EP0683858B1 - Machine a piston, notamment moteur a combustion interne a piston comportant un bloc-moteur renforce - Google Patents

Machine a piston, notamment moteur a combustion interne a piston comportant un bloc-moteur renforce Download PDF

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Publication number
EP0683858B1
EP0683858B1 EP95904444A EP95904444A EP0683858B1 EP 0683858 B1 EP0683858 B1 EP 0683858B1 EP 95904444 A EP95904444 A EP 95904444A EP 95904444 A EP95904444 A EP 95904444A EP 0683858 B1 EP0683858 B1 EP 0683858B1
Authority
EP
European Patent Office
Prior art keywords
engine
piston
engine block
components
block
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
EP95904444A
Other languages
German (de)
English (en)
Other versions
EP0683858A1 (fr
Inventor
Markus Schwaderlapp
Christian SCHÖNHERR
Thomas Wagner
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.)
FEV Europe GmbH
Original Assignee
FEV Motorentechnik GmbH and Co KG
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 FEV Motorentechnik GmbH and Co KG filed Critical FEV Motorentechnik GmbH and Co KG
Publication of EP0683858A1 publication Critical patent/EP0683858A1/fr
Application granted granted Critical
Publication of EP0683858B1 publication Critical patent/EP0683858B1/fr
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
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • F02F7/008—Sound insulation
    • 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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • F02B77/13—Acoustic insulation
    • 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
    • F02F7/0002—Cylinder arrangements
    • F02F7/0007—Crankcases of engines with cylinders in line
    • 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
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1816—Number of cylinders four
    • 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
    • F02F2200/00—Manufacturing
    • F02F2200/06—Casting
    • 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
    • F02F2200/00—Manufacturing
    • F02F2200/06—Casting
    • F02F2200/08—Casting using a lost model, e.g. foam casting
    • 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
    • F05C2251/00—Material properties
    • F05C2251/04—Thermal properties
    • F05C2251/042—Expansivity

Definitions

  • Piston engines in particular piston internal combustion engines, due to the changing processes in the cylinder space, for example through the combustion process, however also due to mechanical influences on vibrations excited, which is also called sound on the surfaces of the piston engine be emitted in the form of airborne sound and / or about the bearing of the piston machine in the foundation or the vehicle body in vehicles as structure-borne noise to get redirected.
  • the proposal according to DE-A-40 17 139 is also the idea based on the necessary rigidity of the engine block over the effect targeted attachment of ribbons and ribs.
  • This proposal will be done in particular through the connection the crankshaft bearing on the cylinder block and on the crankcase side walls over a variety of reinforcing ribs reached so that the rigidity of the engine block structure is increased overall.
  • this is appropriate Weight increase linked.
  • weight gain is to avoid from an economic point of view.
  • the invention is based on the object, the vibration and Noise development of a piston machine, especially one Piston engine, by designing the engine block structure decrease, taking the total weight if possible may not be increased.
  • this object is achieved with a piston machine, in particular a piston internal combustion engine in which Cylinder, piston, crankshaft and crankshaft bearing in one engine block are arranged, areas on the engine block are provided with cover and / or trough-shaped covers and the walls of the engine block and / or the covers at least in some areas with rib-shaped, reinforcing Components are firmly connected from one of the base material of the engine block and / or the covers Component material consist of a higher modulus of elasticity has than the base material.
  • the special advantage The solution according to the invention is that for the component material Materials can be selected alongside a modulus of elasticity many times higher than that Base material depending on the type of base material used have lower density.
  • the present invention includes, for example, the cylinder head cover, Timing gear covers, the crank or oil pan and similar elements of the engine structure.
  • the covers in the sense of the present invention includes, for example, the cylinder head cover, Timing gear covers, the crank or oil pan and similar elements of the engine structure.
  • the component material ceramic materials in particular oxide ceramic materials intended. These have a much higher modulus of elasticity than the gray cast iron usual as base material or Cast aluminum.
  • the base material is the density of ceramic materials much smaller than the density of the base material.
  • the density is more ceramic Materials roughly the same. Because of these material properties can stiffening components made of ceramic Materials with the same mass about 12 times stiffness compared to an identical design made of gray cast iron. For example, ribs have the same rigidity from a ceramic material about 70% less mass as ribs made of gray cast iron.
  • Another advantage lies in that such a rib-shaped design Components with a given same stiffness due to the higher modulus of elasticity geometric dimensions compared to a rib from the Reduce the base material so that the overall volume of the internal combustion engine is reduced. This allows stiffening measures for noise reduction even with a given production system be effectively introduced into the components.
  • the components are each at least partially are positively embraced by the base material.
  • the reinforcing components by at least partial casting with the base material with this are connected.
  • the particular advantage of overmolding is there in the fact that the base material is already in the casting process the correspondingly held components in the molds, in particular ceramic components, flows around in the fastening area, so that larger dimensional deviations on the part of the ceramic Components can be accepted. That allows such Ceramic components as they come from the firing process, without using any post-processing. There during the cooling phase the base material shrinks more than the ceramic components used become the ceramic components held under compressive stress in the base material. This is particularly advantageous for brittle ceramic material.
  • the reinforcing components via auxiliary materials are firmly connected to the base material.
  • Organic or inorganic materials come as auxiliary materials Consider adhesive or soldering the ceramic Components using metallic or non-metallic Solders, for example glass or enamel solders.
  • the reinforcing components in the area the crankshaft bearing are web-shaped and connect the bearing area to the wall of the engine block.
  • This arrangement is particularly effective because of the here Available space through the crankshaft connected counterweights fixed is.
  • Another increase in the rigidity of the bearing area by connecting the adjacent walls of the engine block is therefore about such web-shaped supports only by using materials with a higher Modulus of elasticity as the base material used, in particular through the use of ceramic materials possible.
  • they are used for structure-borne noise transmission critical vibrations of the crankshaft bearing both in the longitudinal direction of the engine and in the direction of the transverse engine axis and effectively suppresses the motor vertical axis.
  • Fig. 1 is an engine block 1 of a four-cylinder piston internal combustion engine shown, the upper section 2 the Cylinder block forms and its lower section 3 the includes the upper part of the crankcase.
  • the crankcase is on the bottom with a not shown here Enclosed crankcase.
  • the cylinder block 2 and that Crankcase 3 are particularly useful in vehicle engines executed as a component.
  • To reinforce the construction are on the cylinder block 2 as well as on the crankcase 3 extending in the longitudinal direction of the internal combustion engine rib-shaped components 4 attached.
  • This rib-shaped Components 4 consist of a material that is a higher E-module as the base material, preferably made of a ceramic material.
  • the engine block 1 For example, made of gray cast iron, then the Components 4 compared to the base material gray cast iron, for example an approximately three times higher modulus of elasticity and about half Density of the base material.
  • the coefficient of thermal expansion is similar to that of gray cast iron, so that a composite cast iron and ceramics are unproblematic from this point of view is.
  • aluminum is used as the basic material, then own it the components 4, for example when using aluminum oxide ceramic a 5-fold higher modulus of elasticity than the base material with a similar density.
  • Rib-shaped components 4 made of ceramic, as shown in FIG. 1 are indicated with the same stiffness in use of gray cast iron as the base material is 70% lower Mass as ribs made of gray cast iron.
  • Such rib-shaped Components can on the crankcase 3 both on the Arranged outer wall as well as on the inner wall become.
  • the Rigidity of the engine block globally and above all locally especially with respect to the motor vertical axis, so that the Development of vibrations and impedes the amplitude resulting vibrations of the engine block is reduced.
  • an engine block is shown in the the outer wall of the crankcase 3 next to one in Rib-shaped component 4 extending in the longitudinal direction of the motor
  • Rib-shaped component 4 extending in the longitudinal direction of the motor
  • Made of oxide ceramic to stiffen the crankcase wall Ribs 5 and 6 extending in a cross shape to one another are that can also be made of ceramic.
  • Fig. 3 shows a modification of the embodiment according to. Fig. 1.
  • the interruption is preferably in the range the connection points of the bearing walls with the outer walls of the engine block are provided. This will the freely vibrating outer surfaces of the engine block structure downsized and the acoustic behavior of the Engine block structure significantly improved.
  • Such ribs lead to an increased at the interruption points 7 Impedance jump and thus in particular to a reduction the structure-borne noise transmission.
  • the geometry of the break points can, as for example for the area 7.1 shown, wedge-shaped or trapezoidal be or rounded as shown for area 7.2 be trained.
  • This construction with broken short ribs takes into account the special circumstances of the brittle material ceramic.
  • the construction with interrupted Ribs are also used for pure cast constructions advantageous.
  • the support 8 for the main bearing is a rib 10, 11 reinforced bearing wall 9 firmly connected to the engine block and with additional, web-shaped ribs 12, 13, 14 with the wall of the crankcase 3 firmly connected, so that there is additional stiffening here.
  • at least part of the web-shaped Ribs 12, 13 and / or 14 made of a ceramic material consists, preferably those reinforcing ribs, which are arranged perpendicular to the bearing wall 9, either reinforced with ceramic material or completely ceramic material are executed. This will the vibrations critical for structure-borne noise the crankshaft bearing both in the engine longitudinal direction as well as in relation to the motor transverse and motor vertical axis effectively suppressed and the input impedance at the main bearing clearly increased.
  • FIG. 9 shows in the wall of the engine block during manufacture to provide a trough-shaped depression, in which then the rib-shaped component 4 inserted and by gluing, Solder or weld with the appropriate wall area of the engine block is connected.
  • the mold is to be provided in such a way that if possible, the wall thickness in the encapsulation area 18 is essentially constant, so that a "cast-around fold" arises, which the rib-shaped component 4.2 like a "clip stapler” form-fitting surrounds.
  • Such a rib-shaped component 4.2 from one Ceramic material can also be used directly on the model be attached so that the molding sand the ribs outside form-fitting surrounds.
  • the undercuts can be done here through an easily evaporable material, e.g. B. by wax, must be filled in to prevent sand from entering.
  • such ceramic components also in sand cores or metal molds (die casting, die casting) to get integrated.
  • the rib-shaped ones are Components 4 directly into the positive from foam used.
  • the cross section acc. Fig. 7 shows a rib-shaped reinforcement 19, in which a ceramic component 4 of the cast material is completely enclosed.
  • the complete enclosure is not over the entire length in this embodiment provided that the component 4 to be cast from ceramic Material at least in its end areas in the form must be fixed.
  • Oxide-ceramic can be used as ceramic materials for the components Materials, especially mixed ceramics or dispersion ceramics based on, for example, aluminum oxide, Silicon oxide or zirconium oxide and / or mixtures of which can be used.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

L'invention concerne une machine à piston, notamment un moteur à combustion interne à piston qui présente un bloc-moteur (1) regroupant cylindres, pistons, vilebrequin et paliers de vilebrequin. Le bloc-moteur comporte des zones pourvues d'éléments de recouvrement se présentant sous forme de chapeaux et/ou de coupelles. Les parois du bloc-cylindres (2) et/ou des éléments de recouvrement sont solidarisées, au moins dans des zones partielles, avec des éléments renforçateurs (4) réalisés dans un matériau différent du matériau de base du bloc-moteur (1) et/ou de celui des éléments de recouvrement et présentant un module d'élasticité supérieur à celui du matériau de base.

Claims (6)

  1. Machine à piston, en particulier moteur à combustion interne à piston, dans laquelle sont agencés, dans un bloc-moteur (1), un cylindre, un piston, un vilebrequin et un logement de vilebrequin, des zones du bloc-moteur étant munies d'éléments de recouvrement en forme de couvercle et/ou en forme de carter, et dans laquelle les parois du bloc-cylindres (2) et/ou des éléments de recouvrement sont reliées rigidement, au moins dans des zones partielles, à des pièces de renfort (4 ; 12, 13, 14) en forme de nervures, qui se composent d'un matériau qui diffère du matériau de base du bloc-moteur (1) et/ou des éléments de recouvrement et qui présente un module d'élasticité plus élevé que le matériau de base.
  2. Machine à piston selon la revendication 1, caractérisée en ce que le matériau des pièces de renfort se compose d'un matériau céramique.
  3. Machine à piston selon la revendication 1 ou 2, caractérisée en ce que les pièces de renfort (4 ; 12, 13, 14) sont entourées chacune, au moins en partie et avec concordance de forme, par le matériau de base.
  4. Machine à piston selon l'une des revendications 1 à 3, caractérisée en ce que les pièces de renfort situées dans la zone du logement de vilebrequin (8) sont conçues comme des nervures en forme d'entretoise (12, 13, 14) et relient la zone de logement à la paroi du bloc-moteur (1) ou du carter de vilebrequin (3).
  5. Machine à piston selon l'une des revendications 1 à 4, caractérisée en ce que les pièces de renfort (4 ; 12, 13, 14) sont fixées au matériau de base en les entourant au moins partiellement, par coulée du matériau de base.
  6. Machine à piston selon l'une des revendications 1 à 4, caractérisée en ce que les pièces de renfort (4 ; 12, 13, 14) sont fixées rigidement au matériau de base grâce à des matériaux auxiliaires.
EP95904444A 1993-12-11 1994-12-09 Machine a piston, notamment moteur a combustion interne a piston comportant un bloc-moteur renforce Expired - Lifetime EP0683858B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9319054U 1993-12-11
DE9319054U DE9319054U1 (de) 1993-12-11 1993-12-11 Kolbenmaschine, insbesondere Kolbenbrennkraftmaschine mit versteiftem Motorblock
PCT/EP1994/004099 WO1995016121A1 (fr) 1993-12-11 1994-12-09 Machine a piston, notamment moteur a combustion interne a piston comportant un bloc-moteur renforce

Publications (2)

Publication Number Publication Date
EP0683858A1 EP0683858A1 (fr) 1995-11-29
EP0683858B1 true EP0683858B1 (fr) 1999-03-03

Family

ID=6901876

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95904444A Expired - Lifetime EP0683858B1 (fr) 1993-12-11 1994-12-09 Machine a piston, notamment moteur a combustion interne a piston comportant un bloc-moteur renforce

Country Status (4)

Country Link
US (1) US5676105A (fr)
EP (1) EP0683858B1 (fr)
DE (2) DE9319054U1 (fr)
WO (1) WO1995016121A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6076971A (en) * 1997-07-01 2000-06-20 Cummins Engine Company, Inc. Engine block bearing saddle reinforcing inserts
FR2901208B1 (fr) * 2006-05-16 2009-01-09 Renault Sas Cache-style moteur
KR100802934B1 (ko) 2006-08-14 2008-02-14 현대자동차주식회사 실린더 블록의 보강구조
US7814879B2 (en) * 2008-04-23 2010-10-19 Techtronic Outdoor Products Technology Limited Monolithic block and valve train for a four-stroke engine
RU2472510C2 (ru) * 2008-06-06 2013-01-20 Гленмарк Фармасьютикалс Лимитед Стабильная лекарственная форма для местного применения, содержащая вориконазол
JP5502441B2 (ja) * 2009-12-03 2014-05-28 株式会社マーレ フィルターシステムズ オイルパン
DE102017208792A1 (de) 2017-05-24 2018-11-29 Bayerische Motoren Werke Aktiengesellschaft Hubkolbenmaschine, Verfahren zum Betreiben der Hubkolbenmaschine und Verfahren zur Herstellung einer Anordnung von Zylindergehäusen
US10876496B2 (en) * 2019-05-17 2020-12-29 GM Global Technology Operations LLC Apparatus and method to avoid fretting fatigue in an engine block

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Publication number Priority date Publication date Assignee Title
US3817354A (en) * 1972-06-01 1974-06-18 Gear Co M W Oil pan for tractors
JPS5823492B2 (ja) * 1977-11-17 1983-05-16 日産自動車株式会社 自動車用低騒音エンジン
AT375444B (de) * 1977-12-07 1984-08-10 Steyr Daimler Puch Ag Hubkolben-brennkraftmaschine
JPS593180Y2 (ja) * 1980-11-26 1984-01-28 日産自動車株式会社 内燃機関のシリンダブロツク
JPH0217212Y2 (fr) * 1981-01-19 1990-05-14
JPS57179355A (en) * 1981-04-28 1982-11-04 Nissan Motor Co Ltd Cylinder block
DE3276768D1 (en) * 1981-05-06 1987-08-20 Nissan Motor Internal combustion engine with bearing beam structure
DE3273107D1 (en) * 1981-05-20 1986-10-16 Nissan Motor Internal combustion engine with bearing beam structure
JPS5840538U (ja) * 1981-09-09 1983-03-17 日産自動車株式会社 シリンダブロツク
IT1182082B (it) * 1984-12-13 1987-09-30 Honda Motor Co Ltd Struttura di blocco clindri per motore a combustione interna a piu' cilindri
DE4017139C2 (de) * 1990-05-28 1999-04-15 Deutz Ag Brennkraftmaschine
US5107809A (en) * 1991-05-28 1992-04-28 Kia Motors Corporation Engine block and bearing assembly
US5218938A (en) * 1992-11-02 1993-06-15 General Motors Corporation Structural oil pan for internal combustion engine
KR100285438B1 (ko) * 1993-11-01 2001-04-02 정몽규 내연기관

Also Published As

Publication number Publication date
US5676105A (en) 1997-10-14
DE9319054U1 (de) 1995-04-13
EP0683858A1 (fr) 1995-11-29
DE59407884D1 (de) 1999-04-08
WO1995016121A1 (fr) 1995-06-15

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