EP0621403A1 - Drei Zylinder Brennkraftmaschine mit Zwischeneinlasszylinder und Ausslasszylinder - Google Patents

Drei Zylinder Brennkraftmaschine mit Zwischeneinlasszylinder und Ausslasszylinder Download PDF

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Publication number
EP0621403A1
EP0621403A1 EP94104482A EP94104482A EP0621403A1 EP 0621403 A1 EP0621403 A1 EP 0621403A1 EP 94104482 A EP94104482 A EP 94104482A EP 94104482 A EP94104482 A EP 94104482A EP 0621403 A1 EP0621403 A1 EP 0621403A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
auxiliary
cylinders
engine according
complementary
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Withdrawn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
EP94104482A
Other languages
English (en)
French (fr)
Inventor
Dante Giacosa
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 EP0621403A1 publication Critical patent/EP0621403A1/de
Withdrawn legal-status Critical Current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
    • 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
    • F02B33/26—Four-stroke engines characterised by having crankcase pumps
    • 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
    • F02B41/00—Engines characterised by special means for improving conversion of heat or pressure energy into mechanical power
    • F02B41/02—Engines with prolonged expansion
    • F02B41/06—Engines with prolonged expansion in compound cylinders
    • 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
    • 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
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
    • 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
    • F02B2075/1812—Number of cylinders three

Definitions

  • This invention refers to an internal combustion engine with two in line cylinders provided with a third cylinder which works as a balancing cylinder and as a silencer.
  • the third cylinder apart from being used as a balance against the alternating mass flows, also serves as a compressor during delivery strokes and as an expansion chamber during return strokes, and furthermore as a silencer and as a heat exchanger to reduce emissions.
  • the two end cranks of the driving shaft are parallel and therefore set at a 360° angle, meanwhile the crank of the intermediate cylinder is set at a 180° angle.
  • the feeding to the working cylinders, since ignition and combustion occur in them, is carried out for each by means of a duct regulated by one or more valves which is connected to the chamber of the central cylinder, while discharge outwards from the central cylinder is also regulated by one or more valves.
  • An engine of this type is particularly suitable for use in small city motor vehicles which must be highly compact, economical, powerful and silent and which, at the same time, must respect strict emission levels.
  • the aim of this invention is to improve the features of the engine described above by realizing a motor with more power and lower emissions but with substantially the same dimensions as the above.
  • Said aim is reached by means of an engine of said type characterized in that the feeding and the discharge of the lateral working cylinders take place through the central auxiliary or complementary cylinder, with at least one connecting duct between said auxiliary cylinder and each lateral working cylinder and characterized in that the auxiliary or complementary cylinder works to a two stroke cycle and the lateral working cylinders work on a four stroke cycle.
  • all three of said cylinders are used as pumps to feed, through their block, a corresponding pressurized air plenum chamber, since at every stroke of the piston towards the bottom dead centre, a volume of air about double the volume moved by each piston is sent to the pressurized storage chamber.
  • a complete internal combustion engine is indicated by the number (1), comprising the cylinder block (2) and the head (3).
  • the cylinder (6) is provided with at least one exhaust valve (19) which regulates an exhaust duct (20). All the valves (16,17,19) are driven by means of a camshaft (22) positioned on the engine cylinder head (3), together with the fuel injectors (24) and with the spark plugs (25). In the wall of the cylinder (6), corresponding to the bottom dead point of the piston (8), there are the inlet ports (26) for a feeding duct (27) from the pressurized air plenum chamber (28), described later, which are activated by the alternate movements of the piston (8).
  • Said plenum chamber (28) is connected by means of ducts (30) to the cylinder block of the three cylinders, with the interposition of nonreturn blade valves (32), oriented towards the chamber so that the air in the cylinder block, having been sucked in from outside through the ducts (35) which are also provided with nonreturn, inwardly oriented, blade valves (36), is pumped into the chamber by the same movement of the pistons thus taking advantage of a principle typical of a two stroke engine.
  • the pressure in the chamber results from the inflow of a volume of air into it equal, each time, to the total volume of the cylinder.
  • cranks of the working cylinders are, as said, coaxial meanwhile the crank of the intermediate cylinder is at a 180° angle and therefore they balance each other.
  • valve of the lateral cylinders can be used both for the feeding and the discharge operations of the central cylinder.
  • the working cycle of the two lateral working cylinders (5) is that normally associated with a four stroke internal combustion engine, while the auxiliary cylinder(6), although without ignition, can be defined as a two stroke cycle. In fact it works as a feeding and as a discharge for both cylinders the strokes of which cylinders are displaced by one complete rotation of the crank. Therefore, while one cylinder is in its inlet phase , the other is in its expansion phase , as shown in figure 4. In the next figure, the positions and strokes of the pistons are shown for every 60° rotation of the driving shaft which both, obviously, share.
  • the exhaust valve of the central auxiliary cylinder (6) will always open together with the exhaust valves of the lateral cylinders, while for aspiration, the inlet ports (26) will supply the necessary compressed fluid from the plenum chamber (28). This fluid is further compressed by the piston (8) during the feeding phase into the lateral cylinder, given that the chamber of cylinder (6) has a greater volume than that of the cylinders (5).

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)
EP94104482A 1993-04-20 1994-03-22 Drei Zylinder Brennkraftmaschine mit Zwischeneinlasszylinder und Ausslasszylinder Withdrawn EP0621403A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO930265A IT1260918B (it) 1993-04-20 1993-04-20 Motore a combustione interna a tre cilindri di cui uno itermedio di alimentazione e scarico.
ITTO930265 1993-04-20

Publications (1)

Publication Number Publication Date
EP0621403A1 true EP0621403A1 (de) 1994-10-26

Family

ID=11411407

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94104482A Withdrawn EP0621403A1 (de) 1993-04-20 1994-03-22 Drei Zylinder Brennkraftmaschine mit Zwischeneinlasszylinder und Ausslasszylinder

Country Status (2)

Country Link
EP (1) EP0621403A1 (de)
IT (1) IT1260918B (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2339844A (en) * 1998-07-24 2000-02-09 John Eric Dowell Quieter parallel-twin four-stroke i.c. engine with additional expansion cylinder
EP1961943A1 (de) * 2007-02-22 2008-08-27 Seneca S.A. Brennkraftmotor
DE102010015698A1 (de) * 2010-04-16 2011-10-20 Seneca International Ag Brennkraftmotor
DE102010025050A1 (de) * 2010-06-18 2011-12-22 Seneca International Ag Brennkraftmotor
DE102010025051A1 (de) * 2010-06-18 2011-12-22 Seneca International Ag Brennkraftmotor
US20130061823A1 (en) * 2011-09-14 2013-03-14 GM Global Technology Operations LLC Engine assembly including multiple bore center pitch dimensions
CN103244256A (zh) * 2012-02-08 2013-08-14 通用汽车环球科技运作有限责任公司 采用双压缩和单膨胀过程的内燃发动机
CN106523148A (zh) * 2015-09-11 2017-03-22 现代自动车株式会社 联合循环燃烧控制型三缸发动机及其控制方法
GB2496407B (en) * 2011-11-10 2017-11-08 Ford Global Tech Llc A three cylinder engine with a deactivatable cylinder.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB169799A (en) * 1920-07-03 1921-10-03 Waldo George Gernandt Improvements in internal combustion engines
JPS5820927A (ja) * 1981-07-28 1983-02-07 Kazuhiko Nishiyama ス−パ−・チヤ−ジヤ−
EP0200714A2 (de) * 1985-04-02 1986-11-05 Dr. Brücker & Zeman SOFT COMBUSTION SYSTEMS Gesellschaft bürgerlichen Rechts Hubkolben-Verbrennungskraftmaschine
DE3832013A1 (de) * 1987-09-17 1990-03-29 Dancho Zochev Dipl Ing Donkov Hubkolben-brennkraftmaschine mit kurbelgehaeuse-ladeluftpumpen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB169799A (en) * 1920-07-03 1921-10-03 Waldo George Gernandt Improvements in internal combustion engines
JPS5820927A (ja) * 1981-07-28 1983-02-07 Kazuhiko Nishiyama ス−パ−・チヤ−ジヤ−
EP0200714A2 (de) * 1985-04-02 1986-11-05 Dr. Brücker & Zeman SOFT COMBUSTION SYSTEMS Gesellschaft bürgerlichen Rechts Hubkolben-Verbrennungskraftmaschine
DE3832013A1 (de) * 1987-09-17 1990-03-29 Dancho Zochev Dipl Ing Donkov Hubkolben-brennkraftmaschine mit kurbelgehaeuse-ladeluftpumpen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 7, no. 98 (M - 210)<1243> 26 April 1983 (1983-04-26) *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2339844A (en) * 1998-07-24 2000-02-09 John Eric Dowell Quieter parallel-twin four-stroke i.c. engine with additional expansion cylinder
EP1961943A1 (de) * 2007-02-22 2008-08-27 Seneca S.A. Brennkraftmotor
DE102010015698A1 (de) * 2010-04-16 2011-10-20 Seneca International Ag Brennkraftmotor
DE102010025050A1 (de) * 2010-06-18 2011-12-22 Seneca International Ag Brennkraftmotor
DE102010025051A1 (de) * 2010-06-18 2011-12-22 Seneca International Ag Brennkraftmotor
DE102010025051A8 (de) * 2010-06-18 2012-03-08 Seneca International Ag Brennkraftmotor
DE102010025050A8 (de) * 2010-06-18 2012-03-08 Seneca International Ag Brennkraftmotor
US20130061823A1 (en) * 2011-09-14 2013-03-14 GM Global Technology Operations LLC Engine assembly including multiple bore center pitch dimensions
US8763570B2 (en) * 2011-09-14 2014-07-01 GM Global Technology Operations LLC Engine assembly including multiple bore center pitch dimensions
GB2496407B (en) * 2011-11-10 2017-11-08 Ford Global Tech Llc A three cylinder engine with a deactivatable cylinder.
CN103244256A (zh) * 2012-02-08 2013-08-14 通用汽车环球科技运作有限责任公司 采用双压缩和单膨胀过程的内燃发动机
CN106523148A (zh) * 2015-09-11 2017-03-22 现代自动车株式会社 联合循环燃烧控制型三缸发动机及其控制方法

Also Published As

Publication number Publication date
IT1260918B (it) 1996-04-29
ITTO930265A1 (it) 1994-10-20
ITTO930265A0 (it) 1993-04-20

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