WO1981002538A1 - Fuel injection valve puller - Google Patents
Fuel injection valve puller Download PDFInfo
- Publication number
- WO1981002538A1 WO1981002538A1 PCT/US1980/000224 US8000224W WO8102538A1 WO 1981002538 A1 WO1981002538 A1 WO 1981002538A1 US 8000224 W US8000224 W US 8000224W WO 8102538 A1 WO8102538 A1 WO 8102538A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- injection valve
- bore
- engine
- threaded
- tool
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/023—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same using screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/0035—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for motor-vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
- B25B27/24—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same mounting or demounting valves
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
Definitions
- This invention relates generally to tools and more particularly to a puller tool for removing injection valves from an engine.
- certain elements may be placed adjacent a cylinder or the like wherein, after a period of use, the element becomes cemented into the cylinder or the like.
- certain types of injection valves used in compression ignition engines ar'e * slidably positioned in the cylinder head of those engines and retained there by a clamp or the like.
- the clamp generally engages a shoulder about the injection valve, and by means of a bolt passing through the clamp and into the cylinder head, the clamp acts as a hold-down for the injection valve.
- small amounts of burned fuel residue such as carbon particles are deposited in the cylinder so that after a prolonged period of use the injection valve becomes "cemented" in the head.
- removal of the valve becomes difficult, if not impossible without the use of some sort of a removal tool.
- the present invention is directed to overcoming one or more of the problems as set forth above.
- an injection valve removal tool is formed of a gripping member defining a first bore, a second bore intersecting the first bore, and a threaded bore having an axis generally parallel to the axis of the first bore.
- the gripping member further defines a shoulder adjacent one end of the first bore capable of engagement with an injection valve.
- a threaded, member threadably engaged in the threaded bore is also included with the tool.
- Figure 1 is a perspective view of a fuel- injection valve puller tool which forms an embodiment of the present invention.
- Figure 2 is an elevational view, partly in section, of the fuel-injection valve puller tool illustrated in Figure 1 shown in conjunction with an injection valve and an engine.
- a puller tool 10 is shown in perspective. This puller tool 10 is particularly appropriate for removing a fuel injection valve 12 (see Figure 2) which has become “cemented” into an engine cylinder head 14 by carbon deposits accumulated about the shank 16 of fuel injection, valve 12.
- a puller tool 10 is comprised of a gripping member 18 which has formed therethrough a pair of angular valve receiving bores including a first bore 20 and a second bore 22.
- Second bore 22 angularly intersects first bore 20 as indicated in Figures 1 and 2 of the drawings. The angle of intersection is generally about 45° although a greater or lesser angle is possible.
- Formed in first bore 20 and adjacent one end 24 is a lip or ledge 26 formed by a counterbore 28 axially aligned with first bore 20.
- a threaded bore 30 is formed in gripping member 18 laterally displaced from and having an axis generally parallel to first bore 20. Threaded bore 30 has received therein a threaded member such as bolt 32 which may engage a pivotally attached wear plate or shoe 34 to be positioned on cylinder head 14. It is important to note that second bore 22 is of sufficient size to be positioned over the largest diameter of fuel injection valve 12 which in the instance illustrated in Figure 2 includes a hexagonal member such as nut 36. At the same time, in the particular embodiment illustrated in Figure 2, first bore 20 must be of sufficient diameter to receive therethrough the outwardly extending portion of fuel injection valve 12, while the ledge 26 should be of sufficient size to engage the shoulder 38 normally found on injection valves of this type. Similar shoulders or reliefs 39 are used for the purpose of clamping the injection valve to cylinder head 14.
- This puller tool is particularly adaptable for removing injection valves such as injection valve 12 from a cylinder head 14.
- injection valves such as injection valve 12 are of the type slidably positioned in cylinder head 14 and held therein by a clamp 40.
- Fuel is passed through the injection valve in a manner well known in the art, which will not be further discussed here. Ignition of the fuel in the cylinder 42 normally results in some formation of carbon. Consequently, a carbon dam 44 may be found on the shank 16 of the fuel injection valve 12. During use, the carbon dam 44 may become worn and carbon is then free to pass by the dam 44. When this occurs, it becomes difficult to remove the fuel injection valve 12 from the cylinder head 14 without some assistance.
- puller tool 10 may be positioned about fuel injection valve 12 as shown in phantom in Figure 2. This orientation is preferably about 45 degrees from the ultimate usable orientation of the tool when it is positioned for removal of the valve.
- the tool is then passed downwardly about the upper or outwardly extending portion of fuel injection valve 12 so that the ledge 26 may engage shoulder 38.
- This requires rotation of the tool which also positions the threaded member or bolt 32 generally parallel to the fuel injection valve 12.
- the bolt 32 may then engage cylinder head 14 or shoe 34 may be placed between head 14 and bolt 32.
- clamp 40 must first be removed before an attempt is made to remove the fuel injection valve.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
A fuel injection valve removal tool (10) has a pair of angularly intersecting valve receiving bores (20, 22) and an offset threaded member (32). The tool (10) passes over an injection valve (12) so that a ledge (26) in one of the bores (20) may engage the injection valve (12) while the threaded member (32) engages the engine. Rotation of the threaded member (32) results in removal of the injection valve (12) from the engine (12).
Description
Description
Fuel Injection Valve Puller
Technical Field
This invention relates generally to tools and more particularly to a puller tool for removing injection valves from an engine.
Background Art
In certain applications, particularly in engines, certain elements may be placed adjacent a cylinder or the like wherein, after a period of use, the element becomes cemented into the cylinder or the like. In particular, certain types of injection valves used in compression ignition engines ar'e * slidably positioned in the cylinder head of those engines and retained there by a clamp or the like. The clamp generally engages a shoulder about the injection valve, and by means of a bolt passing through the clamp and into the cylinder head, the clamp acts as a hold-down for the injection valve. During operation of the engine, small amounts of burned fuel residue such as carbon particles are deposited in the cylinder so that after a prolonged period of use the injection valve becomes "cemented" in the head. Thus, removal of the valve becomes difficult, if not impossible without the use of some sort of a removal tool.
In the past, it has been the practice to use an impact tool to impart a shock or the like to the injector nozzle, thereby breaking the carbon seal resulting from deposits during operation of the engine. Use of an impact tool requires sufficient
space adjacent the engine to operate the impacting portion of the tool. Furthermore, a slide hammer-type impact tool or a simple impact tool can, in certain cases, cause damage to an injector valve that ordinarily could be cleaned and reused.
The present invention is directed to overcoming one or more of the problems as set forth above.
Disclosure of Invention
In one aspect of the invention, an injection valve removal tool is formed of a gripping member defining a first bore, a second bore intersecting the first bore, and a threaded bore having an axis generally parallel to the axis of the first bore. The gripping member further defines a shoulder adjacent one end of the first bore capable of engagement with an injection valve. Also included with the tool is a threaded, member threadably engaged in the threaded bore.
In injection valve removal situations wherein the valve member is slidably positioned in the engine cylinder head, carbon deposits quite frequently "cement" or "freeze" the injection valve into the cylinder head. Removal of the injection valve in the past has generally been accomplished by an impact tool to break the valve away from the carbon deposits.
However, such tools have the obvious disadvantage of damaging injection valves that conceivably need only minor repairs. Accordingly, to be able to remove an injection valve without impact to the valve is desirable. This invention accomplishes this through the use of a puller tool actuated by a threadable member engaging the engine head.
Brief Description of the Drawing
Figure 1 is a perspective view of a fuel- injection valve puller tool which forms an embodiment of the present invention. Figure 2 is an elevational view, partly in section, of the fuel-injection valve puller tool illustrated in Figure 1 shown in conjunction with an injection valve and an engine.
Best Mode for Carrying Out the Invention Referring to Figure 1, a puller tool 10 is shown in perspective. This puller tool 10 is particularly appropriate for removing a fuel injection valve 12 (see Figure 2) which has become "cemented" into an engine cylinder head 14 by carbon deposits accumulated about the shank 16 of fuel injection, valve 12.
A puller tool 10 is comprised of a gripping member 18 which has formed therethrough a pair of angular valve receiving bores including a first bore 20 and a second bore 22. Second bore 22 angularly intersects first bore 20 as indicated in Figures 1 and 2 of the drawings. The angle of intersection is generally about 45° although a greater or lesser angle is possible. Formed in first bore 20 and adjacent one end 24 is a lip or ledge 26 formed by a counterbore 28 axially aligned with first bore 20.
A threaded bore 30 is formed in gripping member 18 laterally displaced from and having an axis generally parallel to first bore 20. Threaded bore 30 has received therein a threaded member such as bolt 32 which may engage a pivotally attached wear plate or shoe 34 to be positioned on cylinder head 14.
It is important to note that second bore 22 is of sufficient size to be positioned over the largest diameter of fuel injection valve 12 which in the instance illustrated in Figure 2 includes a hexagonal member such as nut 36. At the same time, in the particular embodiment illustrated in Figure 2, first bore 20 must be of sufficient diameter to receive therethrough the outwardly extending portion of fuel injection valve 12, while the ledge 26 should be of sufficient size to engage the shoulder 38 normally found on injection valves of this type. Similar shoulders or reliefs 39 are used for the purpose of clamping the injection valve to cylinder head 14.
Industrial Applicability
This puller tool is particularly adaptable for removing injection valves such as injection valve 12 from a cylinder head 14. Normally, injection valves such as injection valve 12 are of the type slidably positioned in cylinder head 14 and held therein by a clamp 40. Fuel is passed through the injection valve in a manner well known in the art, which will not be further discussed here. Ignition of the fuel in the cylinder 42 normally results in some formation of carbon. Consequently, a carbon dam 44 may be found on the shank 16 of the fuel injection valve 12. During use, the carbon dam 44 may become worn and carbon is then free to pass by the dam 44. When this occurs, it becomes difficult to remove the fuel injection valve 12 from the cylinder head 14 without some assistance.
Accordingly, puller tool 10 may be positioned about fuel injection valve 12 as shown in phantom in Figure 2. This orientation is preferably about 45 degrees from the ultimate usable orientation of the tool when it is positioned for removal of the valve. The tool is then passed downwardly about the upper or outwardly extending portion of fuel injection valve 12 so that the ledge 26 may engage shoulder 38. This, of course, requires rotation of the tool which also positions the threaded member or bolt 32 generally parallel to the fuel injection valve 12. The bolt 32 may then engage cylinder head 14 or shoe 34 may be placed between head 14 and bolt 32. By rotation of . bolt 32, ledge 26 comes up firm against the injection valve while continued rotation of the bolt 32 results in withdrawal of the injection valve from the .cylinder head with a minimum of effort thereby eliminating or minimizing damage to the injection valve. Of course, it should be understood that clamp 40 must first be removed before an attempt is made to remove the fuel injection valve.
Other aspects, objects, and advantages of this invention can be obtained from a study of the drawings, the disclosure and the appended claims.
Claims
1. An injection valve removal tool comprising: a gripping member (18) having a first bore (20), a second bore (22), said second bore (22) angularly intersecting said first bore (20); and a threaded bore (30) having an axis generally parallel to the axis of said first bore (20), said gripping member (18) further having a ledge (26) in said first bore (20) adapted for engagement with an injection valve (12); and a threaded member (32) threadably engaged in said threaded bore.
2. The injection valve removal tool' o*f claim 1 wherein said first (20) and said second (22) bores intersect generally at a 4.5° angle.
3. The injection valve removal tool of claim 1 wherein said second bore (22) has a diameter generally greater than the largest diameter of the ' injection valve (12).
4. The injection valve removal tool of claim 1 in combination with an engine (14) and an injection valve (12), wherein said threaded member (32) is engagable with said engine (14) and said ledge (26) engagable" with said injection valve (12).
C?. WI
5. An injection valve removal tool in combination with an injection valve (12) for use in an engine (14), the injection valve removal tool comprising: a gripping member (18) defining a first bore
(20) and a second bore (22), said second bore (22) angularly intersecting said first bore (20), and a threaded bore (30) having an axis generally parallel to the axis of said first bore (20), said gripping member (18) further defining a ledge (26) in said first bore (20) adapted for engagement with said injection valve (12); and a threaded member (32) threadably disposed in said threaded bore (30) and engagable with said engine (14).
"BUREAU* > OMPI
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US1980/000224 WO1981002538A1 (en) | 1980-03-03 | 1980-03-03 | Fuel injection valve puller |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US1980/000224 WO1981002538A1 (en) | 1980-03-03 | 1980-03-03 | Fuel injection valve puller |
| WOUS80/00224 | 1980-03-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1981002538A1 true WO1981002538A1 (en) | 1981-09-17 |
Family
ID=22154221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1980/000224 WO1981002538A1 (en) | 1980-03-03 | 1980-03-03 | Fuel injection valve puller |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO1981002538A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000031410A1 (en) * | 1998-11-20 | 2000-06-02 | Robert Bosch Gmbh | Device for disassembling a fuel injection valve |
| WO2000036295A1 (en) * | 1998-12-14 | 2000-06-22 | Robert Bosch Gmbh | Assembly device for assembling and dismantling a fuel injection valve |
| WO2000052327A1 (en) * | 1999-02-27 | 2000-09-08 | Robert Bosch Gmbh | Mounting/demounting device for mounting and/or demounting a fuel injection valve |
| EP2008774A2 (en) * | 2007-06-28 | 2008-12-31 | Klann Spezial-Werkzeugbau GmbH | Device for extracting an injection nozzle |
| DE202010009355U1 (en) | 2010-06-22 | 2010-10-07 | Werkzeug Pichler Gesellschaft M.B.H. & Co. Kg | Dismantling device for dismantling a fuel injector |
| US7832071B2 (en) | 2004-06-21 | 2010-11-16 | Klann Spezial-Werkzeugbau Gmbh | Device for extracting a nozzle assembly |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1659523A (en) * | 1927-03-01 | 1928-02-14 | Richard R Farrell | Valve tool |
| US3107420A (en) * | 1961-04-24 | 1963-10-22 | Alan B Gobby | Bearing puller for universal joints |
| US3568294A (en) * | 1969-07-22 | 1971-03-09 | Jacob K Conner | Gear and wheel pullers |
-
1980
- 1980-03-03 WO PCT/US1980/000224 patent/WO1981002538A1/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1659523A (en) * | 1927-03-01 | 1928-02-14 | Richard R Farrell | Valve tool |
| US3107420A (en) * | 1961-04-24 | 1963-10-22 | Alan B Gobby | Bearing puller for universal joints |
| US3568294A (en) * | 1969-07-22 | 1971-03-09 | Jacob K Conner | Gear and wheel pullers |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000031410A1 (en) * | 1998-11-20 | 2000-06-02 | Robert Bosch Gmbh | Device for disassembling a fuel injection valve |
| US6397445B1 (en) | 1998-11-20 | 2002-06-04 | Robert Boschgmbh | Device for disassembling a fuel injection valve |
| US6618918B2 (en) | 1998-11-20 | 2003-09-16 | Robert Bosch Gmbh | Dismantling device for dismantling a fuel injector |
| WO2000036295A1 (en) * | 1998-12-14 | 2000-06-22 | Robert Bosch Gmbh | Assembly device for assembling and dismantling a fuel injection valve |
| WO2000052327A1 (en) * | 1999-02-27 | 2000-09-08 | Robert Bosch Gmbh | Mounting/demounting device for mounting and/or demounting a fuel injection valve |
| US6363596B1 (en) | 1999-02-27 | 2002-04-02 | Robert Bosch Gmbh | Mounting/demounting device for mounting and/or demounting a fuel injection valve |
| US7832071B2 (en) | 2004-06-21 | 2010-11-16 | Klann Spezial-Werkzeugbau Gmbh | Device for extracting a nozzle assembly |
| EP2008774A2 (en) * | 2007-06-28 | 2008-12-31 | Klann Spezial-Werkzeugbau GmbH | Device for extracting an injection nozzle |
| EP2008774A3 (en) * | 2007-06-28 | 2009-09-30 | Klann Spezial-Werkzeugbau GmbH | Device for extracting an injection nozzle |
| DE202010009355U1 (en) | 2010-06-22 | 2010-10-07 | Werkzeug Pichler Gesellschaft M.B.H. & Co. Kg | Dismantling device for dismantling a fuel injector |
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| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Designated state(s): US |