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US2159402A - Piston - Google Patents

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Publication number
US2159402A
US2159402A US254081A US25408139A US2159402A US 2159402 A US2159402 A US 2159402A US 254081 A US254081 A US 254081A US 25408139 A US25408139 A US 25408139A US 2159402 A US2159402 A US 2159402A
Authority
US
United States
Prior art keywords
piston
plate
heat
bell
parts
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
US254081A
Other languages
English (en)
Inventor
Retschy Curt
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.)
Sulzer AG
Original Assignee
Sulzer 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
Application filed by Sulzer AG filed Critical Sulzer AG
Application granted granted Critical
Publication of US2159402A publication Critical patent/US2159402A/en
Anticipated expiration legal-status Critical
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
    • F02F3/00—Pistons 
    • F02F3/10—Pistons  having surface coverings
    • 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
    • F02F3/00—Pistons 
    • F02F3/0015—Multi-part pistons
    • F02F3/0023—Multi-part pistons the parts being bolted or screwed together
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F16J1/005—Pistons; Trunk pistons; Plungers obtained by assembling several pieces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0448—Steel

Definitions

  • This invention relates to a piston primarily intended for use yin an internal combustion engine.
  • the piston is not cooled by any positive cooling means.
  • 5 invention has for one object to provide in a piston construction means'for resisting high heat and for conducting and 4dissipatingthat heat. Another object is to provide a built-up piston y construction in which the several parts are so joined.together as to resist distortion. A still further object is to provide a built-up piston in whichthe several parts are so shaped and joined together as to provide an adequate path for the The' transfer of the heat from the zone of combustion. 1
  • Another object is to provide a piston made of a number of parts so arranged that they are positively secured together along the piston axis orv l along lines parallel vwith'that axisand are relatively free for relative radial motion.
  • Figure 1 is aulongitudinal sectiony through the piston and a portion of the engine cylinder; Y
  • Figure 2 in its left hand is a'top plan view ofthe plate'which forms the upper surface of' the piston, and in its right'hand section is a 3'0 bottomplan view;
  • Figure 3 is a top plan view ofthe or bell. ,Y r
  • I indicates a portion of a cylinder wall.v
  • a liner 2 is positioned therewith.
  • a cylinderhead 3 is mounted upon the liner and delines in part the combustion chamber.
  • a ring-like member l - is'positioned outside of the cylinder head 3 and is 40, securedinnposition upon the ⁇ cylinder jacket I by nuts and bolts 5 or by screws or ⁇ otherwise.
  • a 5 are cooling spaces formed'inthe cylinder-head and ⁇ 1 are coolingspaces lformed between'thev u types of'enginesand in fact a piston of the type piston body
  • Like'partjsf are designated by like characters "I2 and Vthe'core I5 together, a central bolt IG is here shown may be used in many places where, it is desirable or necessary to provide for the resistance of the piston to heat and to provide for the dissipation of heat from the piston. 'Ihe use of the present invention is,therefore, not 5 limited to an engine.
  • main upper surface of the piston is formed by a highly heat-resistant plate II, which overlies substantially the whole surface of the piston with the exception of that which is defined by l0 the ring-like member III, which is shaped to overlie and in part to, support the uppermost piston p ring.
  • Themain piston body or bell comprises a member I2 having a depending integral skirt I3, within which is positioned a number of piston rings Il. As above mentioned, the uppermost of the piston rings is in contact with the member Il).
  • a core I5 of material having high heat conductivity Positioned within the hollow deiined by the piston face I2 andthe skirt I3 is a core I5 of material having high heat conductivity.
  • One suitable material is aluminum. This core serves to conduct heat from the plate I I to the member I2 and thence to the skirt I3.
  • is provided. These bolts serve merely the'purpose of holding the surface plate II to the portion -I1 of the piston. Clearance-y is provided between the bolts and the member I2.. A number of additional and longer bolts 22 is also provided and these secure the core I5 in position within the piston I2. Clearance y is provided about the bolts 22 just as it is provided about the bolts 2
  • a spacing sleeve 23 is provided about the bolts 2l and is of material preferably more or less self-lubricating. Nutsf2l are positioned upon the bo1ts2l. A sleeve 23d of similar materialis provided about the lbolts'22, and
  • v and 22 f hold the plate-II, inplaoe and prevent its distortion when it is'heated. In particular; they prevent buckling or 'warping-of this plate, but
  • 'I'he remainder ofthe piston and connecting y rod construction need not be shown.
  • they may comprise a ring-like portion 26, which is held in place in the piston assembly by'the bolts 22; and they may vinclude other parts 21, shown only in part, and th necessary bearings 'and bearing supports for connection to the connecting rod.
  • 'I'heseparts are omitted because they'iorm no essential part'of the present invention and are not necessary for an ing ofit.
  • the piston may be used in anyplace where it is desirable to havel a piston so arrangedthat it can dissipate heat adehuately and without dis. tortion.v As shown, it is applied to an intern lcombustion engine of the injection type.
  • the piston is positioned in'a cylinderand is secured to 'a connecting rod in any ⁇ desired manner.
  • a main piston bell having an outer end member and a skirt, a separate surface 'member of highly heat-resistant material positioned onthe outer end of said vpiston and deilningthe outer end surface of the .,piston, and a .core member of in the said piston, and means for 'securing the three together in heat transfer relation, said -means permitting relative.
  • radial movement o f 2.
  • a main piston bell v having an outer end member and a means permitting relative radial Amovement of ⁇ the three and preventing their axial separation. 3.
  • a piston comprising a main bell member, having an end member and a skirt, ⁇ a heat protecting surface plate attached to said piston positioned above the surfacel of its en d member, and means positioned between the opposing surfaces of the piston and the plate .adapted to hold them largely out of contact, the said means comprising the sole contact between the said two surfaces, and an attachment 1.5 limited contact with the heat-resistant plate II. joining' the the piston together.
  • said attachment adapted -to permit relative radial Vmovement ofthe two.
  • a surface plate attached to said piston positioned above the surface of itsjend member, -'and' formed of highly heat-resistant material, and means positioned between the opposing surfaces of the piston and the plate adapted to hold them largely out of' contact, .the said means comprising the sole contact ,between the said two surfaces, and an 'attachment joining the plate and the piston together, saidattachment adapted to permit relative radial move- .ment of the two. f
  • a. surface plate attached to said piston positioned above the surface of its end member and formed of highly heat-resistant material, and means positioned between the opposing surfaces of the piston and the plate adapted to hold them largely out of contact, the said means com--A prising 'the sole contact between the said two surfaces, and an attachment 'joining the plate Aand the piston together, said attachment adapted to permit relative radial movement of the two and adapted to hold them against axial separation.
  • a piston bell having a top plate and a downwardly depending skirt integral therewith, a heat-resistant plate positioned above and supported upon said piston bell, a core formed of a highly heat-conductive material positioned within said piston, and means positioned approximately on the line of the longitudinal axis of said piston, said means securing .the plate, the piston bell and -the coretogether; the piston bell being provided in' its outer surface with a number ofraised members, additional attaching means, some engaging said plate and holding it to the upper surface of said bell and others engaging said bell and holding said core in place, the parts being

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
US254081A 1938-01-29 1939-02-01 Piston Expired - Lifetime US2159402A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH206806T 1938-01-29

Publications (1)

Publication Number Publication Date
US2159402A true US2159402A (en) 1939-05-23

Family

ID=4445230

Family Applications (1)

Application Number Title Priority Date Filing Date
US254081A Expired - Lifetime US2159402A (en) 1938-01-29 1939-02-01 Piston

Country Status (4)

Country Link
US (1) US2159402A (de)
CH (1) CH206806A (de)
FR (1) FR845811A (de)
GB (1) GB522113A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748579C (de) * 1940-06-22 1944-11-04 Kolben fuer Zweitakmotoren
US2743143A (en) * 1953-03-30 1956-04-24 Maybach Motorenbau Gmbh Screw connection for multipartite pistons of internal combustion engines
US2947582A (en) * 1958-10-23 1960-08-02 Laagewaard Paul Leonel Light metal piston with plated head
US4083292A (en) * 1976-06-16 1978-04-11 Caterpillar Tractor Co. Piston with high top ring location
US4346646A (en) * 1977-12-28 1982-08-31 Mahle Gmbh Piston for internal combustion engines
US5724933A (en) * 1995-03-09 1998-03-10 Wartsila Diesel International Ltd Oy Piston unit for an internal combustion engine
US20080041333A1 (en) * 2006-08-18 2008-02-21 Mark Wayne Jarrett Engine piston having an insulating air gap
US9810174B2 (en) 2011-11-04 2017-11-07 Achates Power, Inc. Constructions for piston thermal management

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1039782B (de) * 1956-04-19 1958-09-25 Ueberseehandel M B H Ges Brennkraftmaschine, z. B. Zweitaktmaschine
DE2612041A1 (de) * 1975-05-05 1976-11-25 Caterpillar Tractor Co Rotor fuer drehkolbenmaschinen
US4404935A (en) * 1981-04-27 1983-09-20 Kyocera International, Inc. Ceramic capped piston
US4453527A (en) * 1981-12-28 1984-06-12 Ford Motor Company Insulated diesel engine combustion chamber

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748579C (de) * 1940-06-22 1944-11-04 Kolben fuer Zweitakmotoren
US2743143A (en) * 1953-03-30 1956-04-24 Maybach Motorenbau Gmbh Screw connection for multipartite pistons of internal combustion engines
US2947582A (en) * 1958-10-23 1960-08-02 Laagewaard Paul Leonel Light metal piston with plated head
US4083292A (en) * 1976-06-16 1978-04-11 Caterpillar Tractor Co. Piston with high top ring location
US4346646A (en) * 1977-12-28 1982-08-31 Mahle Gmbh Piston for internal combustion engines
US5724933A (en) * 1995-03-09 1998-03-10 Wartsila Diesel International Ltd Oy Piston unit for an internal combustion engine
US5975040A (en) * 1995-03-09 1999-11-02 Wartsila Diesel International Oy Piston unit for an internal combustion engine
US20080041333A1 (en) * 2006-08-18 2008-02-21 Mark Wayne Jarrett Engine piston having an insulating air gap
WO2008127249A2 (en) * 2006-08-18 2008-10-23 Caterpillar Inc. Engine piston having an insulating air gap
WO2008127249A3 (en) * 2006-08-18 2009-01-15 Caterpillar Inc Engine piston having an insulating air gap
US7654240B2 (en) 2006-08-18 2010-02-02 Caterpillar Inc. Engine piston having an insulating air gap
US9810174B2 (en) 2011-11-04 2017-11-07 Achates Power, Inc. Constructions for piston thermal management

Also Published As

Publication number Publication date
GB522113A (en) 1940-06-10
CH206806A (de) 1939-08-31
FR845811A (fr) 1939-09-04

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