US3659568A - Cylinders for air-cooled reciprocable piston internal combustion engines - Google Patents

Cylinders for air-cooled reciprocable piston internal combustion engines Download PDF

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Publication number
US3659568A
US3659568A US96212A US3659568DA US3659568A US 3659568 A US3659568 A US 3659568A US 96212 A US96212 A US 96212A US 3659568D A US3659568D A US 3659568DA US 3659568 A US3659568 A US 3659568A
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US
United States
Prior art keywords
cylinders
cylinder
fins
pertaining
adjacent
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
US96212A
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English (en)
Inventor
Hans-Ulrich Howe
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.)
Kloeckner Humboldt Deutz AG
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Kloeckner Humboldt Deutz AG
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
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Publication of US3659568A publication Critical patent/US3659568A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/04—Cylinders; Cylinder heads  having cooling means for air cooling
    • F02F1/06—Shape or arrangement of cooling fins; Finned cylinders

Definitions

  • the present invention relates to an air-cooled multicylinder reciprocable piston engine with cylinders arranged in series and equipped with transverse fins.
  • the preferred circular shape of the fin contour is, in order to obtain a compact construction, somewhat flattened with serially arranged cylinders and, more specifically, in the region where two adjacent cylinders are closest to each other. This means a reduction in the height of the fins in the said region.
  • a further interruption of the circular shape of the fin contour is caused by cutouts or recesses for the passage of the cylinder head connecting screws. These screws have to be arranged as close as possible to the cylinder wall in order to reduce the bending moment in the bottom of the cylinder head between the cylinder head sealing surface and the point of attack of the connecting screws.
  • German Pat. No. 964,820 it is known to counteract the deformation of the cylinder caused by recesses in the fins within the region of the tie rods, by providing slots extending parallel to the cylinder axis between the recesses for the tie rods and in this way to modify the deformations into a possibly uniform polygon so that a more even supporting structure of the piston will be obtained.
  • FIG. 1 diagrammatically illustrates a view of a cylinder pertaining to a reciprocable piston engine.
  • FIG. 1a is a section along along the line lala of FIG. 2.
  • FIG. 2 is a top view of the cylinder shown in FIG. 1 while illustrating in dot-dash lines the contour of an adjacent cylinder.
  • An air-cooled multi-cylinder reciprocable piston engine with cylinders arranged in series and equipped with fins is, according to the present invention, characterized in that each two adjacent cylinders including the pertaining cylinder heads are, by means of a tie rod common thereto and located between said cylinders or by means of a plurality of tie rods,
  • cooling fins especially those of the working cylinders have within the region of the tie rod or tie rods approximately semicircular recesses of only slight depth, the line of confinement of which extends continually.
  • the recess in said ribsor fins in the region of the tie rods are precast so that a very economical manufacture will be obtained.
  • FIG. 1 shows a cylinder 1 with transverse fins, comprising the fin-equipped section 2 and the lower shank portion 3 which is free from fins.
  • FIG. 2 shows the circular sealing surface 4 of cylinder 1 for engagement with a corresponding sealing surface of the cylinder head.
  • the circular shape of the fin contour 5 shows flat portions 6 at two sections located opposite to each other, in order to reduce the distance between two adjacent working cylinders and to thereby obtain a compact structure.
  • Recesses 8 defined by a flat are having a radius r are provided in the fin contour for the tie rods 7. These recesses 8 gradually merge through rounded portions 9 with the contour 5 of the fins.

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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)
US96212A 1969-12-10 1970-12-08 Cylinders for air-cooled reciprocable piston internal combustion engines Expired - Lifetime US3659568A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691961803 DE1961803B1 (de) 1969-12-10 1969-12-10 Zylinder fuer luftgekuehlte Hubkolbenmaschine

Publications (1)

Publication Number Publication Date
US3659568A true US3659568A (en) 1972-05-02

Family

ID=5753401

Family Applications (1)

Application Number Title Priority Date Filing Date
US96212A Expired - Lifetime US3659568A (en) 1969-12-10 1970-12-08 Cylinders for air-cooled reciprocable piston internal combustion engines

Country Status (5)

Country Link
US (1) US3659568A (de)
AT (1) AT325348B (de)
DE (1) DE1961803B1 (de)
FR (1) FR2065950A5 (de)
GB (1) GB1265937A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4387678A (en) * 1979-09-19 1983-06-14 Klockner-Humboldt Deutz Aktiengesellschaft Light metal cylinder head for internal combustion engines
US4408483A (en) * 1981-08-21 1983-10-11 Harris Corporation Engine monitoring system
US5095868A (en) * 1990-03-23 1992-03-17 Vm Motori S.P.A. Clamping device for the cylinder heads of aero engines
US5657729A (en) * 1995-08-16 1997-08-19 Northrop Grumman Corporation Fiber reinforced ceramic matrix composite cylinder head and cylinder head liner for an internal combustion engine
US6283081B1 (en) * 1997-01-31 2001-09-04 Suzuki Motor Corporation Cylinder structure of internal combustion engine
US20060155449A1 (en) * 2004-12-17 2006-07-13 Ludwig Dammann Data generation and transmission system in agricultural working machines

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR829703A (fr) * 1936-11-24 1938-07-05 Ets Ringhoffer Tatra Sa Disposition de nervures de refroidissement pour cylindres à refroidissement par l'air, en particulier des moteurs à cylindres en ligne
FR899161A (fr) * 1942-09-14 1945-05-23 Oesterr Saurerwerke Ag Perfectionnements aux moteurs à combustion interne à refroidissement par air
US2608962A (en) * 1950-05-19 1952-09-02 Kloeckner Humboldt Deutz Ag Working cylinder for air-cooled combustion engines
DE942058C (de) * 1953-10-02 1956-04-26 Kloeckner Humboldt Deutz Ag Luftgekuehlte Brennkraftmaschine
US2883997A (en) * 1954-12-27 1959-04-28 Midland Steel Prod Co Relay valves
GB871917A (en) * 1959-05-08 1961-07-05 Kloeckner Humboldt Deutz Ag Improvements in cylinders for internal combustion engines

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR829703A (fr) * 1936-11-24 1938-07-05 Ets Ringhoffer Tatra Sa Disposition de nervures de refroidissement pour cylindres à refroidissement par l'air, en particulier des moteurs à cylindres en ligne
FR899161A (fr) * 1942-09-14 1945-05-23 Oesterr Saurerwerke Ag Perfectionnements aux moteurs à combustion interne à refroidissement par air
US2608962A (en) * 1950-05-19 1952-09-02 Kloeckner Humboldt Deutz Ag Working cylinder for air-cooled combustion engines
DE942058C (de) * 1953-10-02 1956-04-26 Kloeckner Humboldt Deutz Ag Luftgekuehlte Brennkraftmaschine
US2883997A (en) * 1954-12-27 1959-04-28 Midland Steel Prod Co Relay valves
GB871917A (en) * 1959-05-08 1961-07-05 Kloeckner Humboldt Deutz Ag Improvements in cylinders for internal combustion engines

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4387678A (en) * 1979-09-19 1983-06-14 Klockner-Humboldt Deutz Aktiengesellschaft Light metal cylinder head for internal combustion engines
US4408483A (en) * 1981-08-21 1983-10-11 Harris Corporation Engine monitoring system
US5095868A (en) * 1990-03-23 1992-03-17 Vm Motori S.P.A. Clamping device for the cylinder heads of aero engines
US5657729A (en) * 1995-08-16 1997-08-19 Northrop Grumman Corporation Fiber reinforced ceramic matrix composite cylinder head and cylinder head liner for an internal combustion engine
US6283081B1 (en) * 1997-01-31 2001-09-04 Suzuki Motor Corporation Cylinder structure of internal combustion engine
US20060155449A1 (en) * 2004-12-17 2006-07-13 Ludwig Dammann Data generation and transmission system in agricultural working machines
US7640092B2 (en) 2004-12-17 2009-12-29 Claas Selbstfahrende Enrtemaschinen Gmbh Data generation and transmission system in agricultural working machines

Also Published As

Publication number Publication date
DE1961803B1 (de) 1971-06-09
FR2065950A5 (de) 1971-08-06
GB1265937A (de) 1972-03-08
AT325348B (de) 1975-10-10

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