CN101027473A - 用于内燃机涡轮增压器系统的管路 - Google Patents

用于内燃机涡轮增压器系统的管路 Download PDF

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CN101027473A
CN101027473A CNA2004800440468A CN200480044046A CN101027473A CN 101027473 A CN101027473 A CN 101027473A CN A2004800440468 A CNA2004800440468 A CN A2004800440468A CN 200480044046 A CN200480044046 A CN 200480044046A CN 101027473 A CN101027473 A CN 101027473A
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tube section
bent tube
pipeline
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compressor
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约纳斯·奥古斯丁松
塞巴斯蒂安·克劳舍
马格努斯·伊辛
佩尔·安德松
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Volvo Truck Corp
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10Air intakes; Induction systems
    • F02M35/10091Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10118Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements with variable cross-sections of intake ducts along their length; Venturis; Diffusers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B33/00Engines characterised by provision of pumps for charging or scavenging
    • F02B33/44Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/004Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust drives arranged in series
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/013Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust-driven pumps arranged in series
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/02Gas passages between engine outlet and pump drive, e.g. reservoirs
    • F02B37/025Multiple scrolls or multiple gas passages guiding the gas to the pump drive
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10Air intakes; Induction systems
    • F02M35/10091Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10144Connections of intake ducts to each other or to another device
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10Air intakes; Induction systems
    • F02M35/1015Air intakes; Induction systems characterised by the engine type
    • F02M35/10157Supercharged engines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08Other arrangements or adaptations of exhaust conduits
    • F01N13/10Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F01N13/107More than one exhaust manifold or exhaust collector
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04Cooling of air intake supply
    • F02B29/0406Layout of the intake air cooling or coolant circuit
    • F02B29/0412Multiple heat exchangers arranged in parallel or in series
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/16Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
    • F02M35/164Heavy duty vehicles, e.g. trucks, trains, agricultural or construction machines
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving 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)
  • Supercharger (AREA)

Abstract

本发明涉及一种用于内燃机的涡轮增压器系统的管路(28),其具有至少一根排气管路和至少一根进气管路,所述排气管路用于将来自发动机的燃烧室的排出废气排至涡轮增压器系统,所述进气管路用于供应空气至所述燃烧室。所述涡轮增压器系统包括至少一个涡轮,其与至少一个压缩机协同工作,以从发动机的废气流中提取能量,并且对发动机的进入空气进行增压。为了获得具有低压力损失的紧凑安装结构,进气管路(28)连接压缩机(19)的出口(31)的弯管部分(33),所述弯管部分(33)的至少一部分具有非圆形的横截面。扩压器(32)设置在所述弯管部分的下游,且其与所述弯管部分的距离小于五倍管径。

Description

用于内燃机涡轮增压器系统的管路
技术领域
本发明涉及一种用于内燃机涡轮增压器系统的管路,该管路具有至少一根排气管路和至少一根进气管路,所述排气管路用于将来自发动机燃烧室的排出废气排至涡轮增压器系统,所述进气管路用于供应空气至所述燃烧室,所述涡轮增压器系统包括至少一个涡轮,其与至少一个压缩机协同工作,以从发动机的废气流中提取能量,并且对发动机的进入空气进行增压。
背景技术
在现有技术中,对于为柴油内燃机(特别是用于重型车辆的内燃机)增压的涡轮增压器系统而言,其通常包括由单级涡轮驱动的单级压缩机,且压缩机和涡轮都为径流式。现有技术中还有具有二级增压的涡轮增压器系统,有时还包括中间冷却,但是,这样的安装通常占据较大的空间。因此这类技术方案难以应用于空间严格受限的机动车辆。环保方面的要求通常意味着发动机室内的安装空间此外还会受到用于废气再处理设备的影响,例如,用于将冷却的、来自排气侧的排出废气再循环至进气侧的废气再循环(EGR)系统。对发动机的效率更高的要求也可能需要增加冷却系统容量,这需要占据发动机周围更多的空间。因此,一个很大的问题就是:在发动机和涡轮增压器系统之间配置管路,使得管路的压力损失最小。如果此问题不能被完全解决,那么将存在这样的风险,即,使用二级增压所带来的好处将会被由安装结构引起的压力损失所抵消。
发明内容
因此,本发明的目的是提供一种具有低压力损失的管路,其有利于安装用于内燃机的涡轮增压器系统。
根据本发明,提出为实现上述目的、用于内燃机涡轮增压器系统的管路,所述管路具有至少一根排气管路和至少一根进气管路,所述排气管路用于将来自发动机的燃烧室的排出废气排至涡轮增压器系统,所述进气管路用于供应空气至所述燃烧室,所述涡轮增压器系统包括至少一个涡轮,其与至少一个压缩机协同工作,以从发动机的废气流中提取能量,并且对发动机的进入空气进行增压,其特征在于:进气管路通过弯管部分连接到压缩机的出口,所述弯管部分的至少一部分具有非圆形的横截面,并且,扩压器设置在所述弯管部分的下游,且距离所述弯管部分的距离小于五倍管径。由于采用此种结构,所述管路能够以节约空间、紧凑的方式且急弯方式从压缩机延伸到设置在车辆前端的充气冷却器,而对管路压力的下降没有任何显著的增加。
可以从本专利申请的独立权利要求得出本发明有利的示例性实施例。
附图说明
本发明将参照附图中所示出的示例性实施例对本发明进行详细描述,其中:
图1示出了内燃机的示意图,所述内燃机具有二级涡轮增压器系统,
图2示出了根据本发明的管路的透视图,和
图3示出了图2中所示管路的平面图。
具体实施方式
本发明被描述为主要用于柴油发动机的二级增压系统,所述柴油发动机的排量大约在6到20升之间,其特别是用于诸如卡车、公共汽车和建筑机械的重型车辆。增压系统的一个特征是,与现有系统相比,其具有更显著的增压效果。所述增压通过具有两个串联的径流式压缩机的两级机构并经过中间冷却而得以实现。第一级压缩机称为低压压缩机,其由轴流式低压涡轮机驱动。第二级压气机称为高压压缩机,其由径流式高压涡轮驱动。
图1示出了发动机组10,其包括六个发动机气缸11,按照惯例,其与进气歧管12和两个分立的排气歧管13,14连通。这两个排气歧管中的每一个都接收来自三个发动机气缸的排出废气。通过连接至高压涡轮装置18内的涡轮17的分立管路15,16,从而对排出废气进行引导,所述高压涡轮装置18包括与涡轮17同轴安装的压缩机19。
排出废气通过管路20向前引导至位于低压涡轮装置22内的涡轮21,所述低压涡轮装置22包括与涡轮21同轴安装的压缩机23。排出废气最终通过管路24向前引导至发动机的排气系统,所述排气系统包括用于对排出废气进行再处理的装置。
过滤后的进入空气通过管路25进入发动机,并且被引导至低压涡轮装置22的压缩机23。通过第一充气冷却器27,管路26将进入空气向前引导至高压涡轮装置18的压缩机19。经过该具有中间冷却的二级增压机构之后,进入空气通过管路28被向前引导至第二充气冷却器29,其后,进入空气通过管路30到达进气歧管12。
图2以较大比例示出了管路28,在其右边,示出了来自压缩机19的锥形扩压器出口31。为了限制压缩机管路下游的压力损失,扩压器32被设置在弯管部分33的下游。在流动方向上,扩压器32被适当地呈圆锥形加大,而非标准配置。
由于此示例性实施例中的弯管部分33所弯曲的角度大约为90度,具有较小的曲率半径,因此可以便于对管路28进行节省空间的安装。通常,对于静态压力增加或压力下降,设置在弯管部分下游的扩压器的性能在很大程度上受到空气流速曲线的质量的影响,所述质量表征通过所述弯管部分的气流的均匀程度。根据本发明,在扩压器的上游,弯管部分的横截面为非圆形结构,这改进了气流质量。有利地,弯管部分在此处被压成这样的方式,即气流获得更一致的弯曲半径,与此同时,横截面积大致不变。此处,弯管部分的压缩应当通过这样的方式实现:与一个圆形截面的相应弯管部分相比较而言,最短流动线的长度增长,即,流体微粒能够流动的最短路径增长。有利地,弯管部分33被设置成与所谓的NACA弯相一致,例如,参见NACA TN2736,1952年6月,该文档示出了通过弯管时的二维流动情况。
有利地,扩压器33被设置在弯管部分的下游、处于距弯管部分的最大距离为五倍管径的范围内。实际上,可以有利地将扩压器设置成距弯管部分的最大距离为两倍管径,或者是,有利地将其设置成靠近弯管部分,以减少管路的长度。
不应当认为本发明仅仅限于如上所述的示例性实施例,应当认为,本发明包括在所附权利要求的范围内可以预想到的多种变型与改进。例如,管路26可以设置成相应的具有下游扩压器的弯管部分。另外,管路28可以设置成具有一个以上的扩压器和一个以上的弯管部分33,所述弯管部分可以自由选择弯曲角度。另外,在弯管部分33之前可以设置锥形扩压器。

Claims (9)

1.一种用于内燃机(10)涡轮增压器系统(18)的管路(28),其具有至少一根排气管路(15,16)和至少一根进气管路(12,28,30),所述排气管路用于将来自发动机燃烧室(11)的排出废气排至涡轮增压器系统,所述进气管路(12,28,30)用于供应空气至所述燃烧室,所述涡轮增压器系统包括至少一个涡轮(17;21),其与至少一个压缩机(19;23)协同工作,以从发动机的废气流中提取能量,并且对发动机的进入空气进行增压,其特征在于:进气管路(12,28,30)与压缩机(19)的出口(31)的弯管部分(33)相连接,所述弯管部分(33)的至少一部分具有非圆形的横截面,并且扩压器(32)设置在所述弯管部分的下游,其与所述弯管部分的距离小于五倍管径。
2.如权利要求1所述的管路,其特征在于:以这样的方式对弯管部分(33)进行挤压:与一个圆形截面的相应弯管部分相比较而言,最短流动线的长度增加,即流体微粒能够流动的最短路径长度增加。
3.如权利要求2所述的管路,其特征在于:以这样的方式对弯管部分(33)进行挤压:从圆形截面部分的对应弯管部分的曲率中心到横截面区域的重心之间的距离逐渐增加,并且随后逐渐减小。
4.如权利要求1至3中任何一项所述的管路,其特征在于:扩压器(32)设置在弯管部分的下游,且其与弯管部分的距离小于两倍管径。
5.如权利要求1至3中任何一项所述的管路,其特征在于:扩压器(32)设置在弯管部分的下游,且其与弯管部分的距离小于一倍管径。
6.如权利要求1至5中任何一项所述的管路,其特征在于:所述弯管部分的前面设置扩压器。
7.如权利要求1至6中任何一项所述的管路,其特征在于:所述涡轮增压器用于具有二级增压的涡轮增压器系统,其中压缩机和涡轮串联设置。
8.如权利要求1至7中任何一项所述的管路,其特征在于:所述内燃机(10)为柴油机。
9.如权利要求8所述的管路,其特征在于:内燃机(10)安装于重载车辆内。
CNA2004800440468A 2004-09-21 2004-09-21 用于内燃机涡轮增压器系统的管路 Pending CN101027473A (zh)

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