FR2398181A1 - TWO STROKE ENGINE WITH OPPOSED PISTONS AND STRATIFIED LOAD - Google Patents

TWO STROKE ENGINE WITH OPPOSED PISTONS AND STRATIFIED LOAD

Info

Publication number
FR2398181A1
FR2398181A1 FR7818683A FR7818683A FR2398181A1 FR 2398181 A1 FR2398181 A1 FR 2398181A1 FR 7818683 A FR7818683 A FR 7818683A FR 7818683 A FR7818683 A FR 7818683A FR 2398181 A1 FR2398181 A1 FR 2398181A1
Authority
FR
France
Prior art keywords
stroke engine
opposed pistons
coupled
combustion chamber
engine
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.)
Granted
Application number
FR7818683A
Other languages
French (fr)
Other versions
FR2398181B1 (en
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.)
Piaggio and C SpA
Original Assignee
Piaggio and C 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 Piaggio and C SpA filed Critical Piaggio and C SpA
Publication of FR2398181A1 publication Critical patent/FR2398181A1/en
Application granted granted Critical
Publication of FR2398181B1 publication Critical patent/FR2398181B1/fr
Granted 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
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
    • F02B25/08—Engines with oppositely-moving reciprocating working pistons
    • 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
    • F02B17/00—Engines characterised by means for effecting stratification of charge in 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Supercharger (AREA)

Abstract

Ce moteur à combustion interne à deux temps et à carter pompe est du type comportant une ou plusieurs paires de cylindres 3 et 4 couplés par une chambre de combustion commune 21 et dans lequel les vilebrequins 7 et 8 sont accouplés par une transmission 9. Dans ce moteur, les carters pompes 11 et 14 communiquent avec les chambres correspondantes par des conduits de transfert séparés et ils sont de préférence alimentés avec des mélanges de richesse différente; par exemple l'un avec un mélange riche et l'autre un air non carburé. Ceci favorise la stratification de la charge dans la chambre de combustion et la réduction des émissions polluantes.This two-stroke internal combustion engine with a pump housing is of the type comprising one or more pairs of cylinders 3 and 4 coupled by a common combustion chamber 21 and in which the crankshafts 7 and 8 are coupled by a transmission 9. In this engine, the pump casings 11 and 14 communicate with the corresponding chambers by separate transfer conduits and they are preferably supplied with mixtures of different richness; for example one with a rich mixture and the other with non-carburized air. This favors the stratification of the charge in the combustion chamber and the reduction of pollutant emissions.

FR7818683A 1977-07-21 1978-06-22 TWO STROKE ENGINE WITH OPPOSED PISTONS AND STRATIFIED LOAD Granted FR2398181A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2599377A IT1081148B (en) 1977-07-21 1977-07-21 TWO-STROKE PISTON MOTOR OPPOSED WITH STRATIFIED CHARGE

Publications (2)

Publication Number Publication Date
FR2398181A1 true FR2398181A1 (en) 1979-02-16
FR2398181B1 FR2398181B1 (en) 1980-07-18

Family

ID=11218357

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7818683A Granted FR2398181A1 (en) 1977-07-21 1978-06-22 TWO STROKE ENGINE WITH OPPOSED PISTONS AND STRATIFIED LOAD

Country Status (6)

Country Link
JP (1) JPS5423807A (en)
DE (1) DE2817722A1 (en)
FR (1) FR2398181A1 (en)
GB (1) GB1600049A (en)
IT (1) IT1081148B (en)
NL (1) NL7805349A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2470247A1 (en) * 1979-11-27 1981-05-29 Piaggio & C Spa TWO-STROKE ENGINE WITH OPPOSITE PISTONS WORKING WITH A STRATIFIED LOAD

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2186913B (en) * 1986-02-25 1989-11-08 Coventry City Council Internal combustion engine
DE19651175C2 (en) * 1996-12-10 1999-12-30 Otto C Pulch Counter-piston two-stroke internal combustion engine with direct fuel injection into the cylinder and adjustable rotation and turbulence of the charge air

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2222534A1 (en) * 1973-03-19 1974-10-18 Yamaha Motor Co Ltd
DE2402508A1 (en) * 1974-01-19 1975-07-31 Fichtel & Sachs Ag Horizontally opposed two stroke engine - cylinders have catalytic disc divider
AU483443B2 (en) * 1973-03-28 1975-10-02 General Motors-Holden's Pty. Ltd. Improved internal combustion engine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5654446B2 (en) * 1973-09-18 1981-12-25
JPS5654447B2 (en) * 1974-01-21 1981-12-25
JPS50102707A (en) * 1974-01-21 1975-08-14

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2222534A1 (en) * 1973-03-19 1974-10-18 Yamaha Motor Co Ltd
AU483443B2 (en) * 1973-03-28 1975-10-02 General Motors-Holden's Pty. Ltd. Improved internal combustion engine
DE2402508A1 (en) * 1974-01-19 1975-07-31 Fichtel & Sachs Ag Horizontally opposed two stroke engine - cylinders have catalytic disc divider

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2470247A1 (en) * 1979-11-27 1981-05-29 Piaggio & C Spa TWO-STROKE ENGINE WITH OPPOSITE PISTONS WORKING WITH A STRATIFIED LOAD

Also Published As

Publication number Publication date
GB1600049A (en) 1981-10-14
NL7805349A (en) 1979-01-23
JPS5423807A (en) 1979-02-22
DE2817722A1 (en) 1979-02-08
IT1081148B (en) 1985-05-16
FR2398181B1 (en) 1980-07-18

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Legal Events

Date Code Title Description
ST Notification of lapse