GB2091341A - Cooling exhaust manifolds - Google Patents
Cooling exhaust manifolds Download PDFInfo
- Publication number
- GB2091341A GB2091341A GB8101843A GB8101843A GB2091341A GB 2091341 A GB2091341 A GB 2091341A GB 8101843 A GB8101843 A GB 8101843A GB 8101843 A GB8101843 A GB 8101843A GB 2091341 A GB2091341 A GB 2091341A
- Authority
- GB
- United Kingdom
- Prior art keywords
- exhaust
- tube
- tubes
- passes
- tortuous passage
- 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.)
- Withdrawn
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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
- F01N3/043—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids without contact between liquid and exhaust gases
- F01N3/046—Exhaust manifolds with cooling jacket
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Silencers (AREA)
Abstract
An exhaust manifold, particularly suitable for use on a flame-proofed diesel engine for use in explosive or inflammable atmospheres, such as in mines, comprises a housing 16 having at least one exhaust inlet 19, 20, at least one exhaust outlet 25 and a first tortuous passage for exhaust gas, which may be defined by parallel tubes 10, 11, 12 and 13. There is also a second tortuous passage for cooling fluid, for example defined by tubes 30, 31, 32 and 33. The first and second tortuous passages are arranged so that the exhaust gas and cooling fluid flow in opposite directions over at least a portion of the length of the passages to provide good heat exchange. <IMAGE>
Description
SPECIFICATION
Exhaust manifolds
The invention relates to exhaust manifolds and particularly to exhaust manifolds for use on flame proofed diesel engines for use in explosive or inflammable atmospheres, e.g. in mines.
The invention provides an exhaust manifold comprising a housing having at least one exhaust inlet, at least one exhaust outlet, and a first tortuous passage leading from the exhaust inlet to the exhaust outlet, the housing including a second tortuous passage for cooling fluid, the first and second tortuous passages passing in opposite directions over at least a portion of their length, to obtain good heat exchange between the exhaust gases and the cooling fluid.
There may be several (e.g. two or more) exhaust inlets, a single exhaust outlet, a single inlet for cooling fluid, and a single outlet for cooling fluid.
Preferably the second tortuous passage passes inside the first tortuous passage for a substantial portion of its length.
The second tortuous passage is preferably in communication with a cooling jacket surrounding the first tortuous passage.
The first tortuous passage may comprise four generally cylindrical parallel exhaust tubes arranged in two pairs, one above the other, the tubes being interconnected such that the first tortuous passage extends from the or each exhaust inlet into one of the lower tubes, passes to one end of the said one tube, then passes up into one end of a second tube immediately above the said one tube, then passes to the opposite end of the second tube, then passes across into one end of a third tube, then passes to the opposite end of the third tube, then passes down into one end of the fourth tube, then passes to the opposite end of the fourth tube, and finally emerges through the exhaust outlet.
Each upper tube may be welded to the tube below to form a unit which is separated from the adjacent unit by a partition wall, a crossover passage passing from one unit to the other through an aperture in the partition wall.
The second tortuous passage may comprise four smaller diameter cooling tubes, each tube extending inside one of the four exhaust tubes.
Preferably the ends of the cooling tubes extend through plates blanking off the ends of the exhaust tubes, to communicate with a cooling jacket surrounding the exhaust tubes.
The invention includes an internal combustion engine fitted with an exhaust manifold as defined above.
By way of example, a specific embodiment of exhaust manifold according to the invention will now be described, with reference to the accompanying drawings, in which: Figure 1 is a vertical longitudinal cross-section through an embodiment of exhaust manifold according to the invention, taken on line I-I of
Figure 4;
Figure 2 is a transverse cross-section on line Il-Il of Figure 1;
Figure 3 is a longitudinal cross-section on line Ill-Ill of Figure 4;
Figure 4 is a transverse cross-section on line IV-lV of Figure 1;
Figure 5 is a transverse cross-section on line V-V of Figure 4; and
Figure 6 is a view on arrow VI of Figure 2.
The exhaust manifold shown in the Figures provides a tortuous passage for exhaust gases, the passage being principally defined by four parallel tubes 10, 11, 12, and 13. As best seen in Figure 4.
tubes 10 and 11 are welded together to form an inlet tube and tubes 12 and 13 are welded together to form an outlet unit. The ends of the tubes are blanked off by plates 14 and 1 5 and plate 14 connects the tubes to an outer water jacket 1 6. A partition wall 1 7 separates the inlet unit from the outlet unit, except for an aperture 1 8 through the partition wall as shown in Figure 3.
The manifold has two exhaust inlets 19 and 20 which communicate one with each end of the tube 11, as shown in Figures 1 and 2. When exhaust gases enter through these inlets, they travel to the left hand end of tube 11 as shown in Figure 1, and then pass through an aperture 21 into the left hand end of the tube 10. They then travel along tube 10 to the right hand end as viewed in
Figure 1, and they then pass through the crossover passage 23, shown in Figures 2 and 3, into the tube 12. The crossover passage 23 passes through the aperture 1 8 in the partition wall 1 7.
The gases then pass back along tube 12 and down through an aperture 24 shown in Figure 5 to tube 13. Finally they pass along tube 13 and out through the exhaust outlet 25.
The cooling jacket 1 6 defines five chambers, namely a lower chamber 26, two first end chambers 27 and 27a, adjacent to the plate 14, and two second end chambers 28 and 28a which lie adjacent to the plate 1 5. The chambers 27 and 27a are separated by a partition plate lying in the same plane as plate 1 7 which separates chambers 28 and 28a. The chambers 26 and 27 communicate via an opening 29 shown in
Figure 1.
Inside each of the tubes 10, 11, 12 and 13 is a smaller diameter cooling tube 30, 31, 32 and 33.
The tubes extend through the plates 14 and 15, interconnecting the chambers 27, 27a, 28 and 28a, except for tube 32, which as best seen in
Figure 5, extends through the cooling jacket 16 to the exterior of the exhaust manifold.
The chamber 26 has an inlet 34 for cooling water, and water passing through this inlet 34 travels along the chamber 26 past the exhaust manifold inlets. The water then passes through the opening 29 into the chamber 27. It then passes through the cooling tubes 30 and 31 to the chamber 28, flows around the exterior of the tubes 10 and 1 passes through opening 1 8, and then passes around the exterior of tubes 12 and 13 back to chamber 28a. It then passes through tube 33 to chamber 27a and finally through tube 32 to outlet.
The exhaust manifold forming the subject of this embodiment provides an extremely compact unit which not only incorporates a water jacket to keep the temperature of external surfaces to the low levels required in explosive or inflammable atmospheres, but also combines this function with the efficient cooling of the exhaust gases by means of heat exchange.
The invention is not restricted to the details of the foregoing embodiment.
Claims (10)
1. An exhaust manifold comprising a housing having at least one exhaust inlet, at least one exhaust outlet, and a first tortuous passage leading from the exhaust inlet to the exhaust outlet, the housing including a second tortuous passage for cooling fluid, the first and second tortuous passages passing in opposite directions over at least a portion of their length, to obtain good heat exchange between the exhaust gases and the cooling fluid.
2. An exhaust manifold as claimed in Claim 1, in which there are several exhaust inlets, a single exhaust outlet, a single inlet for cooling fluid, and a single outlet for cooling fluid.
3. An exhaust manifold as claimed in Claim 1 or
Claim 2, in which the second tortuous passage passes inside the first tortuous passage for a substantial portion of its length.
4. An exhaust manifold as claimed in any one of the preceding claims, in which the second tortuous passage is in communication with a cooling jacket surrounding the first tortuous passage.
5. An exhaust manifold as claimed in any one of the preceding claims, in which the first tortuous passage comprises four generally cylindrical parallel exhaust tubes arranged in two pairs, one above the other, the tubes being interconnected such that the first tortuous passage extends from the or each exhaust inlet into one of the lower tubes, passes to one end of the said one tube, then passes up into one end of a second tube immediately above the said one tube, then passes to the opposite end of the second tube, then passes across into one end of the third tube, then passes down into one end of the fourth tube, then passes to the opposite end of the fourth tube, and finally emerges through the exhaust outlet.
6. An exhaust manifold as claimed in Claim 5, in which each upper tube is welded to the tube below to form a unit which is separated from the adjacent unit by a partition wall, a crossover passage passing from one unit to the other through an aperture in the partition wall.
7. An exhaust manifold as claimed in Claim 5 or
Claim 6, in which the second tortuous passage comprises four smaller diameter cooling tubes, each tube extending inside one of the four exhaust tubes.
8. An exhaust manifold as claimed in Claim 7, in which the ends of the cooling tubes extend through plates blanking off the ends of the exhaust tubes, to communicate with a cooling jacket surrounding the exhaust tubes.
9. An exhaust manifold constructed and arranged substantially as herein described, with reference to the accompanying drawings.
10. An internal combustion engine fitted with an exhaust manifold as claimed in any one of the preceding claims.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8101843A GB2091341A (en) | 1981-01-21 | 1981-01-21 | Cooling exhaust manifolds |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8101843A GB2091341A (en) | 1981-01-21 | 1981-01-21 | Cooling exhaust manifolds |
Publications (1)
Publication Number | Publication Date |
---|---|
GB2091341A true GB2091341A (en) | 1982-07-28 |
Family
ID=10519118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8101843A Withdrawn GB2091341A (en) | 1981-01-21 | 1981-01-21 | Cooling exhaust manifolds |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2091341A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5170557A (en) * | 1991-05-01 | 1992-12-15 | Benteler Industries, Inc. | Method of forming a double wall, air gap exhaust duct component |
US5363544A (en) * | 1993-05-20 | 1994-11-15 | Benteler Industries, Inc. | Multi-stage dual wall hydroforming |
US6652337B1 (en) * | 2002-03-15 | 2003-11-25 | Brunswick Corporation | Exhaust system for a marine propulsion engine |
-
1981
- 1981-01-21 GB GB8101843A patent/GB2091341A/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5170557A (en) * | 1991-05-01 | 1992-12-15 | Benteler Industries, Inc. | Method of forming a double wall, air gap exhaust duct component |
US5363544A (en) * | 1993-05-20 | 1994-11-15 | Benteler Industries, Inc. | Multi-stage dual wall hydroforming |
US5475911A (en) * | 1993-05-20 | 1995-12-19 | Wells; Gary L. | Multi-stage dual wall hydroforming |
US6652337B1 (en) * | 2002-03-15 | 2003-11-25 | Brunswick Corporation | Exhaust system for a marine propulsion engine |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |