US3739873A - Dual outlet exhaust system - Google Patents
Dual outlet exhaust system Download PDFInfo
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- US3739873A US3739873A US00177773A US3739873DA US3739873A US 3739873 A US3739873 A US 3739873A US 00177773 A US00177773 A US 00177773A US 3739873D A US3739873D A US 3739873DA US 3739873 A US3739873 A US 3739873A
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- tailpipe
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- 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
- F01N13/082—Other arrangements or adaptations of exhaust conduits of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation
Definitions
- the invention accomplishes this object by means of a system that has a single muffler that discharges into two flow balanced branches that convey the gas to the system outlet points.
- FIG. 1 is a perspective, schematic view of an exhaust system embodying the invention
- FIG. 2 is an enlarged 'view of a portion of the system of FIG. 1, broken away to Show a modification
- FIG. 3 is an enlarged cross section through one of the outlet sections showing-a means for forming a flow balancing restriction therein;
- FIG. 4 is a view similar to FIG. 1 showing another embodiment of the invention.
- FIG. 5 is a view similar to FIG. 1 other embodiment of the invention.
- the internal combustion engine 1 typifies a high powered V-8 unit used in many modern automobilesand'5.
- the exhaust system 7 comprises dual, uniform diameter exhaust pipes 9 and 11 connected to the manifolds 3 and 5, respecand joined together in a Y point 13 so that their and 4 showing anthat leads to the inlet 17 of a single exhaust gas muffler 19.
- muffler outlet 21 After silencing in the muffler 19 gases leaving the, muffler outlet 21 enter a single tailpipe section 23 that isconnected thereto. A short distance.
- the uniform diameter tailpipe member 25 that provides section 23 has an opening formed in its wall and a branch uniform diameter tailpipe member 27 is welded tomember 25, around the opening in a Y joint 29 so that the system7' has a dual tailpipe structure, i.e., branch tailpipe 27 and the section" 31 of tailpipe member 25 which is downstream from the Y joint 29.
- the muffler 19 is located substantially to the right of the center line of the vehicle so that in order that the respective outlets 33 and 35 of the sections 2'7 and 31'be symmetrically located at the rear of the vehicle on opposite sides of the center line, the section 27 has a portion 37 that diverges from the tailpipe member25.
- the sections 27, and31 have transversely aligned kick-up sections or'arches 39 and 4-1,. respectively, to go overthe rear axle of the vehicle and these merge intoend sections 43 and 45,. respectively, that terminate in the outlets 33 and 35. 7
- the section 31 is somewhat shorter in length than section 27 and also in line with flow'from the muffler outlet 21 and, hence, in the absence of flow balancing means would presentless resistance to flow than the branch 27.
- the branchv 27 may be larger in cross section or diameter than the section 31.
- the section 31 may contain a fixed restrictor or orificev means 47 in the formofa Z-shaped tubular insert to substantially equalize its resistance with that of the section 27.
- pinch sections 48 are used to reduce the inner diameter of section 31.
- the operation of the system 7 is apparent.
- the system has the advantage of presenting the appearance of a dual exhaust system since the single system components are located beneath the automobile and out of sight.
- the use of a single muffler instead of two mufflers causes the muffler to operate at higher temperature level than the mufflers of a true dual system and this promotes a longer muffler life.
- An important advantage of the dual outlet arrangement of the invention is its reduction in the sound level of gas leaving the muffler 19.
- the combined areas of branches 27 and 31 substantially exceeds the area of muffler outlet 21 and that of the upstream gas passages including section 23 and the gas velocity is therefore substantially reduced in the dual tailpipe portion of the System. This diminishes the air rush effect and the noise associated with it and thereby lowers the sound level at the rear of the system 7.
- a single inlet muffler as illustrated, be used in systems of the invention, it'is apparent that benefits of the invention are also obtained if the muffler is ofa dual inlet, single outlet type in which case the exhaust pipes 9 and 11 would not merge but would feed directly into two muffler inlets. Further, as seen in FIG. 4, the muffler'may have a single inlet and this together with small diameter of pipes inside the muffler may result in a high gas velocity and the possibility of air rush noise which the balanced dual tailpipe arrangement of FIG. 4 overcomes.
- the engine 101 has only a single exhaust manifold 103 discharging into a single exhaust pipe 105 that leads to the inlet 107 of muffler 109.
- the muffler 109 has a single outlet 111 emptying into a tailpipe member 113 (similar to member 25) that includes a uniform diameter inlet section 115 connected to the outletlll.
- the member 113 has a tailpipe section 117 that is substantially in line with outlet 111 and a hole in its sidewall is covered to form a Y joint 119 by branch tailpipe section 121 which is welded to it.
- the section 117 (like section 31) presents less resistance to flow and flow balancing means in the form of a reduced diameter portion 123 of pipe section 117 is provided to substantially equalize the resistance of the two sides 117 and 121.
- a dual manifold engine 201 discharges exhaust gases into exhaust pipes 203 and 205 which are connected together in a Y joint 207 to form a single exhaust pipe section 209 that is connected to the inlet bushing 211 of muffler 213.
- the muffler is of the dual outlet type with outlets 215 and 217 connected to two tailpipes 219 and 221 of unequal length.
- Suitable flow balancing means are incorporated in one or both of the pipes to equalize flow and resistance, this being illustrated as orifice members 223 and 225, respectively, in pipes 219 and 221.
- An exhaust system for internal combustion engines comprising a single muffler having outlet means, a single tailpipe section connected to and receiving all gas from said outlet means, and a pair of tailpipe sections connected to and receiving all gas from said single tailpipe section, the combined cross sectional area of the pair of sections being greater than the cross sectional area of the single tailpipe section, and means for substantially equalizing flow in the pair of tailpipe sections, said means comprising a reduced diameter cross section in one of the pair of tailpipe sections acting as a flow restricting orifice.
- An exhaust system for internal combustion engines comprising a single muffler having outlet means, a single tailpipe section connected to and receiving all gas from said outlet means, and a pair of tailpipe sections connected to and receiving all gas from said single tailpipe section, the combined cross sectional area of the pair of sections being greater than the cross sectional area of the single tailpipe section, and means for substantially equalizing flow in the pair of tailpipe sections, one of said pair of tailpipe sections being larger in cross section than the other and the difference in cross section between two sections comprising said means.
- a dual type exhaust system for an internal combustion engine having two exhaust manifolds comprising a pair of exhaust pipes connected one to each of said manifolds, a single muffler, means connecting both exhaust pipes to said muffler, said muffler having a single outlet, a single tailpipe section connected to and receiving all gas from said outlet, a pair of tailpipe sections connected to and receiving all gas from said single tailpipe section, the combined cross sectional area of the pair of sections being greater than the cross sectional area of the single tailpipe section and the flow through the respective sections of said pair being substantially equal, said muffler having a single inlet and said means comprising a common exhaust pipe connected to and receiving gas from both said exhaust pipes and connected to said single inlet.
- a single muffler having inlet means and outlet means, exhaust pipe means connecting the engine to the inlet means, tailpipe means connected to and receiving all gas from said outlet means, said tailpipe means including a pair of tailpipe sections connected to and receiving all gas from said muffler, and means for substantially equalizing flow in the pair of tailpipesections, said outlet means comprising two separate outlets connected respectively to said tailpipe sections, at least one of said tailpipe sections including flow restricting means to serve as said flow equalizing means.
- An exhaust system for internal combustion engines comprising a single muffler having outlet means, a single tailpipe section connected to and receiving all gas from said outlet means, and a pair of tailpipe sections connected to and receiving all gas from said single tailpipe section, the combined cross sectional area of the pair of sections being greater than the cross sectional area of the single tailpipe section, one of said tailpipe sections being substantially longer than the other, and means for substantially equalizing flow in the pair of tailpipe sections.
- a dual type exhaust system for an internal combustion engine having two exhaust manifolds comprising a pair of exhaust pipes connected one to each of said manifolds, a single muffler, means connecting both exhaust pipes to said muffler,.said muffler havinga single outlet, a single tailpipe section connected to and receiving all gas from said outlet, a pair of tailpipe sect'ions connected to and receiving all gas from said single tailpipe section, one of said pair of tailpipe sections being substantially longer than the other, the combined cross sectional area of said pair of tailpipe sections being greater than the cross sectional area of the single tailpipe section, and flow restriction means in one of the tailpipe sections whereby the flow through the respective sections of said pair are substantially equal.
- a dual type exhaust system comprising a single rectangular muffler having a single tubular inlet at one end and a single tubular outlet at the other end, a single exhaust pipe connected to said inlet and a single tailpipe connected to said outlet, a pair of exhaust pipes connected in a Y joint to said single exhaust pipe, and a pair of tailpipes connected in a Y joint to said single tailpipe, the combined areas of said pair of tailpipes being larger than the area of said single tailpipe.
- a single muffler having inlet means and outlet means, exhaust pipe means connecting the engine to the inlet means, tailpipe means connected to and receiving all gas from said outlet means, said tailpipe means including a pair of tailpipe sections connected to and receiving all gas from said muffler, and restriction means in one of the tailpipe sections for substantially equalizing flow in the pair of tailpipe sections.
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- Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
An exhaust system for internal combustion engines comprises flow balanced dual outlet conduits.
Description
Morrish [81/36 D O Unlted States Patent 11 1 1111 3,739,873 Shaughnessy 1 June 19, 1973 DUAL OUTLET EXHAUST SYSTEM 2,940,249 6 1960 Gospodar 181 36 D 2,991,160 7 1961 Claussen 181/45 [75] Invent Jame? Pleasant 3,166,150 1/1965 Phelps 181/60 Lake, M1ch. 3,317,001 5 1967 Powers 61 al 181/36 13 Assigneez n a ine, VCEZIB [22] Filed: t 3 1971 FOREIGN PATENTS OR APPLICATIONS 1 428,695 5/1926 Germany 181/36 D 1 PP 177,773 647,118 6 1937 Germany 1,035,973 8/1958 Germany r 481,480 3/1938 Great Britain....
fag 3%: 923,492 4/1963 Great Britain 181/60 [58] Field 0 Search IIIIIII 81/36 R36 B 35 C, 641,878 7 1962 Italy 181 60 ll 5 60 5 5 Przmary Exammer-R1chard B. W1lk1nson Assistant ExaminerJohn F. Gonzales [56] References Cited Attorney-J. Kmg Harness, Paul F. S1eb0ld, Cyrus UNITED STATES PATENTS G. Minkler et aL 2,881,851 1 4 1959 Willsea 181 40 1,949,667 3/1934 Transiskus 181/44 57 B A T 2,047,443 7/1936- Starkweather et al 181/44 2,297,046 9/1942 Boume 181/35 B F system for engmes 2,305,946 12/1942 Wilson et al. 181/35 13 compflses flow balanced dual Outlet condults- 2,888,001 5 1959 8 Claims, 5 Drawing Figures with dual exhaust manifolds 3 .tively, flow is combined in a single exhaust pipe section BRIEF SUMMARY OF THE INVENTION It is the purpose of the invention to provide a highly effective, minimum cost exhaust gas silencing system for internal combustion engines.
' The invention accomplishes this object by means of a system that has a single muffler that discharges into two flow balanced branches that convey the gas to the system outlet points.
' DESCRIPTION or THE DRAWINGS FIG. 1 is a perspective, schematic view of an exhaust system embodying the invention;
FIG. 2, is an enlarged 'view of a portion of the system of FIG. 1, broken away to Show a modification;
FIG. 3 is an enlarged cross section through one of the outlet sections showing-a means for forming a flow balancing restriction therein;
FIG. 4 is a view similar to FIG. 1 showing another embodiment of the invention; and
FIG. 5 is a view similar to FIG. 1 other embodiment of the invention.
DESCRIPTION OF THE INVENTION The internal combustion engine 1 typifies a high powered V-8 unit used in many modern automobilesand'5. The exhaust system 7 comprises dual, uniform diameter exhaust pipes 9 and 11 connected to the manifolds 3 and 5, respecand joined together in a Y point 13 so that their and 4 showing anthat leads to the inlet 17 of a single exhaust gas muffler 19. After silencing in the muffler 19 gases leaving the, muffler outlet 21 enter a single tailpipe section 23 that isconnected thereto. A short distance. from the outlet 21, the uniform diameter tailpipe member 25 that provides section 23 has an opening formed in its wall and a branch uniform diameter tailpipe member 27 is welded tomember 25, around the opening in a Y joint 29 so that the system7' has a dual tailpipe structure, i.e., branch tailpipe 27 and the section" 31 of tailpipe member 25 which is downstream from the Y joint 29.
In the system illustrated the muffler 19 is located substantially to the right of the center line of the vehicle so that in order that the respective outlets 33 and 35 of the sections 2'7 and 31'be symmetrically located at the rear of the vehicle on opposite sides of the center line, the section 27 has a portion 37 that diverges from the tailpipe member25. The sections 27, and31 have transversely aligned kick-up sections or'arches 39 and 4-1,. respectively, to go overthe rear axle of the vehicle and these merge intoend sections 43 and 45,. respectively, that terminate in the outlets 33 and 35. 7
It isYdesired that the flow through the dualv tailpipe sections 27 and 3lbebalanced or equalized'and appropriate means is. employed, where necessary, to achieve. this balance. In the structure illustrated, the section 31 is somewhat shorter in length than section 27 and also in line with flow'from the muffler outlet 21 and, hence, in the absence of flow balancing means would presentless resistance to flow than the branch 27. Asa balancingmeans, therefore, the branchv 27 may be larger in cross section or diameter than the section 31. Alternatively, as shown in FIG. 2, the section 31 may contain a fixed restrictor or orificev means 47 in the formofa Z-shaped tubular insert to substantially equalize its resistance with that of the section 27. A further alternative is shown in FIG. 3 where pinch sections 48 are used to reduce the inner diameter of section 31.
The operation of the system 7 is apparent. The system has the advantage of presenting the appearance of a dual exhaust system since the single system components are located beneath the automobile and out of sight. The use of a single muffler instead of two mufflers causes the muffler to operate at higher temperature level than the mufflers of a true dual system and this promotes a longer muffler life.
An important advantage of the dual outlet arrangement of the invention is its reduction in the sound level of gas leaving the muffler 19. The combined areas of branches 27 and 31 substantially exceeds the area of muffler outlet 21 and that of the upstream gas passages including section 23 and the gas velocity is therefore substantially reduced in the dual tailpipe portion of the System. This diminishes the air rush effect and the noise associated with it and thereby lowers the sound level at the rear of the system 7.
While it is preferred that a single inlet muffler, as illustrated, be used in systems of the invention, it'is apparent that benefits of the invention are also obtained if the muffler is ofa dual inlet, single outlet type in which case the exhaust pipes 9 and 11 would not merge but would feed directly into two muffler inlets. Further, as seen in FIG. 4, the muffler'may have a single inlet and this together with small diameter of pipes inside the muffler may result in a high gas velocity and the possibility of air rush noise which the balanced dual tailpipe arrangement of FIG. 4 overcomes.
In FIG. 4, the engine 101 has only a single exhaust manifold 103 discharging into a single exhaust pipe 105 that leads to the inlet 107 of muffler 109. The muffler 109 has a single outlet 111 emptying into a tailpipe member 113 (similar to member 25) that includes a uniform diameter inlet section 115 connected to the outletlll. The member 113 has a tailpipe section 117 that is substantially in line with outlet 111 and a hole in its sidewall is covered to form a Y joint 119 by branch tailpipe section 121 which is welded to it. As in the case of member 25 the section 117 (like section 31) presents less resistance to flow and flow balancing means in the form of a reduced diameter portion 123 of pipe section 117 is provided to substantially equalize the resistance of the two sides 117 and 121.
In FIG. 5, a dual manifold engine 201 discharges exhaust gases into exhaust pipes 203 and 205 which are connected together in a Y joint 207 to form a single exhaust pipe section 209 that is connected to the inlet bushing 211 of muffler 213. The muffler is of the dual outlet type with outlets 215 and 217 connected to two tailpipes 219 and 221 of unequal length. Suitable flow balancing means are incorporated in one or both of the pipes to equalize flow and resistance, this being illustrated as orifice members 223 and 225, respectively, in pipes 219 and 221.
Thus, it is apparent that the invention may be used with any internal combustion engine to reduce exhaust noise of various types and that it is particularly useful in systems wherein there is a muffler having a single inlet bushing. Modifications in the specific'details illustrated may be made without departing from the spirit and scope of the invention.
I claim:
1. An exhaust system for internal combustion engines comprising a single muffler having outlet means, a single tailpipe section connected to and receiving all gas from said outlet means, and a pair of tailpipe sections connected to and receiving all gas from said single tailpipe section, the combined cross sectional area of the pair of sections being greater than the cross sectional area of the single tailpipe section, and means for substantially equalizing flow in the pair of tailpipe sections, said means comprising a reduced diameter cross section in one of the pair of tailpipe sections acting as a flow restricting orifice.
2. An exhaust system for internal combustion engines comprising a single muffler having outlet means, a single tailpipe section connected to and receiving all gas from said outlet means, and a pair of tailpipe sections connected to and receiving all gas from said single tailpipe section, the combined cross sectional area of the pair of sections being greater than the cross sectional area of the single tailpipe section, and means for substantially equalizing flow in the pair of tailpipe sections, one of said pair of tailpipe sections being larger in cross section than the other and the difference in cross section between two sections comprising said means.
3. A dual type exhaust system for an internal combustion engine having two exhaust manifolds comprising a pair of exhaust pipes connected one to each of said manifolds, a single muffler, means connecting both exhaust pipes to said muffler, said muffler having a single outlet, a single tailpipe section connected to and receiving all gas from said outlet, a pair of tailpipe sections connected to and receiving all gas from said single tailpipe section, the combined cross sectional area of the pair of sections being greater than the cross sectional area of the single tailpipe section and the flow through the respective sections of said pair being substantially equal, said muffler having a single inlet and said means comprising a common exhaust pipe connected to and receiving gas from both said exhaust pipes and connected to said single inlet.
4. In an exhaust system for an internal combustion engine, a single muffler having inlet means and outlet means, exhaust pipe means connecting the engine to the inlet means, tailpipe means connected to and receiving all gas from said outlet means, said tailpipe means including a pair of tailpipe sections connected to and receiving all gas from said muffler, and means for substantially equalizing flow in the pair of tailpipesections, said outlet means comprising two separate outlets connected respectively to said tailpipe sections, at least one of said tailpipe sections including flow restricting means to serve as said flow equalizing means.
5. An exhaust system for internal combustion engines comprising a single muffler having outlet means, a single tailpipe section connected to and receiving all gas from said outlet means, and a pair of tailpipe sections connected to and receiving all gas from said single tailpipe section, the combined cross sectional area of the pair of sections being greater than the cross sectional area of the single tailpipe section, one of said tailpipe sections being substantially longer than the other, and means for substantially equalizing flow in the pair of tailpipe sections.
6. A dual type exhaust system for an internal combustion enginehaving two exhaust manifolds comprising a pair of exhaust pipes connected one to each of said manifolds, a single muffler, means connecting both exhaust pipes to said muffler,.said muffler havinga single outlet, a single tailpipe section connected to and receiving all gas from said outlet, a pair of tailpipe sect'ions connected to and receiving all gas from said single tailpipe section, one of said pair of tailpipe sections being substantially longer than the other, the combined cross sectional area of said pair of tailpipe sections being greater than the cross sectional area of the single tailpipe section, and flow restriction means in one of the tailpipe sections whereby the flow through the respective sections of said pair are substantially equal.
7. A dual type exhaust system comprising a single rectangular muffler having a single tubular inlet at one end and a single tubular outlet at the other end, a single exhaust pipe connected to said inlet and a single tailpipe connected to said outlet, a pair of exhaust pipes connected in a Y joint to said single exhaust pipe, and a pair of tailpipes connected in a Y joint to said single tailpipe, the combined areas of said pair of tailpipes being larger than the area of said single tailpipe.
8. In an exhaust system for an internal combustion engine, a single muffler having inlet means and outlet means, exhaust pipe means connecting the engine to the inlet means, tailpipe means connected to and receiving all gas from said outlet means, said tailpipe means including a pair of tailpipe sections connected to and receiving all gas from said muffler, and restriction means in one of the tailpipe sections for substantially equalizing flow in the pair of tailpipe sections.
Claims (8)
1. An exhaust system for internal combustion engines comprising a single muffler having outlet means, a single tailpipe section connected to and receiving all gas from said outlet means, and a pair of tailpipe sections coNnected to and receiving all gas from said single tailpipe section, the combined cross sectional area of the pair of sections being greater than the cross sectional area of the single tailpipe section, and means for substantially equalizing flow in the pair of tailpipe sections, said means comprising a reduced diameter cross section in one of the pair of tailpipe sections acting as a flow restricting orifice.
2. An exhaust system for internal combustion engines comprising a single muffler having outlet means, a single tailpipe section connected to and receiving all gas from said outlet means, and a pair of tailpipe sections connected to and receiving all gas from said single tailpipe section, the combined cross sectional area of the pair of sections being greater than the cross sectional area of the single tailpipe section, and means for substantially equalizing flow in the pair of tailpipe sections, one of said pair of tailpipe sections being larger in cross section than the other and the difference in cross section between two sections comprising said means.
3. A dual type exhaust system for an internal combustion engine having two exhaust manifolds comprising a pair of exhaust pipes connected one to each of said manifolds, a single muffler, means connecting both exhaust pipes to said muffler, said muffler having a single outlet, a single tailpipe section connected to and receiving all gas from said outlet, a pair of tailpipe sections connected to and receiving all gas from said single tailpipe section, the combined cross sectional area of the pair of sections being greater than the cross sectional area of the single tailpipe section and the flow through the respective sections of said pair being substantially equal, said muffler having a single inlet and said means comprising a common exhaust pipe connected to and receiving gas from both said exhaust pipes and connected to said single inlet.
4. In an exhaust system for an internal combustion engine, a single muffler having inlet means and outlet means, exhaust pipe means connecting the engine to the inlet means, tailpipe means connected to and receiving all gas from said outlet means, said tailpipe means including a pair of tailpipe sections connected to and receiving all gas from said muffler, and means for substantially equalizing flow in the pair of tailpipe sections, said outlet means comprising two separate outlets connected respectively to said tailpipe sections, at least one of said tailpipe sections including flow restricting means to serve as said flow equalizing means.
5. An exhaust system for internal combustion engines comprising a single muffler having outlet means, a single tailpipe section connected to and receiving all gas from said outlet means, and a pair of tailpipe sections connected to and receiving all gas from said single tailpipe section, the combined cross sectional area of the pair of sections being greater than the cross sectional area of the single tailpipe section, one of said tailpipe sections being substantially longer than the other, and means for substantially equalizing flow in the pair of tailpipe sections.
6. A dual type exhaust system for an internal combustion engine having two exhaust manifolds comprising a pair of exhaust pipes connected one to each of said manifolds, a single muffler, means connecting both exhaust pipes to said muffler, said muffler having a single outlet, a single tailpipe section connected to and receiving all gas from said outlet, a pair of tailpipe sections connected to and receiving all gas from said single tailpipe section, one of said pair of tailpipe sections being substantially longer than the other, the combined cross sectional area of said pair of tailpipe sections being greater than the cross sectional area of the single tailpipe section, and flow restriction means in one of the tailpipe sections whereby the flow through the respective sections of said pair are substantially equal.
7. A dual type exhaust system comprising a single rectanGular muffler having a single tubular inlet at one end and a single tubular outlet at the other end, a single exhaust pipe connected to said inlet and a single tailpipe connected to said outlet, a pair of exhaust pipes connected in a Y joint to said single exhaust pipe, and a pair of tailpipes connected in a Y joint to said single tailpipe, the combined areas of said pair of tailpipes being larger than the area of said single tailpipe.
8. In an exhaust system for an internal combustion engine, a single muffler having inlet means and outlet means, exhaust pipe means connecting the engine to the inlet means, tailpipe means connected to and receiving all gas from said outlet means, said tailpipe means including a pair of tailpipe sections connected to and receiving all gas from said muffler, and restriction means in one of the tailpipe sections for substantially equalizing flow in the pair of tailpipe sections.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17777371A | 1971-09-03 | 1971-09-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3739873A true US3739873A (en) | 1973-06-19 |
Family
ID=22649936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00177773A Expired - Lifetime US3739873A (en) | 1971-09-03 | 1971-09-03 | Dual outlet exhaust system |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3739873A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070045041A1 (en) * | 2005-02-11 | 2007-03-01 | Jan Krueger | Muffler for an exhaust system |
| US20070284186A1 (en) * | 2006-06-09 | 2007-12-13 | Arvin Technologies, Inc. | Exhaust system |
| US20080110693A1 (en) * | 2006-10-30 | 2008-05-15 | Yamaha Hatsudoki Kabushiki Kaisha | Exhaust System for Motorcycle |
| US7854290B1 (en) | 2005-06-16 | 2010-12-21 | Polaris Industries Inc. | ATV with dual silencers |
| DE10333096B4 (en) * | 2002-08-02 | 2012-03-29 | General Motors Corp. | Vehicle exhaust system with length-compensating silencer |
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| US1949667A (en) * | 1932-05-07 | 1934-03-06 | Transiskus Theodore | Exhaust silencer |
| US2047443A (en) * | 1936-03-09 | 1936-07-14 | Buffalo Pressed Steel Company | Muffler |
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| GB481480A (en) * | 1937-07-02 | 1938-03-11 | Robert Desmond Parker | Improvements in exhaust silencers for internal combustion engines |
| US2297046A (en) * | 1939-08-25 | 1942-09-29 | Maxim Silencer Co | Means for preventing shock excitation of acoustic conduits or chambers |
| US2305946A (en) * | 1937-09-07 | 1942-12-22 | Gen Motors Corp | Internal combustion engine |
| DE1035973B (en) * | 1955-08-19 | 1958-08-07 | Maschf Augsburg Nuernberg Ag | Exhaust sound absorption system for multi-cylinder internal combustion engines |
| US2881851A (en) * | 1954-09-24 | 1959-04-14 | Willsea Jasper | Apparatus for silencing the exhaust of internal combustion engines |
| US2888001A (en) * | 1955-12-02 | 1959-05-26 | Gen Motors Corp | Induction heating means |
| US2940249A (en) * | 1955-10-25 | 1960-06-14 | Volkswagenwerk Ag | Exhaust head for internal combustion engines |
| US2991160A (en) * | 1958-03-19 | 1961-07-04 | California Research Corp | Engine exhaust gas purifying system |
| GB923492A (en) * | 1958-05-03 | 1963-04-10 | Joseph Roy Conway | Device for fitting to exhaust systems for internal combustion engines of motor vehicles |
| US3166150A (en) * | 1961-02-17 | 1965-01-19 | William H Phelps | Engine exhaust silencer |
| US3317001A (en) * | 1966-05-16 | 1967-05-02 | Walker Mfg Co | Muffler |
| US3488723A (en) * | 1966-07-05 | 1970-01-06 | Owens Corning Fiberglass Corp | Acoustical material for high temperature application |
-
1971
- 1971-09-03 US US00177773A patent/US3739873A/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE428695C (en) * | 1924-10-26 | 1926-05-10 | Jakob Wagner | Silencers on explosion machines |
| US1949667A (en) * | 1932-05-07 | 1934-03-06 | Transiskus Theodore | Exhaust silencer |
| DE647118C (en) * | 1934-12-14 | 1937-06-28 | Alfred Reinsch Dr Ing | Silencer for two-stroke internal combustion engines of motorcycles with two cylinders with one outlet each or with one cylinder and two outlets |
| US2047443A (en) * | 1936-03-09 | 1936-07-14 | Buffalo Pressed Steel Company | Muffler |
| GB481480A (en) * | 1937-07-02 | 1938-03-11 | Robert Desmond Parker | Improvements in exhaust silencers for internal combustion engines |
| US2305946A (en) * | 1937-09-07 | 1942-12-22 | Gen Motors Corp | Internal combustion engine |
| US2297046A (en) * | 1939-08-25 | 1942-09-29 | Maxim Silencer Co | Means for preventing shock excitation of acoustic conduits or chambers |
| US2881851A (en) * | 1954-09-24 | 1959-04-14 | Willsea Jasper | Apparatus for silencing the exhaust of internal combustion engines |
| DE1035973B (en) * | 1955-08-19 | 1958-08-07 | Maschf Augsburg Nuernberg Ag | Exhaust sound absorption system for multi-cylinder internal combustion engines |
| US2940249A (en) * | 1955-10-25 | 1960-06-14 | Volkswagenwerk Ag | Exhaust head for internal combustion engines |
| US2888001A (en) * | 1955-12-02 | 1959-05-26 | Gen Motors Corp | Induction heating means |
| US2991160A (en) * | 1958-03-19 | 1961-07-04 | California Research Corp | Engine exhaust gas purifying system |
| GB923492A (en) * | 1958-05-03 | 1963-04-10 | Joseph Roy Conway | Device for fitting to exhaust systems for internal combustion engines of motor vehicles |
| US3166150A (en) * | 1961-02-17 | 1965-01-19 | William H Phelps | Engine exhaust silencer |
| US3317001A (en) * | 1966-05-16 | 1967-05-02 | Walker Mfg Co | Muffler |
| US3488723A (en) * | 1966-07-05 | 1970-01-06 | Owens Corning Fiberglass Corp | Acoustical material for high temperature application |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10333096B4 (en) * | 2002-08-02 | 2012-03-29 | General Motors Corp. | Vehicle exhaust system with length-compensating silencer |
| US20070045041A1 (en) * | 2005-02-11 | 2007-03-01 | Jan Krueger | Muffler for an exhaust system |
| US7854290B1 (en) | 2005-06-16 | 2010-12-21 | Polaris Industries Inc. | ATV with dual silencers |
| US20070284186A1 (en) * | 2006-06-09 | 2007-12-13 | Arvin Technologies, Inc. | Exhaust system |
| US7650965B2 (en) * | 2006-06-09 | 2010-01-26 | Emcon Technologies Llc | Exhaust system |
| US20080110693A1 (en) * | 2006-10-30 | 2008-05-15 | Yamaha Hatsudoki Kabushiki Kaisha | Exhaust System for Motorcycle |
| US7779963B2 (en) * | 2006-10-30 | 2010-08-24 | Yamaha Hatsudoki Kabushiki Kaisha | Exhaust system for motorcycle |
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