GB2150218A - Exhaust gas muffler adapted to have its axis vertical - Google Patents

Exhaust gas muffler adapted to have its axis vertical Download PDF

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Publication number
GB2150218A
GB2150218A GB08429306A GB8429306A GB2150218A GB 2150218 A GB2150218 A GB 2150218A GB 08429306 A GB08429306 A GB 08429306A GB 8429306 A GB8429306 A GB 8429306A GB 2150218 A GB2150218 A GB 2150218A
Authority
GB
United Kingdom
Prior art keywords
exhaust
diameter
ofthe
outlet
inlet
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
GB08429306A
Other versions
GB2150218B (en
GB8429306D0 (en
Inventor
Lajos Toth
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.)
GANZ MAVAG MOZDONY VAGON
Original Assignee
GANZ MAVAG MOZDONY VAGON
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 GANZ MAVAG MOZDONY VAGON filed Critical GANZ MAVAG MOZDONY VAGON
Publication of GB8429306D0 publication Critical patent/GB8429306D0/en
Publication of GB2150218A publication Critical patent/GB2150218A/en
Application granted granted Critical
Publication of GB2150218B publication Critical patent/GB2150218B/en
Expired 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
    • 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 ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/085—Other arrangements or adaptations of exhaust conduits having means preventing foreign matter from entering exhaust conduit
    • 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
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/083—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using transversal baffles defining a tortuous path for the gases or successively throttling gas flow
    • 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
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/005—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for draining or otherwise eliminating condensates or moisture accumulating in the apparatus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Abstract

A conical baffle (11) has an inlet diameter (D2) which is greater than the diameter (D5) of the exhaust inlet (1) while its outlet diameter (D1) is smaller than the diameter (D0) of the exhaust outlet (16). A collecting cone (8) has radially outwardly extending, downwardly inclined tubular ribs (9) which are connected to the interior of the collecting cone (8). Externally to a diameter (D4) which is greater than the diameter (D5) of the exhaust inlet (1), these tubular ribs (9) have outflow openings (10), and the diameter (D3) of the cone base is greater than the outlet diameter (D1) of the conical baffle (11). At least one outlet pipe (18) is provided in the bottom plate (17) for discharge of water flowing downwardly from the exhaust outlet (16). <IMAGE>

Description

SPECIFICATION Exhaust muffler with vertical axis This invention relates to an exhaust muffler with vertical axis forthe exhaust systems of motor vehicles, the muffler of the exhaust system being arranged vertically.
The known exhaust mufflers with vertical axis have a housing bounded by a jacket, a bottom plate and a cover, and one problem ofthese mufflers is the difficulty of having to conduct away the deposited water and other water entering the mufflerthrough the exhaust outlets. This removal ofwaterfrom the exhaust pipe is extremely important in orderto prevent water seeping into the engine.
The problem described above occurs mostfrequentlyin railwaytractorvehicles, where the preven- tion of water penetration is mandatory but extremely difficult to achieve, especially in tropical regions.
Various extremely complicated exhaust systems have already been proposed for solving this problem.
One example isthesystem of the French Company "Vibrachoc", but this can only be installed horizontally and is notonlycomplicated in constructionbutalso very bulky. In this system, the penetration of water into the engine of the vehicle is prevented by a very clumsy solution which in practice reduces the engine output and shortens the reliable service life of the exhaust system. There is at present no known solution to providing a system which can be installed with its axis placed vertically and yet prevents the penetration of water and can, moreover, be provided with sound damping.
It is therefore an object of the present invention to provide an exhaust muffler with vertical axis for the exhaust systems of motor vehicles, which muffler, although installed vertically, affects the output of the engine as little as possible, prevents the penetration of water into the interior of the engine, is simple, space saving and yet sturdy in construction and may optionally also be provided with sound damping means.
In accordance with the further development of the invention, the housing contains an internal chamber which is preferably cylindrical and the internal diameter of which is greaterthan the diameter ofthe exhaust outlet. A baffle in the form of a cone section is arranged coaxially in the upper region of this internal chamber, in the vicinity of the exhaust outlet, the inlet diameterofwhich baffle is greaterthan the diameter ofthe exhaust inlet, while its outlet diameter is smaller than the diameter ofthe exhaust outlet.A collecting cone is arranged coaxially in the lower region ofthe internal chamber, in the vicinity ofthe exhaust inlet, and connected to this collecting cone are radially outwardly directed, downwardly inclined tubular ribs which communicatewith the interiorofthecollecting cone and which have outflow openings situated externally to a diameter which is larger than the diameter ofthe exhaust inlet. The collecting cone is placed with its tip directed downwards, towards the exhaust inlet, and the diameter of its base is larger than the outlet diameter ofthe baffle. Lastly, an outflow pipe is provided in the bottom plate of the muffler to conduct away the water.
In the exhaust muffler according to the invention, the streams of water and of exhaust gas, which flow in opposite directions, are thereby completely separated from one another. The gas flows upwards without turbulence and with as little flow resistance as possible, and any water entering through the exhaust outlet avoids the muffler inlet and can be safely and reliably removed through the outlet pipe.
According to the invention, it is advantageous if the baffle is attached partly to the cover, partly to the jacket ofthe exhaust muffler by means of radially outwardly extending stiffening ribs.
It is preferred according to the invention to give the tubular ribs a streamlined form, e.g. a wing-shaped profile, for the purpose of keeping the flow resistances small.
Depending on its particular application in practice, the exhaust muffler according to the invention may be at least partly covered with a sound damping material on the internal surface ofthe housing, and this sound damping material may be supported on the internal surface by a perforated inner jacket.
Furtherdetailsoftheinventionwill be explained in a description of an embodiment of the invention given byway of example with reference to the attached drawing. The single figure ofthe drawing represents a section through an embodimentofthe exhaust muffler according to the invention.
As may be seen from the drawing,the exhaust muffler is in the form of a housing bounded by an external jacket 6, an upper cover 14 and a bottom plate 17 and is connected either directly to the engine orto an exhaust pipe on the enginethrough an exhaust inlet 1 in the bottom plate 17 and is connected to an exhaust pipe leading out of the vehicle through an exhaust outlet 16 in the cover 14. The exhaust inlet 1 has a diameter D5which is greater than the diameter DO of the exhaust outlet 16.
In the interior ofthe housing is an internal chamber 3 which in this embodiment is preferably cylindrical. In the upper region of the internal chamber 3, in the vicinity ofthe exhaust outlet 16, a baffle 11 arranged with its central axis coinciding with the central axis of the housing is attached by narrow, vertical, radially outwardly extending stiffening ribs 12. The baffle 11 has the form of a cone section tapering upwards, with its inlet diameter D2 greater than the diameter D5 of the exhaust inlet 1 while its outlet diameter D1 is smallerthan the diameter DO of the exhaust outlet 16.
The stiffening ribs 12 attach the baffle 11 both to the cover 14 and to the jacket6 of the housing.
In the lower region of the internal chamber 3, in the vicinity of the exhaust inlet 1, a collecting cone8 is also arranged with its central axis coinciding with the central axis of the housing, the tip of this cone being directed downwards towards the exhaust inlet 1. The diameter D3 ofthe upwardly facing base of this cone is greaterthan the outlet diameter D1 ofthe baffle 11.
The collecting cone 8 is held in its position on the central axis by tubular ribs 9 which extend radially outwards and are inclined downwards in the direction oftheexhaustinlet1.Thesetubularribs9communi- cate with the interior ofthe collecting cone 8through the wall of this cone. In the vicinity of the jacket 6, externally to a diameter D4which is greaterthan the diameter D5 ofthe exhaust inlet 1, outflow openings 10 are provided in thetubular ribs 9.
In view ofthe turbulences which occur and the flow resistances, it is advantageous to give the tubular ribs 9 in a streamlined form. In this embodiment, they therefore have a wing-shaped profile.
At least one outlet pipe 18 is provided in the bottom plate 17 ofthe housing to remove water from the interiorofthe muffler. This outlet pipe is connected to the surrounding structure by a flange 15. In this lowermost region of the internal chamber 3, the exhaust inlet 1 extending into the internal chamber3 is securely centered on the central axis by lower stiffening ribs 7. Flange 2 is provided for connecting theinletl.
The cover 14 has a collar 13 at its junction with the jacket 6 of the housing 1, this collar serving as a reinforcement.
The exhaust muffler according to the invention may also be designed to perform a sound damping function. For this purpose, a sound absorbent material 5 of suitable thickness is arranged in the interiorofthe internal chamber 3, namely on the internal surface of the jacket 6 and of the cover 14, and held in position there byan internal perforatedjacket4which also protects it against wear andtear.
When the exhaust muffler according to the invention is installed in position,thestream of water entering from abovethroughthe exhaustoutlet 16 is completely separated from the exhaust gas entering from belowthrough the exhaust inlet 1, as already mentioned above. The main operational flow ofthe exhaust gas passes through the diameter D5 ofthe exhaust inlet 1 into the internal chamber 3, which has the largest diameter of the exhaust muffler and produces a resonance effect. The sound damping material provided may act as sound absorbent. The gas streaming in the direction ofthe exhaust outlet 16 flows round the collecting cone 8 and upwards between the tubular ribs 9.The gas then enters the cone section shaped baffle 11 where the streams taking various directions areforthe most part gathered in one direction as the gas flows through the cone before it leaves the mufflerthrough the exhaust outlet 16.
If water enters, e.g. in the event of rain, a stream of waterflows in the opposite direction, and the water entering through the exhaust outlet 16 is divided into two parts by the baffle 11. The water entering within the outlet diameter D1 of the baffle 11 is caught by the collecting cone 8 as its diameter D3 is greaterthan the diameter Dl, and this water is transferred to the interiorofthe tubular ribs 9from which it passes out through the outlet openings 10. Since the openings 10 are situated externallyto the diameter D4which is greaterthan the diameter D5 of the exhaust inlet 1, the water dripping from the openings 10 falls between the exhaust inlet 1 and the internal jacket4to be removed through the outlet pipe 18.
The second portion of water entering the muffler flows down on the outside of the baffle 11 and drips down from the region external to the inlet diameter D2 ofthe baffle 11, which is greater than the diameter D5 of the exhaust inlet 1, thus also entering the space between the exhaust inlet 1 and internal jacket 4, either with orwithoutfirst contacting the tubular ribs 9, and can thus be discharged through the outlet pipe 18.
The metal parts in the internal chamber3 should suitably be passivated or provided with some other protection against corrosion and the sound damping material 5 shou Id be water-resistant.
If the relationships between the various diameters mentioned above are considered as a whole,the following inequalities are found: DO greaterthan D5, D1 greaterthan D3, D2 greater than D5, D4 greater than D5.
Itwill be seen from the above thatthe exhaust muffler according to the invention is suitable for counterflowsorforseparating streams from one another, the exhaust gasesflowingthrough the muffler with little resistance and virtually without turbulence. Furthermore, water entering the exhaust muffler is safely prevented from reaching the engine.
At the sametime, the construction is simple, light and easily manufactured and sound absorption may be provided at the same time, so that several functions can be combined in one device (prevention of entry of water, sound damping). Servicing is hardly required, and even tar deposits can be discharged underthe vehicle through the one or more than one outflow pipe 18.

Claims (4)

1. Exhaust muffler with vertical axis for exhaust systems of motorvehicles, comprising a housing bounded by a jacket, a bottom plate and a cover, an exhaust inlet being formed in the bottom plate and an exhaust outlet in the cover, characterised in that an internal chamber (3) which is preferably cylindrical is formed in the housing, the internal diameter of which chamber (3) exceeds the diameterofthe exhaust outlet (16), and in that a baffle (11) in the form of a cone section is arranged coaxially in the upper region ofthe internal chamber (3), in the vicinity ofthe exhaust outlet (16), the inlet diameter (D2) of which baffle (11) is largerthan the diameter (D5) ofthe exhaust inlet (1) while its outlet diameter (D1 ) is smallerthan the diameter (DO) ofthe exhaust outlet (16), and in that a collecting cone (8) is arranged coaxially in the lower region of the internal chamber (3), in the vicinity ofthe exhaust inlet (1), and attached to said collecting cone (8) are radially outwardly directed, downwardly inclined tubular ribs (9) communicating with the interior ofthecollecting cone (8), which ribs (9) have outflow openings (10) situated externallyto a diameter(D4) which is greaterthan the diameter (D5) of the exhaust inlet (1 ),the collecting cone (8) being directed with its tip towards the exhaust inlet (1 ) and the diameter (D3) of its base being greaterthan the outlet diameter (D1 ) ofthe baffle (11), and in that at least one outlet pipe (18) is provided in the bottom plate (17).
2. Exhaust muffler according to claim 1, characterised in that the baffle (11) is attached partly to the cover (14) and partly to the jacket (6) of the housing by means of radially outwardly extending stiffening ribs (12).
3. Exhaust muffler according to claim 1 or claim 2, characterised in that each tubular rib (9) has a streamlined form, preferably a wing-shaped profile.
4. Exhaust muffler according to one ofthe claims 1 to 3, characterised in that the internal surface ofthe housing is at least partly covered with a sound damping material (5)which is held in placefromthe inside by a perforated internal jacket (4).
GB08429306A 1983-11-21 1984-11-20 Exhaust gas muffler adapted to have its axis vertical Expired GB2150218B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU833996A HU190188B (en) 1983-11-21 1983-11-21 Sound-damped exhaust pot system of verical axle

Publications (3)

Publication Number Publication Date
GB8429306D0 GB8429306D0 (en) 1984-12-27
GB2150218A true GB2150218A (en) 1985-06-26
GB2150218B GB2150218B (en) 1988-02-03

Family

ID=10966419

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08429306A Expired GB2150218B (en) 1983-11-21 1984-11-20 Exhaust gas muffler adapted to have its axis vertical

Country Status (3)

Country Link
DE (1) DE3441284A1 (en)
GB (1) GB2150218B (en)
HU (1) HU190188B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4733751A (en) * 1985-12-27 1988-03-29 General Dynamics, Pomona Division Rocket exhaust disrupter
GB2515328A (en) * 2013-06-20 2014-12-24 Barrus E P Ltd A valve, and a marine Propulsion unit incorporating a valve
US9103262B2 (en) 2010-11-24 2015-08-11 Cnh Industrial America Llc Combined intake aspirator venturi tube and water trap in vertical exhaust outlet stack
CN108791794A (en) * 2018-06-01 2018-11-13 中国舰船研究设计中心 The anti-water cannon device of the low flow resistance of chimney exhaust pipe

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19838703A1 (en) * 1998-08-26 2000-03-02 Zeuna Staerker Kg Device for calming the flow in the exhaust pipe of an internal combustion engine
CN110625277B (en) * 2019-09-19 2021-03-12 杭州海容激光技术有限公司 Automatic change robotic arm laser engraving equipment

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2554167A (en) * 1946-03-21 1951-05-22 George O Anderson Exhaust pipe water protector
DE1815258A1 (en) * 1968-12-18 1970-06-25 Kloeckner Humboldt Deutz Ag Internal combustion engine with an exhaust pipe that leads vertically or approximately vertically upwards

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4733751A (en) * 1985-12-27 1988-03-29 General Dynamics, Pomona Division Rocket exhaust disrupter
US9103262B2 (en) 2010-11-24 2015-08-11 Cnh Industrial America Llc Combined intake aspirator venturi tube and water trap in vertical exhaust outlet stack
GB2515328A (en) * 2013-06-20 2014-12-24 Barrus E P Ltd A valve, and a marine Propulsion unit incorporating a valve
CN108791794A (en) * 2018-06-01 2018-11-13 中国舰船研究设计中心 The anti-water cannon device of the low flow resistance of chimney exhaust pipe

Also Published As

Publication number Publication date
HU190188B (en) 1986-08-28
GB2150218B (en) 1988-02-03
DE3441284A1 (en) 1985-07-11
GB8429306D0 (en) 1984-12-27
HUT37092A (en) 1985-11-28

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Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee