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1. WO2020133355 - GAS MIXER

Publication Number WO/2020/133355
Publication Date 02.07.2020
International Application No. PCT/CN2018/125355
International Filing Date 29.12.2018
IPC
F02M 21/04 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
21Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
02for gaseous fuels
04Gas-air mixing apparatus
F02M 26/19 2016.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
26Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation systems
13Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
17in relation to the intake system
19Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system
F02M 26/17 2016.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
26Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation systems
13Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
17in relation to the intake system
CPC
F02M 21/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
21Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
02for gaseous fuels
04Gas-air mixing apparatus
F02M 26/17
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
26Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
13Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
17in relation to the intake system
F02M 26/19
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
26Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
13Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
17in relation to the intake system
19Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system
Y02T 10/30
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
10Road transport of goods or passengers
10Internal combustion engine [ICE] based vehicles
30Use of alternative fuels, e.g. biofuels
Applicants
  • 潍柴动力股份有限公司 WEICHAI POWER CO., LTD [CN]/[CN]
Inventors
  • 李卫 LI, Wei
  • 潘洁 PAN, Jie
  • 孙洲律 SUN, Zhoulv
  • 陈静 CHEN, Jing
Agents
  • 北京集佳知识产权代理有限公司 UNITALEN ATTORNEYS AT LAW
Priority Data
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) GAS MIXER
(FR) MÉLANGEUR DE GAZ
(ZH) 一种气体混合器
Abstract
(EN)
A gas mixer, comprising a mixer housing (1) and a mixer core (2). The mixer core (2) comprises a fuel gas core (21) and an EGR core (22); the fuel gas core (21) is internally provided with two fuel gas injection tubes (3) which intersect, and four EGR injection tubes (4, 5) are provided in the EGR core (22) and form a Swiss cross-shaped intersecting EGR mixing core. The fuel gas mixing core structure and the EGR mixing core structure of the gas mixer are both designed as a Swiss cross-shaped intersecting combined formation, so that both fuel gas and EGR exhaust gas may be ejected from multiple injection holes of a radial injection pipe and fill the cross section of the mixer core (2), which further improves the uniformity of the fuel gas and EGR exhaust gas entering the mixer core, and combines relatively low pressure loss with relatively high working reliability. Meanwhile, the sensitivity of a mixing effect of the mixer guiding downstream pipelines is reduced.
(FR)
L'invention concerne un mélangeur de gaz, comprenant un boîtier de mélangeur (1) et un cœur de mélangeur (2). Le cœur de mélangeur (2) comprend un cœur de gaz combustible (21) et un cœur de RGE (22); le cœur de gaz combustible (21) comporte, à l'intérieur, deux tubes d'injection de gaz combustible (3) qui se croisent, et quatre tubes d'injection de RGE (4, 5) sont mis en œuvre dans le cœur de RGE (22) et forment un cœur de mélange de RGE croisé en forme de croix suisse. La structure du cœur de mélange de gaz combustible et la structure du cœur de mélange de RGE du mélangeur de gaz sont toutes les deux conçues sous la forme d'une formation combinée d'intersection en forme de croix suisse, de telle sorte que le gaz combustible et le gaz d'échappement de RGE peuvent être éjectés en provenance de multiples trous d'injection d'un tuyau d'injection radial et remplir la section transversale du cœur mélangeur (2), ce qui améliore en outre l'uniformité du gaz combustible et du gaz d'échappement de RGE entrant dans le cœur mélangeur, et combine une perte de pression relativement faible avec une fiabilité de travail relativement élevée. Pendant ce temps, la sensibilité d'un effet de mélange du mélangeur guidant les pipelines en aval est réduite.
(ZH)
一种气体混合器,包括混合器外壳(1)和混合器芯体(2),混合器芯体(2)包括燃气芯体(21)和EGR芯体(22),燃气芯体(21)内设置有两个交错布置的燃气喷射管(3),EGR芯体(22)内设置有四个EGR喷射管(4,5)并形成十字交叉的EGR混合芯。将气体混合器的燃气混合芯结构和EGR混合芯结构均设计为十字交叉的组合形式,从而使得燃气和EGR废气均能够从径向喷射管的多个喷射孔中喷出并充满混合器芯体(2)的截面,进而改善进入混合器芯体的燃气以及EGR废气的均匀程度,兼具较低的压力损失以及较高的工作可靠性,同时,还能够降低混合器的混合效果对下游管路导向的敏感度。
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