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EP0169209A1 - Moteur a combustion interne - Google Patents

Moteur a combustion interne

Info

Publication number
EP0169209A1
EP0169209A1 EP19840902571 EP84902571A EP0169209A1 EP 0169209 A1 EP0169209 A1 EP 0169209A1 EP 19840902571 EP19840902571 EP 19840902571 EP 84902571 A EP84902571 A EP 84902571A EP 0169209 A1 EP0169209 A1 EP 0169209A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
transfer
crankshaft
engine
fuel mixture
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Withdrawn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
EP19840902571
Other languages
German (de)
English (en)
Inventor
James Lenaham
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0169209A1 publication Critical patent/EP0169209A1/fr
Withdrawn legal-status Critical Current

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
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/02—Engines with reciprocating-piston pumps; Engines with crankcase pumps
    • F02B33/06—Engines with reciprocating-piston pumps; Engines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps
    • F02B33/22—Engines with reciprocating-piston pumps; Engines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps with pumping cylinder situated at side of working cylinder, e.g. the cylinders being parallel
    • 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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Definitions

  • This invention relates to improvements in internal combustion engines.
  • the present invention resides in a two-cylinder internal combustion engine including: a crankcase having a crankshaft rotatably mounted therein and fitted with a cylinder head assembly; a first (or “pumping") cylinder and a second
  • the first cylinder may have a greater capacity than the second cylinder to "supercharge" the air/fuel mixture entering the second cylinder.
  • the transfer port may be closed at each end by respective transfer valves, where the transfer valve adjacent the first cylinder may close before the valve adjacent the second cylinder.
  • the present invention resides in a multi-cylinder engine having two or more pairs of cylinders as hereinbefore described.
  • FIG. 1 is a sectional side view of a first embodiment, being a two-cylinder engine
  • FIGS. 2 to 6 are schematic views showing the relative positions of the pistons and valves as the crankshaft completes one revolution
  • FIG. 7 is a schematic side view of an eight cylinder engine, having four pairs of cylinders.
  • the engine 10 is of the overhead cam shaft type having an engine block with a crankcase 11 supporting a crankshaft 12, with aligned crankpins 13, in suitable bearings 14.
  • a flywheel 15 is mounted on one end of the crankshaft 12, while a cambelt pulley 16 and crankpulley 17 are mounted at the other end of the crankshaft.
  • a pair of cylidners 18, 19 are provided in the engine block and each is provided with a piston 20, 21 connected to respective crankpins 13 by connecting rods 22. As can be clearly seen, the pistons move up and down in the cylinders in unison as the crankshaft 12 is rotated.
  • a cylinder head assembly 23 is mounted on top of the engine block to close the cylinders 18, 19.
  • a camshaft 24 is mounted in bearings 25 in the head assembly and is driven by a cam belt 26 via a pulley 27, the cam belt being tensioned by an idler pulley 28.
  • the cam shaft operates to open and close a pair of valves in each cylinder 18, 19, via cam followers 29 and valve springs 30.
  • An intake port 31 in the head assembly 23 is connected at one end to an intake manifold (not shown) provided with a carburettor or fuel injection unit (not shown) which provides an air/fuel mixture to be burnt in the engine.
  • An intake valve 32 controlled by the camshaft 24, selectively allows the mixture to enter the first cylinder 18.
  • An exhaust port 33 is connected at one end to an exhaust manifold (not shown).
  • An exhaust valve 34 also controlled by the camshaft 24, selectively allows the exhaust gases to be expelled from the second cylinder 19.
  • a transfer port 35 interconnects the two cylinders, the port being selectively closed by first and second transfer valves 36, 37 controlled by the camshaft 24.
  • intake valve 32 opens the intake port 31 to enable the air/fuel mixture to be drawn into the cylinder as the piston moves towards bottom dead centre (BDC). Transfer valve 36 remains closed.
  • BDC bottom dead centre
  • the intake valve closes.
  • the transfer valves 36, 37 open to allow the non compressed mixture to be transferred to the second cylinder 19 via transfer port 35.
  • the transfer valves 36, 37 close, with valve 36 closing just before valve 37.
  • an eight cylinder engine has four pairs of cylinders 18, 19 indicated by pairs 1-4.
  • Each pair of cylinders has pistons 18, 19 connected by connecting rods 12 to a crankshaft 12a, supported in bearings 14, in the manner hereinbefore described.
  • the crankshaft has four pairs of aligned crankpins 13 where the crankpins 13 for one pair of cylinders are offset 90° from the crankpins 13 of the preceding and succeeding pairs of cylinders. Therefore, each pair of cylinders will compress and fire the air/ fuel mixture (in the manner hereinbefore described) for every revolution of the crankshaft and the overlapping firing strokes of the second cylinders 19 will ensure a smooth delivery of power.
  • the cylinder pairs operate in the order 1, 3, 4, 2 but this may be changed to e.g. 1, 2, 3, 4 if preferred.
  • the invention can also be applied to "Diesel” engines, where a fuel injection nozzle replaces the sparkplug 38 in the second cylinder 19.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

Un moteur à combustion interne (10) possède un vilebrequin (12) avec des manetons alignés (13) qui sont reliés aux pistons (20, 21) dans des cylindres respectifs (18, 19). Une soupape d'admission (32) assure la communication entre une lumière d'admission (31) et le cylindre "de pompage" (18) et une soupape d'échappement (34) fait communiquer le cylindre "de puissance" (19) avec la lumière d'échappement (33). Une lumière de transfert (35), commandée par des soupapes de transfert (36, 37) met en communication les deux cylindres (18, 19). A chaque tour du vilebrequin (12), le mélanger air/combustible est comprimé dans le cylindre "de pompage" (18) et est transféré au cylindre "de puissance" (19), via la lumière de transfert (35), pour l'allumage au moyen de la bougie (38) lors de la course de puissance du cylindre de puissance (19) lors du tour suivant du vilebrequin (12).
EP19840902571 1983-12-13 1984-06-26 Moteur a combustion interne Withdrawn EP0169209A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU283083 1983-12-13
AU2830/83 1983-12-13

Publications (1)

Publication Number Publication Date
EP0169209A1 true EP0169209A1 (fr) 1986-01-29

Family

ID=3693325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840902571 Withdrawn EP0169209A1 (fr) 1983-12-13 1984-06-26 Moteur a combustion interne

Country Status (2)

Country Link
EP (1) EP0169209A1 (fr)
WO (1) WO1985002655A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2194196A1 (fr) * 1996-12-31 1998-06-30 Douglas Ayres Moteur a combustion interne utilisant un procede d'injection integrale de melange carbure
ES2163970B1 (es) * 1998-03-24 2003-02-16 Toro Aguilera Antonio Del Motor de explosion de ciclo asistido.
DE102008014249A1 (de) * 2008-03-13 2009-09-24 Man Diesel Se Verfahren für den Verbrennungsgaswechsel (Spülung) in einer Zweitakt-Brennkraftmaschine

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE320397C (de) * 1914-01-20 1920-04-16 Louis Renault Zweitaktverbrennungskraftmaschine mit einem parallel zum Verbrennungszylinder angeordneten Pumpenzylinder ohne schaedlichen Raum
US1372216A (en) * 1919-03-12 1921-03-22 James O Casaday Internal-combustion engine
US1473486A (en) * 1922-03-03 1923-11-06 Ambrose E Elliott Internal-combustion engine
FR550314A (fr) * 1922-04-19 1923-03-03 Moteur à explosion ou à combustion
US1609371A (en) * 1923-08-17 1926-12-07 Leissner Harry Ferdinand Internal-combustion engine
FR573900A (fr) * 1923-11-28 1924-07-02 Moteur à deux temps
US1583668A (en) * 1924-01-14 1926-05-04 Morgan W Davidson 2-cycle internal-combustion engine
US1819825A (en) * 1928-10-22 1931-08-18 Guy R Poyer Internal combustion engine
DE559214C (de) * 1930-04-10 1932-09-17 Eduardo Ceballos Zweitaktexplosionsmotor
FR712160A (fr) * 1931-01-10 1931-09-26 Moteur à explosion
FR801861A (fr) * 1936-02-13 1936-08-20 Moteur à deux temps
US3623463A (en) * 1969-09-24 1971-11-30 Gerrit De Vries Internal combustion engine
US3675630A (en) * 1970-07-02 1972-07-11 Cleo C Stratton Engine
US3880126A (en) * 1973-05-10 1975-04-29 Gen Motors Corp Split cylinder engine and method of operation
AU2228483A (en) * 1982-12-10 1984-06-14 Berlingeri, Placido Peter Internal combustion engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8502655A1 *

Also Published As

Publication number Publication date
WO1985002655A1 (fr) 1985-06-20

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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

Designated state(s): AT BE CH DE FR GB LI LU NL SE

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19851211