EP0376901A1 - An internal combustion engine, particularly for motor vehicles - Google Patents

An internal combustion engine, particularly for motor vehicles Download PDF

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Publication number
EP0376901A1
EP0376901A1 EP89830554A EP89830554A EP0376901A1 EP 0376901 A1 EP0376901 A1 EP 0376901A1 EP 89830554 A EP89830554 A EP 89830554A EP 89830554 A EP89830554 A EP 89830554A EP 0376901 A1 EP0376901 A1 EP 0376901A1
Authority
EP
European Patent Office
Prior art keywords
driving shaft
internal combustion
combustion engine
shaft
auxiliary
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Withdrawn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
EP89830554A
Other languages
German (de)
English (en)
French (fr)
Inventor
Eppo Ricordi
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.)
Fiat Auto SpA
Original Assignee
Fiat Auto SpA
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 Fiat Auto SpA filed Critical Fiat Auto SpA
Publication of EP0376901A1 publication Critical patent/EP0376901A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • 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
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps

Definitions

  • the present invention relates to an internal combustion engine, particularly for motor vehicles, of the type comprising a driving shaft which is rotatable in main bearings, and an oil pump and a pulley for driving auxiliary equipment, which are rotated by one end of the driving shaft.
  • the object of the present invention is to produce an engine of the type defined above, in which the operation of the oil pump and the pulley for driving the auxiliary equipment by the driving shaft is free of orbital rotation.
  • this object is achieved by virtue of the fact that the end of the driving shaft is hollow, and that an auxiliary shaft coaxial with the driving shaft is coupled torsionally within the hollow end thereof, in axial correspondence with the respective main bearing, and rotates the pump and the pulley.
  • the auxiliary shaft can be coupled directly within the hollow end of the driving shaft or, more conveniently, by means of an intermediate sleeve which is in turn fixed torsionally to the hollow end of the driving shaft.
  • a four-cylinder internal combustion engine according to the invention is generally indicated 1.
  • the engine 1 is constituted essentially by a cylinder block 2 formed integrally with the cylinders 3, their combustion chambers 4, their intake ducts 5 and exhaust ducts 6, the seats 7 for the inlet and exhaust valves 8 and for any spark plugs, not illustrated, a sump structure 9 fitted beneath the cylinder block 2, and a timing control assembly 10 fitted on top of the cylinder block 2 and including a camshaft 22.
  • connection of cylinder block 2 to the sump 9 on the one hand and to the timing control assembly 10 on the other is effected in correspondence with integral flanges 2a, 2b formed in single planes and in one piece with the cylinder block 2 and coupled to corresponding continuous integral flanges 9a, 10a formed in single planes on the sump 9 and the timing control assembly 10 respectively.
  • the sump 9 is constituted by a structural body for supporting the crankshaft 11 of the engine.
  • the sump 9 is formed with integral main bearings 12 for supporting the shaft 11 for rotation by means of main bearing caps 13 and bearings 14.
  • One of the end walls of the sump 2 has an aperture 15 which is coaxial with the crankshaft 11 and is defined by an annular flange 16 constituting an integral seat for an oil pump, generally indicated 17, whose impeller is indicated 18.
  • the end of the cranksahft 11, indicated 11a that is, the end supported by the main bearing 12 which faces the aperture 15, is hollow and is coupled coaxially to an auxiliary shaft 19 to which the impeller 18 of the oil pump 17 is keyed.
  • the torsional coupling between the auxiliary shaft 19 and the hollow end 11a of the crankshaft 11 may be direct or, as in the embodiment illustrated, may be achieved by means of an intermediate sleeve 20 whose outer surface is driven into the hollow end 11a and whose inner surface is splined for the engagement of a corresponding splined end portion 19a of the auxiliary shaft 19.
  • the shaft 19 extends out of the sump 9 through the aperture 15 and also drives a pulley 21 for rotating auxiliary equipment of the engine 1.
  • the auxiliary shaft 19 is coupled to the crankshaft 11 in axial correspondence with the end main bearing 12, which ensures that the alignment of the auxiliary shaft 19 with the crankshaft 11 is kept constant in use and avoids orbital rotation of the pump 17 and the pulley 21.
  • the camshaft 22 of the timing control assembly 10 is driven by means of a belt or chain 23 driven by a driving sprocket 24 fixed frontally and directly to the end 11a of the crankshaft 11 by means of screws 25 which are engaged in slots for enabling the angular adjustment of the timing of the engine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP89830554A 1988-12-30 1989-12-19 An internal combustion engine, particularly for motor vehicles Withdrawn EP0376901A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT6817988 1988-12-30
IT68179/88A IT1224053B (it) 1988-12-30 1988-12-30 Motore a combustione interna particolarmente per autoveicoli

Publications (1)

Publication Number Publication Date
EP0376901A1 true EP0376901A1 (en) 1990-07-04

Family

ID=11308361

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89830554A Withdrawn EP0376901A1 (en) 1988-12-30 1989-12-19 An internal combustion engine, particularly for motor vehicles

Country Status (3)

Country Link
EP (1) EP0376901A1 (it)
BR (1) BR8906872A (it)
IT (1) IT1224053B (it)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992015773A1 (en) * 1991-03-05 1992-09-17 Saab Automobile Aktiebolag Hydraulic pump for a vehicle engine
EP0984143A3 (en) * 1998-09-03 2001-01-10 Concentric Pumps Limited Improvements to rotary pumps
EP2507496A1 (de) * 2009-12-03 2012-10-10 AVL List GmbH Brennkraftmaschine mit einem zylinderkopf und einem zylinderblock

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1352410A (fr) * 1963-03-28 1964-02-14 Auto Union Gmbh Bloc comprenant une pompe à huile de graissage et une pompe à eau de refroidissement
FR2075753A5 (it) * 1970-01-30 1971-10-08 Alfieri Maserati Officin
US3879154A (en) * 1967-10-23 1975-04-22 Improved Mech Prod Pty Ltd Gear type fluid motor or pump having fluid pressure compensating means
GB2019505A (en) * 1978-04-21 1979-10-31 Bbc Brown Boveri & Cie Lubricating Piston Type Machine
GB2047349A (en) * 1979-04-12 1980-11-26 Gilardini Spa Rotary Pumps
DE3142458A1 (de) * 1980-11-27 1982-06-09 List Hans Brennkraftmaschine
DE3506928A1 (de) * 1985-02-27 1986-08-28 Schwäbische Hüttenwerke GmbH, 7080 Aalen Innenzahnradpumpe als schmieroelpumpe fuer einen verbrennungsmotor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1352410A (fr) * 1963-03-28 1964-02-14 Auto Union Gmbh Bloc comprenant une pompe à huile de graissage et une pompe à eau de refroidissement
US3879154A (en) * 1967-10-23 1975-04-22 Improved Mech Prod Pty Ltd Gear type fluid motor or pump having fluid pressure compensating means
FR2075753A5 (it) * 1970-01-30 1971-10-08 Alfieri Maserati Officin
GB2019505A (en) * 1978-04-21 1979-10-31 Bbc Brown Boveri & Cie Lubricating Piston Type Machine
GB2047349A (en) * 1979-04-12 1980-11-26 Gilardini Spa Rotary Pumps
DE3142458A1 (de) * 1980-11-27 1982-06-09 List Hans Brennkraftmaschine
DE3506928A1 (de) * 1985-02-27 1986-08-28 Schwäbische Hüttenwerke GmbH, 7080 Aalen Innenzahnradpumpe als schmieroelpumpe fuer einen verbrennungsmotor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992015773A1 (en) * 1991-03-05 1992-09-17 Saab Automobile Aktiebolag Hydraulic pump for a vehicle engine
US5314319A (en) * 1991-03-05 1994-05-24 Saab Automobile Aktiebolag Hydraulic pump for a vehicle engine
EP0984143A3 (en) * 1998-09-03 2001-01-10 Concentric Pumps Limited Improvements to rotary pumps
EP2507496A1 (de) * 2009-12-03 2012-10-10 AVL List GmbH Brennkraftmaschine mit einem zylinderkopf und einem zylinderblock

Also Published As

Publication number Publication date
BR8906872A (pt) 1990-09-25
IT1224053B (it) 1990-09-26
IT8868179A0 (it) 1988-12-30

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

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Effective date: 19900711

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