SE518916C2 - Device for an internal combustion engine - Google Patents

Device for an internal combustion engine

Info

Publication number
SE518916C2
SE518916C2 SE0101282A SE0101282A SE518916C2 SE 518916 C2 SE518916 C2 SE 518916C2 SE 0101282 A SE0101282 A SE 0101282A SE 0101282 A SE0101282 A SE 0101282A SE 518916 C2 SE518916 C2 SE 518916C2
Authority
SE
Sweden
Prior art keywords
plane
crankcase
cylinder
cylinder foot
combustion engine
Prior art date
Application number
SE0101282A
Other languages
Swedish (sv)
Other versions
SE0101282D0 (en
SE0101282L (en
Inventor
Peter Bjoerkman
Original Assignee
Electrolux Ab
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 Electrolux Ab filed Critical Electrolux Ab
Priority to SE0101282A priority Critical patent/SE518916C2/en
Publication of SE0101282D0 publication Critical patent/SE0101282D0/en
Priority to PCT/SE2002/000703 priority patent/WO2002084166A1/en
Publication of SE0101282L publication Critical patent/SE0101282L/en
Publication of SE518916C2 publication Critical patent/SE518916C2/en

Links

Classifications

    • 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
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • 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
    • F02F7/00—Casings, e.g. crankcases or frames

Landscapes

  • 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)

Abstract

This invention relates to an arrangement for an internal combustion engine comprising at least one cylinder (19) with a cylinder foot plane (20), a crankcase with a crankcase plane (16) against which the cylinder foot plane (20) is intended to abut and a crankshaft (13). The crankcase plane (16) or the cylinder foot plane (20) are provided with a slightly V-shaped surface such that the cylinder foot plane (20) when the cylinder is being assembled first abuts the crankcase plane (16) at diametrically opposite points of the cylinder foot plane (20).

Description

:tunn :ii-i 518 916 1:. 2 Föreliggande uppfinning har till syfte att åstadkomma ett arrangemang där cylinderfotsplanet alltid kommer att vila med sina referenspunkter ute vid kantema och därmed eliminera de nackdelar som angivits ovan varvid detta ernås medelst en anordning som erhållit de i patentkraven angivna kånnetecknen. : tunn: ii-i 518 916 1 :. The present invention has for its object to provide an arrangement where the cylinder foot plane will always rest with its reference points out at the edges and thereby eliminate the disadvantages stated above, this being achieved by means of a device which has obtained the carriage marks specified in the claims.

Ett utföringsexempel av uppfinningen kommer nu att beskrivas med hänvisning till bifogad ritning på vilken fig 1 visar ett vertikalsnitt genom en del av en förbräriningsmotor där uppfinningen är avsedd att tillämpas under det att fig 2 utgör en schematisk överdriven bild av de ingående ytomas placering. _ Såsom framgår av figuren innefattar motom två separatbearbetade vevhushalvor 10 resp 1 1 som år avsedda att sammanfogas längs ett delningsplan 12. Delningsplanet sträcker sig vinkelrätt mot en i vevhushalvoma lagrad vevaxel 13 som uppbärs av lager 14 i vevhushalvoma. Vevaxeln uppbär på konventionellt sätt en exentriskt lagrad vevstake 15.An embodiment of the invention will now be described with reference to the accompanying drawing, in which fi g 1 shows a vertical section through a part of an internal combustion engine where the invention is intended to be applied while fi g 2 constitutes a schematic exaggerated view of the location of the included surfaces. As can be seen from the fi, the motor comprises two separately machined crankcase halves 10 and 1 1, respectively, which are intended to be joined together along a dividing plane 12. The dividing plane extends perpendicular to a crankshaft 13 stored in the crankcase halves supported by bearings 14 in the crankcase halves. The crankshaft conventionally supports an eccentrically mounted connecting rod 15.

Vevhushalvorna bildar tillsammans ett vevhusplan 16 som är parallellt med vevaxelns axelriktning och som formas av en på vardera vevhushalvan beflntlig plan delyta 17, 18.The crankcase halves together form a crankcase plane 16 which is parallel to the axial direction of the crankshaft and which is formed by a plane sub-surface 17, 18 which is insignificant on each crankcase half.

Dessa plana ytor är så utformade att de toleransmässigt sett lutar något (vinkeln <1) förhållande till nämnda axelriktning ochi förhållande till varandra så att det bildas en svagt V-forrnad profil med den lägsta punkten belägen i delningsplanet. Lutningen ot är sådan att vardera ytans plan toleransmässigt ligger mellan O och 0,2 mm, företrädesvis 0,05-0,1 mm, snett från absolut plant läge P.These flat surfaces are designed so that they are slightly inclined in terms of tolerance (angle <1) in relation to said axis direction and in relation to each other so that a slightly V-shaped profile is formed with the lowest point located in the pitch plane. The inclination ot is such that the plane of each surface is tolerably between 0 and 0.2 mm, preferably 0.05-0.1 mm, obliquely from the absolutely flat position P.

På vevhusplanet 16 är en cylinder 19 avsedd att placeras varvid cylindern uppvisar ett cylinderfotsplan 20 som är bearbetat så att det är helt plant. När cylindern 19 placeras på det V-formade vevhusplanet kommer således diametralt motstående delar av cylinderfotsplanet att först bringas till anliggning mot vevhusplanet varefter cylindern kan fixeras på ett sådant sätt att de i ingressen nämnda nackdelarna elimineras.On the crankcase plane 16, a cylinder 19 is intended to be placed, the cylinder having a cylinder foot plane 20 which has been machined so that it is completely flat. Thus, when the cylinder 19 is placed on the V-shaped crankcase plane, diametrically opposite parts of the cylinder foot plane will first be brought into abutment against the crankcase plane, after which the cylinder can be fixed in such a way that the disadvantages mentioned in the preamble are eliminated.

Det är givetvis inom uppfinningens ram även möjligt att åstadkomma samma effekt genom att istället utforma cylinderfotsplanet så att det blir svagt V-format vilket dock ur bearbetningssynpunkt blir mer komplicerat.Of course, within the scope of the invention, it is also possible to achieve the same effect by instead designing the cylinder foot plane so that it becomes slightly V-shaped, which, however, from a machining point of view becomes more complicated.

Claims (5)

:vara :snor 518 916 Patentkrav: item: cord 518 916 Patent claim 1. Anordning vid en fórbrärmingsmotor som innefattar åtminstone en cylinder (19) med ett cylinderfotsplan (20), två vevhushalvor (10,1 1) som tillsammans bildar ett vevhusplan (16) mot vilket cylinderfotsp1anet(20) är avsett att anligga samt en vevaxel (13), kännetecknad därav, att att vevhusplanet (16) eller cylinderfotsplanet (20) uppvisar en svagt V-fonnad yta så att cylinderfotsplanet (20) vid cylinderns montering först kommer till anliggning mot vevhusplanet (16) vid diametralt motstående punkter av cylinderfotsplanet (20).Device for an internal combustion engine comprising at least one cylinder (19) with a cylinder foot plane (20), two crankcase halves (10,1 1) which together form a crankcase plane (16) against which the cylinder foot plate (20) is intended to abut and a crankshaft (13), characterized in that the crankcase plane (16) or the cylinder foot plane (20) has a slightly V-shaped surface so that the cylinder foot plane (20) during mounting of the cylinder first comes into contact with the crankcase plane (16) at diametrically opposite points of the cylinder foot plane ( 20). 2. Anordning enligt patentkravet 1, kännetecknad därav, att vevhusha1vorna(10,11) är separatbearbetade.Device according to Claim 1, characterized in that the crankcase cavities (10, 11) are machined separately. 3. Anordning enligt patentkravet 2, kännetecknad därav, att delningsplanet (12) mellan vevhushalvorna ( 10,1 1) är anordnat vinkelrätt mot vevaxeln (13).Device according to Claim 2, characterized in that the dividing plane (12) between the crankcase halves (10, 1) is arranged perpendicular to the crankshaft (13). 4. Anordning enligt patentkravet 3, kännetecknad därav, att den V-forrnade ytan är utformad så att lägsta punkten av vevhusplanet (16) är belägen vid delningsplanet (12).Device according to claim 3, characterized in that the V-shaped surface is designed so that the lowest point of the crankcase plane (16) is located at the dividing plane (12). 5. Anordning enligt något av föregående patentkrav, kännetecknad därav, att lutningen ( a) hos de delytor (17,18) som bildar V-forrnen är sådan att vardera ytans plan toleransmässigt ligger mellan 0 och 0,2 mm, företrädesvis 0,05-0,1 mm, snett från absolut plant läge (P).Device according to one of the preceding claims, characterized in that the slope (a) of the sub-surfaces (17, 18) forming the V-shapes is such that the plane of each surface is tolerably between 0 and 0.2 mm, preferably 0.05 -0.1 mm, oblique from absolute flat position (P).
SE0101282A 2001-04-11 2001-04-11 Device for an internal combustion engine SE518916C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE0101282A SE518916C2 (en) 2001-04-11 2001-04-11 Device for an internal combustion engine
PCT/SE2002/000703 WO2002084166A1 (en) 2001-04-11 2002-04-10 Arrangement in an internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0101282A SE518916C2 (en) 2001-04-11 2001-04-11 Device for an internal combustion engine

Publications (3)

Publication Number Publication Date
SE0101282D0 SE0101282D0 (en) 2001-04-11
SE0101282L SE0101282L (en) 2002-10-12
SE518916C2 true SE518916C2 (en) 2002-12-03

Family

ID=20283750

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0101282A SE518916C2 (en) 2001-04-11 2001-04-11 Device for an internal combustion engine

Country Status (2)

Country Link
SE (1) SE518916C2 (en)
WO (1) WO2002084166A1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0992660B1 (en) * 1997-06-11 2003-12-10 Komatsu Zenoah Co. Stratified scavenging two-cycle engine
JP3153520B2 (en) * 1998-10-30 2001-04-09 小松ゼノア株式会社 Stratified scavenging two-cycle engine

Also Published As

Publication number Publication date
SE0101282D0 (en) 2001-04-11
WO2002084166A1 (en) 2002-10-24
SE0101282L (en) 2002-10-12

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