GB2219951A - Process for manufacturing fuel manifold - Google Patents
Process for manufacturing fuel manifold Download PDFInfo
- Publication number
- GB2219951A GB2219951A GB8910980A GB8910980A GB2219951A GB 2219951 A GB2219951 A GB 2219951A GB 8910980 A GB8910980 A GB 8910980A GB 8910980 A GB8910980 A GB 8910980A GB 2219951 A GB2219951 A GB 2219951A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hole
- rod
- semifinished
- fitting
- fact
- 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- Withdrawn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
- 239000000446 fuel Substances 0.000 title claims description 24
- 238000000034 method Methods 0.000 title claims description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 238000003754 machining Methods 0.000 claims description 3
- 230000000284 resting effect Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 101100442804 Streptomyces coelicolor (strain ATCC BAA-471 / A3(2) / M145) def4 gene Proteins 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M1/00—Carburettors with means for facilitating engine's starting or its idling below operational temperatures
- F02M1/08—Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling becoming operative or inoperative automatically
- F02M1/14—Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling becoming operative or inoperative automatically dependent on pressure in combustion-air- or fuel-air-mixture intake
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M1/00—Carburettors with means for facilitating engine's starting or its idling below operational temperatures
- F02M1/08—Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling becoming operative or inoperative automatically
- F02M1/10—Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling becoming operative or inoperative automatically dependent on engine temperature, e.g. having thermostat
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Means For Warming Up And Starting Carburetors (AREA)
Description
2 9 PROCESS FOR THE MANUFACTURE OF A FUEL MANIFOLD FOR AN INTERNAL
COMBUSTION ENGINE FUEL SUPPLY SYSTEM The present invention relates to a process for the manufacture of a fuel manifold for an internal combustion engine fuel supply system, and designed te supply fuel to a number of injectors.
The process according to the present invention is partiCLIlarly suitable for manufacturing manifolds of the type described in a patent application entitled "Fuel manifold for an internal combustion engine fuel supply system" filed by the present Applicant on 13 May 1988.
Said manifold comprises an elongated semifinished metal part having at least an axial a number of first cup-shaped fittings, each def4,-nlng a housing for a respective injector communicating with said axial hole on said semifinished part; and at least a pair of second fittings, each designed to connect one end of said hole to members and piping on the fuel supply system.
2 The aim of the present invention is to provide a process for the manufacture of a fuel manifold for an internal combustion engine fuel supply system, designed to supply fuel to a number of injectors and substantially com- prising an elongated semifinished metal part having at least an axial hole; a number of first cup-shaped fittings, each defining a housing for a respective injector communicating with said axial hole in said semifinished part; and at least a pair of second fittings, each desianed to connect one end of said hole to members and piping on said fuel supply system; characterised by the fact that it comprises mechanicul mach-ining operations for:
forming the end of each said first f-4tting into a ShO-At -cating with said hous rod having an axial hole cominun ing; forming on said semifinished metal part a series of seats, each communicating with said axial hole in said semifinished part; inserting said rod of each said first fitting inside a respective seat on said semifinished part; permanently deforming each said rod against a respective said seat so as to secure said fitting to said semifinished metal part.
The process according to the present invention will Y 3 be described by way of example with reference to the accompanying drawings, in which Fig.1 shows a side view of the manifold according to the present invention; Fig.2 shows a section of the Fig.1 manifold along line II-II; Fig-3 shows a section of a number of parts on the manifold at one stage of the process for manufacturing the Fig.1 manifold according to the present invention; Fig-4 shows the same parts on the manifold at an alternative maufacturing stage; Fig-5 shows a section of the connection between the fittings and semifinished part at the end of the process. The process according to the present invention may be employed for manufacturing manifolds of the type shown in Fig.], which is designed to supply fuel to a number of injectors I forming part of an internal combuFtion engine fuel supply system.
Said manifold, which is described in a patent applica20 tion entitled "Fuel manifold for an internal combustion engine fuel supply system" filed on 13 May 1988, substantially comprises an elongated semifinished metal part 2 having an axial hole 3 and a continuous tab 4 projecting from one side of semifinished part 2.
As shown in Fig.2, semifinished part 2 presents a substantially constant cross section, and is extruded, conveniently from aluminium or aluminium alloy.
Said manifold also comprises a number of first fittings 5 designed to connect axial hole 3 on semifinished part 2 to injectors 1, the axis of each said injector 1 being incident with the axis of hole 3. In particular, the axis of each said fitting 5 forms a 900 angle with the axis of said hole 3.
Said manifold also comprises at least a pair of second 5 fittings 6, each having an axis coincident with that of hole 3, and designed to connect one end-of hole 3 to members and piping on the fuel supply system. Tab 4 may present holes for connecting the manifold to the crankcase, e.g. by means of threaded members.
As shown in Fig.1, each fitting is cup-shaped and defines a substantially cylindrical housing 7 for the top end of an injector 1.
The process according to the present invention relates to the connection of fittings 5 to semifinished part 2_ in such a manner as to form an assembly wherein said connection presents the same mechanical resistance a.!s an assembly formed in one piece, and also provides for perfect sealing for preventing fuel leakage.
According to the present process, the end of each fitting 20 5 is formed into a rod 8 having an axial hole 9 communicating with housing 7. This may be achieved via chipforming machining (turning and drilling) or via permanent deformation.
According to the present process, a series of seats 25 12, each designed to receive a respective rod 8, is formed, e.g. drilled, in semifi nished part 2.
Rod 8 of ea-ch fitting 5 is then inserted inside a respec tive seat 12 2, and permanently deformed against the surface of the same. This is done by fitting through hole 9 on rod 8 a deforming tool 10 (Fig.3) larger than the hole itself, and conveniently presenting a head 14 connected to a bar 13. The maximum diameter of head 14 is larger than that of hole 9, and is so selected as to provide for a given interference between 5 head 14 and hole 9.
Before deforming rod 81 bar 13 is inserted inside hole 9 and housing 7 (Fig-3) so as to rest head 14 on the top edge of rod 8. Rod 8 is then inserted inside seat 12, with the bottom edge 11 of fitting 5 resting on an appropriate locating surface (not shown). When pull is exerted on bar 13 in the direction of the arrow in Fig-3, head 14 is pulled through hole 9, thus deforming rod 8 and force fitting it against seat 12. Moreover, head 14 also provides (Fig-5) for turning the edge of rod 8 outwards, thus forming a collar 12a for further locking fitting 5 to semifinished part 2. Subsequent to permanent deformation of rod 8, tool 10 is pulled out downwards through hole 9 and housing (Fig-3). Deforming tool 10 may consist simply of a ball larger in diameter than hole 9 (Fig.4), in which case, rod 8 may be permanently deformed by forcing said ball through hole 9 into hole 3 of semifinished part 2. This may be done using a thrusting tool (not shown) designed to exert thrust on said ball in the direction of the arrow in Fig-4.
Radial deformation of rod 8 produces the connection shown in Fig-5, which obviously presents excellent mechanical resistance and perfect sealing of the fuel through hole 3 in the manifold. Moreover, the operations involved in said process may be performed quickly and 6 easily using low-cost tools.
To those skilled in the art it will be clear that changes may be made to the stages in the process as described and illustrated herein without, however, departing from the scope of the present invention.
Q, a 1
Claims (1)
- A process for the manufacture of a fuel manifold for an internal combustion engine fuel supply system, designed to supply fuel to a number of injectors and substantially comprising anelongated semifinished metal part having at least an axial hole; a number of first cup-shaped fittings each defining a housing for a respective injector communicating with said axial hole in said semifinished part; and at least a pair of second fittings each designed to connect one end of said hole to members and piping on said fuel 6upply system; characterised by the fact that it comprises mechanical machining operations for:forming the end of each said first fitting into a short rod having an axial hole communicat- ing with said housing forming on said semifinished metal part a series of seats each communicating with said axial hole in said semifinished part inserting said rod of each said first fitting inside a respective seat on said semifinished part permanently deforming each said rod against a respec tive said seat so as to secure said fitting to said semifinished metal part 1; 2) - A process as claimed in Claim 1, characterised by the fact that said permanent deformation of said rod is performed by inserting inside said hole 8 on said rod a deforming tool larger than said hole A process as claimed in Claim 2, characterised by the fact that said deforming tool presents a head connected to a bar and larger than said hole on said rod; said bar being inserted inside said hole so as to position said head over said rod; said rod being inserted inside a respective said seat and., with said first fitting resting on an appropriate locating surface, sufficient force being exerted on said bar to force said head through said hole and so permanently deform said rod 4) - A process as claimed in Claim 2, characterised by the fact that said tool comprises a ball larger in diameter than said hole sufficient force being exerted on said ball, via an appropriate tool, to force said ball through said hole on said rod and so permanently deform the same.5) - A process as claimed in one of the foregoing Claims, and substantially as described and illustrated herein with reference to the accompanying drawings.Published 1989 atThe Patent Office. State House. 66'71 FilghHolborn. London WCIR4TP- Further copies maybe obtained from The Patent OfficeSales Branch, St Mary Cray. Orpington, Kent BR5 3RD. Printed by Multiplex techniques ltd, St Mary Cray, Kent, Con. 1/87
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT67449/88A IT1219301B (en) | 1988-05-13 | 1988-05-13 | CARBURETOR WITH AUTOMATIC STARTER FOR AN INTERNAL COMBUSTION ENGINE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8910980D0 GB8910980D0 (en) | 1989-06-28 |
| GB2219951A true GB2219951A (en) | 1989-12-28 |
Family
ID=11302474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8910980A Withdrawn GB2219951A (en) | 1988-05-13 | 1989-05-12 | Process for manufacturing fuel manifold |
Country Status (5)
| Country | Link |
|---|---|
| DE (1) | DE3915443A1 (en) |
| ES (1) | ES2014095A6 (en) |
| FR (1) | FR2631388A1 (en) |
| GB (1) | GB2219951A (en) |
| IT (1) | IT1219301B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2330623A (en) * | 1997-10-22 | 1999-04-28 | Daimler Benz Ag | Common-rail fuel injection system for an i.c. engine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1493946A (en) * | 1975-09-24 | 1977-11-30 | Rolls Royce Motors Ltd | Method of and swaging tool for producing a joint |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2319595A (en) * | 1929-11-14 | 1943-05-18 | Bendix Aviat Corp | Engine starting device |
| GB412262A (en) * | 1931-12-28 | 1934-06-25 | Eclipse Machine Co | Improvements in throttle control for internal combustion engines |
| US2393290A (en) * | 1933-02-09 | 1946-01-22 | Bendix Aviat Corp | Carburetor |
| BE510627A (en) * | 1937-03-31 | |||
| US3489127A (en) * | 1967-02-15 | 1970-01-13 | Toyota Motor Co Ltd | Device for preventing an automobile engine from stalling |
| FR2470255A2 (en) * | 1979-11-23 | 1981-05-29 | Sibe | IMPROVEMENTS ON CARBURETORS COMPRISING AN AUXILIARY STARTING DEVICE |
| DE3127261C1 (en) * | 1981-07-10 | 1983-02-03 | Pierburg Gmbh & Co Kg, 4040 Neuss | Carburetor |
| JPS6181529A (en) * | 1984-09-27 | 1986-04-25 | Honda Motor Co Ltd | engine starting device |
| IT1195105B (en) * | 1986-07-29 | 1988-10-12 | Weber Spa | CARBURETOR FOR AN INTERNAL COMBUSTION ENGINE |
-
1988
- 1988-05-13 IT IT67449/88A patent/IT1219301B/en active
-
1989
- 1989-05-11 DE DE3915443A patent/DE3915443A1/en not_active Withdrawn
- 1989-05-12 FR FR8906256A patent/FR2631388A1/en not_active Withdrawn
- 1989-05-12 GB GB8910980A patent/GB2219951A/en not_active Withdrawn
- 1989-05-12 ES ES8901622A patent/ES2014095A6/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1493946A (en) * | 1975-09-24 | 1977-11-30 | Rolls Royce Motors Ltd | Method of and swaging tool for producing a joint |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2330623A (en) * | 1997-10-22 | 1999-04-28 | Daimler Benz Ag | Common-rail fuel injection system for an i.c. engine |
| GB2330623B (en) * | 1997-10-22 | 1999-12-08 | Daimler Benz Ag | Fuel injection system of an internal combustion engine |
| US6009855A (en) * | 1997-10-22 | 2000-01-04 | Daimlerchrysler Ag | Fuel injection system for a multicylinder internal combustion engine with a fuel supply line serving as high pressure storage device |
Also Published As
| Publication number | Publication date |
|---|---|
| IT8867449A0 (en) | 1988-05-13 |
| ES2014095A6 (en) | 1990-06-16 |
| IT1219301B (en) | 1990-05-03 |
| DE3915443A1 (en) | 1989-12-14 |
| GB8910980D0 (en) | 1989-06-28 |
| FR2631388A1 (en) | 1989-11-17 |
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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) |