US20130071268A1 - Pump structure for urea scr system - Google Patents

Pump structure for urea scr system Download PDF

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Publication number
US20130071268A1
US20130071268A1 US13/316,339 US201113316339A US2013071268A1 US 20130071268 A1 US20130071268 A1 US 20130071268A1 US 201113316339 A US201113316339 A US 201113316339A US 2013071268 A1 US2013071268 A1 US 2013071268A1
Authority
US
United States
Prior art keywords
pump
urea
scr system
pump unit
motor
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.)
Abandoned
Application number
US13/316,339
Other languages
English (en)
Inventor
Dong Myoung RYOO
Buyeol Ryu
Chang Ho Ham
Bo sung Lee
Pil Seon Choi
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.)
Hyundai Motor Co
Kia Corp
Original Assignee
Hyundai Motor Co
Kia Motors Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hyundai Motor Co, Kia Motors Corp filed Critical Hyundai Motor Co
Assigned to HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION reassignment HYUNDAI MOTOR COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHOI, PIL SEON, HAM, CHANG HO, LEE, BO SUNG, RYOO, DONG MYOUNG, RYU, BUYEOL
Publication of US20130071268A1 publication Critical patent/US20130071268A1/en
Abandoned 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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/10—Fluid working
    • F04C2210/1083—Urea

Definitions

  • the present invention relates to a pump structure for a UREA SCR system, and more particularly to a pump structure for a UREA SCR system that effectively prevents a leak of the urea solution to protect the motor portion thereof.
  • Vehicles are divided into passenger vehicles, buses, and trucks according to a type thereof, and they can be further divided into gasoline vehicles that use gasoline, diesel vehicles that use diesel, and LPG vehicles that use liquefied petroleum gas according to the type fuel used.
  • a diesel engine combusts fuel in an oxygen surplus condition to generate a large amount of NOx as a harmful material compared to a gasoline engine, and it is difficult to reduce the NOx in the lean condition of the diesel engine. Accordingly, a urea selective catalytic reduction (urea-SCR) system is an art that has been most actively developed as a NOx elimination method.
  • urea-SCR urea selective catalytic reduction
  • the urea-SCR system supplies a urea (NH 2 -CO-NH 2 ) solution to an exhaust gas line, the urea solution is resolved by high temperature exhaust gas to be transformed to NH 3 and HNCO, and the HNCO is discomposed by water of the exhaust gas to be transformed into ammonia and CO2.
  • the ammonia that is generated as stated above is used to transform NOx into N 2 +O 2 through a catalytic reaction.
  • the urea-SCR system includes an injector that injects the urea solution, a pump that supplies the urea solution from a urea tank to the injector, and a CPU that controls injection pressure and injection time.
  • a pump such as a gasoline fuel pump and a diesel fuel pump that is used in a general vehicle engine so as to supply the urea solution. Because the urea solution is strongly alkaline at pH 9-11 to have strong corrosion ability, the urea solution corrodes most metals except for an SUS material. When a general fuel pump is used to pump the urea solution, the pump corrodes and consequently malfunctions after four to six hours.
  • a special urea supply pump is used to eliminate the corrosion problem in a conventional art. That is, a pump portion 2 of a urea supply pump is disposed in a tank 4 , a motor portion 1 is disposed outside the tank and separated from the outside wall of the tank, and the pump is rotated by a magnetic coupling 3 having plurality of magnets in the upper/lower portion thereof to prevent corrosion of the pump.
  • Various aspects of the present invention provide for a pump structure for a urea-SCR system having advantages of using a fuel pump that is used in a vehicle engine to save production cost, reduce noise, and simultaneously prevent corrosion caused by a urea solution.
  • a pump structure for a urea-SCR system as a means for resolving the above problem is provided in various aspects of the present invention.
  • a pump unit for a urea-SCR system that uses a fuel pump for a vehicle engine having a case portion surrounding a motor portion and a pump portion according to various aspects of the present invention, wherein the motor portion includes a barrier wall surrounding a rotator so as to separate the rotator from a stator of the motor portion, and the pump portion includes a shield in which a suction hole and a supply hole for fluid are formed and that is disposed between the pump portion and the motor portion so as to prevent fluid from leaking into the motor portion.
  • the barrier wall may be made of corrosion prevention material including an SUS material.
  • the pump portion may be made up of one of an inscribed gear pump, a circumscribed gear pump, and a gerotor pump.
  • a center hole may be formed in the shield, and a shaft of the fuel pump penetrates the center hole to connect to the motor portion.
  • a bearing may be disposed between the shaft and the center hole and between the shaft and the barrier wall.
  • An O-ring may be disposed between the bearing and the shield so as to prevent leakage of the fluid.
  • the case portion may include a main case surrounding a side surface of the motor portion and the pump portion and an upper case covering an upper portion of the motor portion.
  • the barrier wall may be integrally formed with the main case.
  • the barrier wall may have a cylindrical shape of which the upper portion thereof is closed, and a flange is formed at a lower portion of the barrier wall, wherein the barrier wall is engaged with a circular end portion that is formed along an interior circumference of the main case through the flange.
  • a groove may be formed at an upper surface of the end portion so as to prevent the fluid from leaking between the end portion and the flange, and an O-ring is inserted into the groove.
  • the motor portion may be a brushless direct current (BLDC) motor.
  • BLDC brushless direct current
  • the pump unit for a urea-SCR system may further include a cover surrounding an exterior circumference of the rotator so as to prevent corrosion of the rotator.
  • the cover may be formed by over-molding a plastic material.
  • the shield divides the pump portion and the motor portion, the suction hole and the supply hole are both formed in the pump portion, and therefore there is an effect that the urea solution of the urea-SCR system does not flow into the motor portion to prevent corrosion of the motor portion.
  • the stator is protected from the corrosion by the barrier wall that separates the stator from the rotator of the motor portion, and the cover surrounding the exterior circumference, which is formed by the plastic over-molding, protects the rotator from the urea solution.
  • FIG. 1 is a drawing showing a urea supply pump structure according to a conventional art.
  • FIG. 2 is an exploded perspective view of a pump structure for an exemplary urea-SCR system according to the present invention.
  • FIG. 3 is a cross-sectional view of a pump structure for an exemplary urea-SCR system according to the present invention.
  • FIG. 4 is a drawing showing an exemplary procedure for covering a rotator exterior circumference according to the present invention.
  • FIG. 5 is a cross-sectional view of an exemplary pump structure in which a barrier wall is integrally formed with a main case according to the present invention.
  • FIG. 6 is an exploded perspective view of a pump structure for an exemplary urea-SCR system to which a gerotor pump is applied according to the present invention.
  • a pump structure of a urea-SCR system uses a fuel pump for a vehicle engine including a motor portion 100 , a pump portion 200 , and a case portion 300 .
  • the motor portion 100 includes a shaft 110 , a rotator 120 , a stator 130 , and a barrier wall 140
  • the pump portion 200 includes a suction hole 210 , a supply hole 220 , and a shield 230
  • the case portion 300 includes a main case 310 and an upper case 320 .
  • the structure of the motor portion 100 can use a brushless direct current electric (BLDC) motor that is used in a general vehicle engine in accordance with various embodiments of the present invention.
  • BLDC brushless direct current electric
  • the BLDC motor includes the shaft 110 , the rotator 120 that is engaged with an exterior circumference of the shaft 110 , and the stator 130 that generates an induced electromotive force for rotating the rotator 120 .
  • the rotator 120 is rotatably disposed on the stator 130 to be separate from the stator 130 .
  • the rotator 120 includes a rotor (e.g., iron coil) 121 that is fixed on an exterior circumference of the shaft 110 and a permanent magnet 122 that is disposed at the outside or the inside of the rotor 121
  • the stator 130 includes a coil 131 that generates an induced electromotive force and a stator core 132 that is inserted into the coil 131
  • insulators 133 A and 133 B are respectively disposed at a lower portion and an upper portion of the stator 130 to insulate electricity or heat.
  • the rotator 120 is spatially separated from the stator 130 by the barrier wall 140 .
  • the barrier wall 140 surrounds the rotator 120 so as to separate the rotator 120 of the motor portion 100 from the stator 130 of the motor portion 100 .
  • the rotator 120 is affected by the urea solution but the stator 130 is not affected thereby because of the barrier wall 140 .
  • the coil 131 that is an essential component of the motor, the stator 130 including the stator core 132 , electric wires, and the electrode are protected from the urea solution by the barrier wall 140 .
  • the barrier wall 140 is to be made of a corrosion prevention material, and in various embodiments, the material can be made of an SUS material.
  • the shape of the barrier wall 140 can be variously formed, but as shown in FIG. 2 and FIG. 3 , the barrier wall in accordance with various embodiments has a cylindrical shape of which the upper portion thereof is closed, a flange 141 is formed at a lower portion thereof, and the flange 141 is engaged with an end portion 311 that is formed along an interior circumference of the main case 310 through a bolt 142 .
  • a groove 311 a is formed on an upper surface of the end portion 311 and an O-ring 20 a is inserted therein such that the fluid cannot leak between the end portion 311 and the flange 141 so as to protect the stator 130 from the urea solution.
  • a cover 123 that is made of the SUS material can be prepared to prevent the corrosion of the rotator 120 caused by the urea solution.
  • the cover 123 has a cylindrical shape on which the upper portion and the lower portion are closed to surround an exterior circumference of the rotator 120 , wherein the cover 123 is made by an over-molding plastic material to prevent the corrosion of the rotator 120 .
  • FIG. 4 shows a formation process of the cover 123 of the rotator 120 , wherein the shaft 110 is engaged with the rotor 121 of the rotator 120 , the permanent magnet 122 is inserted into the cover 123 , and the upper surface is covered by the cover 123 to wrap the exterior circumference of the rotator 120 .
  • the magnet 122 may be an SPM type that is attached to the outside of the rotor 121 , and if the magnet 122 is an IPM type that is inserted into the rotor 121 , the cover 123 is formed on the exterior circumference of the rotator 120 .
  • the barrier wall 140 can be integrally formed with the main case 310 .
  • the barrier wall may be monolithically formed with the main case.
  • the flange 141 of the barrier wall 140 is not engaged with the end portion 311 of the main case 310 through the bolt 142 , but rather is integrally formed with the end portion 311 . Accordingly, there is an effect of preventing leakage of the urea solution compared to the case of FIG. 2 in which the barrier wall 140 is engaged with the main case 310 through the bolt 142 .
  • a bearing 10 a it is desirable for a bearing 10 a to be disposed between the rotator 120 and the barrier wall 140 such that the rotator 120 rotates effectively.
  • a pump for a general vehicle engine can be used.
  • an impeller type of pump for a gasoline engine is inappropriate for the high viscosity urea solution, and therefore it is desirable that a rotary pump is used.
  • a rotary type of pump an inscribed gear pump, a circumscribed gear pump, or a gerotor pump can be used.
  • FIG. 2 shows a case that a gear pump 240 is used in accordance with various embodiments
  • FIG. 6 shows a case that a gerotor pump 240 is used instead of the gear pump, wherein the other configurations are similar to those of FIG. 2 .
  • the pump portion 200 includes the suction hole 210 and the supply hole 220 for fluid according to various embodiments of the present invention. This is different from a structure of a fuel pump for a vehicle engine, but because the suctioned fuel that is sucked by a fuel suction portion of a lower portion thereof is pumped by pump rotation and is supplied to a motor portion thereof to be discharged through a fuel discharge portion in case of a fuel pump for a vehicle engine like a general BLDC pump, if this pump structure is used for the urea-SCR system as it is, there is a problem that the motor that is made of copper or steel corrodes during pumping of the urea solution.
  • the fluid suction hole 210 and the supply hole 220 are formed in the pump portion 200 that is disposed in the motor portion 100 so as to resolve this problem in the present invention.
  • the urea solution that is sucked through the suction hole 210 does not pass the motor portion 100 to be discharged through the supply hole 220 such that the motor portion 100 is protected from the urea solution.
  • FIG. 2 shows that the fluid suction hole 210 and the supply hole 220 are formed together in a case that the pump 240 according to various embodiments of the present invention is a gear pump type
  • FIG. 6 shows that the fluid suction hole 210 and the supply hole 220 are formed together in a case that the pump 240 according to various embodiments of the present invention is a gerotor pump.
  • the shield 230 is disposed between the pump portion 200 and the motor portion 100 so as to prevent the fluid from leaking into the motor portion 100 .
  • the shaft 110 that connects the pump portion 200 with the motor portion 100 penetrates a center hole that is formed in the shield 230 , and therefore the fluid can leak between the center hole and the shaft 110 .
  • a bearing 10 b is disposed between the shaft 110 and the center hole of the shield 230 such that the fluid (e.g., urea solution) cannot leak into the motor portion 100 disposed in an upper side according to various embodiments of the present invention.
  • the shield 230 is made of the SUS material that does not corrode by the urea solution.
  • an O-ring 20 b is disposed between the bearing 10 b and the shield 230 to improve the leak prevention effect of the urea solution
  • O-ring 20 c is disposed at a lower portion of the shield 230 to prevent the leakage of the fluid of the pump portion 200 .
  • the case portion 300 includes the main case 310 that surrounds the side surface of the motor portion 100 and the pump portion 200 and the upper case 320 that covers the upper portion of the motor portion 100 , and as shown in FIG. 3 , the main case 310 and the upper case 320 or the main case 310 and the pump portion 200 are engaged by caulking or another assembly means.
  • the pump structure for the urea-SCR system of the present invention as described above can use most parts of the pump for a vehicle engine, the production cost is reduced, complicated structures are not necessary, and noise caused by pulsation and vibration of the fluid is reduced.
  • the pump portion 200 is divided from the motor portion 100 through the shield 230 , and the fluid suction hole 210 and the supply hole 220 are both formed in the pump portion 200 such that the urea solution of the urea-SCR system cannot flow into the motor portion 100 such that the corrosion of the motor portion 100 is prevented.
  • the stator 130 is protected from the corrosion by the barrier wall 140 that separates the rotator 120 from the stator 130 of the motor portion 100 , and the rotator 120 has the cover 123 that is over-molded by the plastic material to surround the exterior circumference thereof to be protected from the leaked urea solution.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Motor Or Generator Frames (AREA)
US13/316,339 2011-09-20 2011-12-09 Pump structure for urea scr system Abandoned US20130071268A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2011-0094788 2011-09-20
KR1020110094788A KR101220393B1 (ko) 2011-09-20 2011-09-20 유레아 에스씨알 시스템용 펌프 구조

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US20130071268A1 true US20130071268A1 (en) 2013-03-21

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US13/316,339 Abandoned US20130071268A1 (en) 2011-09-20 2011-12-09 Pump structure for urea scr system

Country Status (4)

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US (1) US20130071268A1 (ko)
KR (1) KR101220393B1 (ko)
CN (1) CN103016338A (ko)
DE (1) DE102011057082A1 (ko)

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CN104405479A (zh) * 2014-11-14 2015-03-11 天纳克（苏州）排放系统有限公司 流体输送装置
WO2017144499A1 (de) * 2016-02-22 2017-08-31 Gkn Sinter Metals Engineering Gmbh Pumpenanordnung mit axialfluss-elektroantrieb
US20170350297A1 (en) * 2016-06-02 2017-12-07 Röchling Automotive SE & Co. KG Operating Liquid Tank With Pump Assembly Of Multi-Part Construction
WO2017220475A1 (fr) 2016-06-20 2017-12-28 Sonceboz Automotive Sa Pompe a fluide motorisée a réchauffement amélioré
WO2022029145A1 (de) * 2020-08-04 2022-02-10 Vitesco Technologies Germany Gmbh Montagestruktur für eine elektrische ölpumpe

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KR101393545B1 (ko) 2012-08-07 2014-05-09 현대자동차 주식회사 요소수 펌프유닛
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KR101726866B1 (ko) * 2016-01-26 2017-04-27 현담산업 주식회사 펌프 모듈
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US20190368401A1 (en) * 2017-01-20 2019-12-05 Tenneco (Suzhou) Emission System Co., Ltd. Integrated apparatus, exhaust gas post-processing system, and control method
CN108625945A (zh) * 2017-03-20 2018-10-09 天纳克（苏州）排放系统有限公司 尾气后处理系统
CN207598324U (zh) * 2017-03-20 2018-07-10 天纳克（苏州）排放系统有限公司 集成装置及其尾气后处理系统
WO2018171217A1 (zh) * 2017-03-20 2018-09-27 天纳克（苏州）排放系统有限公司 集成装置、尾气后处理系统以及控制方法
WO2018171218A1 (zh) * 2017-03-20 2018-09-27 天纳克（苏州）排放系统有限公司 集成装置、尾气后处理系统以及控制方法
CN207598325U (zh) * 2017-03-20 2018-07-10 天纳克（苏州）排放系统有限公司 尾气后处理系统
CN207620879U (zh) * 2017-03-20 2018-07-17 天纳克（苏州）排放系统有限公司 尾气后处理系统
JP6850000B2 (ja) * 2017-05-18 2021-03-31 株式会社ササクラ ルーツブロワの防食方法
CN111465762B (zh) * 2017-12-13 2022-06-07 罗伯特·博世有限公司 用于将燃料、优选柴油燃料供给到内燃机的泵送单元
FR3096738B1 (fr) * 2019-05-31 2021-05-28 Plastic Omnium Advanced Innovation & Res Dispositif de fixation pour module de distribution de solution aqueuse contenue dans un réservoir à bord d’un véhicule automobile
KR20230107007A (ko) 2022-01-07 2023-07-14 현대자동차주식회사 요소수 믹싱 터보 차저 및 차량 배기계

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