US3163156A - Valve timing-gear of rotary engines - Google Patents

Valve timing-gear of rotary engines Download PDF

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Publication number
US3163156A
US3163156A US119670A US11967061A US3163156A US 3163156 A US3163156 A US 3163156A US 119670 A US119670 A US 119670A US 11967061 A US11967061 A US 11967061A US 3163156 A US3163156 A US 3163156A
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United States
Prior art keywords
shaft
gear
cam
valves
valve timing
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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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US119670A
Inventor
Peras Lucien
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Renault SAS
Regie Nationale des Usines Renault
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Renault SAS
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
    • 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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
    • F02B2053/005—Wankel engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2730/00—Internal-combustion engines with pistons rotating or oscillating with relation to the housing
    • F02B2730/01—Internal-combustion engines with pistons rotating or oscillating with relation to the housing with one or more pistons in the form of a disk or rotor rotating with relation to the housing; with annular working chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2730/00—Internal-combustion engines with pistons rotating or oscillating with relation to the housing
    • F02B2730/01—Internal-combustion engines with pistons rotating or oscillating with relation to the housing with one or more pistons in the form of a disk or rotor rotating with relation to the housing; with annular working chamber
    • F02B2730/018—Internal-combustion engines with pistons rotating or oscillating with relation to the housing with one or more pistons in the form of a disk or rotor rotating with relation to the housing; with annular working chamber with piston rotating around an axis passing through the gravity centre, this piston or the housing rotating at the same time around an axis parallel to the first axis
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the improvements forming the object of the invention consist essentially in ensuring this control by means of a single cam-shaft.
  • the rotor 1 has four teeth 2 and rotates eccentrically in a stator having five teeth 4 which form the envelope of the teeth of the rotor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Description

Dec. 29, 1964 L. PERAS VALVE TIMING-GEAR OF ROTARY ENGINES 2 Sheets-Sheet 1 Filed June 26, 1961 IN VENToR LucIEN PER/9S A 7"TOR/VE Y3 m, 0W4, Mwzma Dec. 29, 1964 1.. PERAS VALVE TIMING-GEAR OF ROTARY mamas 2 Sheets-Sheet 2 Filed June 26, 1961 'I/VVENTOR L uc/EA/ P x:
,4 rromvsYS M, M
United States Patent 4 Claims. Zcl. 12s s The present invention relates to rotary explosion engines and is concerned with the valve timing-gear of these engines, more particularly the control of the valves, the ignition system and the oil and fuel pumps.
The improvements forming the object of the invention consist essentially in ensuring this control by means of a single cam-shaft.
The valves, which are parallel to the axis of the engine, are located in the combustion chambers formed in the cylinder head which is arranged laterally to the rotor.
In order to take account of the distances of the con centrically-disposed valves from the cam-shaft, the valve push-rods are made of different lengths and the pawls are given different forms.
All the admission cams are given the same profile, and all the exhaust cams have also. the same profile in order to facilitate the manufacture of the cam-shaft.
In the accompanying drawings, there has been shown by way of example only, a form of construction of a rotary engine with a rotor having an epicycloidal profile with four teeth, rotating eccentrically in a stator with five teeth which form the envelope of the rotor teeth and comprise five points of contact.
FIG. 1 is a cross-section of the rotary engine, taken in a plane passing through the axis of the engine.
FIG. 2 is a transverse section showing the arrangement of the valve timing-gear members.
FIGS. 3, 4, and 5 show different forms of construction of a device for controlling the valves by pawls, push-rods and rocker-arms, according to the positions of the valves.
Referring now to the drawings, and more particularly to FIG. 1, it can be seen that the rotor 1 has four teeth 2 and rotates eccentrically in a stator having five teeth 4 which form the envelope of the teeth of the rotor.
The rotor 1 is mounted on the eccentric portion 1 of the shaft.
The combustion chambers 6 are hollowed out in the cylinder head 5 arranged'laterally to the rotor; the admission and exhaust are effected by the valves 7. These valves are parallel to the axis 8 of the engine, and the valve stems come level with a single plane 9 perpendicular to the axis 8.
The valve timing-gear of this engine is characterized by the fact that it is operated by a single cam-shaft 10, disposed perpendicular to the axis 8 of the engine and driven by a pair of helicoidal gear pinions 11.
This camshaft serves to drive the valves 7 which are individually designated in FIG. 2 by the letters A-B-C- D-E-F-GHIJ. There areprovided several groups of similar controls common to a number of valves and shown in detail in FIGS. 3 to 5. Thus in the embodiment shown, the control which is the subject matter of FIG. 3 is common to the valves B, G, I, J and comprises for each Patented Dec. 29, 1964 valve .a V-shaped tongue 12, cooperating with a control rod 13 interposed between said tongue and a rocker 14 intended to actuate the corresponding valve.
The control which is the subject matter of FIG. 4 is common to the valves D and E and comprises for each valve a straight tongue 20 cooperating with a control rod 21 of a rocker 22 intended to actuate the corresponding valve.
FIG. 5 shows, on the one hand, a control common to the valves A and H comprising a tongue 23, a control rod 24, and a rocker 25 intended to actuate the corresponding valve and, on the other hand, a control comnion to the valves C and F comprising a tongue 26, a control rod 27 and a rocker 28 intended to actuate the corresponding valve.
The cam-shaft also carries the eccentric cam 15 which operates the fuel pump 16, and the shaft also drives directly from its twoextremities the ignition device 17 and the oil-pump 18.
The advantage of this arrangement is that a single pair of pinions only is required to drive the cam-shaft, the ignition device, the oil-pump and the fuel pump.
I claim:
1. Improvements in the timing-gear of rotary explosion engines of the kind having a rotor with teeth rotating eccentrically in a toothed stator, comprising a cylinder head, lateral chambers in the head, a driving shaft, valves arranged in said chambers parallel to the axis of said driving shaft, a single cam-shaft having a plurality of cans .atfixed thereto, disposed perpendicular to the axis of the driving shaft, means driving said cam-shaft, control elements for the valves located at different distances from the cam-shaft and means of different lengths and forms acting on said control elements and actuated by the cams.
2v Improvements in valve timing-gear in accordance with claim 1, wherein said means driving said cam-shaft includes a single pair of pinions.
3. Improvements in valve timing-gear in accordance with claim 1, in which the engine also includes an ignition device and an oil pump and wherein said single cam-shaft also drives directly from its extremities, the ignition device and the oil-pump respectively.
4. Improvements in valve timing-gear in accordance with claim 1, in which the engine also includes a fuel pump that is also driven by an eccentric cam mounted on the said single cam-shaft.
References Cited by the Examiner UNITED STATES PATENTS 896,485 8/03 Tinlin 123-15 1,302,504 5/19 Briggs 123-16 1,575,860 3/26 Monk 123-14 2,162,771 6/39 Winans 1238 2,238,649 4/41 Kishline 123-1465 2,280,742 4/42 Bowers 12314 2,363,804 11/44 Reiland 123-l95 2,482,332 9/49 ECkClI 123l95 2,904,019 9/59 Shimomura 123-8 X JOSEPH H. BRANSON, 1a., Primary Examiner.
KARL J. ALBRECHT, Examiner.

Claims (1)

1. IMPROVEMENTS IN THE TIMING-GEAR OF ROTARY EXPLOSION ENGINES OF THE KIND HAVING A ROTOR WITH TEETH ROTATING ECCENTRICALLY IN A TOOTHED STATOR, COMPRISING A CYLINDER HEAD, LATERAL CHAMBERS IN THE HEAD, A DRIVING SHAFT, VALVES ARRANGED IN SAID CHAMBERS PARALLEL TO THE AXIS OF SAID DRIVING SHAFT, A SINGLE CAM-SHAFT HAVING A PLURALITY OF CANS AFFIXED THERETO, DISPOSED PERPENDICULAR TO THE AXIS OF THE DRIVING SHAFT, MEANS DRIVING SAID CAM-SHAFT, CONTROL ELEMENTS FOR THE VALVES LOCATED AT DIFFERENT DISTANCES FROM THE CAM-SHAFT AND MEANS OF DIFFERENT LENGTHS AND FORMS ACTING ON SAID CONTROL ELEMENTS AND ACTUATED BY THE CAMS.
US119670A 1960-08-26 1961-06-26 Valve timing-gear of rotary engines Expired - Lifetime US3163156A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR836838A FR1273029A (en) 1960-08-26 1960-08-26 Improvement in the distribution of rotary engines

Publications (1)

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US3163156A true US3163156A (en) 1964-12-29

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US119670A Expired - Lifetime US3163156A (en) 1960-08-26 1961-06-26 Valve timing-gear of rotary engines

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US (1) US3163156A (en)
DE (1) DE1299930B (en)
FR (1) FR1273029A (en)
GB (1) GB965277A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USB405495I5 (en) * 1973-10-11 1975-01-28
US3890937A (en) * 1974-04-25 1975-06-24 Gen Motors Corp Distributor drive arrangement for a rotary combustion
FR2457378A1 (en) * 1979-05-22 1980-12-19 Volzh Ob Proizvo Rotary IC engine with triangular piston - has auxiliary shaft for oil system at angle to major axis of trochoidal cylinder

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US896485A (en) * 1906-07-23 1908-08-18 James Tinlin Internal-combustion engine.
US1302504A (en) * 1917-06-11 1919-05-06 Arthur M Briggs Rotary internal-combustion engine.
US1575860A (en) * 1922-04-05 1926-03-09 Travis B Monk Internal-combustion engine
US2162771A (en) * 1935-06-29 1939-06-20 Edwin O Winans Motor
US2238649A (en) * 1939-04-04 1941-04-15 Reconstruction Finance Corp Drive connection
US2280742A (en) * 1940-08-17 1942-04-21 Joe D James Rotary internal combustion engine
US2363804A (en) * 1943-03-20 1944-11-28 Frank D Reiland Two directional combustion engine
US2482332A (en) * 1946-11-08 1949-09-20 Ford Motor Co Fuel pump and distributor drive
US2904019A (en) * 1956-03-31 1959-09-15 Shimomura Kenji Rotary internal combustion engine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1277018A (en) * 1917-12-05 1918-08-27 Arlie A Wolfington Rotary engine.
AT152482B (en) * 1936-12-21 1938-02-10 Alfred Steindl Valve control for internal combustion engines.
DE814349C (en) * 1948-10-02 1951-09-20 Christian Dr-Ing Schmid Valve drive
US2749893A (en) * 1952-11-05 1956-06-12 Porsche Kg Cam shaft drives for the valve gear of multibank internal combustion engines
DE1039781B (en) * 1955-12-30 1958-09-25 Bayerische Motoren Werke Ag Valve drive for internal combustion engines
FR1188135A (en) * 1957-12-06 1959-09-18 Improvements to rotary machines compressing or expanding a compressible fluid

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US896485A (en) * 1906-07-23 1908-08-18 James Tinlin Internal-combustion engine.
US1302504A (en) * 1917-06-11 1919-05-06 Arthur M Briggs Rotary internal-combustion engine.
US1575860A (en) * 1922-04-05 1926-03-09 Travis B Monk Internal-combustion engine
US2162771A (en) * 1935-06-29 1939-06-20 Edwin O Winans Motor
US2238649A (en) * 1939-04-04 1941-04-15 Reconstruction Finance Corp Drive connection
US2280742A (en) * 1940-08-17 1942-04-21 Joe D James Rotary internal combustion engine
US2363804A (en) * 1943-03-20 1944-11-28 Frank D Reiland Two directional combustion engine
US2482332A (en) * 1946-11-08 1949-09-20 Ford Motor Co Fuel pump and distributor drive
US2904019A (en) * 1956-03-31 1959-09-15 Shimomura Kenji Rotary internal combustion engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USB405495I5 (en) * 1973-10-11 1975-01-28
US3924577A (en) * 1973-10-11 1975-12-09 Gen Motors Corp Accessory shaft drive for a rotary machine
US3890937A (en) * 1974-04-25 1975-06-24 Gen Motors Corp Distributor drive arrangement for a rotary combustion
FR2457378A1 (en) * 1979-05-22 1980-12-19 Volzh Ob Proizvo Rotary IC engine with triangular piston - has auxiliary shaft for oil system at angle to major axis of trochoidal cylinder

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Publication number Publication date
DE1299930B (en) 1969-07-24
GB965277A (en) 1964-07-29
FR1273029A (en) 1961-10-06

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