• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:SE1051078A1
    申请号:SE1051078
    申请日:2010-10-15
    公开日:2012-04-16
    发明作者:Andreas Liljestrand；Per Bremberg
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    10152025302usually called, can occur at desired intervals so that the emission values fromthe engine can be minimized.
    During a regeneration, however, some gases are released, including containinghydrocarbons (HC), which gases can have an unpleasant odor and thus cause discomforteffects on the people exposed to them. If the engine is arranged in onevehicles moving, these gases do not pose a problem for people inthe vehicle's passenger compartment as they are ventilated away from the vehicle thanks to themair currents that normally occur when the vehicle is moving.
    If, on the other hand, the vehicle is stationary or only moving slowly, one willconcentration of these gases to be in the immediate vicinity of the vehicle.
    There is then a risk that these gases are sucked in by the vehicle's ventilation systemin the vehicle's passenger compartment and where the driver and passengers are exposed to thesegases. There is therefore a need for a solution that prevents the gases whichis released during a regeneration when the vehicle is stationary or moving at lowspeeds penetrate the vehicle's passenger compartment.
    Corresponding problems exist if the engine is designed for marine use oras an industrial engine where there is a passenger compartment adjacent to the engine.
    Summary of the inventionThe object of the invention is to meet the above-mentioned needs. The purpose is achievedby an arrangement according to claim 1 and a method according to claim 9.
    The present need is met by the control unit controllingthe regeneration process in the exhaust system's particulate filter is interconnected withthe control unit that controls the ventilation system of the passenger compartment so thatthe control unit, when the regeneration process is started, stops the supply of air tothe passenger compartment from the surroundings where gases may be presentthe regeneration process. The air intake to the surroundings of the personal space is stopped10152025303either immediately when the regeneration process starts or after a period of timefrom the start of the regeneration process.
    In one embodiment of the arrangement, the engine is arranged in a vehicle, in a boat orin another application where the engine moves or is mobile, the air supply is stoppedto the passenger compartment when the speed of the vehicle or equivalent is less than 10km / h. This embodiment is advantageous then the specified speedensures adequate airflow around the vehicle's passenger compartmentand air intakes are available so that any gases formed during regenerationtransported away or mixed with ambient fresh air.
    In one embodiment of the arrangement, it is adjacent to the particle filterarranged a unit for supplying fuel to the exhaust gases and which upon activationfrom the control unit the regeneration starts. This is an advantageous design forregeneration.
    In one embodiment of the arrangement, the device is for detecting the vehiclespeed of the vehicle speedometer. With this design ofarrangement, the components are reduced by alreadyproduced data and existing components in the vehicle can be used.
    In one embodiment of the arrangement, the ventilation system regulates air fromthe environment of the vehicle shall be added to the passenger compartment or if the air inthe passenger compartment must be circulated without the supply of air from the passenger compartmentenvironment.
    The invention also relates to a vehicle comprising at least one arrangementaccording to any of the embodiments described above.
    The invention also relates to a process for undergoing a regeneration processturn off or at least significantly reduce the supply of air from the environmentto the personal space.10152025304An exemplary embodiment of the invention is described in more detail belowreference to the accompanying drawing.
    Short figure descriptionFig. 1 schematically shows an arrangement according to the invention.
    Detailed description of the inventionlfig. 1 schematically shows an arrangement 10 comprising oneparticle generating device in the form of an internal combustion engine 11, aexhaust system 12 and parts of a ventilation system for supplying fresh air toa passenger compartment 14 in a vehicle 13.
    The internal combustion engine 11 consists, for example, of a multi-cylinder diesel engine whichis used as the drive motor for the vehicle 13. The vehicle in Fig. 1 is shown as a truck13 but the invention can also be used in combination with other types ofparticle generating devices in applications such as buses, trains, boats,trucks, crane trucks etc. Since the figure is only schematic has notsurrounding components of the internal combustion engine such asdevices for fuel supply, etc. are illustrated.
    From the combustion engine 11, the engine's combustion gases (exhaust gases) are led viathe exhaust system 12 out to the surroundings via an exhaust pipe 15 placed in a suitable mannerplace in the vehicle and well spaced from the vehicle's passenger compartment 14 and so onwell spaced from the ventilation system inlet for fresh air, to minimizethe risk of combustion gases being introduced into the passenger compartment. Somewhere alongthe exhaust pipe is a particle filter 16 arranged. The particle filter 16 has the task ofcapture solid particles in the combustion gases and prevent them from being led outto the surroundings. The particles consist of residual products formed duringthe combustion of fuel in the engine's 11 cylinders, and a large part of the particlesconsists of soot particles that are the result of an incomplete combustion. After onetime use, the particle filter 16 is blocked by the trapped particles which10152025305restricts the flow through the filter which adversely affects the performance of the engine 11.
    The particle filter 16 can then be cleaned by so-called regeneration. The filter can afterthe regeneration is used again and has regained its cleansing ability.
    The regeneration of the filter 16 takes place without the need to remove it from itsregular place in the exhaust system 12. Regeneration takes place by fuelis supplied to the exhaust gases so that they have an elevated temperature and / or in another wayhelps to oxidize the particles in the filter. This is done through a specialinjection system arranged upstream of the filter 16. This injection system isnot shown in the figure and is not described in more detail as this in itself constitutes well knowntechnique. Alternatively, and as is also well known technology, the injection can take placethrough the engine's 11 regular fuel injection system through a lateinjection which does not cause any combustion in the engine 11 but where the fuel is conductedon to the exhaust system 12.
    After the engine, the exhaust system 12 comprises a turbocharger 22 with a turbinedriven by the engine 11 exhaust gases to drive a compressor for the engineinlet air. The exhaust system 12 also includes a muffler and canin addition include other components for reducing exhaust emissionssuch as, for example, a hydrolysis catalyst, an SCR catalyst, aoxidation catalyst (DOC) or the like. The description is delimited fromdetailed description of these components as they are not necessary forunderstanding of the present invention.
    The regeneration of the particle filter 16 is controlled by a control unit 18. The control unit 18also regulates the supply of fuel to the exhaust gases and at which predeterminedtime intervals measured and monitored by the control unit 18. Alternatively,the control unit start regeneration when a certain particle level has been reached in the filter throughappropriate detection or measurement of the amount of particles trapped in the filter.
    This can be done by measuring the pressure drop across the filter using thisintended sensors arranged in the exhaust system before and after the filter 16.
    The vehicle 13 comprises a ventilation system which under the influence of acontrol unit 20 is intended to control the air flow to and in the passenger compartment of the vehicle1015202530614. The ventilation system may also include heating / cooling systemsthe air supplied to the passenger compartment 14 and the control unit 20 then control suitablyalso the temperature control of the air to the passenger compartment 14.
    Before, at the same time as, or immediately after the regeneration process in the particulate filter 16is started, the control unit 18 sends a signal to a control unit 20 included inthe vehicle's 13 ventilation system.
    When the control unit 20 receives the signal from the control unit 18 thatthe regeneration process has been activated, the control unit 20 verifies the vehiclespeed. If the vehicle is completely stationary or driven at a speedbelow a predetermined low speed, the control unit 20 stops the intakeof air from the vehicle environment to the passenger compartment 14 to avoid gasesfrom the regeneration process is sucked into the ventilation system and further intothe personal space. Information on the vehicle's 13 speed can either be retrieveddirectly from the vehicle's speedometer, through separate measuring devices or the vehicle'snavigation system. Alternatively, the vehicle speed can be obtained indirectly throughsensing of engine 11 speeds or the like. Information that the vehicle is standingstill can also be indicated by the vehicle's parking brake being activated. Theimportant is that there is a device that can deliver one against the speed of the vehiclerepresentative signal value to the control unit 20 and / or the control unit 18.
    While no air from the surroundings of the vehicle 13 is supplied to the passenger compartment14, it is convenient to let the air in the passenger compartment 14 circulate inthe ventilation system to maintain the desired temperature and purity of the air inthe passenger compartment 14. In other embodiments, it is sufficient to supplythe inlet air is stopped only partially but still to such an extent that itcan be considered substantially stopped. Although there are reasons to turn it off completelythe supply of air during a regeneration process there are other reasons that speakso that a smaller proportion of air can be added to the passenger compartment under oneregeneration process. The important thing is that the supply is essentially switched offby which is meant that at least less is 20% and advantageously less than 10% ofthe air supplied to the passenger compartment comes from the surroundings. In the alternative10152025307embodiments, this can be done depending on the speed of the vehicle so that at onecompletely stationary vehicle 13 the supply of air from the surroundings is switched off andthat then as the speed of the vehicle 13 increases, an increased proportion of air is allowedfrom the environment added to the passenger space 14.
    When the vehicle speed exceeds the predetermined speed, it is resetthe ventilation system so that fresh air is allowed to re-enter the passenger compartment in fullextent, even if regeneration continues. It is then no longer assumedthere are some concentrations of gases from the regeneration nearthe vehicle that risks being taken into the passenger compartment. Of course restoredthe ventilation system even in the event that regeneration ceases.
    The invention has been described above on the basis of some exemplary embodimentswhich of course can be combined in different ways. Instead of shutting down completelyair supply to the passenger compartment 14 during filter regeneration can in alternativeembodiments are at least significantly reduced. Modern vehicles today have in largeto a greater extent more or less automatically controlled ventilation systems and in theseincludes that the air is recirculated in the passenger compartment in certain operating cases, eg toaccelerate that a desired temperature in the passenger compartment can be achieved quickly. INthese cases are similarly prevented by the introduction of air from the environment,or that it is at least substantially prevented. In the case where the vehicle isequipped with such an automatically controlled ventilation system can the connectionbetween the control unit 18 and the control unit 20 is easily done by the sameventilation mode is assumed for air recirculation in the passenger compartment 14 is reached belowa regeneration.
    In other cases, the ventilation system is arranged to be controlled more manually. In these casessuitable valves and dampers can be arranged in the ventilation system so thatcorresponding function is achieved during a regeneration. What is stated asventilation systems in the claims shall thus include the components thatrequired for the intended function to be obtained, regardless of how these inpractices are designed.10152025308In the description example it is described that the regeneration is controlled by a control unit 18,which can be a completely separate control unit but which can alternatively form partof another control unit in the vehicle, eg the engine's ordinary control system.
    The same applies to the control unit 20, which may alternatively form part ofother control unit or control unit.
    The invention has largely described when it is utilized in oneinternal combustion engine driven vehicle. The invention can be applied in an analogous manner withwhat is described even in the case of an industrial engine that is fixedinstalled and where in connection with the engine there is a personal space such asventilated with air from the engine vicinity. In these cases, of course, it is not possible toarranging the control of the ventilation depending on any speed parameter,but in these cases it is only the activation of the regeneration that governsthe ventilation.
    The invention has in some embodiments been described as dependent onthe speed of a vehicle so that it is only at low speeds thatthe air supply is stopped to the passenger compartment. In alternative embodiments cancorresponding function is obtained, for example, by limiting the shut-offto only when certain low gears of the vehicle are engaged instead of utilizing onedirect speed-dependent parameter.
    The invention has further been described with reference to it being ainternal combustion engine that generates the particles to be burned under oneregeneration, but in alternative applications it may be a question of whichparticle generating device of any kind. What is stated in the claims ascombustion engine should thus be considered to include these other devices as well.
    The invention also relates to a method for controlling an arrangement according to whatas described above. In essence, the procedure has already been described inconnection to the event. The invention thus also relates to a methodwhere the control unit (20) sets the ventilation system to a position that switches offor at least substantially reduces the supply of ambient air to a109personal space 14 during a regeneration process of a particulate filter inthe exhaust system.
    According to the description example above, fuel is injected into the exhaust line for the purpose ofregenerate the filter. In alternative embodiments, other known ones can be usedmethods of regeneration which do not involve such fuel injection.
    权利要求:
    Claims (10)
    [1]
    An arrangement for controlling a ventilation system (13) for a passenger space, the ventilation system being arranged for supplying air to a passenger space and comprising a control unit (20) for controlling the ventilation system, the arrangement further comprising an internal combustion engine (11), an exhaust system ( 12) for removing the exhaust gases from the internal combustion engine (11) and which exhaust system comprises a regenerable particle filter (16) and a control unit (18) for activating the regeneration in said filter (16), characterized in that the control unit (18) and the control unit (20) are connected to each other in a manner that enables the control unit (20) to shut down or at least substantially reduce the supply of air from the environment to (13) the passenger space (14) in cases where a regeneration process is activated.
    [2]
    Arrangement according to claim 1, characterized in that the arrangement is arranged in a vehicle.
    [3]
    Arrangement according to claim 2, characterized in that the arrangement also comprises a device for detecting the speed of the vehicle, that the control unit (18), the control unit (20) and the device are connected to each other in a manner which enables the control unit to switch off or at least substantially reduce supply of air from the surroundings to the passenger space (14) of the vehicle (13) in cases where a regeneration process is activated at the same time as the speed of the vehicle (13) is less than a certain predetermined speed.
    [4]
    Arrangement according to claim 2 or 3, characterized in that the air supply to the passenger compartment (14) is stopped or at least reduced when the speed of the vehicle (13) is less than 10 km / h.
    [5]
    Arrangement according to claim 4, characterized in that the air supply to the passenger compartment (14) is stopped or at least reduced when the vehicle (13) is completely stationary. 10 15 20 11
    [6]
    Arrangement according to one of the preceding claims, characterized in that a unit for supplying fuel to the exhaust gases in order to start a regeneration process is arranged in the exhaust system (12) upstream of the particulate filter (16).
    [7]
    Arrangement according to one of Claims 2 to 6, characterized in that the device for detecting the speed of the vehicle (13) consists of the speedometer of the vehicle (13).
    [8]
    Arrangement according to one of the preceding claims, characterized in that the control unit (20) regulates the ventilation system to circulate the air in the passenger compartment (14) during the time of regeneration.
    [9]
    Vehicle (13) comprising an arrangement according to any one of the preceding claims.
    [10]
    1-8, characterized in that during a regeneration process the control unit (20) method for controlling an arrangement according to any one of the claims sets the ventilation system in a position which switches off or at least substantially reduces the supply of air from the surroundings to the passenger space (14).
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    同族专利:
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    CN103153659B|2015-07-29|
    EP2627526A1|2013-08-21|
    BR112013007935A2|2016-06-14|
    SE535231C2|2012-05-29|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE19746903B4|1996-10-25|2006-12-14|Denso Corp., Kariya|Air conditioning for one vehicle|
    DE10333344A1|2003-07-23|2005-02-24|Daimlerchrysler Ag|Control of the fresh air supply to a vehicle interior, whereby if conditions are detected in which exhaust gas could enter the vehicle interior, the fresh air supply is reduced|
    JP3938188B2|2005-05-17|2007-06-27|いすゞ自動車株式会社|Exhaust gas purification system control method and exhaust gas purification system|
    JP2008157099A|2006-12-22|2008-07-10|Mitsubishi Fuso Truck & Bus Corp|Regeneration thermal damage prevention device of dpf device|
    US7587893B2|2007-05-10|2009-09-15|Deere & Company|Particulate filter regeneration system for an internal combustion engine|US10195921B2|2016-06-21|2019-02-05|Nissan North America, Inc.|Vehicle air conditioning system|
    法律状态:
    2021-06-01| NUG| Patent has lapsed|
    优先权:
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    SE1051078A|SE535231C2|2010-10-15|2010-10-15|Arrangement and procedure for controlling a ventilation system|SE1051078A| SE535231C2|2010-10-15|2010-10-15|Arrangement and procedure for controlling a ventilation system|
    PCT/SE2011/051173| WO2012050508A1|2010-10-15|2011-10-03|Arrangement and method for controlling a ventilation system|
    CN201180049350.1A| CN103153659B|2010-10-15|2011-10-03|For controlling equipment and the method for ventilation system|
    EP11832835.0A| EP2627526B1|2010-10-15|2011-10-03|Arrangement and method for controlling a ventilation system|
    BR112013007935A| BR112013007935A2|2010-10-15|2011-10-03|arrangement and method for controlling a ventilation system|
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