US2423395A - Opposed piston engine cylinder liner - Google Patents

Opposed piston engine cylinder liner Download PDF

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Publication number
US2423395A
US2423395A US578262A US57826245A US2423395A US 2423395 A US2423395 A US 2423395A US 578262 A US578262 A US 578262A US 57826245 A US57826245 A US 57826245A US 2423395 A US2423395 A US 2423395A
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ring
cylinder
liners
liner
cooling
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US578262A
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Lieberherr Hans
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Sulzer AG
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Sulzer AG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/18—Other cylinders
    • F02F1/186—Other cylinders for use in engines with two or more pistons reciprocating within same cylinder

Definitions

  • This invention relates to an opposed-piston internal combustion engine with cooled liners inserted in its cylinders. It consists in that two liners arranged coaxially and each swept by a material.
  • the division of working piston are detachably connected to each 5 other by means of a centre ring inserted between with cavities I3 serving as collecting spaces for their ends with a sealing eflect, the surfaces of cooling medium, which may be designed as ring contact between the liners and the centre ring pa having cavities which serve as collecting spaces tact surfaces of the centre ring I2 are connected for coo-ling medium and communicate with each to each other through a number of passages I i.
  • the centre piece I'2 the single passages I4 make It is e ped e t to d s gn the cavities provided an angle in axial planes and are thus conducted in the surfaces of contact and serving as collectas near as possible to the dead space 5. ing spaces for cooling medium as ring passages.
  • the cavities I3 of the flanges 6 and I a number
  • the centre ring 12 is further equipped centre ring by means of a packing ring of elastic with the usual fitting bores II for fuel valves,
  • aloose- I2 is provided with a loosely inserted fire proly inserted heat protective ring.
  • tective ring I8 which protects it from the direct Exemplifications of the invention are shown in radiation of and contact with the combustion the attached drawings, Fig. 1 showing a longitugases.
  • 'I h'is protective ring I8 may be made of a dinal section of a first embodiment and Fig. 2 a heat resistant material, for instance a high alloy detail of a second embodiment in longitudinal steel, or of an insulating material, for instance a ceramic substance.
  • liners I, 2 arranged co-axial in equipped with axially directed cooling passages the cylinder jacket 8 of an opposed-piston en- I4 and also with the usual fitting bores IT for fuel gine working on the two-stroke cycle are swept valves, starting valves, etc, and can otherwise be by the working piston 3 and 4 respectively and of the same design as the centre ring shown in are provided at the end nearest the dead space 5 F g. with flanges 5 and 1 respectively.
  • the liner 2 ar- offers the advantage ranged on the scavenging side is equipped with that, owing to the provision of intermediate c01- inlet ports III, and the liner I on the exhaust side lecting spaces I3 for cooling medium, the course Between the flanges 6, I of of the cooling-water passages can be chosen in the liners I, 2 the centre ring I2 is inserted and each of the three parts I, 2, I2 independently is detachably connected to the former by means of the other parts and only in the light of its of tie-bolts II.
  • tie-bolts 4O own requirements whereby a minimum concen- II to be heldin the flange I of the liner 2 on the tration of stress can be obtained in the single inlet side by a screw connection.
  • parts I, I2, I2. during overhauls and replacement of the liner I ability is increased, and particularly that of the on the exhaust side, which experience shows to be centre ring I2, which is subjected to the highest subject to the intenser heat stressing and greater pressures at high temperatures.
  • the tie-bolts II can remain atthe cylinder working space into three parts furtached to the liner 2 on the inlet side in that, ther permits the liners I, 2 to be made of a mateafter the nuts I la have been loosened, the centre rial with good running qualities, while the centre ring I2 and the liner I can be drawn off the bolt ring I2 not swept by the working pistons 3, 4 con- II.
  • the thread of the screw joint is saved sists of a, material which is chosen in the first wear and tear and can be used for a long period place for its appropriate toughness and accordingly has a good notch impact strength, high re- In order to obtain a gastight cylinder working sistance to scaling, corrosion and the like. space for the working pistons 3 and 4, a packing Instead of designing the collecting spaces I3 for cooling medium as uninterrupted ring pasring I9 of elastic material, for instance rubber,
  • the elastic packing ring I9 supplements the metallic sealing at the sealing surfaces 20 of the flanges 6, T and of the centre ring [2.
  • the packing ring [9 of elastic material prevents the entry of cooling liquid into the cylinder working space, for instance in cases when, as a result of the seizing of the working piston, the tie-bolts H are stretched and consequently the metal sealing at the contact surfaces 20 is temporarily impaired.
  • a cylinder for opposed pistons comprising a liner for each piston, a center ring coaxially positioned between the two liners, means for efiecting a gas-tight connection between the liners and the center rin a cooling space at the place of contact between each liner and the center ring, passages in the center ring connecting the two cooling spaces together, a cylinder jacket for each cylinder liner, a cooling space between each liner and its jacket, and passageways connecting each cooling space between the center ring and the linerswith a cooling space between each liner and its jacket.
  • a cylinder for opposed. pistons as defined in claim 1 which comprises cooling spaces between the cylinder liners and the center ring that are formed as ring passages.
  • a cylinder for opposed pistons as defined in claim 1 which comprises packing rings formed of elastic material for efiecting a gas-tight connection between the liners and the center ring.
  • a cylinder for opposed pistons as defined in claim 1. which comprises coaxial cylinder liners,
  • the interior cylindrical diameter of the center ring being larger than the interior diameters of the liners, and a, heat protecting liner for the center ring having an interior cylindrical diameter approximately the same as that of the liners.
  • a cylinder for opposed pistonsv as defined in claim 1 which comprises several passageways in the center ring connecting the cooling spaces between the liners and the center ring which extend in the longitudinal direction of the cylinder, said passageways being angularly disposed so as to approach most closely the inner wall of the liner at a position near the dead space of,the cylinder.
  • A. cylinder for opposed pistons as defined in claim 1 which comprises means for inserting tiebolts through the center ring with one end attached to one liner and the other end in the coolin space between the other liner and the jacket whereby the nuts for the tie-bolts may be manipulated in the cooling space.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Description

July 1, 1947.
H. LIEB ERHERR OPIOSED PISTON ENGINE CYLINDER LINER 7 Filed Feb. 16. 1945 UOEUCUOOGQ INVENTOR HAN-5 L/EBERHE'RR BY I . Q j ATTORNEYS Patented July 1, 1947 OPPOSED PISTON ENGINE CYLINDER LINER Hans Lieberherr, Winterthur, Switzerland, assignor to Sulzer Freres, Societe Anonyme, Winterthur, Switzerland Application February 16, 1945, Serial No. 578,262
In Switzerland June '7, 1944 6 Claims.
This invention relates to an opposed-piston internal combustion engine with cooled liners inserted in its cylinders. It consists in that two liners arranged coaxially and each swept by a material.
section.
with outlet ports 9.
of service.
is arranged between the coaxial liners by arranged flanges 6 and I and the centre ring I2, apart from the metallic sealing of the surfaces of contact 29. Both the centre ring I2 and the flanges I5, I are provided in their contact surfaces The cavities I3 arranged in both con- From The centre ring I2 is In this way the working reli- The division of working piston are detachably connected to each 5 other by means of a centre ring inserted between with cavities I3 serving as collecting spaces for their ends with a sealing eflect, the surfaces of cooling medium, which may be designed as ring contact between the liners and the centre ring pa having cavities which serve as collecting spaces tact surfaces of the centre ring I2 are connected for coo-ling medium and communicate with each to each other through a number of passages I i. other and with the hollow cooling spaces provided In order to obtain an increased cooling efiect on between liners and cylinder. the centre piece I'2, the single passages I4 make It is e ped e t to d s gn the cavities provided an angle in axial planes and are thus conducted in the surfaces of contact and serving as collectas near as possible to the dead space 5. ing spaces for cooling medium as ring passages. the cavities I3 of the flanges 6 and I a number For the purpose of obtaining a gastight cylinder of passages I5 lead into the hollow cooling spaces working space it is advantageous to seal the conit provided between th liners I and 2 and the tact surfaces between the coaxial liners and the cylinder 3. The centre ring 12 is further equipped centre ring by means of a packing ring of elastic with the usual fitting bores II for fuel valves,
In order to protect the centre ring starting valves and the like. from the direct radiation of and contact with the In @116 a p S n n F 2 t Centre ri combustion gases, it can be provided with aloose- I2 is provided with a loosely inserted fire proly inserted heat protective ring. tective ring I8, which protects it from the direct Exemplifications of the invention are shown in radiation of and contact with the combustion the attached drawings, Fig. 1 showing a longitugases. 'I h'is protective ring I8 may be made of a dinal section of a first embodiment and Fig. 2 a heat resistant material, for instance a high alloy detail of a second embodiment in longitudinal steel, or of an insulating material, for instance a ceramic substance.
In Fig. 1 the liners I, 2 arranged co-axial in equipped with axially directed cooling passages the cylinder jacket 8 of an opposed-piston en- I4 and also with the usual fitting bores IT for fuel gine working on the two-stroke cycle are swept valves, starting valves, etc, and can otherwise be by the working piston 3 and 4 respectively and of the same design as the centre ring shown in are provided at the end nearest the dead space 5 F g. with flanges 5 and 1 respectively. The liner 2 ar- The present invention offers the advantage ranged on the scavenging side is equipped with that, owing to the provision of intermediate c01- inlet ports III, and the liner I on the exhaust side lecting spaces I3 for cooling medium, the course Between the flanges 6, I of of the cooling-water passages can be chosen in the liners I, 2 the centre ring I2 is inserted and each of the three parts I, 2, I2 independently is detachably connected to the former by means of the other parts and only in the light of its of tie-bolts II. It is expedient for these tie-bolts 4O own requirements, whereby a minimum concen- II to be heldin the flange I of the liner 2 on the tration of stress can be obtained in the single inlet side by a screw connection. In this way, parts I, I2, I2. during overhauls and replacement of the liner I ability is increased, and particularly that of the on the exhaust side, which experience shows to be centre ring I2, which is subjected to the highest subject to the intenser heat stressing and greater pressures at high temperatures. fouling of the two, the tie-bolts II can remain atthe cylinder working space into three parts furtached to the liner 2 on the inlet side in that, ther permits the liners I, 2 to be made of a mateafter the nuts I la have been loosened, the centre rial with good running qualities, while the centre ring I2 and the liner I can be drawn off the bolt ring I2 not swept by the working pistons 3, 4 con- II. Thus the thread of the screw joint is saved sists of a, material which is chosen in the first wear and tear and can be used for a long period place for its appropriate toughness and accordingly has a good notch impact strength, high re- In order to obtain a gastight cylinder working sistance to scaling, corrosion and the like. space for the working pistons 3 and 4, a packing Instead of designing the collecting spaces I3 for cooling medium as uninterrupted ring pasring I9 of elastic material, for instance rubber,
sages, they could be divided up into several spaces and might communicate through passages I4, I5 with the hollow cooling spaces [6. The elastic packing ring I9 supplements the metallic sealing at the sealing surfaces 20 of the flanges 6, T and of the centre ring [2. In particular the packing ring [9 of elastic material prevents the entry of cooling liquid into the cylinder working space, for instance in cases when, as a result of the seizing of the working piston, the tie-bolts H are stretched and consequently the metal sealing at the contact surfaces 20 is temporarily impaired.
I claim:
1. A cylinder for opposed pistons comprising a liner for each piston, a center ring coaxially positioned between the two liners, means for efiecting a gas-tight connection between the liners and the center rin a cooling space at the place of contact between each liner and the center ring, passages in the center ring connecting the two cooling spaces together, a cylinder jacket for each cylinder liner, a cooling space between each liner and its jacket, and passageways connecting each cooling space between the center ring and the linerswith a cooling space between each liner and its jacket.
2. A cylinder for opposed. pistons as defined in claim 1 which comprises cooling spaces between the cylinder liners and the center ring that are formed as ring passages.
3. A cylinder for opposed pistons as defined in claim 1 which comprises packing rings formed of elastic material for efiecting a gas-tight connection between the liners and the center ring.
4'. A cylinder for opposed pistons as defined in claim 1. which comprises coaxial cylinder liners,
a center ring, the interior cylindrical diameter of the center ring being larger than the interior diameters of the liners, and a, heat protecting liner for the center ring having an interior cylindrical diameter approximately the same as that of the liners.
5. A cylinder for opposed pistonsv as defined in claim 1 which comprises several passageways in the center ring connecting the cooling spaces between the liners and the center ring which extend in the longitudinal direction of the cylinder, said passageways being angularly disposed so as to approach most closely the inner wall of the liner at a position near the dead space of,the cylinder.
6. A. cylinder for opposed pistons as defined in claim 1 which comprises means for inserting tiebolts through the center ring with one end attached to one liner and the other end in the coolin space between the other liner and the jacket whereby the nuts for the tie-bolts may be manipulated in the cooling space.
HANS LIEBERHERR.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 710,911 Ebbs Oct. '7, 1902 1,086,793 Steinbecker Feb. 10, I914 1,231,903 Junkers July 3, 1917 1,523,453 Scott Jan. 20, 1925" 1,623,639 Setz Apr. 5, 1927'
US578262A 1944-06-07 1945-02-16 Opposed piston engine cylinder liner Expired - Lifetime US2423395A (en)

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CH582569X 1944-06-07

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GB (1) GB582569A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2607328A (en) * 1948-12-23 1952-08-19 Jencick Stephen Diesel motor
US20040198464A1 (en) * 2003-03-04 2004-10-07 Jim Panian Wireless communication systems for vehicle-based private and conference calling and methods of operating same
US20050274332A1 (en) * 2004-06-10 2005-12-15 Lemke James U Two-cycle, opposed-piston internal combustion engine
US7360511B2 (en) 2004-06-10 2008-04-22 Achates Power, Inc. Opposed piston engine
US20100175641A1 (en) * 2007-11-08 2010-07-15 Satoshi Yamada Cylinder block and method for manufacturing the same
US20100212613A1 (en) * 2009-02-20 2010-08-26 Achates Power, Inc. Multi-Cylinder opposed piston engines
US20100212638A1 (en) * 2009-02-20 2010-08-26 Achates Power, Inc. Opposed piston engines with controlled provision of lubricant for lubrication and cooling
US20100212637A1 (en) * 2009-02-20 2010-08-26 Achates Power, Inc. Cylinder and piston assemblies for opposed piston engines
WO2013019433A1 (en) * 2011-07-29 2013-02-07 Achates Power, Inc. Impingement cooling of cylinders in opposed-piston engines
US20160290277A1 (en) * 2015-03-31 2016-10-06 Achates Power, Inc. Cylinder Liner For An Opposed-Piston Engine
US9771861B2 (en) 2014-09-09 2017-09-26 Avl Powertrain Engineering, Inc. Opposed piston two-stroke engine with thermal barrier
US10036344B2 (en) 2015-02-27 2018-07-31 Avl Powertrain Engineering, Inc. Opposed piston two stroke engine liner construction
US10072604B2 (en) 2015-02-27 2018-09-11 Avl Powertrain Engineering, Inc. Engine block construction for opposed piston engine
US10156202B2 (en) 2016-03-04 2018-12-18 Achates Power, Inc. Barrier ring and assembly for a cylinder of an opposed-piston engine
WO2023215245A1 (en) * 2022-05-02 2023-11-09 Enginuity Power Systems, Inc. Multi-fuel engines and related methods

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2703077A (en) * 1952-07-08 1955-03-01 Fairbanks Morse & Co Engine cylinder structure
AT414016B (en) * 2004-06-03 2006-08-15 Avl List Gmbh Internal combustion engine has a flow path which terminates in an outlet opening in the region of the wall of a piston
DE102012207764B4 (en) 2012-05-09 2022-08-11 International Solar Energy Research Center Konstanz E.V. Process for boron doping of silicon wafers

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US710911A (en) * 1902-05-29 1902-10-07 Ver Maschinenfabrik Augsburg Und Maschb Ges Nuernberg A G Gas-engine cylinder.
US1086793A (en) * 1912-11-27 1914-02-10 Gen Electric Internal-combustion engine.
US1231903A (en) * 1913-06-25 1917-07-03 Hugo Junkers Cylinder of internal-combustion engines and other similar machines.
US1523453A (en) * 1918-06-18 1925-01-20 Super Diesel Tractor Corp Combustion chamber for liquid-fuei engines
US1623639A (en) * 1924-09-04 1927-04-05 Bertha E Setz Cylinder structure for internal-combustion engines

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH214250A (en) * 1939-02-15 1941-04-15 Porsche Kg Liquid-cooled opposed piston internal combustion engine.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US710911A (en) * 1902-05-29 1902-10-07 Ver Maschinenfabrik Augsburg Und Maschb Ges Nuernberg A G Gas-engine cylinder.
US1086793A (en) * 1912-11-27 1914-02-10 Gen Electric Internal-combustion engine.
US1231903A (en) * 1913-06-25 1917-07-03 Hugo Junkers Cylinder of internal-combustion engines and other similar machines.
US1523453A (en) * 1918-06-18 1925-01-20 Super Diesel Tractor Corp Combustion chamber for liquid-fuei engines
US1623639A (en) * 1924-09-04 1927-04-05 Bertha E Setz Cylinder structure for internal-combustion engines

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2607328A (en) * 1948-12-23 1952-08-19 Jencick Stephen Diesel motor
US20040198464A1 (en) * 2003-03-04 2004-10-07 Jim Panian Wireless communication systems for vehicle-based private and conference calling and methods of operating same
US7784436B2 (en) 2004-06-10 2010-08-31 Achates Power, Inc. Two-cycle, opposed-piston internal combustion engine
US20050274332A1 (en) * 2004-06-10 2005-12-15 Lemke James U Two-cycle, opposed-piston internal combustion engine
US7360511B2 (en) 2004-06-10 2008-04-22 Achates Power, Inc. Opposed piston engine
US20080163848A1 (en) * 2004-06-10 2008-07-10 Achates Power, Inc. Opposed piston engine with piston compliance
US20080314688A1 (en) * 2004-06-10 2008-12-25 Achates Power, Inc. Internal combustion engine with provision for lubricating pistons
US7546819B2 (en) 2004-06-10 2009-06-16 Achates Power. Two-stroke, opposed-piston internal combustion engine
US7156056B2 (en) 2004-06-10 2007-01-02 Achates Power, Llc Two-cycle, opposed-piston internal combustion engine
US7591235B2 (en) 2004-06-10 2009-09-22 Achates Power, Inc. Opposed piston engine with piston compliance
US20100012055A1 (en) * 2004-06-10 2010-01-21 Achates Power, Inc. Cylinder and piston assemblies for opposed piston engines
US8281755B2 (en) 2004-06-10 2012-10-09 Achates Power, Inc. Internal combustion engine with provision for lubricating pistons
US20100186723A1 (en) * 2004-06-10 2010-07-29 Achates Power, Llc Two-cycle, opposed-piston internal combustion engine
US7549401B2 (en) 2004-06-10 2009-06-23 Achates Power, Inc. Two-cycle, opposed-piston internal combustion engine
US7861679B2 (en) 2004-06-10 2011-01-04 Achates Power, Inc. Cylinder and piston assemblies for opposed piston engines
US8096270B2 (en) * 2007-11-08 2012-01-17 Toyota Jidosha Kabushiki Kaisha Cylinder block and method for manufacturing the same
US20100175641A1 (en) * 2007-11-08 2010-07-15 Satoshi Yamada Cylinder block and method for manufacturing the same
US20100212637A1 (en) * 2009-02-20 2010-08-26 Achates Power, Inc. Cylinder and piston assemblies for opposed piston engines
US20100212638A1 (en) * 2009-02-20 2010-08-26 Achates Power, Inc. Opposed piston engines with controlled provision of lubricant for lubrication and cooling
US20100212613A1 (en) * 2009-02-20 2010-08-26 Achates Power, Inc. Multi-Cylinder opposed piston engines
US9328692B2 (en) 2009-02-20 2016-05-03 Achates Power, Inc. Opposed piston engines with controlled provision of lubricant for lubrication and cooling
US8539918B2 (en) 2009-02-20 2013-09-24 Achates Power, Inc. Multi-cylinder opposed piston engines
US8550041B2 (en) 2009-02-20 2013-10-08 Achates Power, Inc. Cylinder and piston assemblies for opposed piston engines
US9341104B2 (en) 2011-07-29 2016-05-17 Achates Power, Inc. Impingement cooling of cylinders in opposed-piston engines
WO2013019433A1 (en) * 2011-07-29 2013-02-07 Achates Power, Inc. Impingement cooling of cylinders in opposed-piston engines
US9771861B2 (en) 2014-09-09 2017-09-26 Avl Powertrain Engineering, Inc. Opposed piston two-stroke engine with thermal barrier
US10036344B2 (en) 2015-02-27 2018-07-31 Avl Powertrain Engineering, Inc. Opposed piston two stroke engine liner construction
US10072604B2 (en) 2015-02-27 2018-09-11 Avl Powertrain Engineering, Inc. Engine block construction for opposed piston engine
US20160290277A1 (en) * 2015-03-31 2016-10-06 Achates Power, Inc. Cylinder Liner For An Opposed-Piston Engine
US9845764B2 (en) * 2015-03-31 2017-12-19 Achates Power, Inc. Cylinder liner for an opposed-piston engine
US20180058368A1 (en) * 2015-03-31 2018-03-01 Achates Power, Inc. Cylinder liner for an opposed-piston engine
US10677188B2 (en) * 2015-03-31 2020-06-09 Achates Power, Inc. Cylinder liner for an opposed-piston engine
US10156202B2 (en) 2016-03-04 2018-12-18 Achates Power, Inc. Barrier ring and assembly for a cylinder of an opposed-piston engine
WO2023215245A1 (en) * 2022-05-02 2023-11-09 Enginuity Power Systems, Inc. Multi-fuel engines and related methods

Also Published As

Publication number Publication date
FR910681A (en) 1946-06-14
GB582569A (en) 1946-11-20
DE863870C (en) 1953-01-19

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