US1791920A - Cylinder head for internal-combustion engines - Google Patents

Cylinder head for internal-combustion engines Download PDF

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Publication number
US1791920A
US1791920A US450081A US45008130A US1791920A US 1791920 A US1791920 A US 1791920A US 450081 A US450081 A US 450081A US 45008130 A US45008130 A US 45008130A US 1791920 A US1791920 A US 1791920A
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US
United States
Prior art keywords
cylinder head
combustion engines
internal
peripheral wall
head
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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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US450081A
Inventor
Buchi Alfred
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Schweizerische Lokomotiv und Maschinenfabrik AG (SLM)
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Schweizerische Lokomotiv und Maschinenfabrik AG (SLM)
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Expired - Lifetime legal-status Critical Current

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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 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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 
    • F02F1/24—Cylinder heads
    • F02F2001/244—Arrangement of valve stems in cylinder heads
    • F02F2001/247—Arrangement of valve stems in cylinder heads the valve stems being orientated in parallel with the cylinder axis

Definitions

  • This invention relates to the construction of cylinder heads for internal combustion engines.
  • the inner chamber or valve box of the cylinder head which is in communication with the combustion chamber, is completely free at its lower end from the outer peripheral wall of the head but is connected to the upper part of this wall and to the top of the head by inclined ribs, the length and the moment of resistance of these ribs being so calculated that when the inner part of the cylinder head expands the ribs bend without liability to fracture.
  • the lower end of the inner chamber may be strengthened by the application of a cylindrical ring made of an exceedingly ductile material and which may be shrunk-011.
  • Figures 1 and 2 of the accompanying drawing illustrate a construction according to the invention in respective longitudinal and cross sections, applied by way of example to" a cylinder head or cover for an engine with four valves in each head.
  • the inner chamber or Valve box of the head 1 is completely free at its lower end 2 from the outer peripheral wall 3 a space 4 being left betweenthese two parts. 5 is the upper wall or top of the head-and 6 are the valve ports.
  • the lower end 2 of the head is connected to the upper part of the wall 3 and to the top 5 by means of relatively narrow but long inclined ribs 7.
  • the length of the ribs 7 and their moment of resistance are calculated so that when the innerpart of the head expands the ribs bend without liability to fracture.
  • 8 is a cylindrical strengthening ring which according to the invention is applied to the lower end 2 and may be shrunk-on.
  • a cylinder head for internal combustion engines comprising an upper wall, an outer peripheral wall dependingdrom said upper wall, an'inner chamber, forming a valve box and provided with valve ports, the peripheral wall and separated therefrom by a space and a plurality of inclined ribs connecting the lower end of said chamber to the upper part of said outer peripheral wall and to the upper wall of the cylinder head, said ribs being dimensioned to bend without fracture on expansion of the peripheral wall of the inner chamber.
  • a cylinder head for internal combustion engines comprising an upper wall, an outer peripheral wall depending from said upper wall, an inner chamber forming a valve box and provided with valve ports, the peripheral Wall of said chamber being completely free at its lower end from said outer peripheral wall and separated therefrom by a space, a plura-lity of inclined ribs connecting the lower end of said chamber to the upper part of said outer peripheral wall and to the upper wall of the cylinder head, said ribs being dimensioned to bend without fracture on expansion of the peripheral wall of the inner chamber, and a strengthening ring of an exceedingly ductile material, which may be shrunk-on applied to the lower end of said peripheral wall,

Description

Feb."10, 1931. A. BUCHI CYLINDER HEAD FOR INTERNAL COMBUSIEIOK EHGIKES H Filed May 6. 1930 f -VENTOR;
5 Anal-soy.
Patented Feb. 10, 1931 UNITED STATES PATENT- OFFICE ALFRED B ll CHI, OF WINTER'IHUR, SWITZERLAND, ASSIGNOR '10 SWISS LOCOMOTIVE AND MACHINE WORKS, 013 WINTERTHUR, SWITZERLAND, A CORPORATION OF SWITZERLAND CYLINDER HEAD FOR INTERNAL-COMBUSTION ENGINES Application filed May 6, 1930, Serial No. 450,081, and in Switzerland January 23, 19539.
This invention relates to the construction of cylinder heads for internal combustion engines.
According to the present invention the inner chamber or valve box of the cylinder head, which is in communication with the combustion chamber, is completely free at its lower end from the outer peripheral wall of the head but is connected to the upper part of this wall and to the top of the head by inclined ribs, the length and the moment of resistance of these ribs being so calculated that when the inner part of the cylinder head expands the ribs bend without liability to fracture. The lower end of the inner chamber may be strengthened by the application of a cylindrical ring made of an exceedingly ductile material and which may be shrunk-011.
Figures 1 and 2 of the accompanying drawing illustrate a construction according to the invention in respective longitudinal and cross sections, applied by way of example to" a cylinder head or cover for an engine with four valves in each head.
Referring to the drawing it will be seen that as previously indicated the inner chamber or Valve box of the head 1 is completely free at its lower end 2 from the outer peripheral wall 3 a space 4 being left betweenthese two parts. 5 is the upper wall or top of the head-and 6 are the valve ports.
According to the invention the lower end 2 of the head is connected to the upper part of the wall 3 and to the top 5 by means of relatively narrow but long inclined ribs 7. The length of the ribs 7 and their moment of resistance are calculated so that when the innerpart of the head expands the ribs bend without liability to fracture. 8 is a cylindrical strengthening ring which according to the invention is applied to the lower end 2 and may be shrunk-on.
I claim 1. A cylinder head for internal combustion engines comprising an upper wall, an outer peripheral wall dependingdrom said upper wall, an'inner chamber, forming a valve box and provided with valve ports, the peripheral wall and separated therefrom by a space and a plurality of inclined ribs connecting the lower end of said chamber to the upper part of said outer peripheral wall and to the upper wall of the cylinder head, said ribs being dimensioned to bend without fracture on expansion of the peripheral wall of the inner chamber.
2. A cylinder head for internal combustion engines comprising an upper wall, an outer peripheral wall depending from said upper wall, an inner chamber forming a valve box and provided with valve ports, the peripheral Wall of said chamber being completely free at its lower end from said outer peripheral wall and separated therefrom by a space, a plura-lity of inclined ribs connecting the lower end of said chamber to the upper part of said outer peripheral wall and to the upper wall of the cylinder head, said ribs being dimensioned to bend without fracture on expansion of the peripheral wall of the inner chamber, and a strengthening ring of an exceedingly ductile material, which may be shrunk-on applied to the lower end of said peripheral wall,
so that said peripheral wall is released from the inner pressure.
Signed at Zurich this 17th day of April, 1930.
ALFRED BUCI'II.
US450081A 1929-01-23 1930-05-06 Cylinder head for internal-combustion engines Expired - Lifetime US1791920A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1791920X 1929-01-23

Publications (1)

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US1791920A true US1791920A (en) 1931-02-10

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