WO1979000011A1 - Ensemble moteur a combustion interne de fonctionnement silencieux - Google Patents

Ensemble moteur a combustion interne de fonctionnement silencieux Download PDF

Info

Publication number
WO1979000011A1
WO1979000011A1 PCT/SE1978/000008 SE7800008W WO7900011A1 WO 1979000011 A1 WO1979000011 A1 WO 1979000011A1 SE 7800008 W SE7800008 W SE 7800008W WO 7900011 A1 WO7900011 A1 WO 7900011A1
Authority
WO
WIPO (PCT)
Prior art keywords
walls
power unit
wall
door
sound absorption
Prior art date
Application number
PCT/SE1978/000008
Other languages
English (en)
Inventor
J Cederbaum
Original Assignee
J Cederbaum
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 J Cederbaum filed Critical J Cederbaum
Priority to DE19782856929 priority Critical patent/DE2856929A1/de
Publication of WO1979000011A1 publication Critical patent/WO1979000011A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • F02B77/13—Acoustic insulation

Definitions

  • the invention relates to a silent-running motor power unit, the actual internal combustion motor unit being enclosed in a sound absorption chamber formed by a casing, the sid sing parts of which, which consist of at least two walls, one inside the other, form at least inlets for cooling air and/or air of combustion for the motor unit and possibly also outlets for exhaust air, the which inlets and possibly also outlets for outgoing sound waves constitute labyrinthine channels lined with absorption material, in which the sound waves lose their sound effect through several changes of direction.
  • Such silent-running motor power units are known with the walls of their side casing parts so arranged that they can be moved aside to render the unit accessible for inspection. In such case, however, the entire side casing part structure, divided into sections, has been made openable so as to render the motor power unit accessible for inspection and service.
  • Such devices have, however, been relatively difficult to handle, bulky and, owing to the weight of the large openable elements, also readily subject to damage.
  • the object of the present invention is to produce a more flexible and easily handled device,! with which faults cannot so easily occur, and consisting essentially in the fact that the wall or door elements of the side casing parts are individually hinged in such a way that, when an outer door element has been opened, a corresponding inner door element in the labyrinthine channel can also be opened and thus run clear of the outer door element.
  • the bearing axes of the inner door elements are displaced in relation to the bearing axes of the outer door elements in a direction perpendicular to these axes. It is appropriate in such case that the inner and the outer door elements are hinged in the opposing end-walls or posts of the sound absorption chamber.
  • fig. 1 shows one embodiment of the invention in which the sound absorption chamber has air intakes in both side casing parts and the outlet is formed by a channel on the upper side of the sound absorption chamber, the which channel emerges in one end-wall of the sound absorption chamber
  • fig. 2 shows another embodiment of the invention with the inlet arranged in one side casing part of the absorption chamber and the outlet in the other side casing part
  • fig. 3 shows a section of the embodiment in fig. 2 in which the inlet labyrinthine channel is longitudinally divided by means of an extra longitudinal absorption wall.
  • a silent-running internal combustion motor power unit in the form of a trailer 1 which in its central portion contains a sound absorption chamber 2, in the centre of which is a motor unit 3.
  • the sound absorption chamber is laterally bounded by side casing parts 4, 5 containing inlet labyrinthine channels 6, 7.
  • the sound absorption chamber is bounded by a ceiling 8 through which the exhaust pipe 9 of the power unit passes up to the silencer 10. From the latter the exhaust gases pass through a pipe 11 into an outlet channel 12 formed between the ceiling 8 and overlying roof 8a and emerging in the rear end-wall 13 of the power unit.
  • inlets 17, 18 are placed in walls 19, 20 of the side casing parts. These inlets emerge into sound absorption channels 6, 7 and the in-flowing air passes, as shown by arrows, first into the two sound absorption channels 6, 7 in the direction of the arrows from the front 16 towards the rear 14 end-wall, thereafter into the sound absorption chamber 2 through openings in the inner walls of the sound absorption channels 6, 7 as shown by the curved arrows.
  • the air then flows along the motor power unit 3, through a compression fan 21, the radiator 22 and, as shown by the upward pointing arrow, upwards to the outlet channel 12 above the sound absorption chamber 2.
  • the used air together with the exhaust gases then emerge in the rear end-wall 13 as indicated by the arrow there.
  • the side casing walls contain two outer wall doors 22a, 23 and an inner wall door 24.
  • the outer wall door 22 is mounted on hinges 25, 26 placed on a post near the front end-wall 16 of the unit, while door 23 is mounted on hinges 27, 28 on the rear end-wall 14 of the sound absorption chamber 2.
  • the inner wall door 24 is mounted on two hinges, of which the upper 29 is seen in fig. 1. These two hinges, as is seen are displaced towards the rear end-wall 14 of the sound absorption chamber 2 so far that the door 24, after doors 22, 23 have been opened, can also be opened without being obstructed by the outer doors.
  • the arrangements are the same in the other side casing of sound absorption chamber 2.
  • the entire sound absorption casing is denoted by 1, the outer wall door of the side casing parts by 23, and the inner wall door by 24.
  • the sound absorption chamber is denoted by 2, the motor power unit by 3, the compression fan by 21, the radiator by 22, the exhaust pipe by 9, the silencer by 10, and the outlet pipe by 11 , while the ceiling of the sound absorption chamber has been denoted by 8 and its roof by 8a, and the rear end-wall by 14.
  • the outer side-wall of the other side casing part has been denoted by 7 and the inlet opening by 17.
  • fresh air is admitted through the inlet opening 17 as shown by the arrow.
  • the air then passes through the sound absorption channel 6, round the inner side-wall 24 of the side casing, as shown by the curved arrow, flows longitudinally along the unit up to the compression fan 21, passes the radiator 22 and then branches into an air-stream up to the upper outlet channel 12 and out to the outlet in the end-wall 14, and into another air-stream, as shown by the curved arrow beside the front .
  • end-wall 16 into the sound absorption channel 7 in the other side casing and out through an opening in the side-wall, as marked by a curved arrow.
  • the wall doors 23, 24 in the side casing parts are mounted, the former (i.e. door 23), at the rear end-wall 14 of the sound absorption chamber, on hinges 27, 28, while the inner side-wall 24 is mounted at the front end-wall 16 on two hinges, the upper 29 of which is glimpsed in the figure.
  • the wall doors of the other side casing, which form channel 7, are similarly mounted.
  • Fig. 3 shows a cross-section of the embodiment shown in fig. 2, in which an extra longitudinal sound absorption wall 29 has been introduced in one 6 of the sound absorption channels. Otherwise the notations in fig. 3 are the same as in fig. 2. By means of dash-dot lines it has been indicated how the two side-walls 23, 24 can be entirely opened out to allow inspection of the motor power unit 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Building Environments (AREA)
  • Motor Or Generator Frames (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Abstract

Ensemble moteur de fonctionnement silencieux comprenant un moteur a combustion interne (3) enferme dans une chambre absorbant les sons forme par une enceinte comprenant au moins deux parois (24, 22a, 23) dont l'une (24) est disposee a l'interieur par rapport a l'autre (22a, 23). Les parois definissent une chicane (6, 1), doublee d'un materiau absorbant les sons. L'acces au moteur (3) et son entretien sont facilites par le fait que les parois (22a, 23, 24) comprennent des parties formant portes battantes, soit interne (24), soit externe (22a, 23), pivotant autour de l'une de leurs extremites, une partie interne (24) pouvant pivoter vers l'exterieur dans l'ouverture d'une partie externe (22a, 23). Ceci est rendu possible par le fait que les parties pivotantes sont constituees par une partie plane plus petite de la paroi et plus legere que les autres parties des parois constituant la chicane.
PCT/SE1978/000008 1977-06-23 1978-06-26 Ensemble moteur a combustion interne de fonctionnement silencieux WO1979000011A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782856929 DE2856929A1 (de) 1977-06-23 1978-06-26 Silent running internal combustion motor power unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7707334A SE406955B (sv) 1977-06-23 1977-06-23 Anordning vid en for ett tystgaende motorkraftaggregat avsedd ljudabsorptionskammare
SE7707334 1977-06-23

Publications (1)

Publication Number Publication Date
WO1979000011A1 true WO1979000011A1 (fr) 1979-01-11

Family

ID=20331676

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1978/000008 WO1979000011A1 (fr) 1977-06-23 1978-06-26 Ensemble moteur a combustion interne de fonctionnement silencieux

Country Status (5)

Country Link
EP (1) EP0007331A1 (fr)
FR (1) FR2466615A1 (fr)
GB (1) GB2036861B (fr)
SE (1) SE406955B (fr)
WO (1) WO1979000011A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2272486A (en) * 1992-11-17 1994-05-18 Jim Sutherland Shaw Noise suppression enclosure of an engine-generator set
WO2002086294A1 (fr) * 2001-04-24 2002-10-31 Wieser-Linhart Emil A J Installation mobile servant l'insonorisation et a la purification des gaz d'echappement d'un moteur a combustion interne
EP3216996A1 (fr) * 2016-03-09 2017-09-13 Kohler Co. Systèmes de suppression de bruit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE414504B (sv) * 1979-08-22 1980-08-04 Bo Carlsson Sett och anordning vid lagring och uttag av verme genom smeltning och kristallisation av en eller flera kemiska foreningar
US5910560A (en) * 1996-11-29 1999-06-08 Sumitomo Chemical Company, Ltd. Thermoplastic resin composition and molded article

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB640740A (en) * 1948-02-26 1950-07-26 Paxman & Co Ltd Davey Improvements in or relating to sound insulating and absorbing means for internal combustion engines
FR1208482A (fr) * 1958-06-13 1960-02-24 Perfectionnements apportés aux moyens pour insonoriser des groupes comportant au moins un moteur thermique et en particulier des groupes électrogènes
FR1521057A (fr) * 1967-04-27 1968-04-12 Hatz Motoren Enveloppe insonorisante pour ensembles mécaniques générateurs de bruit
SE309499B (fr) * 1963-10-22 1969-03-24 J Cederbaum
SE326841B (fr) * 1966-04-06 1970-08-03 J Cederbaum
SE328306B (fr) * 1966-06-10 1970-09-14 Kloeckner Humboldt Deutz Ab
SE328307B (fr) * 1967-08-22 1970-09-14 Vokes Ltd
SE369543B (fr) * 1973-08-27 1974-09-02 Atlas Copco Ab
SE372794B (fr) * 1973-01-05 1975-01-13 B Kirsch

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB640740A (en) * 1948-02-26 1950-07-26 Paxman & Co Ltd Davey Improvements in or relating to sound insulating and absorbing means for internal combustion engines
FR1208482A (fr) * 1958-06-13 1960-02-24 Perfectionnements apportés aux moyens pour insonoriser des groupes comportant au moins un moteur thermique et en particulier des groupes électrogènes
SE309499B (fr) * 1963-10-22 1969-03-24 J Cederbaum
SE326841B (fr) * 1966-04-06 1970-08-03 J Cederbaum
SE328306B (fr) * 1966-06-10 1970-09-14 Kloeckner Humboldt Deutz Ab
FR1521057A (fr) * 1967-04-27 1968-04-12 Hatz Motoren Enveloppe insonorisante pour ensembles mécaniques générateurs de bruit
SE328307B (fr) * 1967-08-22 1970-09-14 Vokes Ltd
SE372794B (fr) * 1973-01-05 1975-01-13 B Kirsch
SE369543B (fr) * 1973-08-27 1974-09-02 Atlas Copco Ab

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2272486A (en) * 1992-11-17 1994-05-18 Jim Sutherland Shaw Noise suppression enclosure of an engine-generator set
WO2002086294A1 (fr) * 2001-04-24 2002-10-31 Wieser-Linhart Emil A J Installation mobile servant l'insonorisation et a la purification des gaz d'echappement d'un moteur a combustion interne
EP3216996A1 (fr) * 2016-03-09 2017-09-13 Kohler Co. Systèmes de suppression de bruit
US10309302B2 (en) 2016-03-09 2019-06-04 Kohler Co. Noise suppression system

Also Published As

Publication number Publication date
FR2466615A1 (fr) 1981-04-10
GB2036861A (en) 1980-07-02
SE7707334L (sv) 1978-12-24
SE406955B (sv) 1979-03-05
GB2036861B (en) 1982-06-03
EP0007331A1 (fr) 1980-02-06

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