US3343526A - Lubrication of the radial segments of rotary engines - Google Patents

Lubrication of the radial segments of rotary engines Download PDF

Info

Publication number
US3343526A
US3343526A US352161A US35216164A US3343526A US 3343526 A US3343526 A US 3343526A US 352161 A US352161 A US 352161A US 35216164 A US35216164 A US 35216164A US 3343526 A US3343526 A US 3343526A
Authority
US
United States
Prior art keywords
oil
rotor
crankshaft
segments
lubrication
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
US352161A
Other languages
English (en)
Inventor
Peras Lucien
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SA
Original Assignee
Renault SA
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
Application filed by Renault SA filed Critical Renault SA
Application granted granted Critical
Publication of US3343526A publication Critical patent/US3343526A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C19/00—Sealing arrangements in rotary-piston machines or 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
    • 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
    • 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 present invention relates to improvements in the lubrication of radial segments of rotary engines of the type having a rotor with an epicycloidal profile comprising N lobes and a stator having an interacting profile comprising N +1 lobes and operating with a four-stroke cycle.
  • the first two methods result in a large consumption of oil, the second being furthermore not very practical because it makes it necessary to employ a mixture of petrol and oil.
  • the third necessitates an oil supply system with an independent conduit for each groove and a non-return valve which is specially gas-tight.
  • the oil brought into the groove only reaches the zone in which it is most useful in very small quantities, this zone being the contact area between the segment and the rotor.
  • the invention is directed to an arrangement which does not present any of these disadvantages, that is to say with which the oil consumption is a minimum, which utilizes no valve and which enables the oil to be brought exactly where it is required.
  • the oil-inlet orifice or orifices is or are arranged on the rotor in a zone which is never subjected to a pressure higher than atmospheric pressure, which renders any valve unnecessary, each orifice delivering the oil required for lubrication at the moment when it is located opposite the segments.
  • the oil arrives through the orifice of a radial conduit provided in the rotor and is supplied at the moment when the segment and the orifice are facing each other, this conduit being supplied in turn by a further radial conduit disposed on the upstream side, and with which it is only put into communication at the moment when the segment comes exactly opposite the orifice which delivers the oil.
  • the upstream radial conduit is located in the crankshaft, the downstream conduit is located in the rotor (the segments being carried by the stator).
  • the rate of flow of oil supplied to the segment is proportional to the time during which the two conduits referred to are put into communication.
  • this time is itself inversely proportional to the speed of rotation of the engine, it follows that the quantity of oil delivered through the lubrication orifice is also inversely proportional to the speed. This quantity has therefore a tendency to be superabundant at low speeds and on the contrary insuificient at high speeds.
  • An improvement also forming part of the invention consists in interposing on the upstream supply conduit formed in a rotating portion, a flow regulator responsive to the action of speed and arranged in such manner that the cross section of the passage for the oil through this regulator is substantially proportional to that speed and that, in consequence, the volume of oil finally delivered through the lubrication orifice at each passage in front of a segment is substantially constant, irrespective of the speed of the engine.
  • This regulator known per se, can be produced in various ways.
  • FIG. 1 is a longitudinal section of a rotary engine, in which the lubrication of the radial segments is efiected by means of the arrangement forming the subject of the invention
  • FIG. 2 is a transverse section taken along the line IIII of FIG. 1 for a position of the rotor ensuring the lubrication of one of the segments;
  • FIG. 3 shows this same section when the crankshaft has turned through a certain angle
  • FIGS. 4, 5, 6 and 7 show the relative successive positions of the crankshaft, the rotor and the stator which correspond to the lubrication of the four other radial segments;
  • FIGS. 8 and 9 show the oil-inlet conduits to a large scale
  • FIG. 10 is a diagram giving, for each of the working chambers, the pressures which exist in the chamber as a function of the angle of rotation of the crankshaft;
  • FIG. 11 is an axial section of a first form of embodi ment of a flow regulator
  • FIG. 12 is an axial section of a second form of construction of a flow regulator.
  • FIGS. 1 and 2 there can be seen at 1 the rotor with its four lobes 2, 3, 4 and 5 which rotates on the eccentric 6 of the crankshaft 7.
  • the stator 8 constituted for example by two end-plates 9 and 9 and a peripheral ring 10, comprises five working chambers 11, 12, 13, 14 and 15, between which are arranged the radial segments 16, 17, 18, 19 and 20, the latter being biased into engagement with the lobes 2, 3, 4 and-5 by means of springs as shown in the drawings.
  • the rotor is guided in its rotation by the gears 21 and 21' which are rigidly fixed to the said rotor and are in engagement with the rings 22 and 22 rigidly fixed to the stator.
  • the diagram of FIG. indicates, for each of the working chambers, the pressure which exists in the chamber as a function of the angle of rotation of the crankshaft.
  • the pressure in each of the chambers is plotted on the ordinate and the angle of rotation of the crankshaft on the abscissa.
  • the pressure in any given chamber is shown at any given angle of crankshaft rotation.
  • the time passed by the summit of the cold lobe 3 in each chamber is marked on the diagram by a heavy line. At the summits of the cold lobes, there is therefore never applied any pressure greater than atmospheric pressure.
  • the oil is led into the conduit 23 of the rotor by a longitudinal conduit 24 formed in the crankshaft 7, into which opens a radial conduit 25 bored in the eccentric 6.
  • this conduit 25 is selected in such manner that it is located in the extension line of the conduit 23 when the eccentric and the rotor occupy the relative position shown in FIG. 2.
  • FIGS. 8 and 9 which show on a larger scale the oil-inlet conduits 23 and 25 at the moment when communication is established between them, then at the moment when this communication is interrupted, the sections of the said conduits which come to face each other are preferably chosen in such manner that the communication is established before the orifice of the jet 26 mounted in the conduit 23 is located in the plane of the flank A of the segment and so that this communication is only interrupted when the jet has come opposite the other flank B of the said segment.
  • This arrangement permits simultaneous lubrication of the rubbing surface of the segment on the rotor and of its lateral faces engaged in the guiding groove.
  • each segment is lubricated once for every four revolutions of the crankshaft (the rotor turning at one-quarter of the speed of the said crankshaft), that is to say once every two cycles (the engine cycle being four-stroke).
  • the conduit 23 is fitted with a jet as for the conduit 23.
  • a jet as for the conduit 23.
  • the conduit 23 can open out at the periphery of the rotor through one or a number of holes (an arrangement shown by way of example in FIG. 1) and that in this latter case the jets 26 can be placed either on the conduit 23 itself or on the small holes which terminate at the periphery.
  • the lubrication circuit of the segments may be common with that for lubricating the bearings of the crankshaft, as shown in FIG. 1, but it may also be provided as an independent circuit.
  • a regulator responsive to the centrifugal force which may be constituted by a seating 31 on which is supported a ball 32.
  • a regulater is shown in FIG. 11 and is held applied against the seating by the spring 33 supported on the locking washer 34.
  • the spring 33 is of variable flexibility, its strength increases as its height diminishes, in such manner that the cross section of the passage provided for the oil varies in a manner substantially proportional to the speed when the ball is subjected to the effect of centrifugal force.
  • the seating 31 may comprise one or a number of small holes 35 through which the oil passes when the speed of rotation of the crankshaft is insufficient to lift the ball from its seating.
  • the regulator may also be constructed as shown in FIG. 12 (on a larger scale than FIG. 11).
  • the seating 41 In the upstream conduit is mounted the seating 41, the cylindrical passage hole of which is more or less closed by the needle 42, the profile of which is formed in such manner as to produce the variation of section which corresponds to the variation of flow-rate which it is desired to obtain as a function of the speed.
  • the needle 42 moves away from the seating 41 under the effect of centrifugal force and acting against the spring 43 which is supported by the plug 44.
  • the needle comes into abutment against the seating at 45, and in this position there remains a small passage at 46 so that there is obtained a small flow of oil even when the speed is still not sufficient to displace the needle 42 from the seating 41.
  • said first and second passages register to lubricate sm'd.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
US352161A 1963-03-21 1964-03-16 Lubrication of the radial segments of rotary engines Expired - Lifetime US3343526A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR928785A FR1369351A (fr) 1963-03-21 1963-03-21 Perfectionnements au graissage des segments radiaux de moteurs rotatifs

Publications (1)

Publication Number Publication Date
US3343526A true US3343526A (en) 1967-09-26

Family

ID=8799771

Family Applications (1)

Application Number Title Priority Date Filing Date
US352161A Expired - Lifetime US3343526A (en) 1963-03-21 1964-03-16 Lubrication of the radial segments of rotary engines

Country Status (3)

Country Link
US (1) US3343526A (fr)
FR (1) FR1369351A (fr)
OA (1) OA01476A (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3690792A (en) * 1969-12-15 1972-09-12 Danfoss As Toothed wheel machine
US3804201A (en) * 1972-02-18 1974-04-16 Alfa Romeo Spa Oil rate regulator for internal combustion engine tightness member
US3941520A (en) * 1973-07-20 1976-03-02 Atlas Copco Aktiebolag Method and device for injection of liquid
US3976404A (en) * 1975-02-19 1976-08-24 Caterpillar Tractor Co. Lubrication of compression seals in rotary engines
US3999905A (en) * 1975-11-17 1976-12-28 Caterpillar Tractor Co. Rotary mechanism
US4026612A (en) * 1976-03-22 1977-05-31 Caterpillar Tractor Co. Lubrication of seals in rotary mechanisms
US4072449A (en) * 1976-03-12 1978-02-07 Caterpillar Tractor Co. Combined seal biasing spring and check valve for rotary mechanisms
US20100327683A1 (en) * 2009-06-27 2010-12-30 Wilson Ii Felix Epitrochoidal Electric Motor
US20110215664A1 (en) * 2010-03-08 2011-09-08 Wilson Ii Felix G C Epitrochoidal Electric Motor III
US20110215682A1 (en) * 2010-03-07 2011-09-08 Wilson Ii Felix G C Epitrochoidal Electric Motor II
USRE44841E1 (en) * 2004-09-07 2014-04-15 Quantex Patents Limited Pump with conveying chamber formed in outer rotor surface
WO2014089629A1 (fr) * 2012-12-12 2014-06-19 Greystone Technologies Pty Ltd Machine à fluide rotative et procédé de fonctionnement associé
US10443489B2 (en) * 2015-12-23 2019-10-15 Lg Electronics Inc. Rotary engine having combustion controllers

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2050533A (en) * 1935-03-01 1936-08-11 Ingersoll Rand Co Oiling device
US2227740A (en) * 1939-05-02 1941-01-07 Philip A Friedell Compressor
US2476383A (en) * 1945-12-22 1949-07-19 John O Porteous Planetary piston displacement mechanism
US2648952A (en) * 1948-02-14 1953-08-18 Don E Dasher Rotary pump and motor hydraulic transmission
DE1145428B (de) * 1960-08-03 1963-03-14 Daimler Benz Ag Rotationskolben-Brennkraftmaschine in Trochoidenbauart
US3082747A (en) * 1958-01-06 1963-03-26 Borsig Ag Rotary piston engine
US3193186A (en) * 1960-09-17 1965-07-06 Renault Packings for rotary engines

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2050533A (en) * 1935-03-01 1936-08-11 Ingersoll Rand Co Oiling device
US2227740A (en) * 1939-05-02 1941-01-07 Philip A Friedell Compressor
US2476383A (en) * 1945-12-22 1949-07-19 John O Porteous Planetary piston displacement mechanism
US2648952A (en) * 1948-02-14 1953-08-18 Don E Dasher Rotary pump and motor hydraulic transmission
US3082747A (en) * 1958-01-06 1963-03-26 Borsig Ag Rotary piston engine
DE1145428B (de) * 1960-08-03 1963-03-14 Daimler Benz Ag Rotationskolben-Brennkraftmaschine in Trochoidenbauart
US3193186A (en) * 1960-09-17 1965-07-06 Renault Packings for rotary engines

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3690792A (en) * 1969-12-15 1972-09-12 Danfoss As Toothed wheel machine
US3804201A (en) * 1972-02-18 1974-04-16 Alfa Romeo Spa Oil rate regulator for internal combustion engine tightness member
US3941520A (en) * 1973-07-20 1976-03-02 Atlas Copco Aktiebolag Method and device for injection of liquid
US3976404A (en) * 1975-02-19 1976-08-24 Caterpillar Tractor Co. Lubrication of compression seals in rotary engines
US3999905A (en) * 1975-11-17 1976-12-28 Caterpillar Tractor Co. Rotary mechanism
US4072449A (en) * 1976-03-12 1978-02-07 Caterpillar Tractor Co. Combined seal biasing spring and check valve for rotary mechanisms
US4026612A (en) * 1976-03-22 1977-05-31 Caterpillar Tractor Co. Lubrication of seals in rotary mechanisms
USRE44841E1 (en) * 2004-09-07 2014-04-15 Quantex Patents Limited Pump with conveying chamber formed in outer rotor surface
US8004133B2 (en) * 2009-06-27 2011-08-23 Fw2 International, Inc. Epitrochoidal electric motor
US20100327683A1 (en) * 2009-06-27 2010-12-30 Wilson Ii Felix Epitrochoidal Electric Motor
US20110215682A1 (en) * 2010-03-07 2011-09-08 Wilson Ii Felix G C Epitrochoidal Electric Motor II
US20110215664A1 (en) * 2010-03-08 2011-09-08 Wilson Ii Felix G C Epitrochoidal Electric Motor III
WO2014089629A1 (fr) * 2012-12-12 2014-06-19 Greystone Technologies Pty Ltd Machine à fluide rotative et procédé de fonctionnement associé
US9394902B2 (en) 2012-12-12 2016-07-19 Greystone Technologies Pty. Ltd. Rotary fluid machine and associated method of operation
AU2013360030B2 (en) * 2012-12-12 2018-03-15 Greystone Technologies Pty Ltd A rotary fluid machine and associated method of operation
US10443489B2 (en) * 2015-12-23 2019-10-15 Lg Electronics Inc. Rotary engine having combustion controllers

Also Published As

Publication number Publication date
FR1369351A (fr) 1964-08-14
OA01476A (fr) 1969-07-21

Similar Documents

Publication Publication Date Title
US3343526A (en) Lubrication of the radial segments of rotary engines
US4004556A (en) Rotary internal combustion engine of axially sliding vane type
US3294071A (en) Internal combustion rotary piston engine
US4200072A (en) Fuel injection pump
GB961872A (en) Fluid-handling rotary machine
US3103920A (en) Machines and in particular internal combustion engines having an eccentrically mounted rotor with radial blades slidable therein
US3106912A (en) Air cooled rotary internal combustion engine
US2126709A (en) Fuel injection system
JPS61501644A (ja) 章動ポンプ副組立体を有するディストリビュ−タ燃料噴射ポンプ
US2189976A (en) Rotary engine
US4008694A (en) Rotary cycling valve for internal combustion engines
US3855987A (en) Rotary engine oil lubrication system
US3368490A (en) Fuel pump and pressure equalization means therefor
US4239469A (en) Seals for a rotary machine
US2995122A (en) Free piston engine with rotating pistons
US3614944A (en) Engine apparatus
US3923434A (en) Rotary combustion engine apex seal lubrication
US3138103A (en) Fuel supplying mechanism
US3868929A (en) Lubricating oil supply system for rotary engine
US3844691A (en) Lubricant supply system for rotary piston engine
US3068794A (en) Fuel-injection pumps for compressionignition internal combustion engines
US3999905A (en) Rotary mechanism
US3160104A (en) Rotary fuel pump of the kind including cam-operated pistons
US3781147A (en) Sealing device for a rotary internal combustion engine
US2231547A (en) Internal combustion engine