US2675763A - Hydrauuc radial engine - Google Patents

Hydrauuc radial engine Download PDF

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Publication number
US2675763A
US2675763A US2675763DA US2675763A US 2675763 A US2675763 A US 2675763A US 2675763D A US2675763D A US 2675763DA US 2675763 A US2675763 A US 2675763A
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United States
Prior art keywords
piston
face
cylinder
abutment
enlarged
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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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English (en)
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    • 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
    • F01B1/0641—Details, component parts specially adapted for such machines
    • F01B1/0644—Pistons
    • 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
    • F01B1/0641—Details, component parts specially adapted for such machines
    • F01B1/0668—Supporting and guiding means for the piston
    • 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
    • F01B13/00—Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion
    • F01B13/04—Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion with more than one cylinder
    • F01B13/06—Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion with more than one cylinder in star arrangement
    • F01B13/061—Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion with more than one cylinder in star arrangement the connection of the pistons with the actuated or actuating element being at the outer ends of the cylinders
    • F01B13/062—Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion with more than one cylinder in star arrangement the connection of the pistons with the actuated or actuating element being at the outer ends of the cylinders cylinder block and actuating or actuated cam both rotating

Definitions

  • My present invention relates to improvements in expansible chamber type motors or pumps comprising a moving radiating cylinder block, reciprocating pistons and a rotating outside abutment; and in particular to an improved construction of the enlarged piston heads and of the correspondingly extended cylinder walls of such engines in which the piston end remote from the cylinder working space abuts slidably against a flat face of the abutment, and in which a pressure chamber is recessed from the said piston end, which chamber is supplied with pressure fluid from the appurtenant cylinder space in order to substantially counter-balance the pressure exerted by the operating fluid on the inner piston face.
  • the principal object of my present invention is to bring the piston head closer to the abutment face and to reduce the lateral pressures against the piston guideway, which result from the friction arising on the abutment face.
  • the enlarged piston head is guided in a guideway which is rigidly secured to the cylinder and has a greater diameter than the latten
  • the free end of the said gudeway extends into close proximity of the piston abutment face at the inner dead-center position of the piston.
  • the enlarged piston head is made of such length as to be still enclosed by the said guideway for a short distance also in the outer dead-center position of the piston.
  • Fig. 1 is a longitudinal sectional view of a piston of known type
  • Fig. 2 is a view on the piston head, partly drawn in section, in the direction of the arrow A in Fig. 1.
  • Fig. 3 shows an engine of the type indicated in section on the line III-III of Fig. 4,
  • Fig. 4 a side View thereof in section on the line IV-IV of Fig. 3,
  • Fig. 6 a plan view of the piston head of Fig. 5, in direction of the arrow B in Fig. 5.
  • Fig. 7 is a fragmentary sectional View similar to Fig. 5 showing a modified piston.
  • the cylinder block 3 comprising three radially disposed cylinders is mounted rotatably on the control stud 2 which. is rigidly secured to the casing l.
  • the abutment 5 is mounted rotatably at 5 and l and eccentrically to the axis of stud 2, and is so coupled to the cylinder block 3, by means of a follower 9 in form of a cross-loop or universal coupling, that the cylinder block 3 and the abutment 5 always rotate at the same number of revolutions.
  • a follower 9 in form of a cross-loop or universal coupling
  • the piston I2 through its slide shoe or piston head I5, abuts directly against the appurtenant supporting face II.
  • Bores 4 are provided in the said fixed control stud 2 and serve for supplying and delivering the operating fluid, e. g. in the sense of the arrows shown in Fig. 4.
  • the web 8 separates the suction and the pressure space of the engine from each other.
  • a shallow pressure chamber I6 defined by the narrow annular face 23 is recessed from the nat end face of segment 28 of the piston I3 (Fig. 5), which face abuts against the supporting face Il of rotor 5.
  • the said chamber is supplied with pressure uid from the cylinder interior I9 through the bores 20 and 30, thus counter-balancing the pressures exerted by theoperating iluid onto the inner piston face 22.
  • the spherical segment 28 permits slight deviations of the longitudinal axis of the piston from a line standing at 3 right angles to the abutment or supporting face H.
  • the enlarged piston head 32 in which the spherical face of the segment 28 is mounted, is guided, in accord with my present invention, by means of twordiametrically opposite guideways 33 rigidly secured to the cylinder 3.
  • the said ways 33 at the inner dead-centre position of the piston I3, with their free ends 35 extend very closely to the said face l l, as shown by the dash lines in Fig. 5.
  • the enlarged piston head 32 is of such length that, also at the outer deadcentre position of the piston, the latter will not eave the guideways 33 and will still be engaged thereby over a short distance, as shown in Fig. 5.
  • retaining ledges 27 are provided on the abutment and are engaged in a groove 34 of the piston head 32.
  • the guideway 33 is interrupted on the sides where the ledges 2l are engaged by the piston head, so that the guideway engages the piston head only between the ledges 2 by means oi two lugs.
  • a retaining ledge 2i also may be provided on one side only of the piston, in which case the guideway 33 may be cut back on this side only and be 'sept complete on the opposite side.
  • rEhe invention also may be applied to engines which are operated by means of a gas as operating or pressure iluid respectively.
  • a fluid operated radial piston engine comprising a casing, a rotor movable in said casing, a cylinder block having radial cylinders eccentrically mounted in said rotor, a piston operating in each radial cylinder, each piston having a body portion slidably engaged within the cylinder and an enlarged end portion, said rotor being provided with flat abutment faces in sliding engagement with the enlarged piston ends, each piston end having a pressure chamber recessed therein, the piston being provi-:led with a longitudinal bore connecting said pressure chamber with the cylinder space to supply pressure fluid from the cylinder space to the pressure chamber, extensions on said cylinders forming guideways for the enlarged piston end portions, said guideways being of such radial length as to arrive in close proximity of said piston end supporting abutment faces at inner dead center position of the piston, and the enlarged piston end portions being of such length to remain engaged by said guideways at outer dead center position of the piston, each piston having the enlarged end portion provided with a peripheral recess, and
  • a fluid operated pump or motor comprising a cylinder blocl; having radial cylinders, a piston operating in each cylinder each piston having a body portion slidably engaged within the cylinder and an enlarged end portion, a thrust member surrounding said cylinder block, said thrust me i-- ber being provided with flat abutment faces in sliding engagement with the enlarged piston ends, each piston end having a pressure chamber re Completed therein, the piston being provided with a longitudinal bore connecting said pressure chamber with the cylinder space to supply pressure uid from the cylinder space to the pressure chamber, extensions on said cylinders forming guideways for the enlarged piston end portions, said guideways being of such radial length as to arrive in close proximity of said piston end supporting abutment faces at inner dead center position of the piston, and the enlarged piston end portions being of such length as to remain engaged by said guideways at outer dead center position of the piston, each piston having the enlarged end portion provided with a peripheral recess, and retaining means carried by the thrust member and engaging said peripheral rece

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
US2675763D 1947-09-22 Hydrauuc radial engine Expired - Lifetime US2675763A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH683463X 1947-09-22

Publications (1)

Publication Number Publication Date
US2675763A true US2675763A (en) 1954-04-20

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ID=4528670

Family Applications (1)

Application Number Title Priority Date Filing Date
US2675763D Expired - Lifetime US2675763A (en) 1947-09-22 Hydrauuc radial engine

Country Status (4)

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US (1) US2675763A (en(2012))
BE (1) BE484960A (en(2012))
CH (1) CH259920A (en(2012))
GB (1) GB683463A (en(2012))

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2766702A (en) * 1952-09-04 1956-10-16 Arthur R Macvittie Rotary fluid motor or pump
US3084633A (en) * 1957-09-09 1963-04-09 North American Aviation Inc Hydraulic pump or motor
US3199460A (en) * 1962-01-11 1965-08-10 Stewart Warner Corp Hydraulic pump or motor
US3211107A (en) * 1961-10-06 1965-10-12 Stewart Warner Corp Hydraulic pump or motor

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO21119A (en(2012)) *
US388522A (en) * 1888-08-28 beauchemin
US580838A (en) * 1897-04-20 Rotary engine
US1398788A (en) * 1919-11-12 1921-11-29 Taylorwharton Iron And Steel C Rotary pump or motor
US1649347A (en) * 1925-07-23 1927-11-15 Hardt Arthur Pump
US2166114A (en) * 1934-12-24 1939-07-18 Elek K Benedek Variable displacement pump or motor
US2173432A (en) * 1935-10-09 1939-09-19 Elek K Benedek Hydraulic pump or motor
US2260859A (en) * 1938-10-15 1941-10-28 Alfons H Neuland Hydraulic transmission
US2293692A (en) * 1938-10-26 1942-08-18 Aircraft Hydraulic Appliances Variable stroke radial pump

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO21119A (en(2012)) *
US388522A (en) * 1888-08-28 beauchemin
US580838A (en) * 1897-04-20 Rotary engine
US1398788A (en) * 1919-11-12 1921-11-29 Taylorwharton Iron And Steel C Rotary pump or motor
US1649347A (en) * 1925-07-23 1927-11-15 Hardt Arthur Pump
US2166114A (en) * 1934-12-24 1939-07-18 Elek K Benedek Variable displacement pump or motor
US2173432A (en) * 1935-10-09 1939-09-19 Elek K Benedek Hydraulic pump or motor
US2260859A (en) * 1938-10-15 1941-10-28 Alfons H Neuland Hydraulic transmission
US2293692A (en) * 1938-10-26 1942-08-18 Aircraft Hydraulic Appliances Variable stroke radial pump

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2766702A (en) * 1952-09-04 1956-10-16 Arthur R Macvittie Rotary fluid motor or pump
US3084633A (en) * 1957-09-09 1963-04-09 North American Aviation Inc Hydraulic pump or motor
US3211107A (en) * 1961-10-06 1965-10-12 Stewart Warner Corp Hydraulic pump or motor
US3199460A (en) * 1962-01-11 1965-08-10 Stewart Warner Corp Hydraulic pump or motor

Also Published As

Publication number Publication date
GB683463A (en) 1952-11-26
CH259920A (de) 1949-02-15
BE484960A (en(2012))

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