EP0995893A2 - Cast internal combustion engine block - Google Patents

Cast internal combustion engine block Download PDF

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Publication number
EP0995893A2
EP0995893A2 EP99118689A EP99118689A EP0995893A2 EP 0995893 A2 EP0995893 A2 EP 0995893A2 EP 99118689 A EP99118689 A EP 99118689A EP 99118689 A EP99118689 A EP 99118689A EP 0995893 A2 EP0995893 A2 EP 0995893A2
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Prior art keywords
housing
bearing
machine
fillet
machine housing
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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.)
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EP99118689A
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German (de)
French (fr)
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EP0995893A3 (en
EP0995893B1 (en
Inventor
Andreas Keber
Franz Malischew
Rudolf Wimmer
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke 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
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0043—Arrangements of mechanical drive elements
    • F02F7/0053—Crankshaft bearings fitted in the crankcase

Definitions

  • the invention relates to cast machine housing of a reciprocating piston machine, in particular Internal combustion engine, in which a crankshaft bearing bracket in between in Cylinders longitudinally spaced in the machine direction are arranged along the transverse wall is, the bearing chair on both sides of a connection surface for a means Screwable bearing covers in the fillet formed in the transverse wall communicates with housing limits and also in the storage chair Threaded holes for the bearing cap screw connection are arranged.
  • Such a machine housing is for example in DE-PS 1268901 pictured.
  • Such a camp chair design results in particular with V-engines due to the oblique flow of force in the bearing bore in the bearing bracket Connection with one by the flow of force from the combustion pressure elastic constantly deforming bearing cap in its outer contact areas on Bearing chair high stress concentrations that lead to disadvantageous cracking in the areas of the fillets can lead.
  • the invention is based, for a generic Machine housing to show a design through which the power flow in is essentially past the respective fillet.
  • the advantage of the invention is that with this relatively easy to implement design Delle "in the machine housing essentially at the level of the threaded bearing bores, the force flow is essentially past the fillets. With the deflection according to the invention of the force flows resulting from the dynamic ignition back from the respective fillet area, this advantageously results in a relief of these fillet areas the advantage of increased durability of the machine housing.
  • the invention is illustrated schematically in the drawing Warehouse section of a machine housing described.
  • a cast machine housing 1 of an internal combustion engine, not shown 2 includes one in a spaced between machine longitudinal direction Cylinders 3 extending transverse wall 4 arranged crankshaft bearing bracket 5.
  • Bearing cover 7 formed in the transverse wall 4 fillets 8 with housing limits 9 in connection.
  • For screwing the bearing cap 7 to the Bearing bracket 5 are arranged in this threaded bore 10, preferably in each case two threaded bores 10 on the side of each half bearing bore 11 in the bearing bracket 5.
  • This configuration ensures that the fillet 8 is sufficiently distant from the deflected flow of force.
  • Each housing boundary 9 can be the outer boundary of the machine housing 1 form.
  • the housing delimitation 9 is preferably part of an on the outside Machine housing 1 trained channel 18, for example as a Oil return channel 19 is designed.
  • the outer contour profile 12 in which can be formed by means of a casting core a hollow profile stiffening the outer wall of the machine housing 1 is involved.
  • This above-described housing design can also be used for one Machine housings with cylinders arranged in series are used to the power flow away from a fillet to the bearing cap screw to steer.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The machine housing has a crankshaft cradle (5) in a transverse wall (4) between cylinders, whereby the cradle is connected to a housing boundary (9) via hollow channels (8) in the transverse wall on both sides of a connecting surface for a bearing plate (7). Threaded bores (10) in the cradle accept bearing plate bolts. The outer profile of the housing boundary, which is in one piece with the cradle, causes a waisted cross-sectional shape (13) in the cradle.

Description

Die Erfindung bezieht sich nach dem Oberbegriff des Patentanspruches 1 auf ein gegossenes Maschinengehäuse einer Hubkolbenmaschine, insbesondere Brennkraftmaschine, bei der ein Kurbelwellen-Lagerstuhl in einer zwischen in Maschinenlängsrichtung beabstandeten Zylindern verlaufen Querwand angeordnet ist, wobei der Lagerstuhl über beiderseits einer Anschlußfläche für einen mittels Verschraubung anordbaren Lagerdeckel in der Querwand ausgebildeten Hohlkehlen mit Gehäusebegrenzungen in Verbindung steht und ferner im Lagerstuhl Gewindebohrungen für die Lagerdeckel-Verschraubung angeordnet sind.According to the preamble of claim 1, the invention relates to cast machine housing of a reciprocating piston machine, in particular Internal combustion engine, in which a crankshaft bearing bracket in between in Cylinders longitudinally spaced in the machine direction are arranged along the transverse wall is, the bearing chair on both sides of a connection surface for a means Screwable bearing covers in the fillet formed in the transverse wall communicates with housing limits and also in the storage chair Threaded holes for the bearing cap screw connection are arranged.

Ein derartiges Maschinengehäuse ist beispielsweise in der DE-PS 1268901 abgebildet. Eine derartige Lagerstuhlgestaltung ergibt insbesondere bei V-Motoren durch den zur Lagerbohrung im Lagerstuhl gerichteten schrägen Kraftfluß in Verbindung mit einem durch den Kraftfluß aus dem Verbrennungsdruck elastisch sich ständig verformenden Lagerdeckel in dessen äußeren Anlagebereichen am Lagerstuhl hohe Spannungskonzentrationen, die zu nachteiligen Rißbildungen in den Bereichen der Hohlkehlen führen können.Such a machine housing is for example in DE-PS 1268901 pictured. Such a camp chair design results in particular with V-engines due to the oblique flow of force in the bearing bore in the bearing bracket Connection with one by the flow of force from the combustion pressure elastic constantly deforming bearing cap in its outer contact areas on Bearing chair high stress concentrations that lead to disadvantageous cracking in the areas of the fillets can lead.

Der Erfindung liegt die Aufgabe zugrunde, für ein gattungsgemäßes Maschinengehäuse eine Gestaltung aufzuzeigen, durch die der Kraftfluß im wesentlichen an der jeweiligen Hohlkehle vorbeigeführt ist.The invention is based, for a generic Machine housing to show a design through which the power flow in is essentially past the respective fillet.

Diese Aufgabe ist mit dem Patentanspruch 1 dadurch gelöst, daß ein im wesentlichen auf Höhe der Lagerstuhl-Gewindebohrungen abschnittsweise bogenförmig einwärts zur benachbarten Gewindebohrung gerichteter äußerer Konturverlauf der mit dem Lagerstuhl einteilig verbundenen Gehäusebegrenzung zwischen dem äußeren Konturverlauf und der benachbarten Gewindebohrung einen - in Maschinenlängsrichtung gesehen - taillierten Querschnittsverlauf im Lagerstuhl bewirkt.This object is achieved with claim 1 in that an im essentially in sections at the level of the bearing bracket tapped holes arcuate inward towards the adjacent threaded hole Contour course of the housing limitation connected in one piece with the bearing bracket between the outer contour and the adjacent threaded hole - seen in the machine longitudinal direction - waisted cross-sectional profile in the storage chair causes.

Der Vorteil der Erfindung ist, daß mit dieser relativ einfach zu verwirklichenden Gestaltung einer

Figure 00020001
Delle" im Maschinengehäuse im wesentlichen auf Höhe der Lagerstuhl-Gewindebohrungen der Kraftfluß an den Hohlkehlen im wesentlichen vorbeigeführt ist. Mit der erfindungsgemäßen Umlenkung der aus den dynamischen Zündrücken resultierenden Kraftflüsse aus dem jeweiligen Hohlkehlen-Bereich ergibt in vorteilhafter Weise eine Entlastung dieser Hohlkehlen-Bereiche mit dem Vorteil einer erhöhten Dauersicherheit des Maschinengehäuses.The advantage of the invention is that with this relatively easy to implement design
Figure 00020001
Delle "in the machine housing essentially at the level of the threaded bearing bores, the force flow is essentially past the fillets. With the deflection according to the invention of the force flows resulting from the dynamic ignition back from the respective fillet area, this advantageously results in a relief of these fillet areas the advantage of increased durability of the machine housing.

Bevorzugte Ausgestaltungen der Erfindung sind in weiteren Ansprüchen beschrieben.Preferred embodiments of the invention are in further claims described.

Die Erfindung ist anhand eines in der Zeichnung schematisch dargestellten Lagerstuhl-Abschnittes eines Maschinengehäuses beschrieben.The invention is illustrated schematically in the drawing Warehouse section of a machine housing described.

Ein gegossenes Maschinengehäuse 1 einer nicht näher dargestellten Brennkraftmaschine 2 umfaßt einen in einer zwischen in Maschinenlängsrichtung beabstandeten Zylindern 3 verlaufenden Querwand 4 angeordneten Kurbelwellen-Lagerstuhl 5. Der Lagerstuhl 5 des lediglich hälftig gezeigten Maschinengehäuses 1 steht über beiderseits einer Anschlußfläche 6 für einen mittels Verschraubung anordbaren Lagerdeckels 7 in der Querwand 4 ausgebildeten Hohlkehlen 8 mit Gehäusebegrenzungen 9 in Verbindung. Für die Verschraubung des Lagerdeckels 7 mit dem Lagerstuhl 5 sind in diesem Gewindebohrungen 10 angeordnet, vorzugsweise jeweils zwei Gewindebohrungen 10 seitlich jeder hälftigen Lagerbohrung 11 im Lagerstuhl 5.A cast machine housing 1 of an internal combustion engine, not shown 2 includes one in a spaced between machine longitudinal direction Cylinders 3 extending transverse wall 4 arranged crankshaft bearing bracket 5. The bearing bracket 5 of the machine housing 1, which is only shown in half, protrudes on both sides of a connecting surface 6 for a screwable arrangement Bearing cover 7 formed in the transverse wall 4 fillets 8 with housing limits 9 in connection. For screwing the bearing cap 7 to the Bearing bracket 5 are arranged in this threaded bore 10, preferably in each case two threaded bores 10 on the side of each half bearing bore 11 in the bearing bracket 5.

Um insbesondere bei einem zum Lagerstuhl 5 schräggerichteten Kraftflußverlauf im gegossenen Maschinengehäuse 1 die Belastung im Bereich der Hohlkehle 8 zwischen dem Lagerstuhl 5 und der Gehäusebegrenzung 9 zu reduzieren, wird eine Kraftflußumlenkung durch eine erfindungsgemäße Gehäusegestaltung vorgeschlagen.In order, in particular, in the case of an oblique force flow course in relation to the bearing chair 5 cast machine housing 1 the load in the area of the fillet 8th to reduce between the bearing bracket 5 and the housing limit 9, a Force flow deflection by a housing design according to the invention suggested.

Dieser Vorschlag beinhaltet, daß ein im wesentlichen auf Höhe der Lagerstuhl-Gewindebohrungen 10 abschnittsweise bogenförmig einwärts zur benachbarten Gewindebohrung 10 gerichteter äußerer Konturverlauf 12 der mit dem Lagerstuhl 5 einteilig verbundenen Gehäusebegrenzung 9 zwischen dem äußeren Konturverlauf 12 und der benachbarten Gewindebohrung 10 einen - in Maschinenlängsrichtung gesehen - taillierten Querschnittsverlauf 13 im Lagerstuhl 5 bewirkt. Der taillierte Querschnittsverlauf ist durch die schraffierte Fläche 13 versinnbildlicht.This proposal implies that a substantially level with the bearing block tapped holes 10 in sections arched inwards to the neighboring one Threaded bore 10 directed outer contour 12 of the bearing bracket 5 integrally connected housing boundary 9 between the outer contour 12 and the adjacent threaded bore 10 one - in the machine longitudinal direction seen - waisted cross-sectional profile 13 in the bearing block 5 causes. The waisted The cross-sectional shape is symbolized by the hatched area 13.

Mittels des bogenförmigen Konturverlaufes 12 ergibt sich in vorteilhafter Weise eine Kraftfluß-Umlenkung vorbei an der Hohlkehle 8, vorzugsweise in den Bereich der Verschraubung des Lagerdeckels 7.By means of the arcuate contour course 12, one advantageously results Power flow deflection past the fillet 8, preferably in the area of Screwing the bearing cover 7.

Im weiteren ist die Erfindung vorzugsweise für ein Leichtmetall-Maschinengehäuse 1 mit V-förmig angeordneten Zylindern 3 unter einem V-Winkel α = 60° - 120° beschrieben. Hierbei dient zur konkreten Ausgestaltung des äußeren Konturverlaufes 12 eine von der Ecke 14 der Anschlußfläche 6 mit der Hohlkehle 8 unter dem jeweiligen V-Winkel ausgehende Bezugsgerade 15 zur Festlegung einer im Abstand x ≈ D/6, ausgewählt aus D = 0 - D/4, angeordneten Tangente 16 an den bogenförmigen Abschnitt 12 mit dem bevorzugten Radius R≈ D/3, gewählt aus D = D - D/6, wobei mit D" der Durchmesser der Lagerbohrung 11 im Lagerstuhl 5 gewählt ist.Furthermore, the invention is preferably described for a light metal machine housing 1 with V-shaped cylinders 3 at a V angle α = 60 ° - 120 °. In this case, a reference straight line 15, starting from the corner 14 of the connection surface 6 with the groove 8 at the respective V angle, is used for the specific configuration of the outer contour 12 to define a distance x ≈ D / 6, selected from D = 0 - D / 4 , arranged tangent 16 to the arcuate section 12 with the preferred radius R ≈ D / 3, selected D = D - D / 6 , with with D "the diameter of the bearing bore 11 in the bearing block 5 is selected.

Zur erfindungsgemäßen Dimensionierung der Hohlkehle 8 in Relation zu dem durch die erfindungsgemäße Kontur 12 umgelenkten Kraftfluß weist jede Hohlkehle 8 von der Anschlußfläche 6 aus eine Tiefe H ≈ D/15 auf, gewählt aus D = 0 - D/10, wobei der Hohlkehlen-Radius r ≈ D/15 aus D = 0 bis D/10 beträgt und der an die Gehäusebegrenzung 9 innenseitig tangential anschließende Hohlkehlen-Radius r" über eine tangential anschließende Schräge 17 mit der Ecke 14 der Anschlußfläche 6 in Verbindung steht. Mit dieser Ausgestaltung ist sichergestellt, daß die Hohlkehle 8 ausreichend entfernt vom umgelenkten Kraftfluß ist.For the dimensioning of the fillet 8 according to the invention in relation to the power flow deflected by the contour 12 according to the invention, each fillet 8 has a depth H ≈ D / 15 selected from the connection surface 6 D = 0 - D / 10 , where the fillet radius is r ≈ D / 15 from D = 0 to D / 10 and the fillet radius adjoining the housing boundary 9 on the inside tangentially r "is connected via a tangentially adjoining bevel 17 to the corner 14 of the connecting surface 6. This configuration ensures that the fillet 8 is sufficiently distant from the deflected flow of force.

Jede Gehäusebegrenzung 9 kann die Außenbegrenzung des Maschinengehäuses 1 bilden. Bevorzugt ist die Gehäusebegrenzung 9 Teil eines außenseitig am Maschinengehäuse 1 ausgebildeten Kanals 18, der beispielsweise als ein Ölrücklauf-Kanal 19 gestaltet ist. Mit den im Bereich jeder Querwand 4 bzw. jedes Lagerstuhles 5 an der Außenseite des Maschinengehäuses 1 angeformt angeordneten Kanälen 18 bzw. 19 ist in diesem Bereichen eine hohe Quersteifigkeit erzielt, wobei der mittels eines Gießkernes ausformbare äußere Konturverlauf 12 in einem die Außenwand des Maschinengehäuses 1 aussteifenden Hohlprofil eingebunden ist.Each housing boundary 9 can be the outer boundary of the machine housing 1 form. The housing delimitation 9 is preferably part of an on the outside Machine housing 1 trained channel 18, for example as a Oil return channel 19 is designed. With the in the area of each transverse wall 4 or each Bearing chair 5 integrally formed on the outside of the machine housing 1 arranged channels 18 and 19 is high transverse rigidity in these areas achieved, the outer contour profile 12 in which can be formed by means of a casting core a hollow profile stiffening the outer wall of the machine housing 1 is involved.

Diese vorbeschriebene Gehäusegestaltung kann auch bei einem Maschinengehäuse mit in Reihe angeordneten Zylindern Verwendung finden, um den Kraftfluß weg von einer Hohlkehle zu der Lagerdeckel-Verschraubung zu lenken.This above-described housing design can also be used for one Machine housings with cylinders arranged in series are used to the power flow away from a fillet to the bearing cap screw to steer.

Claims (4)

Gegossenes Maschinengehäuse (1) einer Hubkolbenmaschine, insbesondere Brennkraftmaschine (2), bei dem ein Kurbelwellen-Lagerstuhl (5) in einer zwischen in Maschinenlängsrichtung beabstandeten Zylindern (3) verlaufenden Querwand (4) angeordnet ist, wobei der Lagerstuhl (5) über beiderseits einer Anschlußfläche (6) für einen mittels Verschraubung anordbaren Lagerdeckel (7) in der Querwand (4) ausgebildeten Hohlkehlen (8) mit Gehäusebegrenzungen (9) in Verbindung steht und ferner im Lagerstuhl (5) Gewindebohrungen (10) für die Lagerdeckel-Verschraubung angeordnet sind,
dadurch gekennzeichnet, daß ein im wesentlichen auf Höhe der Lagerstuhl-Gewindebohrungen (10) abschnittsweise bogenförmig einwärts zur benachbarten Gewindebohrung (10) gerichteter äußerer Konturverlauf (12) der mit dem Lagerstuhl (5) einteilig verbundenen Gehäusebegrenzung (9) zwischen dem äußeren Konturverlauf (12) und der benachbarten Gewindebohrung (10) einen - in Maschinenlängsrichtung gesehen - taillierten Querschnittsverlauf (13) im Lagerstuhl (5) bewirkt. Cast machine housing (1) of a reciprocating piston machine, in particular an internal combustion engine (2), in which a crankshaft bearing bracket (5) is arranged in a transverse wall (4) running between cylinders (3) spaced in the longitudinal direction of the machine, wherein the bearing bracket (5) is connected to housing boundaries (9) via housing connections (9) on both sides of a connection surface (6) for a bearing cover (7) which can be arranged by means of screwing, and is also connected threaded holes (10) for the bearing cap screw connection are arranged in the bearing bracket (5),
characterized, that an essentially at the level of the bearing block threaded bores (10) in sections arc-shaped inward towards the adjacent threaded hole (10) outer contour profile (12) of the housing boundary (9) connected in one piece with the bearing block (5) between the outer contour profile (12) and the adjacent threaded bore (10) causes a waisted cross-sectional profile (13) in the bearing bracket (5), as seen in the machine longitudinal direction. Maschinengehäuse nach Anspruch 1 gekennzeichnet durch ein Leichmetall-Maschinengehäuse (1) mit V-förmig angeordneten Zylindern (3) unter einem V-Winkel α = 60° - 120°, wobei eine von der Ecke (14) der Anschlußfläche (6) mit der Hohlkehle (8) unter dem jeweiligen V-Winkel ausgehende Bezugsgerade (15) zur Festlegung einer im Abstand x ≈ D/6 aus D = 0 - D/4 angeordneten Tangente (16) an den bogenförmigen Abschnitt (12) mit dem Radius R ≈ D/3 aus D = D - D/6 dient und mit
Figure 00060001
D" der Durchmesser einer Lagerbohrung (11) im Lagerstuhl (5) gewählt ist. Machine housing according to claim 1 characterized by a light metal machine housing (1) with V-shaped cylinders (3) at a V angle α = 60 ° - 120 °, whereby a reference straight line (15) starting from the corner (14) of the connecting surface (6) with the fillet (8) at the respective V-angle to define a distance x ≈ D / 6 D = 0 - D / 4 arranged tangent (16) to the arcuate section (12) with the radius R ≈ D / 3 D = D - D / 6 serves and With
Figure 00060001
D "the diameter of a bearing bore (11) in the bearing block (5) is selected. Maschinengehäuse nach Anspruch 2, dadurch gekennzeichnet, daß jede Hohlkehle (8) von der Anschlußfläche (6) aus eine Tiefe H ≈ D/15 aus D = 0 - D/10 aufweist und der Hohlkehlen-Radius r ≈ D/15 aus D = 0 - D/10 beträgt, wobei der an die Gehäusebegrenzung (9) innenseitig tangential anschließende Hohlkehlen-Radius (r) über eine tangential anschließende Schräge (17) mit der Ecke (14) der Anschlußfläche (6) in Verbindung steht. Machine housing according to claim 2, characterized in that each fillet (8) from the connection surface (6) from a depth H ≈ D / 15 D = 0 - D / 10 has and the fillet radius r ≈ D / 15 D = 0 - D / 10 is, where the fillet radius (r) tangentially adjoining the inside of the housing boundary (9) is connected to the corner (14) of the connecting surface (6) via a tangentially adjoining bevel (17). Maschinengehäuse nach den Ansprüchen 1 bis 3,
dadurch gekennzeichnet, daß die Gehäusebegrenzung (9) Teil eines außenseitig am Gehäuse (1) ausgebildeten Kanals (18) ist, insbesondere eines Ölrücklauf-Kanals (19). Machine housing according to claims 1 to 3,
characterized by that the housing boundary (9) is part of a channel (18) formed on the outside of the housing (1), in particular an oil return channel (19).
EP19990118689 1998-10-24 1999-09-22 Cast internal combustion engine block Expired - Lifetime EP0995893B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998149080 DE19849080A1 (en) 1998-10-24 1998-10-24 Cast machine housing of a reciprocating piston engine, in particular an internal combustion engine
DE19849080 1998-10-24

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EP0995893A2 true EP0995893A2 (en) 2000-04-26
EP0995893A3 EP0995893A3 (en) 2001-01-10
EP0995893B1 EP0995893B1 (en) 2009-06-17

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ES (1) ES2325006T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101629530B (en) * 2008-07-16 2013-06-19 通用汽车环球科技运作公司 Engine and method for improved crankcase fatigue strength with fracture-split main bearing caps

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012204481A1 (en) * 2012-03-21 2013-09-26 Bayerische Motoren Werke Aktiengesellschaft Method for increasing strength of cylinder crankcase with bearing bracket for crankshaft, involves introducing radius in transition region from bracket in crankcase sidewall, heating crankcase, and quick quenching the radius as residue

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1268901B (en) * 1964-11-21 1968-05-22 Kloeckner Humboldt Deutz Ag Crankshaft bearing for a reciprocating internal combustion engine
DE2062199A1 (en) * 1970-12-17 1972-07-13 Kloeckner Humboldt Deutz Ag In-line reciprocating piston engine with split crankshaft bearings
US4721077A (en) * 1984-11-28 1988-01-26 Honda Giken Kogyo Kabushiki Kaisha Crankshaft supporting structure for multicylinder internal conbustion engines

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE834624C (en) * 1941-06-03 1952-03-20 Daimler Benz Ag Split plain bearing
DE1922267A1 (en) * 1969-04-29 1970-11-12 Licentia Gmbh Photoelectric measuring device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1268901B (en) * 1964-11-21 1968-05-22 Kloeckner Humboldt Deutz Ag Crankshaft bearing for a reciprocating internal combustion engine
DE2062199A1 (en) * 1970-12-17 1972-07-13 Kloeckner Humboldt Deutz Ag In-line reciprocating piston engine with split crankshaft bearings
US4721077A (en) * 1984-11-28 1988-01-26 Honda Giken Kogyo Kabushiki Kaisha Crankshaft supporting structure for multicylinder internal conbustion engines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101629530B (en) * 2008-07-16 2013-06-19 通用汽车环球科技运作公司 Engine and method for improved crankcase fatigue strength with fracture-split main bearing caps

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DE59915038D1 (en) 2009-07-30
DE19849080A1 (en) 2000-04-27
EP0995893A3 (en) 2001-01-10
EP0995893B1 (en) 2009-06-17
ES2325006T3 (en) 2009-08-21

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