EP0240120A2 - Brennkraftmaschine - Google Patents

Brennkraftmaschine Download PDF

Info

Publication number
EP0240120A2
EP0240120A2 EP87301382A EP87301382A EP0240120A2 EP 0240120 A2 EP0240120 A2 EP 0240120A2 EP 87301382 A EP87301382 A EP 87301382A EP 87301382 A EP87301382 A EP 87301382A EP 0240120 A2 EP0240120 A2 EP 0240120A2
Authority
EP
European Patent Office
Prior art keywords
head
internal combustion
combustion engine
passageways
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.)
Withdrawn
Application number
EP87301382A
Other languages
English (en)
French (fr)
Other versions
EP0240120A3 (en
Inventor
Frederick Stanley Johnson
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.)
Rover Co Ltd
Original Assignee
Rover Co Ltd
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 Rover Co Ltd filed Critical Rover Co Ltd
Publication of EP0240120A2 publication Critical patent/EP0240120A2/de
Publication of EP0240120A3 publication Critical patent/EP0240120A3/en
Withdrawn legal-status Critical Current

Links

Images

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
    • F02F7/0002—Cylinder arrangements
    • F02F7/0007—Crankcases of engines with cylinders in line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02—Arrangements of lubricant conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • 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
    • 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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/18—DOHC [Double overhead camshaft]
    • 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
    • F02B75/20—Multi-cylinder engines with cylinders all in one line

Definitions

  • This invention relates to internal combustion engines.
  • the invention provides an internal combustion engine having tensile members for securing the cylinder head to the cylinder block, the tensile members extending to and being secured to retaining means for the crankshaft bearings, and having passageways extending through the block surrounding each tensile member, the passageways communicating both with the valve gear region of the cylinder head and with the crankcase region of the engine.
  • the passageways permit crankcase ventilation and, in a suitable engine orientation, permit lubricating oil to return from the valve gear cover to the sump.
  • the diameter of the passageways at the head/block interface is at least twice the diameter of the tensile members: the reduced contact area between the head and the block increases the pressure at the interface and hence the sealing ability between the head and the block.
  • each passageway is surrounded at the head/block interface by a wall which extends around a part of the periphery of a cylinder.
  • the walls of passageways between cylinders extend around part of the periphery of each cylinder.
  • the engine comprises a cylinder head indicated generally by the reference numeral 1, a block formed integrally with the upper part of the crankcase indicated generally by the reference numberal 2, the lower part of the crankcase indicated generally by the reference numeral 3, and a retaining member 4.
  • Valve gear (not shown) operated by twin overhead camshafts 5 and 6 is provided.
  • a valve gear cover (not shown) is provided.
  • the block is designed to receive wet cylinder liners (not shown).
  • the head and sections 2, 3, 4 of the engine are made of aluminium.
  • the lower part of the crankcase 3 is formed integrally with the main bearing caps 9 and is secured to the upper parts by bolts 10 and 11.
  • the two parts of the crankcase are split about a plane perpendicular to the cylinder axes and passing through the centre of the crankshaft.
  • the bearing caps house the usual bearing bushes 12 forming the main bearing for the crankshaft 13.
  • the retaining member 4 is secured to the lower part of the crankcase 3 by means of bolts 14, 15.
  • the heads of tensile members in the form of steel bolts 16, 17 attach the cylinder head 1 to the block 2, and the other end of the tensile members are in threaded engagement with the retaining member 4.
  • the integral block and upper part of the crankcase 2 has a passageway 18, 19 surrounding each tensile member 16, 17.
  • the passageways are tapered to facilitate their manufacture and, at the block/head interface are wide.
  • slots 20, 21 connect the passageways with the crankcase region beneath the cylinders (not shown) and (via slots 22, 23) above the sump 24.
  • the passageways 18, 19 connect with corresponding tapered passageways 25, 26 in the head. Via openings 27, 28, these passsageways communicate with the valve gear region of the head.
  • the passageways 18, 19 each provide for crankcase ventilation of the volume beneath the pistons (which can be forced ventilation using the induction tract depression) from the crankcase to the valve gear region of the head, and also for the return of lubricating oil from the valve gear cover to the sump 24. Additional drain and breathing passages are also provided at one end of the cylinder block.
  • the passageways 18, 19 are defined at the head/block interface by walls 29, 30 which engage with corresponding walls 31, 32 in the head surrounding the passageways 25, 26. Two sections out of the five sections of each of the walls 29, 30, 31, 32 extend around the top of the cylinder itself.
  • the diameter of the passageways 18, 19, 25, 26 at the head/block interface is at least twice the diameter of the tensile members 16, 17.
  • a large cooling channel 33 runs along one side of the block.
  • Water is fed into the channel 33 from the left hand end as seen in Figure 2 and flows (a) down the block through passages 34a, 35a, 36a, 37a, around the respective cylinder liners and up through the passages 34b, 35b, 36b, 37b and (b) through breaks in the head/block gasket 38, up through passages 39a; 40a, 41a, 42a in the head and down through passages 39b, 40a, 41b, 42b.
  • the contact areas between the head and the block are reduced because of the large area of the passageways, assisting the proper sealing of the block and head.
  • the arrangement of the invention does not rely on shear forces from the boss through the adjoining material for transmitting the load to the cylinder periphery. Because of the use of the tensile members secured to the retaining member, the block and head are compressively loaded, and the forces are fed along the walls of the tapered passageways to the cylinder peripheries.
  • the main bearings are lubricated by oil fed along gallery 4a and a series of drillings 3a.
  • the gallery 4a is supplied by a drilling into the gallery from the oil filter (not shown).
  • the part 1, 2, 3, 4 are all designed to be die cast, and the tapering of the passageways 18, 19 and 25, 26 assists in this regard. Apertures 43, which connect the spaces under the piston to relieve the internal pumping pressure to reduce pumping losses, may be produced using sliders.
  • Parts 2, 3, 4 may be high pressure die cast, gravity die cast, or cast using low pressure sand casting.
  • Part 1 may be gravity die cast or low pressure sand cast. Nevertheless, the parts could be cast in the conventional way using sand cores if desired or in any other suitable way. While parts 1 to 4 are described as being made of aluminium, the parts could be made of other materials and parts 2 - 4 in particular could be made of polymer.
  • the threaded portions in the member 4 may if desired be formed by inserts in the member 4 to provide greater strength at the threads.
  • the invention is applicable to other numbers of in-line cylinders apart from four, and is also applicable to opposed-piston configurations, V-configurations and to diesel engines. Obviously, in other engine configurations or orientations from that described, the oil might not necessarily drain down each passageway 18, 19 eg. in a slant in-line engine configuration, oil will preferentially drain down one row of passageways rather than the other row.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
EP87301382A 1986-03-15 1987-02-18 Internal combustion engine Withdrawn EP0240120A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8606449 1986-03-15
GB8606449A GB2187791B (en) 1986-03-15 1986-03-15 Internal combustion engine

Publications (2)

Publication Number Publication Date
EP0240120A2 true EP0240120A2 (de) 1987-10-07
EP0240120A3 EP0240120A3 (en) 1988-10-05

Family

ID=10594689

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87301382A Withdrawn EP0240120A3 (en) 1986-03-15 1987-02-18 Internal combustion engine

Country Status (2)

Country Link
EP (1) EP0240120A3 (de)
GB (1) GB2187791B (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187791B (en) * 1986-03-15 1989-11-15 Austin Rover Group Internal combustion engine
DE4230528A1 (de) * 1992-09-12 1994-03-17 Opel Adam Ag Brennkraftmaschine
EP0668440A1 (de) * 1994-02-18 1995-08-23 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Brennkraftmaschine
US5452692A (en) * 1993-08-27 1995-09-26 Rover Group Limited Internal combusting engine
FR2757898A1 (fr) * 1996-12-27 1998-07-03 Daimler Benz Ag Moteur a combustion interne multicylindre a refroidissement par liquide
EP0918143A1 (de) * 1997-11-24 1999-05-26 Ford Global Technologies, Inc. Brennkraftmaschine
EP1321635A1 (de) * 2001-12-21 2003-06-25 Ford Global Technologies, Inc. Oelruckführungsleitung in einer Brennkraftmaschine
EP1321638A1 (de) * 2001-12-21 2003-06-25 Ford Global Technologies, Inc. Kurbelwellengehäuseentlüftungssystem für eine Brennkraftmaschine
DE19608018B4 (de) * 1995-03-10 2006-12-14 Volkswagen Ag Gehäuse für eine Hubkolben-Brennkraftmaschine
DE102007008281A1 (de) 2007-02-20 2008-08-21 Volkswagen Ag Hubkolbenbrennkraftmaschine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2258011B (en) * 1991-07-24 1994-09-14 Rover Group A method of assembling an internal combustion engine
DE4240464A1 (de) * 1992-12-02 1994-06-09 Opel Adam Ag Zylinderkurbelgehäuse für eine Brennkraftmaschine mit darin angeordneten Be- und Entlüftungskanälen
JP3389801B2 (ja) * 1996-11-29 2003-03-24 スズキ株式会社 エンジンのブローバイガス還元構造
DE102006038831B4 (de) * 2006-08-18 2018-03-15 Volkswagen Ag Brennkraftmaschine mit Rückführung von Blow-By-Gasen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB281486A (en) * 1926-12-24 1927-12-08 Frederick Henry Royce Improvements in cylinders of internal combustion engines
US1969690A (en) * 1933-09-11 1934-08-07 Gen Motors Corp Lubricating arrangement
FR2183394A5 (de) * 1972-05-05 1973-12-14 Peugeot & Renault
IT984187B (it) * 1972-05-05 1974-11-20 Renault Struttura di motore a combustio ne interna
DE3110274A1 (de) * 1981-03-17 1982-09-30 Volkswagenwerk Ag, 3180 Wolfsburg "brennkraftmaschine mit motorblock, zylinderkopf und kurbelwellen-lagerdeckel, die durch gemeinsame gewindestangen-anordnungen verbunden sind"
JPS58152922A (ja) * 1982-03-04 1983-09-10 Nissan Motor Co Ltd 自動車用エンジンのベアリングビ−ム
US4644911A (en) * 1983-10-07 1987-02-24 Honda Giken Kogyo Kabushiki Kaisha Cylinder block for internal combustion engine
GB2187791B (en) * 1986-03-15 1989-11-15 Austin Rover Group Internal combustion engine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187791B (en) * 1986-03-15 1989-11-15 Austin Rover Group Internal combustion engine
DE4230528A1 (de) * 1992-09-12 1994-03-17 Opel Adam Ag Brennkraftmaschine
US5452692A (en) * 1993-08-27 1995-09-26 Rover Group Limited Internal combusting engine
EP0668440A1 (de) * 1994-02-18 1995-08-23 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Brennkraftmaschine
DE4405188A1 (de) * 1994-02-18 1995-08-24 Porsche Ag Brennkraftmaschine
US5579729A (en) * 1994-02-18 1996-12-03 Dr. Ing. H.C.F. Porsche Ag Internal combustion engine
DE19608018B4 (de) * 1995-03-10 2006-12-14 Volkswagen Ag Gehäuse für eine Hubkolben-Brennkraftmaschine
FR2757898A1 (fr) * 1996-12-27 1998-07-03 Daimler Benz Ag Moteur a combustion interne multicylindre a refroidissement par liquide
EP0918143A1 (de) * 1997-11-24 1999-05-26 Ford Global Technologies, Inc. Brennkraftmaschine
EP1321635A1 (de) * 2001-12-21 2003-06-25 Ford Global Technologies, Inc. Oelruckführungsleitung in einer Brennkraftmaschine
EP1321638A1 (de) * 2001-12-21 2003-06-25 Ford Global Technologies, Inc. Kurbelwellengehäuseentlüftungssystem für eine Brennkraftmaschine
DE102007008281A1 (de) 2007-02-20 2008-08-21 Volkswagen Ag Hubkolbenbrennkraftmaschine

Also Published As

Publication number Publication date
EP0240120A3 (en) 1988-10-05
GB2187791A (en) 1987-09-16
GB2187791B (en) 1989-11-15
GB8606449D0 (en) 1986-04-23

Similar Documents

Publication Publication Date Title
EP0240120A2 (de) Brennkraftmaschine
US4823747A (en) Cylinder head camshaft mounting arrangement
US4721077A (en) Crankshaft supporting structure for multicylinder internal conbustion engines
US4945864A (en) Two cycle engine piston lubrication
EP0204048B1 (de) Kurbelwellenlagerungs- und -schmierungsstruktur in einer Mehrzylinder-Brennkraftmaschine
US5887565A (en) Lubricating oil passage structure for engine
US20130213339A1 (en) Internal combustion engine with light metal alloy engine block and cast iron cylinder liners
US4630579A (en) Internal combustion engine
US7096843B2 (en) Multicylinder four-cycle combustion engine
US5579729A (en) Internal combustion engine
CA2299057C (en) Oil passage arrangement in a piston
JP2005351261A (ja) 内燃機関
EP0886060B1 (de) Motorzylinderblock
JP2007120506A (ja) 多気筒エンジン
US7331276B2 (en) Piston for a two-cycle engine
GB2172061A (en) A crankshaft supporting structure
JPH0618010Y2 (ja) 多気筒内燃機関におけるシリンダブロツク
US20050217628A1 (en) Cylinder block for engine
JP2021055585A (ja) 多気筒内燃機関の本体ブロック
CN1135296C (zh) 内燃机及其制造方法
EP1321635A1 (de) Oelruckführungsleitung in einer Brennkraftmaschine
JPS63138114A (ja) 水冷式排気マニフオ−ルド付きｖ形エンジン
JPH087068Y2 (ja) エンジンのシリンダブロック
JPH0618007Y2 (ja) エンジンの潤滑油通路の構造
EP0926331A2 (de) Zylinderblockaufbau

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19880218

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

RHK1 Main classification (correction)

Ipc: F01M 11/02

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19881122

RIN1 Information on inventor provided before grant (corrected)

Inventor name: JOHNSON, FREDERICK STANLEY