US1622492A - Valve-operating mechanism - Google Patents
Valve-operating mechanism Download PDFInfo
- Publication number
- US1622492A US1622492A US105519A US10551926A US1622492A US 1622492 A US1622492 A US 1622492A US 105519 A US105519 A US 105519A US 10551926 A US10551926 A US 10551926A US 1622492 A US1622492 A US 1622492A
- Authority
- US
- United States
- Prior art keywords
- valve
- cams
- lever
- cam
- pair
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/08—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for decompression, e.g. during starting; for changing compression ratio
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
- F01L13/0047—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction the movement of the valves resulting from the sum of the simultaneous actions of at least two cams, the cams being independently variable in phase in respect of each other
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- 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
- Y10T74/16—Alternating-motion driven device with means during operation to adjust stroke
- Y10T74/1625—Stroke adjustable to zero and/or reversible in phasing
- Y10T74/1683—Cam and follower drive
Definitions
- Figure 2 is a diagrammatic viewof the t means employed for varying the phase relashown in Figure 1.
- a pair of shafts a. 7) arranged parallel with'each other are each provided with a suitable cam c, (1.
- Each shaft is provided f wiit-h a gear wheel e.
- the valve o by a th to them.
- three links 7'. 1:. Z are One (7') joins the shafts ot the wheels e,%h. Another (it) joins the shafts of the wheelsfi-z'. The third (Z) joins the links j,]c.
- the link system is movable in any con- I venient manner.
- a sector m is secured to the link 7' and its toothed periphery is engaged by'a worm n which can be rotated directly or'indirectly by hand.
- Motion is transmitted from the cams to ree armed lever, or an equivalent pair of levers 72, q.
- One end of the lever q is acted on by the cam d. and one end of the lever 71 by the other cam c.
- the other end. of q' engages the valve either directly or indirectly-whilst the other end of p-abuts on through an adjustable screw 1*.
- the cams can be varied through the medium.
- the duration of opening or closing of the valve can readily be varied between tlg limits for which I e position in each cycle of operation at which the valve is opened can. and would usually, be fixed, the variation being made the mechanism is desi in the period for whichjthe valve remains These conditions and others. can,
- valve operating mechanisms the combination of a valve operating" lever, a
- valve operating mechanisms the combinai'lioncomprising a valve operating lever, a pair of cams acting on the lever, epicyclic mechanism connecting said shafts for actuating the cams, and means wherebv the said mechanism can be moved for eflect mgszelative angular adjustment of the cams,
- valve operating combination comprising a ever, a pair of non-coaxial cams acting. on .difl'erent parts oi the lever, a pair of cam shafts, onefor each cam. epicyclicmechamechanisms, the valve operating cams relatively to each nism connecting said shafts for actuating the cams, and means whereby" the said mechanism can be moved for eflecting relative angular adjustment of as'descri d.
- valve operating mechanisms comprising a valve actuating lever, a pair of non-coaxial cams acting on different parts of the levers, a gear wheel in driving connection with each cam, a pair of mutually (engaging e icyclic wheels respectively engaging the cams, substantially the other gear neaaaea .wheels, and means for imparting angular cyclic mechanism for actuating the cams, W
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanically-Actuated Valves (AREA)
Description
iii
March 29; 1927.
L. COATALEN vALvm OPERATING MECHANISM Filed April 29, 1926 j vide improved Patented Mar. 29, 1927.
* UNITED STATES PATENT OF LOUIS COATALEN, OI WOLVEBHAHPTON, ENGLAND.
FYICE.
vALvE-ornmrme uncmursx.
Application filed April 29, 1926, Serial No.
5 In the accompanying sheet of explanatorv drawings tionship of the cam Figure 1 is a diagrammatic view showing forte manner of-carrying the invention into effect. 1 i
Figure 2 is a diagrammatic viewof the t means employed for varying the phase relashown in Figure 1.
ing the invention into effect as shown, a pair of shafts a. 7) arranged parallel with'each other are each provided witha suitable cam c, (1. Each shaft is provided f wiit-h a gear wheel e.
- In carrv e to f through other wheels h, z. Thealat- 0' ter are carried on a movable system of links so -that anepicyclic movement can be given used.
the valve o by a th to them. Preferably three links 7'. 1:. Z are One (7') joins the shafts ot the wheels e,%h. Another (it) joins the shafts of the wheelsfi-z'. The third (Z) joins the links j,]c. The link systemis movable in any con- I venient manner. Preferably a sector m is secured to the link 7' and its toothed periphery is engaged by'a worm n which can be rotated directly or'indirectly by hand.
Motion is transmitted from the cams to ree armed lever, or an equivalent pair of levers 72, q. One end of the lever q is acted on by the cam d. and one end of the lever 71 by the other cam c. The other end. of q' engages the valve either directly or indirectly-whilst the other end of p-abuts on through an adjustable screw 1*.
ovement of the valve in the opposite direction is efi'ected by a spring 8.
With' the mechanism as above described the angular or phase relationship between I. .Motion is transmito to e from a driving wheel 9. and from 105,519, and in Great minim April 0, ms.
the cams can be varied through the medium.
of the epicyclic wheels-h, i (which otherwise serve to transmit motion from one cam shaft to the other) and consequently the duration of opening or closing of the valve can readily be varied between tlg limits for which I e position in each cycle of operation at which the valve is opened can. and would usually, be fixed, the variation being made the mechanism is desi in the period for whichjthe valve remains These conditions and others. can,
open. however, be varied to suit different ments. Further the details of the mechanism can also be varied to suit the purpose for which the invention is required.
Having thus described my invention whatclaim as new and desire to secure by Letters Pa tent *is:
.1. In valve operating mechanisms, the combination of a valve operating" lever, a
requirepair ofcams acting on said lever, means secured to one of said cams for rotating the other of said cams, whereby said cams -rotate simultaneously, and means for angus laily adjusting said t er.
2. In. valve operating mechanisms, the combinai'lioncomprising a valve operating lever, a pair of cams acting on the lever, epicyclic mechanism connecting said shafts for actuating the cams, and means wherebv the said mechanism can be moved for eflect mgszelative angular adjustment of the cams,
antially as described 3. In valve operating combination comprising a ever, a pair of non-coaxial cams acting. on .difl'erent parts oi the lever, a pair of cam shafts, onefor each cam. epicyclicmechamechanisms, the valve operating cams relatively to each nism connecting said shafts for actuating the cams, and means whereby" the said mechanism can be moved for eflecting relative angular adjustment of as'descri d. I y
4. In valve operating mechanisms, the combination comprising a valve actuating lever, a pair of non-coaxial cams acting on different parts of the levers, a gear wheel in driving connection with each cam, a pair of mutually (engaging e icyclic wheels respectively engaging the cams, substantially the other gear neaaaea .wheels, and means for imparting angular cyclic mechanism for actuating the cams, W
movement to the epicyclie wheels for eflzectand means whereby said mechanism coninisrelative angular adjustment of the cams, necting said shafts can be moved for effectsu tantiall as described. in relative angular adjustment of the cams,
5. In vs vs operating mechanisms, the su%stantially as described. combination comprising a two-part valve In testimony whereof I have signed my 15 actuating lever, 21 pair of non-coaxial cams name to this specification. acting on the two parts of the said lever, a pair of cam shafts, one for each cam, epi- LOUIS COATALEN.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1622492X | 1925-04-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
US1622492A true US1622492A (en) | 1927-03-29 |
Family
ID=10887098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US105519A Expired - Lifetime US1622492A (en) | 1925-04-06 | 1926-04-29 | Valve-operating mechanism |
Country Status (1)
Country | Link |
---|---|
US (1) | US1622492A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3687010A (en) * | 1970-10-05 | 1972-08-29 | Douglas Ray Paxton | Variable dwell cam advance mechanism |
EP0052554A1 (en) * | 1980-11-13 | 1982-05-26 | Regie Nationale Des Usines Renault | Variable distribution device for an internal-combustion engine |
US4942777A (en) * | 1989-03-13 | 1990-07-24 | Fife Morton E | Device for cyclically varying the phase relationship between two rotating shafts |
US5669266A (en) * | 1995-02-08 | 1997-09-23 | Meta Motoren- Und Energie-Technik Gmbh | Coupling gear |
-
1926
- 1926-04-29 US US105519A patent/US1622492A/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3687010A (en) * | 1970-10-05 | 1972-08-29 | Douglas Ray Paxton | Variable dwell cam advance mechanism |
EP0052554A1 (en) * | 1980-11-13 | 1982-05-26 | Regie Nationale Des Usines Renault | Variable distribution device for an internal-combustion engine |
US4448156A (en) * | 1980-11-13 | 1984-05-15 | Regie Nationale Des Usines Renault | Variable gas distribution device for internal combustion motors |
US4942777A (en) * | 1989-03-13 | 1990-07-24 | Fife Morton E | Device for cyclically varying the phase relationship between two rotating shafts |
WO1992001879A1 (en) * | 1989-03-13 | 1992-02-06 | Fife Morton E | Cyclical phase device for rotating shafts |
US5669266A (en) * | 1995-02-08 | 1997-09-23 | Meta Motoren- Und Energie-Technik Gmbh | Coupling gear |
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