US1885796A - Valve operating mechanism - Google Patents

Valve operating mechanism Download PDF

Info

Publication number
US1885796A
US1885796A US514360A US51436031A US1885796A US 1885796 A US1885796 A US 1885796A US 514360 A US514360 A US 514360A US 51436031 A US51436031 A US 51436031A US 1885796 A US1885796 A US 1885796A
Authority
US
United States
Prior art keywords
cam
valve
shafts
rocker
rocker arm
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
Application number
US514360A
Inventor
Eoulet Georges
Original Assignee
Eoulet Georges
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to FR1885796X priority Critical
Application filed by Eoulet Georges filed Critical Eoulet Georges
Application granted granted Critical
Publication of US1885796A publication Critical patent/US1885796A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/34403Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using helically teethed sleeve or gear moving axially between crankshaft and camshaft
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/19Gearing
    • Y10T74/1956Adjustable

Description

Nov. 1, 1932. B L'ET 1,885,796

VALVE OPERAT I NG MECHANI SM Filed Feb. 9. 1931 Patented Nov. 1, 1932 I I l p 1 GEORGES BOULET, OF SEVRES, FRANCE VALVE OPERATING MECHANISM Application filed February 9', 1931, Serial No. 514,360, and in France February 15 1930.

My invention relates to valve operating According to my invention two rocker mechanisms in which one or several inlet (or arms 11 and 12 are interposedbetween camexhaust) valves are operated through tWO shafts 9, l and plates 5, 6. Rocker arm 11 separate camshafts adapted to be angularly consists of two levers 11, 11 pivotally .displaced one with respect to the other, while mounted on a support 13 about an axis 1 1 5 the engine is running, so asto modify the and resting through two projections 15 on length of admission .(or of exhaust). 7 plate 6., Rocker arm 12 is pivotally mount- According to my invention, each camed on a support 16 about an axis 17 and rests shaft acts on the corresponding valve through through a projection '18 on plate 5. In their 10 a rocker arm which is mechanically connectintermediate part, levers 11, 11 are con- 60 ed to the rocker arm driven by the other camnected through a pin 19 passing, with a cershaft, in such manner that each cam may'protain lateral play,through aslot 20 of rocker duce always the substantially simultaneous arm 12-. opening of both valves. When cam 22 of shaft 10 acts upon rocker 5 In the particular case of a cylinder comarm 11, it causes the latter to rotate about 65 prising but a single inlet (or exhaust) valve, axis 14, and projection 15 presses'down valve" both rocker arms act on said common valve so 4. At the same time, pin 19 causes rocker that the latter may be operated through both arm 12 to rotate about axis 17, which is made cam-shafts. possible by the lateral play of. said pin in slot These arrangements are advantageously 20, and projection 18 presses down valve 3. 70 applied in particular with aircraft engines, It will be seenthat each camshaft thus opwhen the two cam-shafts can be both angucrates the two valves either simultaneously. larly displaced in opposite directions, while or with a small lag if pin 19 is given a slight V the engine is running, so that restricted in vertical play in slot 20. Obviously, cam 21 25 duction, in particular when the engine is runof cam-shaft 9 acts in the same manner on the 75 ning in the vicinity of the ground, may be valves through the-intermediary ofthe two accompanied with a late closing of the exrocker arms. haust, producing a reintroduction of the It results therefrom that, whatever the burnt gases into the engine, in greater or less angular relative positions of the tWo camquantity. shafts may be, each of them produces the si- 30 Said arrangements also apply to the remultaneous opening of the two valves, and versing of the direction of rotation of interthat throughvery simple and strong means. nal combustion engines as it will'be herein- It will also be-noticed that projections 15 and after explained. V 18 always act substantially in the direction A preferred embodiment of my device will of the axes of the valve stems, which permits be described with reference to the, appended an easy guiding and prevents jamming. Furdraudng, given merely by way of example, thermore, the displacements of said projecand in which: y tions on plates 5, 6 arejvery small, which re Fig. 1 is a vertical section along the line duces wear to a minimum] If one of the 40 1-1 of Fig. 2 through the two inlet (or excam-shafts is stopped, the other however haust) valves of an internal combustion enkeeps operating the two valves. gine cylinder; and If the cylinder was provided with a single Fig. 2 is a corresponding plan view. inlet (or exhaust) v valve, the arrangement In said drawing, 1 designates the cylinder would be modified in such manner that the head, 2 is the inlet (or exhaust) pipe. 3, 4 two projections 15, 18, disposed'along the are two inlet (or exhaust) valves, the stems of axis of the single valve, may act on the plate which are provided at their upper ends with of the latter. A mechanical connection beplates 5, 6 respectively, against which bear tween the two rocker arms would no longer springs 7 and 8. The valves are driven be quite necessary, but it might however be 00 through two parallel cam-shafts 9,10. kept in'order to avoid loose motion ofone rocker arm when the valve is pressed down by the other rocker arm.

As above mentioned this'arrangement permits reintroduction of the burnt gases into the cylinder when induction is restricted. In that case the two cam-shafts 9, 10 are so disposed as to be angularly displa-ceable, with respect to each other, in opposite directions, for instance by connecting said cam-shafts totheir driving shaft 21,011 which is keyed a pinion 24 through pinions 22, 23 adapted to slide under the action of fork members 27, 28' and provided with suitable arrangement of helical grooves cooperating with corresponding helical flutes 25, 26 of the cam-.

shafts.

This arran ement is alsosuitable as reversing gear for internal combustion engines.

Obviously the mechanical connection between the two rocker arms'couldbe of any other suitable type. Likewise, the cam could act on any point of the corresponding rocker arm. Generally speaking, while I have disclosed what I deem tov be the preferred embodiment of my device, it should be understood that 1 do not wish to be limited thereto as there might be'changes made in the arrangement disposition and shape of the parts without departing from the principle of my invention as comprehended within the scope of the appended claims.

What I claim is: V

l. A valve operating mechanism for internal combustion engines comprising in combination two separate cam-shafts, two rocker arms adapted to cooperate with said camshafts respectively, and means for mechani- .cally connecting said rocker arms to each other, whereby rotation of one rocker arm by the corresponding cam-shaft will produce rotation of the other rocker arm through said mechanical connecting means.

2. Valve operating mechanism for internal combustion engines comprising in combination two separate cam-shafts, two rocker arms adaptedto cooperatewith said cam- GEORGES BOULET.

shafts respectively, one of said rocker arms being provided with an elongated longitudinal slot, a pin projecting from the other arm adapted to engage said slot, whereby rotation of one rocker arm by the corresponding camshaft will produce rotation of the other rocker arm through said pin and slot connection.

3. Valve operating mechanism for internal combustion engines having two valves adapted to be both operated during the same stroke, which comprises two separate camshafts adapted to be angularly displaced respectively to each otherwhile the engine is running, a rocker arm pivot-allymount-ed on one side of these two cam-shafts, and pro vided with an elongated slot longitudinally disposed in its intermediate part, a projec .tionat the free end of said arm adapted to cooperate with one valve, another rocker arm

US514360A 1930-02-15 1931-02-09 Valve operating mechanism Expired - Lifetime US1885796A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1885796X 1930-02-15

Publications (1)

Publication Number Publication Date
US1885796A true US1885796A (en) 1932-11-01

Family

ID=9681934

Family Applications (1)

Application Number Title Priority Date Filing Date
US514360A Expired - Lifetime US1885796A (en) 1930-02-15 1931-02-09 Valve operating mechanism

Country Status (1)

Country Link
US (1) US1885796A (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700961A (en) * 1950-12-01 1955-02-01 Sr Thomas S Collier Hydraulic engine of the piston and cylinder type
US2880712A (en) * 1958-07-03 1959-04-07 Henry A Roan Variable valve timing for overhead cam engines
WO1982003658A1 (en) * 1981-04-13 1982-10-28 Ma Thomas Tsio Hei Internal combustion engine and cam drive mechanism therefor
DE3217203A1 (en) * 1981-05-15 1982-12-02 Honda Motor Co Ltd VARIABLE VALVE CONTROL
DE3219611A1 (en) * 1981-05-27 1982-12-16 Honda Motor Co Ltd ADJUSTABLE VALVE CONTROL DEVICE
DE3531000A1 (en) * 1985-08-30 1986-08-28 Herbert Dipl Ing Gohle Device for reducing the throttle losses in piston engines under partial load by phase control of the valves
EP0266511A1 (en) * 1986-11-07 1988-05-11 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Valve-timing influencing device
WO1990015269A1 (en) * 1989-05-30 1990-12-13 Avermaete Gilbert Variably tuned transmission
US5052350A (en) * 1990-11-02 1991-10-01 King Brian T Device to combine the motions of two camlobes differentially phased
EP0512699A1 (en) * 1991-05-03 1992-11-11 Ford Motor Company Limited Internal combustion engine camshaft phaseshift control system
US5178105A (en) * 1990-08-23 1993-01-12 Ricardo Consulting Engineers Limited Valve gear for internal combustion engines
US5211146A (en) * 1991-04-06 1993-05-18 Fev Motorentechnik Gmbh & Co. Kg Inlet control mechanism for internal combustion engine
US5555860A (en) * 1991-04-24 1996-09-17 Wride; Donald C. Valve control mechanism
US5572959A (en) * 1992-06-30 1996-11-12 Fanja Ltd. Method for controlling the working cycle in an internal combustion engine and an engine for performing said method
US20060060159A1 (en) * 2004-09-17 2006-03-23 Moretz R D Dynamic valve timing adjustment mechanism for internal combustion engines
DE102007040696A1 (en) * 2007-08-29 2009-03-05 Volkswagen Ag Internal combustion engine for motor vehicle, has rocker arm of charge-cycle valve arranged so that arm additionally operates another charge-cycle valve, where charge-cycle valves attached to each working cylinder

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700961A (en) * 1950-12-01 1955-02-01 Sr Thomas S Collier Hydraulic engine of the piston and cylinder type
US2880712A (en) * 1958-07-03 1959-04-07 Henry A Roan Variable valve timing for overhead cam engines
WO1982003658A1 (en) * 1981-04-13 1982-10-28 Ma Thomas Tsio Hei Internal combustion engine and cam drive mechanism therefor
DE3217203A1 (en) * 1981-05-15 1982-12-02 Honda Motor Co Ltd VARIABLE VALVE CONTROL
DE3219611A1 (en) * 1981-05-27 1982-12-16 Honda Motor Co Ltd ADJUSTABLE VALVE CONTROL DEVICE
DE3531000A1 (en) * 1985-08-30 1986-08-28 Herbert Dipl Ing Gohle Device for reducing the throttle losses in piston engines under partial load by phase control of the valves
EP0266511A1 (en) * 1986-11-07 1988-05-11 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Valve-timing influencing device
WO1990015269A1 (en) * 1989-05-30 1990-12-13 Avermaete Gilbert Variably tuned transmission
US5178105A (en) * 1990-08-23 1993-01-12 Ricardo Consulting Engineers Limited Valve gear for internal combustion engines
US5052350A (en) * 1990-11-02 1991-10-01 King Brian T Device to combine the motions of two camlobes differentially phased
US5211146A (en) * 1991-04-06 1993-05-18 Fev Motorentechnik Gmbh & Co. Kg Inlet control mechanism for internal combustion engine
US5642692A (en) * 1991-04-24 1997-07-01 Wride; Donald Charles Valve control mechanism
US5555860A (en) * 1991-04-24 1996-09-17 Wride; Donald C. Valve control mechanism
EP0512699A1 (en) * 1991-05-03 1992-11-11 Ford Motor Company Limited Internal combustion engine camshaft phaseshift control system
US5572959A (en) * 1992-06-30 1996-11-12 Fanja Ltd. Method for controlling the working cycle in an internal combustion engine and an engine for performing said method
US20060060159A1 (en) * 2004-09-17 2006-03-23 Moretz R D Dynamic valve timing adjustment mechanism for internal combustion engines
US7140335B2 (en) 2004-09-17 2006-11-28 Kaymor, Llc Dynamic valve timing adjustment mechanism for internal combustion engines
DE102007040696A1 (en) * 2007-08-29 2009-03-05 Volkswagen Ag Internal combustion engine for motor vehicle, has rocker arm of charge-cycle valve arranged so that arm additionally operates another charge-cycle valve, where charge-cycle valves attached to each working cylinder

Similar Documents

Publication Publication Date Title
US5289806A (en) Combustion engine with at least one camshaft which can be shifted axially
US6357405B1 (en) Valve drive mechanism of four-stroke cycle engine
US5606942A (en) Valve operating system for multi-valve engine
US3888217A (en) Camshaft belt drive for variable valve timing
US4790271A (en) Auto-decompression system for engines
US20080078345A1 (en) Phaser-actuated continuously variable valve actuation system with lost motion capability
US3422803A (en) Internal combustion engine construction and method for operation with lean air-fuel mixtures
US3641988A (en) Valve-actuating mechanism for an internal combustion engine
CA1327150C (en) Mechanism for the progressive dephasing of a camshaft in an internal combustion engine
DE10239224B4 (en) Valve drive for double camshaft motor with three valves
US2266077A (en) Internal combustion engine
US3584610A (en) Internal combustion engine
KR101228573B1 (en) Variable mechanical valve control for an internal combustion engine
DE102005053940A1 (en) Internal exhaust gas recirculation system for internal combustion engine, has exhaust gas intake valve opened during engine intake stroke when intake valve is opened and when pressure of exhaust gas is greater than chamber gas pressure
US3157166A (en) Variable dwell and lift mechanism for valves
DE3780617D1 (en) VALVE DRIVE MECHANISM FOR INTERNAL COMBUSTION ENGINE.
US6732710B2 (en) Internal-combustion engine with two inlet valves for each cylinder and an electronically controlled system for actuating the inlet valves in differentiated and alternating ways
SE9302159D0 (en) VALVE MECHANISM IN A COMBUSTION ENGINE
US4723516A (en) Valve open duration and timing controller
JP6592325B2 (en) Cylinder deactivation engine
DE10303749A1 (en) Overhead valve train for an engine with three valves and a camshaft
GB1093861A (en) Internal combustion engine valve gear
GB2115068A (en) Intake and exhaust valve gear in an internal combustion engine
JPH05133211A (en) Valve gear for internal combustion engine
KR20060082774A (en) Variable lift and duration device for poppet valves