136910 A CN03136910 A CN 03136910A CN 100447385 C CN100447385 C CN 100447385C
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- air
- supercharger
- combustion engine
- internal combustion
- large internal
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- 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
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- 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
Abstract
The large internal combustion engine with a super charger comprises a turbocharger having a turbine driven by an exhaust gas, and a compressor driven by the turbine for supplying supply air to a cylinder of the engine. The engine is further provided with a humidification unit (12) for raising an absolute humidity of the supply air by humidifying the supply air. Part of the exhaust gas is branched upstream of the turbine and guided to an output consumption device. One or a plurality of the humidification units may be water tanks (40 and 41) through which bubbles of the gas to be humidified are made to pass.
Description
Technical field
The present invention relates to a kind of large internal combustion engine with supercharger, for example the master motor on the ship comprises a turbosupercharger and a compressor that is driven and charged into to the cylinder supply air by turbine that has an exhaust gas-driven turbine.Motor also comprises a cooling unit, is used for cooling off the gas that charges into by the injection of water.
Background technique
For example world patent WO-9 429 579, disclose a kind of large supercharged two-stroke explosive motor, and it has one and transmits to cylinder and to charge into air and the compressor that purifies air and cooling cooler from the air of compressor.Cooler turns round by airborne water pressure is atomized.This cooler comprises a plurality of continuous sprayer parts, and a drop collection part can be set between at least two sprayer parts, and this drop is collected the water droplet of part separation from air.Temperature is that the water injection of ambient temperature advances in the air stream, and the temperature that will charge into air drops to low as far as possible.In this piece document, the purpose of the airborne water of pressure atomization is the cooler of the intake system of a kind of large two-stroke explosive motor that is used to have big cooling capacity of design, and it effectively turns round, reliably and seldom needs repairing.
World patent WO-9 429 587 discloses a kind of large supercharged two-stroke explosive motor, wherein, waste gas from the high pressure side of turbine to the gas charging system recirculation of motor.This motor need use heavy oil to make fuel, and it produces a large amount of comburants, and these comburants are harmful to for the engine components that contacts with waste gas.The waste gas of heavily contaminated can not carry out recirculation simply, because responsive engine section can be damaged.Therefore, at least a portion of the waste gas of recirculation is 100% by humidification to relative moisture roughly.This has reduced the amount of unwanted combustion thing, and has reduced the amount of the NOx that is produced by burning.Using the purpose of air wetting unit in this piece document is to make the waste gas in the large supercharged diesel engine carry out recirculation as follows, that is, for each engine components, motor keeps efficient and long lifetime.
Usually, these motors of the prior art are cooled that to drop to about 37 ℃ and absolute humidity be that every kg water in air vapour quality is to turn round under 4 to 12g the environment charging into air.
In the art, in general, turbogenerator charges at low temperature that running is favourable under the environment of air, because this can bring high burning efficiency and produce lower thermal load on motor.
The general objects of using humidifying unit in the prior art is a Purge gas from impurity.
Summary of the invention
The purpose of this invention is to provide a kind of large combustion engine, its whole efficiency improves.According to the present invention, a kind of boosting explosive motor comprises: a turbosupercharger, and it has an exhaust-driven turbine and one by turbine drives and charge into the compressor of air to the cylinder supply; A waste gas duct, it guides to turbine with waste gas from cylinder; Cool off the cooling unit that charges into air with one by the water that injects.Turn round this cooling unit and realize charging into the high absolute humidity and the higher temperature of air, and drive an auxiliary turbine by the waste gas that comes from the waste gas duct shunting.Described large internal combustion engine with supercharger also comprises the device of controlling the absolute humidity that charges into air that leaves cooling unit.
This motor can turn round under the situation with respect to traditional motor increase in temperature that charges into air and absolute humidity.Therefore the energy content of integral body that charges into air is than conventional engines height.Because the air from compressor is not cooled, that is to say that temperature reduces to a certain degree but do not have energy to lose from charge into air, so the temperature and the absolute humidity that charge into air increase.Generation be, charge into airborne energy and stored, charge in the air even energy is injected into to charge into to be added in the air by the water with controlled temperature.Preferably, the projecting environment of the temperature of the water of injection.
The mass flow ratio of waste gas is directly charged into the influence of increase of the absolute humidity of air, and therefore, the energy content of off-gas flows is compared with traditional working order to some extent to be increased.Additional energy can be as driving turbine purpose in addition.Therefore, part waste gas is shunted out and is used for driving an auxiliary turbine, and main simultaneously turbine still receives sufficient energy.Therefore, the output of the integral energy of motor increases, and the employed fuel quantity of motor is roughly the same simultaneously.Because the part wasted energy of motor, the energy that promptly has low radioactivity is added to and is injected in the water that charges into air, and therefore these wasted energys change into the energy with high radioactivity that can shunt from exhaust flow, and this is in the cards.
The energy that is used for heating the water that will inject can obtain from the low-quality energy, for example, has the energy of low radioactivity.The energy with low radioactivity generally can obtain with forms such as waste gas, (sheath) cooling liquids around motor.
In fact the energy that is used for heating the water that will inject is added into air-flow (under the form with the temperature and humidity of the increase that charges into air), and can be used as the energy recovery with high radioactivity.Part exhaust flow by shunting turbine upstream comes recovered energy, and promptly the form with energy with high radioactivity reclaims.Because the increase of the whole energy content in the exhaust flow, can under the situation of the amount of the common available energy that does not reduce turbine, realize.
Therefore, by exempting cooling, humidification charges into gas and add " giving up " energy in charging into air simultaneously, and the extra energy content that produces in off-gas flows can be shunted, and then the whole efficiency of motor increases.Energy with low radioactivity can be by the shunting more energy energy recovery that is used as having high radioactivity from off-gas flows, otherwise it will be counted as wasted energy.Therefore, the whole efficiency of motor is promoted.
Opposite with prior art, in the present invention, use the main purpose of humidifying unit to be, design has a kind of energy is added to charge into airborne cooler, rather than designs and of the prior artly take away the cooler of energy from charging into air.The temperature of using this cooler will charge into air is controlled at a higher relatively level, makes it contain a large amount of water vapour,, obtains to have the air that charges into of high energy content that is.
Therefore, the present invention has overcome a prejudice, that is, it is generally acknowledged, in order to reduce the thermal load that is added on the motor, wishes that the turbosupercharger motor turns round under low temperature charges into air, because cold charge into the efficient that air helps improving engine combustion process.Also have, charging under the high absolute humidity of air, because NO
xLevel, exhaust mass is improved.
The energy that additionally obtains in exhaust flow is sent to an energy absorption device.This energy absorption device can be a turbine for example, and it is coupled to:
Generator,
The oil hydraulic pump that is used for the provisioning engine hydraulic system, or
The exhaust gas recirculation gas fan,
The exhausted air quantity that distributes from energy absorption device can be regulated according to the operating condition of motor, as regulating by a unsteady flow amount regulator.
Humidifying unit is a flusher that has a plurality of sprayer sections preferably.The pressure atomization of airborne water can be sprayed airborne a large amount of water, thereby air can be become the full state that closes by humidification effectively.On one section very short air-flow length, flusher can be with a large amount of water atomizations to charging in the air, and this point is very important for the required effective humidification that obtains roughly 100% relative moisture.The airborne water yield of closing state in humidity-full increases along with the rising of temperature is index.The absolute humidity of available air mainly depends on the temperature that charges into air, in order to make the absolute humidity maximum, does not have energy to be pulled away when charging into air by humidifying unit.Therefore make the air that charges into that leaves humidifying unit obtain high temperature and high absolute water content.Like this, leave the temperature that charges into air of humidifying unit and can measure, and the amount of water of temperature and atomizing possibly can correspondingly be regulated.Therefore, can be controlled the temperature that charges into air of leaving humidifying unit and the absolute humidity of same air.
Can provide on one or more Upstream sections with dirty relatively water, as seawater and; One or more tracts can provide the water with relative cleaning.
The absolute humidity that charges into air in the outlet port of humidifying unit can be controlled between 10 to 120g/kg.The temperature that charges into air in the outlet port of humidifying unit can be controlled between 37 ℃ to 85 ℃.
Motor can be four-stroke or two-stroke.
Must use a large amount of water to come to carry out humidification to charging into gas.The consumption of engine water can reach four times of consumption of fuel.In output power is 25, and in the big-and-middle-sized diesel engine of 000kw, per hour the amount of the water of Xiao Haoing is the 12-17 ton.On the deck of ship, or in the beach or the power station in nearly river, the water that such quantity is provided is out of question.
Motor also can have an exhaust gas recirculation conduit, preferably comprises one second humidifying unit.This second humidifying unit can be a tank, becomes bubble by its waste gas.By using exhaust gas recirculation, can further increase the efficient of motor.The waste gas of recirculation can be by humidification in an independent humidifying unit.
Leaving the absolute humidity of the air of humidifying unit can control by the temperature that the air of the temperature that charges into airborne water and/or the upstream by regulating described compressor is added in adjusting to.
The energy content that is included in the part that waste gas distributes can reach 15% of total energy content that exhaust flow comprises.
The target of other of motor, feature, advantage and characteristic will be described in detail below.
Description of drawings
Below in conjunction with specific embodiments and the drawings the present invention is carried out detailed explanation and explanation:
Fig. 1,2,3 and 4 is according to the suction of an explosive motor of the present invention and four kinds of different embodiments' of the system of discharge schematic illustration; With
Fig. 5 is the schematic representation of a preferred embodiment that EGR gas is carried out the device of humidification.
Embodiment
Below in conjunction with specific embodiment the present invention is carried out detailed explaining.With reference to Fig. 1, shown large supercharged two-stroke explosive motor is generally by reference character 1 expression.Motor 1 has one to charge into air receiver 2 and a waste gas receiver 3, belongs to the firing chamber by the outlet valve of reference character 4 indications.Motor can for example be used for master motor or the used stationary engine of the operated generator in power station on the ship.Total output work of motor in the scope of 000KW, for example is 1 but the present invention also can be used in output power, in the four stroke engine of 000KW for example 5,000 to 70.
Charge into air and be passed into the air purification part of Indivudual cylinder from charging into air receiver 2.When outlet valve 4 was opened, exhaust flow passed waste gas duct and arrives waste gas receiver 3 and pass the turbine 6 that a traditional waste gas duct 5 arrives a turbosupercharger inwards, discharged by exhaust manifolds 7 from exhaust flow here.By an axle 8, turbine 6 Driven Compressor 9, compressor 9 is supplied air by an air inlet 10.The air that enters can enter air heater 33 by one and heat, and the waste heat source of preferred use such as cooling liquid heats the air that enters.Compressor 9 will pressurize charges into air and is sent to one and charges into air conduit 11, and this charges into air conduit 11 and is passed into and charges into air receiver 2.
Suction air in the conduit 11 passes a humidifying unit 12, and humidifying unit 12 has three sprayer section 13-15 in illustrated embodiment.In first section 13, the water (as seawater) of the available run-of-the-mill through heating passes a plurality of roses that a pipe 17 arrives humidifications and purified gases.Supply is excessive water suitably, and making does not have particulate deposits in gas, goes out as the salt in the water or other impurity.In second section 14, the water of supplying with by a pipe 18 is atomized in charging into air.Same, in the 3rd section 15, the fresh water of supplying with by a pipe 19 is atomized in charging into air.The temperature that is supplied to the water of each section charges into air temperature and humidity is controlled according to required.The end of each section 13,14,15 comprises a drip collector, and described drip collector separation is suspended in the drop in the gas and contains from charging into airborne pollutant.Can be in cooler use section still less.Wherein, Duan quantity can adapt to the corresponding change of output of motor.
Being conducted to the seawater of rose and fresh water utilizes " giving up " thermals source to cool off by a thermoconverter 34 or heats.Should " giving up " thermal source can for example be engine cooling water 35.In addition, the water of supplying with humidifying unit 12 can utilize waste gas to come preheating by a thermoconverter 38, as shown in Figure 2.The characteristic that can select heat exchanger is so that the water vapor condensation in the waste gas, thereby it can be recovered.
Leaving the absolute humidity that charges into air and the temperature of humidifying unit can pass through to control the temperature of the water in each section 13,14,15 of supplying with in the humidifying unit 12 respectively and/or control the temperature that enters air by a heater 33 and control.
In the outlet of flusher 12, the temperature of air is measured by sensor 39, and sends a signal to the control unit (not shown).Control unit compares the temperature that records and the temperature of required (presetting).Do not conform to the value of being scheduled to if leave the temperature of the air of flusher 12, in order to eliminate the temperature difference, control unit is regulated the temperature of the water of the different sections that are supplied to flusher 12.
The temperature of the water of supply nozzle is controlled, makes can obtain required air temperature and absolute humidity when charging into when air leaves humidifying unit.In order to realize required engine operating status, select required value according to environment, it can for example be the situation of absolute humidity that charges into the maximum of air, or is added in the minimum thermal loading condition on the motor, or is positioned between the two.
The air of humidification passes the auxiliary gas fan 16 that is driven by motor 20, and to charging into the air stream supercharging under the partial load state, and the cylinder that passes motor is to waste gas duct 5, and this waste gas duct 5 leads to the turbine 6 of turbosupercharger 8.Conduit 24 comes out from waste gas duct 5 branches in the upstream of turbine 6.Described conduit 24 links to each other with the auxiliary turbine 26 that drives generator 27.Therefore energy superfluous in the exhaust flow is transformed into electric energy, for example, has the energy of high radioactivity.The exhausted air quantity that branches to auxiliary turbine 26 may be regulated by a changeable flow regulator 25 that is positioned at conduit 24.
Another kind of form, auxiliary turbine 26 (not shown) that can link to each other with an oil hydraulic pump.(not shown) in other form, the gas fan 30 that auxiliary turbine 26 drives in the exhaust gas recirculation conduit 28.
Auxiliary turbine also can replace with the energy consumption device of the gas-powered of other form, for example, and any positive displacement or on-positive displacement machine or motor.
According to another preferred embodiment shown in Figure 3, motor uses EGR gas.A recycling pipe 28 comes out from waste gas duct 5 top sets, and with charge into air conduit 11 and link to each other, therefore, recycling pipe forms a recirculation line with the part of the intake system in the downstream, attachment portion that is positioned at the conduit 28 that links to each other with conduit 11.
A flusher 29 is inserted in the recycling pipe 28, is used for coming humidification and purifying waste gas with water.Warm water offers flusher 29 from heat exchanger 34.The gas that comes out from flusher 29 leads to the gas fan 30 that is driven by motor 31.Even waste gas is to turn in the high pressure side of turbine 6, gas fan 30 also is necessary for these waste gas superchargings, reaches than the high stress level of the pressure that charges into air in the conduit 11.Although have pressure ratio between the suction side of motor and the discharge side, gas fan 30 makes recirculation become possibility, this means that recirculation all can realize under any required engine load.The waste gas of recirculation can be directed into as shown in figure humidifying unit 12 the upstream conduit 11 or may be directed to the conduit 11 in the downstream of humidifying unit 12 (not shown)s.
If the waste gas of recirculation is directed into the upstream of humidifying unit 12,, just can use high speed to charge into air to absorb EGR gas at least in part from compressor by utilizing sparger and Venturi tube effect.In this case, do not have or only have a little waste gas gas fan 30 just can realize the recirculation of waste gas.
Replace atomizing humidifying performance unit 12,29, can use a humidifying unit that comprises at least one tank 40,41 (as shown in Figure 5), waste gas becomes bubble by tank.Its advantage is that the water in the tank also can play the effect of noise barrier.Relatively than cold-peace relatively than the temperature range between the enthusiasm condition in, heat exchanger 34 be these tank 40,41 water supply.Humidifying unit 12,29 can have a section or a plurality of sections, and this depends on the purifying and the humidification degree of waste gas, and humidifying unit 12,29 can combine with a plurality of atomizing humidifying performances unit.
Example 1
Below case description the operation mode of the flusher in engine apparatus, herein, recycle gas is purified and humidification in humidifying unit 29, all charge into air in a two-part humidifying unit 12 by humidification.Can select the operating condition of motor, so that the energy of maximum flow can be shunted from exhaust flow.For simplicity, be 25 based on fully loaded input power, 000KW and the specified pressure that charges into air are that the motor under the 360Kpa situation calculates.
Motor turns round under 100% load, and the temperature of surrounding atmosphere is 25 ℃, and relative moisture is 30%, this means that the water content that sucks air is approximately 6g water/kg air.The air consumption of motor is approximately 55kg/s.Through behind the compressor 9, the temperature of air is T1=190 ℃, and relative moisture is 0.25%.
In first humidifying segment 13, in the salt water yield that is approximately under 70 ℃ the temperature to rose 13 supply l/s.Preferably, by using " give up " energy (being the low energy of radioactivity), can obtain the temperature of desired water as engine coolant, engine exhaust or other " giving up ".Air wetting is more than 90% to relative moisture, and the drying temperature of air is 85 ℃, produces the air that absolute humidity is 110g/kg like this.From first section of the washing away discharge, the salinity major part of air is purified.
In second humidification and the section of washing away 14, the fresh water (preferably can obtain) by rose ejection 50l/s in temperature is 100 to 150 ℃ scope by " giving up " in the use waste gas.The temperature of air remains on about 85 ℃, and therefore the absolute humidity of 100% humidity-full air that closes is about 120g water/kg air.
If use an independent flusher 29 to come the waste gas of purifying recirculation in conduit 28, then proper is, in purifying, relative moisture and the temperature of waste gas humidification to about 100% is approximately 110 ℃.
The temperature of leaving the air of flusher is approximately 85 ℃, and absolute humidity is 120g/kg.With traditional temperature be 37 ℃, absolute humidity is that the air that charges into of 6g/kg is compared, this can cause that the energy that is included in the exhaust flow increases by 30%, concerning this example, selected motor correspondingly increases the power of 16500KW.This additional 16500KW makes 16% exhaust flow shunt from waste gas duct 5, and is sent to auxiliary turbine 26.Other all condition is identical, and is identical with the amount of the energy of the fuel form of using in the traditional motor.Therefore, only increase the extra merit that the energy input can have 1675KW at auxiliary turbine place slightly, make oil consumption rate (SFOC) improve 4%.
Example 2
This example has shown selects the possibility of the operating condition of motor under the situation of the low thermal force of motor.With the condition of as above identical environmental conditions and engine load under, it is 30 ℃ that rose in first section of washing away 12 is supplied with temperature, flow is at least the seawater of 20l/s, therefore, by evaporate change charge into air temperature to being approximately T1=75 ℃, humidification is approximately 90% to relative temperature, and absolute humidity reaches the level of about 65g/kg.
In second section of washing away 13, supplying with has temperature to be approximately 30 ℃, and flow velocity is the water of 60l/s.This will charge into air cooling and be approximately 37 ℃ to temperature, and be approximately 11g/kg at the 100% full absolute humidity that closes under the gas.
Therefore, can realize that the low thermal force of motor is set, for example, be used in when engine thermal overload signal occurring.
Example 3
This example has shown that at motor be the possibility that middle heat is selected the operating condition of motor when carrying.With the condition of as above identical surrounding environment and engine load under, it is 50 ℃ that the rose in the first flusher section 12 is supplied with temperature, flow velocity is approximately the seawater of 13l/s.This temperature change that will charge into air charges into air simultaneously and is arrived about 80% relative moisture by humidification to about 75 ℃.Therefore absolute humidity reach the level of about 59g/kg.
In the second flusher section 13, supplying with has temperature to be approximately 76 ℃, and flow velocity is the water of 50l/s.This temperature change that will charge into air is approximately 76g/kg to being approximately 75 ℃ in 100% full air absolute humidity of closing under the gas.
Therefore, can realize that the middle thermal force of motor is set, this makes that motor can be at NO
xDistribute and reduce and the amount of the energy that shunting is come out from exhaust flow is less than under the situation of the amount in the example 1 and turns round.
With reference to Fig. 4 and Fig. 5, show another embodiment of the present invention.Motor 1 has one and charges into air receiver 2 and a waste gas receiver 3, and the outlet valve that is referred to by reference character 4 belongs to the firing chamber.Charge into air through charging into the purification gas port of air receiver 2 arrival Indivudual cylinders.When outlet valve 4 was opened, exhaust flow entered waste gas receiver 3 through an inflating catheter, and passed a traditional waste gas duct 5 forward and arrive the turbine 6 of a turbosupercharger, crossed a waste gas duct 7 from exhaust flow here and discharged.By an axle 8, turbine 6 drives a compressor 9 by a suction port 10.The air that enters can heat by an air intake heater 33, and is preferred, uses waste heat source, as cooling liquid, heats and enters air.Compressor 9 is to leading to the air that charges into that air conduit 11 transmits atomizing that charges into that charges into air receiver 2.Suction air in the conduit 11 passes the humidifying unit 12 ' that has two tanks 40,41.
Motor can comprise an exhaust gas recirculation conduit.In this case, recycling pipe 28 comes out from waste gas duct 5 branches, and with charge into air conduit 11 and link to each other, thereby this recycling pipe be positioned at the part of conduit 28 and form a recirculation line with the intake system in the downstream, attachment portion of conduit 11.A waste gas gas fan 30 that is driven by motor 31 can be installed in the conduit 28, charge into air conduit 11 in order to promote the recycle gas flow direction.Recycle gas is through having the humidifying unit 29 ' of two tanks 40,41.
Structure with humidifying unit 29 ' on the structure principle of humidifying unit 12 ' is identical.Therefore, the details of the structure of humidifying unit 12 ', 29 ' can be together with reference to Fig. 5.Show a two-part humidifying unit herein.These two sections are interconnected by conduit 50.Humidifying unit can comprise more section or have only a section.And, the humidifying unit of tank type and the humidifying unit of a sparger type can be combined.Each section comprises that has a seat 44,44 ' that is filled with the space 42,42 ' of water to small part.Conduit 43,43 ' is sent to the air that will charge in the seat 44,44 ', arrives the some place be lower than space 42,42 '.Space 42,42 ' is positioned at described seat, and is filled with water at least in part.Water is to supply by an inlet 47,47 ', and by an outlet 48,48 ' discharges.Preferably, water is without interruption, discharges more continuously.Preferably, the temperature of the water in supply space 42,42 ' is controlled.Space 42,42 ' is limited by seat, coboundary 46,46 ' and lower boundary 45,45 '.Border 45,45 ', 46,46 ' forms one produces the flow restriction that pressure descends.There are a lot of holes on border 45 on 45 ', 46,46 ', by these holes, the gas turnover space 42,42 ' of humidification.When gas passes lower boundary 45,45 ', form a large amount of bubbles, gas is overflowed from water.Border 45,45 ', 46,46 ' can for example be formed by screen or perforated metal.
In order further to improve the degree of humidification, can in pipe 42, provide a spray nozzle 49.
After each section of humidifying unit, provide a moisture separator (not shown), as a mist eliminator.
Though for the purpose of illustrating, more than the present invention is described in detail, be appreciated that such detailed description just for purposes of illustration, those skilled in the art allows in the various changes that do not depart within the scope of the present invention.
Therefore, the description that the contrast specific embodiment carries out various apparatus and method is just to explanation of the present invention, and these apparatus and method are not unalterable.Do not depart from spirit of the present invention and essence other mode of execution and structure all within protection scope of the present invention.
Claims (12)
1. large internal combustion engine with supercharger comprises: a turbosupercharger, and it has an exhaust-driven turbine (6) and a compressor (9) that is used for charging into to the cylinder supply air by turbine drives; A waste gas duct (5), it is directed to turbine (6) with waste gas from cylinder; Cool off the cooling unit (12) that charges into air with one by the water that injects, wherein
Running by cooling unit (12) obtain high absolute humidity and relatively-high temperature charge into air and
In the high pressure side of turbine (6) by exhaust gas driven one energy absorption device (26) that comes out from waste gas duct (5) shunting,
It is characterized in that,
Described large internal combustion engine with supercharger also comprises the device (33,34) of controlling the absolute humidity that charges into air that leaves cooling unit (12).
2. large internal combustion engine with supercharger as claimed in claim 1 is characterized in that: energy absorption device is an auxiliary turbine (26).
3. large internal combustion engine with supercharger as claimed in claim 1 is characterized in that: be supplied to the temperature of the water of cooling unit to be higher than ambient temperature.
4. large internal combustion engine with supercharger as claimed in claim 3 is characterized in that: be supplied to the wasted energy of temperature by motor of the water of cooling unit to raise, thereby be higher than ambient temperature.
5. large internal combustion engine with supercharger as claimed in claim 1 is characterized in that: the air that charges into of high humility and relatively-high temperature degree makes the increase charge into the energy that comprises in the air and waste gas, and the energy that is included in the waste gas of increase is used for driving auxiliary turbine.
6. large internal combustion engine with supercharger as claimed in claim 2 is characterized in that: auxiliary turbine (26) and a generator (27), a hydraulic pamp or an exhaust gas recirculation gas fan coupling, or the combination of these devices coupling.
7. large internal combustion engine with supercharger as claimed in claim 1 is characterized in that: also comprise a recirculation line (28) of part waste gas being sent back to cylinder.
8. large internal combustion engine with supercharger as claimed in claim 7 is characterized in that: described recirculation line (28) comprises one second humidifying unit (29).
9. large internal combustion engine with supercharger as claimed in claim 8 is characterized in that: described second humidifying unit comprises a tank (40,41), becomes bubble by tank (40,41) waste gas.
10. large internal combustion engine with supercharger as claimed in claim 7, it is characterized in that: described recirculation line (28) comprises a conduit, described conduit comes out from exhaust manifolds (5) branch of turbine upstream, and link to each other with the air conduit (28) that charges in compressor (9) downstream, described conduit (28) links to each other with a gas fan (30) with described second humidifying unit (29); And/or sparger of pressure that is used for increasing EGR gas that is arranged in the compressor outlet place.
11. large internal combustion engine with supercharger as claimed in claim 8, it is characterized in that: described cooling unit (12) and/or described second humidifying unit (29) comprise flusher and/or the tank (40 that has a plurality of water spray device sections, 41), form bubble by described tank (40,41) gas.
12. large internal combustion engine with supercharger as claimed in claim 1 is characterized in that: the device that described control charges into the absolute humidity of air comprises the device (34) that imports the temperature that charges into airborne water in order to control by cooling unit (12).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA200200771 | 2002-05-21 | ||
| DKPA200200771 | 2002-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100569738A Division CN100400843C (en) | 2002-05-21 | 2003-05-21 | Large internal combustion engine with supercharger |
| CNB2005100569723A Division CN100365265C (en) | 2002-05-21 | 2003-05-21 | Large internal combustion engine with supercharger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1461876A CN1461876A (en) | 2003-12-17 |
| CN100447385C true CN100447385C (en) | 2008-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031369103A Expired - Fee Related CN100447385C (en) | 2002-05-21 | 2003-05-21 | Large superchared explosive motor |
| CNB2005100569723A Expired - Fee Related CN100365265C (en) | 2002-05-21 | 2003-05-21 | Large internal combustion engine with supercharger |
| CNB2005100569738A Expired - Fee Related CN100400843C (en) | 2002-05-21 | 2003-05-21 | Large internal combustion engine with supercharger |
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| CNB2005100569723A Expired - Fee Related CN100365265C (en) | 2002-05-21 | 2003-05-21 | Large internal combustion engine with supercharger |
| CNB2005100569738A Expired - Fee Related CN100400843C (en) | 2002-05-21 | 2003-05-21 | Large internal combustion engine with supercharger |
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| JP (4) | JP2003343272A (en) |
| KR (1) | KR100720876B1 (en) |
| CN (3) | CN100447385C (en) |
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| US10196067B2 (en) * | 2016-07-21 | 2019-02-05 | Ford Global Technologies, Llc | Method and system for controlling water injection |
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- 2003-05-21 CN CNB2005100569723A patent/CN100365265C/en not_active Expired - Fee Related
- 2003-05-21 CN CNB2005100569738A patent/CN100400843C/en not_active Expired - Fee Related
- 2003-05-21 JP JP2003143588A patent/JP2003343272A/en active Pending
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2006
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2009
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Also Published As
| Publication number | Publication date |
|---|---|
| CN1461876A (en) | 2003-12-17 |
| JP2012013089A (en) | 2012-01-19 |
| CN1664344A (en) | 2005-09-07 |
| CN100400843C (en) | 2008-07-09 |
| CN100365265C (en) | 2008-01-30 |
| JP2003343272A (en) | 2003-12-03 |
| CN1664345A (en) | 2005-09-07 |
| KR100720876B1 (en) | 2007-05-22 |
| JP2007016792A (en) | 2007-01-25 |
| JP5504226B2 (en) | 2014-05-28 |
| KR20030091725A (en) | 2003-12-03 |
| JP2009293623A (en) | 2009-12-17 |
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