WO2002014561A1 - Amortisseur de bruit de moteur servant a reguler la contre-pression et la fuite des gaz - Google Patents

Amortisseur de bruit de moteur servant a reguler la contre-pression et la fuite des gaz Download PDF

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Publication number
WO2002014561A1
WO2002014561A1 PCT/CN2000/000243 CN0000243W WO0214561A1 WO 2002014561 A1 WO2002014561 A1 WO 2002014561A1 CN 0000243 W CN0000243 W CN 0000243W WO 0214561 A1 WO0214561 A1 WO 0214561A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust
tube
engine
back pressure
wall
Prior art date
Application number
PCT/CN2000/000243
Other languages
English (en)
Chinese (zh)
Inventor
Jefferson Liu
Original Assignee
Jefferson Liu
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 Jefferson Liu filed Critical Jefferson Liu
Priority to CN00819813.6A priority Critical patent/CN1454286A/zh
Priority to GB0303498A priority patent/GB2383091A/en
Priority to AU2000265542A priority patent/AU2000265542A1/en
Priority to PCT/CN2000/000243 priority patent/WO2002014561A1/fr
Publication of WO2002014561A1 publication Critical patent/WO2002014561A1/fr

Links

Classifications

    • 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/003—Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/02—Tubes being perforated

Definitions

  • the present invention relates to a muffler for an engine that enhances back pressure and leakage, and in particular cooperates with the timing operation of the engine's valve to generate a large amount of back pressure in the time before the piston reaches the bottom dead center after the exhaust valve is opened to resist exhaust A large amount of gas leaks after the gas valve is opened, so that the engine's expansion stroke can fully operate. And when the piston enters the exhaust stroke, its internal resistance is reduced to achieve a sufficient exhaust, but also has the purpose of better muffler for engine muffler. Background technique
  • the purpose of the present invention is to provide a muffler for an engine that enhances back pressure and leakage, and makes it cooperate with the engine's valve to operate at a regular time, and generates a large number of times before the piston reaches the bottom dead center after the exhaust valve is opened. Pressure to resist the exhaust of a large amount of gas after the exhaust valve is opened, so that the engine's expansion stroke can fully operate, and when the piston enters the exhaust stroke, its internal resistance is reduced to achieve the effect of full exhaust; and it has a better silence Role, and the structure is more streamlined.
  • the present invention is designed to improve the shortcomings of low engine efficiency and poor exhaust effect due to the large amount of gas leakage after the exhaust valve is opened in the existing engine design. It includes an outer tube, an inner tube is axially penetrated in the outer tube, the inner tube wall has a plurality of small holes, the inner tube has a plurality of shrinkable tubes spaced apart at an appropriate distance, the inner wall of the outer tube and the outer wall of the inner tube There are multiple partitions in between, and there are multiple small holes on the partitions, which are used to make the exhaust gas flow from one end of the inner tube through the shrink tubes to accelerate the airflow, and cooperate with the engine's valve timing operation, and After the door is opened, a large amount of back pressure is generated in the time before the piston reaches the bottom dead center, which prevents a large amount of gas from leaking after the exhaust valve is opened, so that the engine expansion stroke can fully operate.
  • FIG. 1 is a sectional view of a three-dimensional structure of a muffler of the present invention
  • FIG. 2 is a schematic diagram of an exhaust condition of an inner pipe in a muffler of the present invention
  • Fig. 3 is a schematic diagram of a valve timing of the muffler of the present invention. The best way to implement the invention
  • Fig. 1 is a sectional view showing a three-dimensional structure of a muffler for an engine for enhancing back pressure and leakage of the present invention.
  • the structure for forming the muffler 1 is provided with an inner tube 12 axially penetrated in an outer tube 11, and the inner wall of the outer tube 11 and the outer wall of the inner tube 12 are closed; the inner tube There are a plurality of small holes 120 on the wall of 12 and there are a plurality of shrinkable tubes spaced at an appropriate distance inside the inner tube 12 (the embodiment of the present invention includes a first shrinkable tube 121 and a second shrinkable tube which are sequentially arranged 122 and third shrink tube 123].
  • the shrink tube is generally a dimensional shape similar to a nozzle structure, and the cross-sectional area of the first shrink tube 121 is larger than the second shrink tube 122, and the second shrink tube 122 is larger than
  • the third shrinking tube 123 can accelerate the exhaust gas after passing through the shrinking tubes in order; there are multiple partitions 111 between the inner wall of the outer tube 11 and the outer wall of the inner tube 12, and the partition 111 has multiple small holes 1110 : The first partition 112, the second partition 113, and the third partition 114 are separated from each other by two partitions 111.
  • One end of the inner tube 12 is connected to the exhaust port of the engine.
  • the muffler for enhancing the back pressure and the leakage of the engine of the present invention is connected to the engine, when the engine starts to run, a small amount of gas previously discharged from the cylinder first fills the inside of the outer tube 11 of the muffler 1 to make it When a certain pressure is reached, and because of the continuous operation of the engine, the muffler 1 (ie, the exhaust pipe) of the present invention acts on the gas discharged from the engine cylinder according to the timing of the valve.
  • Figure 2 shows the muffler of the present invention.
  • This shut-off phenomenon causes the pressure in the first shrink tube 121, the second shrink tube 122, and the third shrink tube 123 to drop sharply, and the exhaust air flow passing through the
  • the first, second, and third shrinking tubes 121, 122. 12 generate pressure compensation after radial suction, so that the first region 112, the second region 113, and the third region 114 generate a pressure balancing effect and obtain a certain pressure value.
  • This makes the muffler 1 have the above-mentioned effect on the next exhaust gas, so as to reach the bottom dead center of the piston just after the exhaust valve is opened (as shown in Fig. 3: point D) (as shown in Fig. 3: point B) ) Give full back pressure.
  • the piston enters the exhaust stroke (as shown in Figure 3: E point stroke)
  • the internal resistance can be reduced to achieve a sufficient exhaust effect.
  • the invention By cooperating with the timing operation of the engine's valve, the invention generates a large amount of back pressure in the time before the piston reaches the bottom dead center after the exhaust valve is opened. Operation, and reduce the internal resistance of the piston when it enters the exhaust stroke, which solves the shortcomings of gas leakage after the exhaust valve is opened in the existing engine design, which reduces the efficiency of the engine and the poor exhaust effect, with high work efficiency and savings Advantages of energy and reliability.
  • the invention adopts a Venturi shrink tube and a cross-section increasing structure, the sound damping structure is simpler than the traditional muffler, and achieves a sufficient exhaust effect, and has the advantages of simple structure, smooth exhaust and stable work. It is especially suitable for engine systems with high requirements on work efficiency and high reliability.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Abstract

La présente invention concerne un amortisseur de bruit de moteur servant à réguler la contre-pression et la fuite des gaz. L'amortisseur comprend un tube extérieur, un tube intérieur traversant coaxialement le tube extérieur, des plaques munies d'orifices disposées dans l'espace entre le tube intérieur et le tube extérieur, et des tubes convergents espacés situés dans le tube intérieur et servant à accélérer la circulation des gaz vers le tube intérieur et d'auxiliaire à la soupape d'échappement du moteur. Entre l'ouverture de la soupape d'échappement et le point mort du piston, l'amortisseur présente une forte contre-pression pouvant résister à la fuite des gaz dans le cylindre.
PCT/CN2000/000243 2000-08-18 2000-08-18 Amortisseur de bruit de moteur servant a reguler la contre-pression et la fuite des gaz WO2002014561A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN00819813.6A CN1454286A (zh) 2000-08-18 2000-08-18 增强回压和泄流的引擎用消音器
GB0303498A GB2383091A (en) 2000-08-18 2000-08-18 Engine silencer for controlling back pressure and gas leakage
AU2000265542A AU2000265542A1 (en) 2000-08-18 2000-08-18 Engine silencer for controlling back pressure and gas leakage
PCT/CN2000/000243 WO2002014561A1 (fr) 2000-08-18 2000-08-18 Amortisseur de bruit de moteur servant a reguler la contre-pression et la fuite des gaz

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2000/000243 WO2002014561A1 (fr) 2000-08-18 2000-08-18 Amortisseur de bruit de moteur servant a reguler la contre-pression et la fuite des gaz

Publications (1)

Publication Number Publication Date
WO2002014561A1 true WO2002014561A1 (fr) 2002-02-21

Family

ID=4574683

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2000/000243 WO2002014561A1 (fr) 2000-08-18 2000-08-18 Amortisseur de bruit de moteur servant a reguler la contre-pression et la fuite des gaz

Country Status (4)

Country Link
CN (1) CN1454286A (fr)
AU (1) AU2000265542A1 (fr)
GB (1) GB2383091A (fr)
WO (1) WO2002014561A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1507071B2 (fr) 2003-08-11 2019-10-16 Faurecia Emissions Control Technologies, Germany GmbH Silencieux d'échappement
RU2493381C1 (ru) * 2012-03-23 2013-09-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Пензенский государственный университет" (ФГБОУ ВПО "Пензенский государственный университет") Устройство для глушения шума двигателя

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4286689A (en) * 1978-08-15 1981-09-01 Malmsten Sven O Exhaust gas muffler
CN1120629A (zh) * 1994-08-08 1996-04-17 日野自动车工业株式会社 消音器

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4286689A (en) * 1978-08-15 1981-09-01 Malmsten Sven O Exhaust gas muffler
CN1120629A (zh) * 1994-08-08 1996-04-17 日野自动车工业株式会社 消音器

Also Published As

Publication number Publication date
GB2383091A (en) 2003-06-18
GB0303498D0 (en) 2003-03-19
AU2000265542A1 (en) 2002-02-25
CN1454286A (zh) 2003-11-05

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