US2548342A - Fuel injection pump for internalcombustion engines - Google Patents
Fuel injection pump for internalcombustion engines Download PDFInfo
- Publication number
- US2548342A US2548342A US9655A US965548A US2548342A US 2548342 A US2548342 A US 2548342A US 9655 A US9655 A US 9655A US 965548 A US965548 A US 965548A US 2548342 A US2548342 A US 2548342A
- Authority
- US
- United States
- Prior art keywords
- shim
- fuel injection
- parts
- injection pump
- spring
- 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.)
- Expired - Lifetime
Links
- 239000000446 fuel Substances 0.000 title description 5
- 238000002347 injection Methods 0.000 title description 5
- 239000007924 injection Substances 0.000 title description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/102—Mechanical drive, e.g. tappets or cams
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
- Y10T74/18296—Cam and slide
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/2101—Cams
- Y10T74/2107—Follower
Definitions
- This invention relates to fuel injection pumps of the reciprocatory type for internal combustion engines, in which reciprocatory motion is imparted to the plunger in one direction by a rotary cam and in the other direction by a spring. Ordinarily the motion is transmitted from the cam to the plunger by an intermediate thrust piece which is axially adjustable, the adjustability being required to bring the plunger into proper relation with parts in the pump cylinder,
- the said invention comprises a thrust piece formed by a pair of axially adjustable parts adapted to accommodate between them an adjusting shim.
- the improvement comprises a thrust piece as claimed in our previous specification above mentioned, and having combined with it means for obviating risk of displacement of the shim.
- Figure 1 is an elevation in section of a part of the driving mechanism of a fuel injection pump for internal combustion engines constructed in accordance with the invention
- Figure 2 is a similar view showing a modified construction
- Figure 3 is a similar view showing a further modification
- Figure 4 is a horizontal section of the modifiprising a pair of parts 4 and 5, the former, slidable in a bore 6, and the parts being separated by a shim l permitting axial adjustment of the said parts.
- the shim l is accommodated in a recess 8 formed in the end of the part 4 adjacent to the shim, and a spring ring 9 is let into the said recess.
- the ring abuts on one side of the shim, and by its grip on the sides of the recess, holds the shim in position in the event of separation of the two parts of the thrust piece.
- the shim 1 is located in a recess 8 in the part 4 as in the previously described example, and between the two parts 4 and 5 of the thrust piece there is placed a helical compression spring II] which at one end bears on the shim.
- the spring is such that in the event of separation of the parts of the thrust piece it can extend sufiiciently to hold the shim in position.
- the shim I is located in a recess 8 in the part 4 as in the previously described examples, and the two parts 4 and 5 of the thrust piece are interconnected by a spring ring I I lying within a recess in the part 5.
- One end of the spring ring is extended radially outwardly at l2 through a hole 13 in the side of the part 5 and a coaxial hole I4 in the side of the part 4. The parts 4 and 5 are thus anchored together.
- a reciprocatory pump of the kind specified having in combination at least one plunger, a spring acting on said plunger, a cam for moving said plunger against the action of said spring, a thrust piece through the medium of which said cam acts on said plunger, and which is composed of a pair of axially adjustable parts, at least one adjusting shim arranged between said axially adjustable parts, and spring means carried by said thrust piece for obviating risk of displacement of said shim.
- said spring means consists of a helical 5 UNITED STATES PATENTS compression spring located between said axially N b Name t adjustable parts and bearing on said shim. 2,138,359 Edwards Jan 30 19 0 4.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
April 10, 1951 K. BROOK ET AL FUEL INJECTION PUMP FOR INTERNAL-COMBUSTION ENGINES Filed Feb. 20, 1948 Patented Apr. 10, 1951 FUEL INJECTION PUMP FOR INTERNAL- COMBUSTION ENGINES Kenneth Brook, Eastcote, and Fraser Mackie Evans, London, England, assignors to C. A. V. Limited, London, England Application February 20, 1948, Serial No. 9,655 In Great Britain February 22, 1947 4 Claims.
This invention relates to fuel injection pumps of the reciprocatory type for internal combustion engines, in which reciprocatory motion is imparted to the plunger in one direction by a rotary cam and in the other direction by a spring. Ordinarily the motion is transmitted from the cam to the plunger by an intermediate thrust piece which is axially adjustable, the adjustability being required to bring the plunger into proper relation with parts in the pump cylinder,
I or to bring difierent plungers in a multi-cylinder pump into proper phase relationship.
In the specification of our co-pending application Serial No. 6156 we have described an invention which has for its object to provide an improved thrust piece enabling the desired adjustment to be effected in a simple and convenient manner. The said invention comprises a thrust piece formed by a pair of axially adjustable parts adapted to accommodate between them an adjusting shim.
In the further development of the said invention we have found that in the event of sticking of the pump plunger in its barrel, it is possible for the parts of the thrust piece to become separated with consequent risk of displacement of the shim, and to obviate this condition we have devised an improvement which forms the subject of the present invention.
The improvement comprises a thrust piece as claimed in our previous specification above mentioned, and having combined with it means for obviating risk of displacement of the shim.
In the accompanying drawings:
Figure 1 is an elevation in section of a part of the driving mechanism of a fuel injection pump for internal combustion engines constructed in accordance with the invention;
Figure 2 is a similar view showing a modified construction;
Figure 3 is a similar view showing a further modification;
Figure 4 is a horizontal section of the modifiprising a pair of parts 4 and 5, the former, slidable in a bore 6, and the parts being separated by a shim l permitting axial adjustment of the said parts. According to the present invention the shim l is accommodated in a recess 8 formed in the end of the part 4 adjacent to the shim, and a spring ring 9 is let into the said recess. The ring abuts on one side of the shim, and by its grip on the sides of the recess, holds the shim in position in the event of separation of the two parts of the thrust piece.
In an alternative mode of carrying the invention into efiect as illustrated in Figure 2, the shim 1 is located in a recess 8 in the part 4 as in the previously described example, and between the two parts 4 and 5 of the thrust piece there is placed a helical compression spring II] which at one end bears on the shim. The spring is such that in the event of separation of the parts of the thrust piece it can extend sufiiciently to hold the shim in position.
In another mode of carrying the invention into effect as illustrated in Figures 3 and 4, the shim I is located in a recess 8 in the part 4 as in the previously described examples, and the two parts 4 and 5 of the thrust piece are interconnected by a spring ring I I lying within a recess in the part 5. One end of the spring ring is extended radially outwardly at l2 through a hole 13 in the side of the part 5 and a coaxial hole I4 in the side of the part 4. The parts 4 and 5 are thus anchored together.
By any of the devices above described, risk of accidental dislodgement of the shim can be eliminated in a very simple and reliable manner.
Having thus described our invention, what we claim as new and desire to secure by Letters Patent is:
l. A reciprocatory pump of the kind specified, having in combination at least one plunger, a spring acting on said plunger, a cam for moving said plunger against the action of said spring, a thrust piece through the medium of which said cam acts on said plunger, and which is composed of a pair of axially adjustable parts, at least one adjusting shim arranged between said axially adjustable parts, and spring means carried by said thrust piece for obviating risk of displacement of said shim.
2. A reciprocatory pump as claimed in claim 1,
2,548,342 3 4 in which said spring means consists of a spring REFERENCES CITED ring engaging one of said axially adjustable parts The following references are of record in the and bearing on said shim. file of this patent:
3. A reciprocatory pump as claimed in claim 1,
in which said spring means consists of a helical 5 UNITED STATES PATENTS compression spring located between said axially N b Name t adjustable parts and bearing on said shim. 2,138,359 Edwards Jan 30 19 0 4. A reciprocatory pump as claimed in claim 1, 2,225,019 m 7, 9 0 in which said spring means consists of a spring ring interconnecting said axially adjustable parts. 10 FOREIGN PATENTS Number Country Date KENNETH BROOK. 5813878 Great Britain 1946 FRASER MACKIE EVANS. 349,459 France 1939
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB276046X | 1947-02-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2548342A true US2548342A (en) | 1951-04-10 |
Family
ID=25730954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US9655A Expired - Lifetime US2548342A (en) | 1947-02-22 | 1948-02-20 | Fuel injection pump for internalcombustion engines |
Country Status (3)
Country | Link |
---|---|
US (1) | US2548342A (en) |
CH (1) | CH276046A (en) |
FR (2) | FR932814A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2827078A (en) * | 1952-09-11 | 1958-03-18 | Int Basic Economy Corp | Valve actuating mechanism |
US3153404A (en) * | 1963-12-30 | 1964-10-20 | Gen Motors Corp | Hydraulic lash adjuster |
US3380468A (en) * | 1964-06-18 | 1968-04-30 | Ke Marc Res Div | Fluid infusion apparatus |
US4089234A (en) * | 1977-03-15 | 1978-05-16 | Caterpillar Tractor Co. | Anti-rotating guide for reciprocating members |
US4355546A (en) * | 1979-08-09 | 1982-10-26 | Lucas Industries Limited | Reciprocable plunger fuel injection pump |
EP3181837A1 (en) * | 2015-12-17 | 2017-06-21 | Aktiebolaget SKF | Cam follower roller device with tappet body made in two parts |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1129017B (en) * | 1958-08-01 | 1962-05-03 | Ford Werke Ag | Device for adjusting the valve clearance of internal combustion engines |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR849459A (en) * | 1938-07-30 | 1939-11-24 | Housing for fuel injection pumps | |
US2188859A (en) * | 1936-03-25 | 1940-01-30 | Timken Roller Bearing Co | Fuel injection pump |
US2225019A (en) * | 1935-01-11 | 1940-12-17 | Retel Jules Marie Rene | Injection device for combustion engines |
GB581878A (en) * | 1945-04-05 | 1946-10-28 | Cav Ltd | Improvements relating to fuel injection pumps for internal combustion engines |
-
1946
- 1946-08-26 FR FR932814D patent/FR932814A/en not_active Expired
-
1948
- 1948-02-20 US US9655A patent/US2548342A/en not_active Expired - Lifetime
- 1948-02-20 CH CH276046D patent/CH276046A/en unknown
- 1948-02-21 FR FR58038D patent/FR58038E/fr not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2225019A (en) * | 1935-01-11 | 1940-12-17 | Retel Jules Marie Rene | Injection device for combustion engines |
US2188859A (en) * | 1936-03-25 | 1940-01-30 | Timken Roller Bearing Co | Fuel injection pump |
FR849459A (en) * | 1938-07-30 | 1939-11-24 | Housing for fuel injection pumps | |
GB581878A (en) * | 1945-04-05 | 1946-10-28 | Cav Ltd | Improvements relating to fuel injection pumps for internal combustion engines |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2827078A (en) * | 1952-09-11 | 1958-03-18 | Int Basic Economy Corp | Valve actuating mechanism |
US3153404A (en) * | 1963-12-30 | 1964-10-20 | Gen Motors Corp | Hydraulic lash adjuster |
US3380468A (en) * | 1964-06-18 | 1968-04-30 | Ke Marc Res Div | Fluid infusion apparatus |
US4089234A (en) * | 1977-03-15 | 1978-05-16 | Caterpillar Tractor Co. | Anti-rotating guide for reciprocating members |
US4355546A (en) * | 1979-08-09 | 1982-10-26 | Lucas Industries Limited | Reciprocable plunger fuel injection pump |
EP3181837A1 (en) * | 2015-12-17 | 2017-06-21 | Aktiebolaget SKF | Cam follower roller device with tappet body made in two parts |
Also Published As
Publication number | Publication date |
---|---|
FR58038E (en) | 1953-09-21 |
FR932814A (en) | 1948-04-02 |
CH276046A (en) | 1951-06-15 |
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