EP0294821A2 - Enveloppe insonorisante pour moteur à combustion interne à refroidissement par air - Google Patents

Enveloppe insonorisante pour moteur à combustion interne à refroidissement par air Download PDF

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Publication number
EP0294821A2
EP0294821A2 EP88109251A EP88109251A EP0294821A2 EP 0294821 A2 EP0294821 A2 EP 0294821A2 EP 88109251 A EP88109251 A EP 88109251A EP 88109251 A EP88109251 A EP 88109251A EP 0294821 A2 EP0294821 A2 EP 0294821A2
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
air
engine according
sound
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.)
Granted
Application number
EP88109251A
Other languages
German (de)
English (en)
Other versions
EP0294821A3 (en
EP0294821B1 (fr
Inventor
Ernst-Siegfried Hartmann
Herbert Schleiermacher
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
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
Priority claimed from DE19873719266 external-priority patent/DE3719266A1/de
Priority claimed from DE19873719255 external-priority patent/DE3719255A1/de
Application filed by Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Publication of EP0294821A2 publication Critical patent/EP0294821A2/fr
Publication of EP0294821A3 publication Critical patent/EP0294821A3/de
Application granted granted Critical
Publication of EP0294821B1 publication Critical patent/EP0294821B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/12—Filtering, cooling, or silencing cooling-air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P1/00—Air cooling
    • F01P1/02—Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders
    • 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 soundproof, air-cooled internal combustion engine according to the preamble of the first claim.
  • German utility model 19 63 204 describes a sound-encapsulated, air-cooled internal combustion engine in which both the inlet and the outlet for the cooling air in the sound capsule have a Z-shaped or S-shaped curve.
  • the invention has for its object to design the internal ventilation in a soundproof, air-cooled internal combustion engine so that one no encapsulated motor no performance restriction must be made to avoid temperature-related failures in temperature-critical components.
  • this is achieved in that two outlet channels are provided and the cooling air is divided into a main flow to the oil cooler and two secondary flows for direct cooling of the internal combustion engine in the air guide space.
  • main flow and secondary flow says nothing about the volume of these flows. It may well be that the side streams have a larger volume than the main stream.
  • an outlet duct is L-shaped and the other outlet duct is Z-shaped, since this configuration ensures optimal adaptation of the cooling air flow to the sound capsule.
  • a first side stream cools the cylinder head and a second side stream cools the space between the engine and the sound capsule.
  • the first bypass stream cools both the cylinder head and the cylinder tube area or only the cylinder head.
  • the main flow in the flow direction behind the oil cooler is divided into three partial flows, of which a first partial flow, guided between the engine and the sound capsule, flows around the engine and combines with the second secondary flow, a second partial flow between the cylinder head and the L-shaped exhaust port is guided, and a third main part flow leaves the sound capsule directly via the L-shaped outlet channel.
  • a first partial flow guided between the engine and the sound capsule
  • a second partial flow between the cylinder head and the L-shaped exhaust port is guided
  • a third main part flow leaves the sound capsule directly via the L-shaped outlet channel.
  • the first and second secondary flows and the first and second partial flows leave the sound capsule via the Z-shaped outlet duct.
  • the speed of the cooling fan is expediently increased if necessary. This compensates for the higher system resistance and enables the additional cooling air flow.
  • deflections are expediently arranged in the inlet and outlet channels.
  • the outlet openings of the outlet channels are arranged next to one another.
  • the emerging cooling air flows can be passed on via a common discharge line.
  • a further advantageous embodiment relates to the intake air filter, which is advantageously arranged in the inlet channel, the filter maintenance cover of the intake air filter is outside the sound capsule.
  • the intake air filter is a cyclone filter, the dust outlet opening of the cyclone filter being arranged in the cooling air flow of the inlet duct and a silencer being arranged in front of the intake port of the air filter.
  • the cooling and combustion air is drawn in via a common Z-shaped inlet duct. Since the dust outlet opening of the cyclone filter is arranged in the cooling air flow of the inlet duct, the dust discharge from the cyclone filter can be entrained by the cooling air flow and conveyed by the motor until it finally gets out into the open again via the L-shaped or Z-shaped outlet duct. This arrangement also includes the noise development of the dust outlet valve in the sound capsule.
  • the figures show a soundproof, air-cooled internal combustion engine which has all the parts and units necessary for the operation of an internal combustion engine.
  • the internal combustion engine shown is a multi-cylinder internal combustion engine with cast-in cylinder liners 12 in the open deck arrangement, i. H.
  • An annular space 13 is arranged between the cylinder liner 12 and the crankcase 9 and is open to the cylinder head 7. Cooling oil is advantageously passed through this annular space 13 for cooling.
  • a piston 14 is guided in the cylinder liner 12 and is connected to the crankshaft 16 of the internal combustion engine via a connecting rod 15.
  • the cylinder head 7 is only hinted at, whereby it should be emphasized here in particular that it is air-cooled and therefore has air channels 17.
  • cooling air is conveyed from a cooling fan (not shown) through a Z-shaped inlet duct 19 into an air guide space 4 and there, according to the invention, is divided into a main flow 5 to the oil cooler 1 and two secondary flows 6, 10 for direct cooling of the internal combustion engine.
  • the two sidestreams 6, 10 split up in such a way that a first sidestream 6 cools the cylinder head 7 and a second sidestream 10 cools the space between the engine and the sound capsule 2.
  • the main stream 5 is divided into three sub-streams 8 a, 8 b, 8 c.
  • the majority of the cooling air flow leaves the sound capsule 2 through the third main partial flow 8 c through the L-shaped outlet duct 3 a.
  • the walls of the L-shaped outlet duct 3 a are lined with a sound-absorbing layer. This is also the case with the second outlet duct 3 b, which will be described later.
  • the cooling air flow behind the oil cooler is also divided into two part flows 8 a and 8 b, of which the first part flow 8 a runs between the motor and the sound capsule 2, flows around the motor and combines with the second side flow 10 .
  • a second partial flow 8 b is guided between the cylinder head 7 and the L-shaped outlet duct 3 a.
  • the first and second side stream 6, 10 and the first and second partial stream 8 a, 8 b leave the sound capsule via a Z-shaped outlet channel 3 b.
  • This outlet channel 3 b is arranged on one side of the internal combustion engine, the outlet openings 20 of the two outlet channels 3 a, 3 b being arranged side by side.
  • This has the advantage that the emerging cooling air flows can be passed on via a common discharge line.
  • baffles 11 are advantageously provided in these.
  • the partial streams 8 a, 8 b can also be guided such that the partial stream 8 a branches off from the secondary stream 10 and partial stream 8 b from the secondary stream 6.
  • the delivery pressure and the delivery rate of the cooling fan are advantageously increased. This can e.g. B. can be achieved by increasing the speed.
  • FIGS 2 and 3 show the advantageous embodiment that an intake air filter is arranged in the inlet channel 19, the filter maintenance cover of the intake air filter being outside the sound capsule 2.
  • this intake air filter is a cyclone filter 21.
  • a silencer is advantageously arranged in front of the intake port of the air filter. This embodiment is not shown in the figures.
  • the dust outlet opening 22 of the cyclone filter 21 is arranged in the cooling air flow of the inlet channel 19.
  • the air flow is conveyed by the cooling fan 20 into the inlet duct 19, where it is divided into a cooling and combustion air flow.
  • the cooling air flow leads through the cooling fan into the air duct, from which the cooling air is conveyed to the oil cooler or to the locations of the internal combustion engine to be cooled.
  • the combustion stream leads through the cyclone filter 21 into the intake ducts of the internal combustion engine.
  • the cyclone filter 21 is arranged in the inlet duct 19 such that the dust outlet opening 22 of the cyclone filter 21 is arranged in the cooling air flow of the inlet duct 19. This has the consequence that the dust discharge from the cyclone filter 21 is entrained by the cooling air flow and is conveyed by the engine until it finally leaves the sound capsule 2 again via the outlet channel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Exhaust Silencers (AREA)
EP88109251A 1987-06-10 1988-06-10 Enveloppe insonorisante pour moteur à combustion interne à refroidissement par air Expired - Lifetime EP0294821B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3719255 1987-06-10
DE19873719266 DE3719266A1 (de) 1987-06-10 1987-06-10 Schallgekapselte, luftgekuehlte brennkraftmaschine
DE3719266 1987-06-10
DE19873719255 DE3719255A1 (de) 1987-06-10 1987-06-10 Schallgekapselte, luftgekuehlte brennkraftmaschine

Publications (3)

Publication Number Publication Date
EP0294821A2 true EP0294821A2 (fr) 1988-12-14
EP0294821A3 EP0294821A3 (en) 1989-09-13
EP0294821B1 EP0294821B1 (fr) 1992-09-30

Family

ID=25856474

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88109251A Expired - Lifetime EP0294821B1 (fr) 1987-06-10 1988-06-10 Enveloppe insonorisante pour moteur à combustion interne à refroidissement par air

Country Status (2)

Country Link
EP (1) EP0294821B1 (fr)
DE (1) DE3874972D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008003781U1 (de) * 2008-03-18 2009-08-13 Dolmar Gmbh Vorrichtung zur Reinigung von Ansaugluft

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104612803B (zh) * 2014-12-11 2017-02-22 隆鑫通用动力股份有限公司 具有紧密贴合型风罩的通机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1884321A (en) * 1929-02-09 1932-10-25 Herman A Schatz Air cooled internal combustion engine
FR1181278A (fr) * 1957-08-17 1959-06-12 Perfectionnements apportés aux moteurs, notamment à ceux à explosion, à refroidissement par air
DE1963204U (de) * 1966-06-10 1967-06-29 Kloeckner Humboldt Deutz Ag Schallgedaempftes brennkraftmaschineaggregat.
DE2012915A1 (de) * 1970-03-18 1971-09-30 List, Dipl.-Ing. Dr. Dr. h.c. Hans, Graz (Österreich) Luftgekühlte Brennkraftmaschine mit schallisolierender Verkleidung
DE2413945A1 (de) * 1973-03-26 1974-10-24 Tatra Np Einrichtung zur gerichteten verteilung der kuehlluft bei luftgekuehlten motoren
DE2507475A1 (de) * 1975-02-21 1976-09-02 Motoren Werke Mannheim Ag Luftgekuehlte brennkraftmaschine mit geraeuschdaempfung
JPS58204916A (ja) * 1982-05-24 1983-11-29 Yamaha Motor Co Ltd 小型発電装置の冷却機構

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1884321A (en) * 1929-02-09 1932-10-25 Herman A Schatz Air cooled internal combustion engine
FR1181278A (fr) * 1957-08-17 1959-06-12 Perfectionnements apportés aux moteurs, notamment à ceux à explosion, à refroidissement par air
DE1963204U (de) * 1966-06-10 1967-06-29 Kloeckner Humboldt Deutz Ag Schallgedaempftes brennkraftmaschineaggregat.
DE2012915A1 (de) * 1970-03-18 1971-09-30 List, Dipl.-Ing. Dr. Dr. h.c. Hans, Graz (Österreich) Luftgekühlte Brennkraftmaschine mit schallisolierender Verkleidung
DE2413945A1 (de) * 1973-03-26 1974-10-24 Tatra Np Einrichtung zur gerichteten verteilung der kuehlluft bei luftgekuehlten motoren
DE2507475A1 (de) * 1975-02-21 1976-09-02 Motoren Werke Mannheim Ag Luftgekuehlte brennkraftmaschine mit geraeuschdaempfung
JPS58204916A (ja) * 1982-05-24 1983-11-29 Yamaha Motor Co Ltd 小型発電装置の冷却機構

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 8, Nr. 50 (M-281)[1487], 7. März 1984; & JP-A-58 204 916 (YAMAHA HATSUDOKI K.K.) 29-11-1983 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008003781U1 (de) * 2008-03-18 2009-08-13 Dolmar Gmbh Vorrichtung zur Reinigung von Ansaugluft
US8622033B2 (en) 2008-03-18 2014-01-07 Dolmar Gmbh Device for cleaning intake air
DE102009009239B4 (de) * 2008-03-18 2018-01-11 Dolmar Gmbh Vorrichtung zur Reinigung von Ansaugluft

Also Published As

Publication number Publication date
EP0294821A3 (en) 1989-09-13
EP0294821B1 (fr) 1992-09-30
DE3874972D1 (de) 1992-11-05

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