EP0658688A1 - Moteur - Google Patents

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Publication number
EP0658688A1
EP0658688A1 EP94890208A EP94890208A EP0658688A1 EP 0658688 A1 EP0658688 A1 EP 0658688A1 EP 94890208 A EP94890208 A EP 94890208A EP 94890208 A EP94890208 A EP 94890208A EP 0658688 A1 EP0658688 A1 EP 0658688A1
Authority
EP
European Patent Office
Prior art keywords
cylinders
drive shaft
motor according
cam
cylinder
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.)
Withdrawn
Application number
EP94890208A
Other languages
German (de)
English (en)
Inventor
Karl Urban
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0658688A1 publication Critical patent/EP0658688A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B9/00—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups
    • F01B9/04—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with rotary main shaft other than crankshaft
    • F01B9/06—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
    • 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
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
    • F02B75/222—Multi-cylinder engines with cylinders in V, fan, or star arrangement with cylinders in star arrangement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B1/00—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements
    • F01B1/06—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with cylinders in star or fan arrangement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B9/00—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups
    • F01B9/04—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with rotary main shaft other than crankshaft
    • F01B9/06—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
    • F01B2009/061—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces by cams
    • F01B2009/068—Quadri-lobe cams
    • 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
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1832—Number of cylinders eight

Definitions

  • the invention relates to an engine according to the preamble of claim 1.
  • the previously known multi-cylinder engines of this type work in asynchronous mode in that the combustion cylinders are ignited one after the other in a periodic sequence in the order in which they are arranged and, due to the piston movement, each exert a one-sided force acting transversely to the drive shaft.
  • the aim of the invention is to provide a motor of the type mentioned at the outset which avoids one-sided application of force to the cylinder pistons, so that this results in a uniform load on the drive shaft.
  • Another goal is to create an engine with high thermodynamic efficiency and high torque.
  • Another goal is to achieve a high work cycle density of the engine and thus a more regular run especially in the lower speed range.
  • a particularly high torque can be achieved at low speeds.
  • an engine according to the invention can be constructed which takes up particularly little space and also has a low weight.
  • the moving parts can be easily lubricated.
  • the power transmission can be carried out in a particularly balanced manner on the control cams.
  • a particularly advantageous and particularly simple valve control can be carried out by the features of claim 12.
  • each piston rod 22 is in operative engagement with a control cam device arranged on a rotor element 24 which is connected to the drive shaft 10 in a rotationally fixed manner and which is composed of an inner control cam 23 and an outer control cam 26.
  • rolling elements 25 are arranged on the end of the piston rod 22 opposite the piston 21, which effect the force transmission to the rotor element 24.
  • the drive principle described for a motor according to the invention can also be reversed by driving the drive shaft and the star-shaped cylinders, e.g. be designed as a pump cylinder and thus a rotating movement is converted into a multitude of pump movements.
  • the control cam device 23, 26 is alternately provided with convex and concave sections and closed overall, the drive shaft forming an axis of rotational symmetry with respect to this control cam device 23, 26, which in this exemplary embodiment has a fourfold symmetry. This means invariance of the control cam device with a 90 ° rotation of the drive shaft 1. Another suitable symmetry of the control cam device can also be provided within the meaning of the invention.
  • the combustion cylinders can function according to the 2 or 4 stroke principle. Every other cycle principle is also included in the scope of the invention, the corresponding arrangement of the cylinders having to be made to achieve the same conditions.
  • a 4-stroke cylinder runs through periodically an intake, a compression, a combustion and an exhaust stroke, the piston rod 22 being reciprocated in the axial direction of the piston 21 between a minimum and a maximum deflection.
  • an even number of combustion cylinders is provided, with a pair consisting of two cylinders 1.5, 2.6, 3.7 and 4.8, respectively, which are opposite to the drive shaft 10, performing synchronous work cycles.
  • This functional symmetry generates oppositely equal, centrally directed pairs of forces on the drive shaft 10, which essentially cancel each other out, so that no one-sided forces can arise that impair smooth running.
  • the firing sequence is, for example, carried out for a 4-stroke cylinder in such a way that, starting from cylinder 1, rotor 24 sweeps clockwise through an angle of 45 ° and this cylinder passes through a compression stroke while cylinder 5 compresses in the same way.
  • the combustion cycle takes place after the compressed mixture has been ignited.
  • the same cycles are carried out on diametrically opposite cylinders.
  • the minimum number of cylinders for 4-stroke operation is eight.
  • the minimum number is four cylinders.
  • a full working stroke is one Cylinder ends after 90 °, so that the firing order of cylinders 1 and 5 and 3 and 7 is followed at the same time and then cylinders 2 and 6 as well as 4 and 8 at the same time, so that functional symmetry is achieved according to the invention.
  • the rotor element 24 is constructed from rotatably connected disks 27, 28, the disk 27 having an outer control cam 26 as a pull rotor which moves the piston rod into the cylinder and the disk 28 having an inner control cam 23 which is spaced apart from one another and opposite Pressure rotor, which transmits the pressure of the cylinder piston rod 22 directed towards the center, act.
  • guide disks 29 are provided, which are provided with guide slots 30, in which the axial movement of the piston rods is guided.
  • roller bearings 25 are formed as rolling elements, which are held practically free of play between the control cams 23, 26.
  • Two outer and one inner roller bearing 25 are mounted on axles 31, which are held in a fork-shaped end of the piston rod 22 (FIG. 5 and FIG. 6).
  • either the outer roller bearings 25 on the outer cam 26 of the disk 27 or the middle roller bearing 25 on the inner cam 23 of the disk 28 run, resulting in opposite directions of rotation of the outer and inner roller bearings 25 ( Fig. 5).
  • the roller bearings 25 never come into contact with the drive shaft 1 or with the guide disk 30.
  • a housing 33 Arranged in a housing 33 are two combustion cylinders 34 located opposite one another with respect to the drive shaft 32, in which the pistons 21 are held axially displaceably and are operatively engaged via piston rods 22 with the inner control curve 23 of the pressure rotor 28 and with the outer control curves 26 of the pull rotor 28. by being supported there.
  • the valves 35 required to supply the cylinders 34 with fuel are controlled via a cam disk 36 held on the shaft 32.
  • the cam disk 36 has a rotational symmetry corresponding to the firing order, in this embodiment there is a double symmetry in order to achieve the simultaneous ignition of two opposing combustion cylinders according to the invention per revolution of the drive shaft.
  • FIG. 6 shows a further detailed view of an engine according to the invention, wherein it can be seen in particular how a cylinder piston rod 240, which is fork-shaped at its end, is guided in the guide slots 30 of the guide disks 29 such that it can only carry out an axial movement.
EP94890208A 1993-12-14 1994-12-12 Moteur Withdrawn EP0658688A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT253793 1993-12-14
AT2537/93 1993-12-14

Publications (1)

Publication Number Publication Date
EP0658688A1 true EP0658688A1 (fr) 1995-06-21

Family

ID=3536059

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94890208A Withdrawn EP0658688A1 (fr) 1993-12-14 1994-12-12 Moteur

Country Status (1)

Country Link
EP (1) EP0658688A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003093646A1 (fr) * 2002-04-30 2003-11-13 Gabriel Bonilla Pardo Pompe a pistons radiaux
WO2007079766A1 (fr) * 2005-12-21 2007-07-19 Dezmotec Ag Moteur a pistons alternatifs rotatifs
CN103047003A (zh) * 2013-01-15 2013-04-17 四川大学 外凸内任意齿差凸轮移动式传动内燃机
CN103047008A (zh) * 2013-01-11 2013-04-17 四川大学 任意齿差数移动式高转速内燃机
CN103061879A (zh) * 2013-01-29 2013-04-24 四川大学 任意齿差数摆动式高转速内燃机
CN103061877A (zh) * 2013-01-06 2013-04-24 四川大学 任意齿差数滚动式高转速内燃机
CN103089428A (zh) * 2013-01-29 2013-05-08 四川大学 外凸内任意齿差凸轮套筒传动内燃机
CN103089426A (zh) * 2013-01-21 2013-05-08 四川大学 外凸内任意齿差凸轮套筒传动内燃机
CN103147856A (zh) * 2013-01-07 2013-06-12 四川大学 外凸内任意齿差凸轮滚子传动内燃机
EP2815073A4 (fr) * 2011-12-07 2015-09-30 Martin Robert Shutlar Moteur
US10408201B2 (en) 2015-09-01 2019-09-10 PSC Engineering, LLC Positive displacement pump
WO2020183127A1 (fr) * 2019-03-11 2020-09-17 Newlenoir Limited Agencement de piston

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1765713A (en) * 1929-11-01 1930-06-24 Aeromarine Plane & Motor Co In Internal-combustion engine
US1829780A (en) * 1928-04-21 1931-11-03 Leon H Beytes Internal combustion engine
DE3032745A1 (de) * 1980-08-30 1982-04-22 Wolfgang Dr.-Ing. 7000 Stuttgart Berger Nutscheibenmotor
WO1993011342A1 (fr) * 1991-12-05 1993-06-10 Advanced Technologies Machine Moteur a combustion interne ameliore

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1829780A (en) * 1928-04-21 1931-11-03 Leon H Beytes Internal combustion engine
US1765713A (en) * 1929-11-01 1930-06-24 Aeromarine Plane & Motor Co In Internal-combustion engine
DE3032745A1 (de) * 1980-08-30 1982-04-22 Wolfgang Dr.-Ing. 7000 Stuttgart Berger Nutscheibenmotor
WO1993011342A1 (fr) * 1991-12-05 1993-06-10 Advanced Technologies Machine Moteur a combustion interne ameliore

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003093646A1 (fr) * 2002-04-30 2003-11-13 Gabriel Bonilla Pardo Pompe a pistons radiaux
WO2007079766A1 (fr) * 2005-12-21 2007-07-19 Dezmotec Ag Moteur a pistons alternatifs rotatifs
EP2815073A4 (fr) * 2011-12-07 2015-09-30 Martin Robert Shutlar Moteur
CN103061877A (zh) * 2013-01-06 2013-04-24 四川大学 任意齿差数滚动式高转速内燃机
CN103147856A (zh) * 2013-01-07 2013-06-12 四川大学 外凸内任意齿差凸轮滚子传动内燃机
CN103047008A (zh) * 2013-01-11 2013-04-17 四川大学 任意齿差数移动式高转速内燃机
CN103047003A (zh) * 2013-01-15 2013-04-17 四川大学 外凸内任意齿差凸轮移动式传动内燃机
CN103089426A (zh) * 2013-01-21 2013-05-08 四川大学 外凸内任意齿差凸轮套筒传动内燃机
CN103089428A (zh) * 2013-01-29 2013-05-08 四川大学 外凸内任意齿差凸轮套筒传动内燃机
CN103061879A (zh) * 2013-01-29 2013-04-24 四川大学 任意齿差数摆动式高转速内燃机
US10408201B2 (en) 2015-09-01 2019-09-10 PSC Engineering, LLC Positive displacement pump
WO2020183127A1 (fr) * 2019-03-11 2020-09-17 Newlenoir Limited Agencement de piston
US11613994B2 (en) 2019-03-11 2023-03-28 Newlenoir Limited Piston arrangement

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