WO1995002755A1 - Auspufftopf für verbrennungsmotor, insbesondere einzylinder-dieselmotor - Google Patents
Auspufftopf für verbrennungsmotor, insbesondere einzylinder-dieselmotor Download PDFInfo
- Publication number
- WO1995002755A1 WO1995002755A1 PCT/IB1994/000201 IB9400201W WO9502755A1 WO 1995002755 A1 WO1995002755 A1 WO 1995002755A1 IB 9400201 W IB9400201 W IB 9400201W WO 9502755 A1 WO9502755 A1 WO 9502755A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- muffler
- cylinder head
- wall section
- muffler according
- flange
- 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.)
- Ceased
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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1861—Construction facilitating manufacture, assembly, or disassembly the assembly using parts formed by casting or moulding
-
- 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
- F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
- F01N1/165—Silencing apparatus characterised by method of silencing by using movable parts for adjusting flow area
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
- F01N13/1827—Sealings specially adapted for exhaust systems
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1833—Construction facilitating manufacture, assembly, or disassembly specially adapted for small internal combustion engines, e.g. used in model applications
-
- 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
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
-
- 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
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
- F01N2450/24—Methods or apparatus for fitting, inserting or repairing different elements by bolts, screws, rivets or the like
-
- 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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
Definitions
- the invention relates to a muffler on an internal combustion engine, in particular a single-cylinder diesel engine, with an inlet opening and an outlet opening for the exhaust gas, according to the preamble of claim 1.
- Such a muffler described in British Patent No. 1,447,877 is braced against the cylinder head by means of through-bolts, the hollow shape of the muffler being stiffened by means of the tubular sleeves against deformation under the action of the tensile forces of the through-bolts.
- the aim of the present invention is to make the muffler simple and lightweight and to enable it to be stiffened and fastened without great effort.
- the particular simplification is that the passage screws used to fasten the muffler to the cylinder head simultaneously serve to stiffen the muffler from the side without stressing it in the pulling direction of the passage screws. Due to the fact that the outer wall section is fixed on the ends of the sleeves that are distant from the cylinder head, tensions on the one hand and unwanted vibrations of the muffler on the other hand can be practically avoided. As a result, it can be produced with a relatively thin wall thickness.
- a muffler made of a one-piece metal housing produced by casting is preferred. The preferred casting method is casting from aluminum with a sand core, which is crushed and removed after casting.
- the muffler also acts as a resonator, ie it takes over the sound damping of the exhaust gas if its volume is matched accordingly.
- special muffler devices can be connected to the muffler, namely in the event that soundproofing cannot otherwise be achieved within the prescribed limits.
- Particularly simple solutions are, for example Sieve insert in the area of the outlet opening or a spring-loaded flap.
- FIG. 1 shows a cross section through the exhaust pipe
- FIG. 2 shows a top view of FIG. 1
- FIG. 3 shows an enlarged detail III according to FIG. 1
- FIG. 4 shows the detail according to FIG. 3 in front of the
- Exhaust pipe 1 shown in FIGS. 1 and 2 is a one-piece casting, preferably made of aluminum.
- a flange 3 is cast on, which is provided for direct connection to the cylinder head.
- the flange 3 has three bores 23 for through screws 4, the ends 5 of which face the cylinder head are provided with a thread with which they can be screwed into corresponding threaded bores of the cylinder head.
- the through bolts 4 pass through the entire interior of the muffler 1 and their outer ends 6 protrude through bores 21 of an outer wall section 7 of the muffler 1.
- the through screws 4 are clamped by means of nuts 8 against sleeves 9 through which they are inserted.
- the sleeves 9 are supported on the one hand against the inner wall 10 of the inner wall section 2; on the other hand, they end within the bores 21 in the outer wall section 7. There, a seal 11 is deformed between the associated end of a sleeve 9 and a bushing 12 clamped between nut 8 and sleeve 9, so that the seal 11 is effectively on the inside of the sleeve Bore 21 is present.
- This sealing connection is shown enlarged in FIGS. 3 and 4.
- the flange 3 surrounds the inlet opening 13 of the exhaust gas, which in turn emerges from the muffler 1 through the outlet opening 14.
- the outlet opening is closed by a spring-loaded flap 15; under the action of the exhaust gas pulsations, the flap 15 lifts slightly from its seat 16 against the pressure of the spring 17, the exhaust gas pulsations being smoothed while reducing the noise.
- the through screws 4 each have at their two ends 5, 6 external threads, and in addition to these threads each have a typical turn 18 for lag screws.
- the wall of the muffler 1 has thickened portions 19 in the area of the bores 21 of the outer wall section 7, so that better guidance for the sleeves 9 and the bushes 12 is achieved thanks to correspondingly lengthened bores 21.
- FIG. 3 shows an enlarged section according to III of FIG. 1, namely in the position of the sleeve 9 and the bush 12 after the nut 8 has been tightened.
- the seal 11 is already correspondingly squeezed here, i. H. it completely fills the remaining cavity between the bushing 12 and the sleeve 9 and lies firmly and sealingly against the inner wall of the bore 21 in the outer wall part 7.
- FIG. 4 For clarification, the state before the seal 11 is deformed is shown in FIG. 4.
- the seal 11 is shown here as a ring with an approximately square cross section; the bushing 12 has a conical end face 20, which facilitates the deformation of the seal 11 made of soft metal such as copper.
- the nut 8 is increasingly screwed onto the externally threaded end 6 of the through screw 4. 4
- the bore 21 of the outer wall section 7 is partially exposed.
- the existing cavity is completely filled, the volume of the seal being dimensioned approximately such that, in the end position of the bush 12, its inner end face 22, as shown in FIG the opposite end face of the sleeve 9 abuts. In the end position according to FIG.
- the seal 11 is firmly pressed within the bore 21, so that a full and permanent seal is achieved.
- This firm sealing closure serves at the same time to stiffen the muffler in its entirety, the three through screws 4 together with the sleeves 9 and bushings 12 located thereon forming a stable, largely structure-borne sound-free unit.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP94918500A EP0708882B1 (de) | 1993-07-15 | 1994-07-05 | Auspufftopf für verbrennungsmotor, insbesondere einzylinder-dieselmotor |
| DE59401668T DE59401668D1 (de) | 1993-07-15 | 1994-07-05 | Auspufftopf für verbrennungsmotor, insbesondere einzylinder-dieselmotor |
| AU69802/94A AU6980294A (en) | 1993-07-15 | 1994-07-05 | Silencer for internal combustion engines, in particular single-cylinder diesel engines |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4323644.8 | 1993-07-15 | ||
| DE4323644A DE4323644A1 (de) | 1993-07-15 | 1993-07-15 | Auspufftopf für Verbrennungsmotor, insbesondere Einzylinder-Dieselmotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1995002755A1 true WO1995002755A1 (de) | 1995-01-26 |
Family
ID=6492830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB1994/000201 Ceased WO1995002755A1 (de) | 1993-07-15 | 1994-07-05 | Auspufftopf für verbrennungsmotor, insbesondere einzylinder-dieselmotor |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0708882B1 (de) |
| AU (1) | AU6980294A (de) |
| DE (2) | DE4323644A1 (de) |
| WO (1) | WO1995002755A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5974044A (en) * | 1995-01-05 | 1999-10-26 | Mobile Communications Network Inc. | System and method for controlling voice and data communications |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0327401D0 (en) * | 2003-11-25 | 2003-12-31 | Emmett Malcolm D | Silencer for exhaust systems |
| DE102011005155A1 (de) | 2011-03-04 | 2012-09-06 | J. Eberspächer GmbH & Co. KG | Abgasanlagenkomponente |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1447877A (en) * | 1972-10-25 | 1976-09-02 | Tecumseh Products Co | Silencers for internal combustion engine exhaust gases |
| US4866934A (en) * | 1989-01-11 | 1989-09-19 | Brunswick Corporation | Marine drive exhaust system with shaped O-ring seals |
| US4972921A (en) * | 1988-06-16 | 1990-11-27 | Kawasaki Jukogyo Kabushiki Kaisha | Muffler for internal combustion engines |
-
1993
- 1993-07-15 DE DE4323644A patent/DE4323644A1/de not_active Withdrawn
-
1994
- 1994-07-05 AU AU69802/94A patent/AU6980294A/en not_active Abandoned
- 1994-07-05 DE DE59401668T patent/DE59401668D1/de not_active Expired - Fee Related
- 1994-07-05 EP EP94918500A patent/EP0708882B1/de not_active Expired - Lifetime
- 1994-07-05 WO PCT/IB1994/000201 patent/WO1995002755A1/de not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1447877A (en) * | 1972-10-25 | 1976-09-02 | Tecumseh Products Co | Silencers for internal combustion engine exhaust gases |
| US4972921A (en) * | 1988-06-16 | 1990-11-27 | Kawasaki Jukogyo Kabushiki Kaisha | Muffler for internal combustion engines |
| US4866934A (en) * | 1989-01-11 | 1989-09-19 | Brunswick Corporation | Marine drive exhaust system with shaped O-ring seals |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5974044A (en) * | 1995-01-05 | 1999-10-26 | Mobile Communications Network Inc. | System and method for controlling voice and data communications |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0708882B1 (de) | 1997-01-22 |
| AU6980294A (en) | 1995-02-13 |
| DE59401668D1 (de) | 1997-03-06 |
| EP0708882A1 (de) | 1996-05-01 |
| DE4323644A1 (de) | 1995-01-26 |
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