GB1353288A - Two-stroke engine - Google Patents

Two-stroke engine

Info

Publication number
GB1353288A
GB1353288A GB4578272A GB4578272A GB1353288A GB 1353288 A GB1353288 A GB 1353288A GB 4578272 A GB4578272 A GB 4578272A GB 4578272 A GB4578272 A GB 4578272A GB 1353288 A GB1353288 A GB 1353288A
Authority
GB
United Kingdom
Prior art keywords
point
air
duct
cylinder
towards
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.)
Expired
Application number
GB4578272A
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.)
MBK Industrie SA
Original Assignee
Ateliers de la Motobecane SA
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 Ateliers de la Motobecane SA filed Critical Ateliers de la Motobecane SA
Publication of GB1353288A publication Critical patent/GB1353288A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/10—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel peculiar to scavenged two-stroke engines, e.g. injecting into crankcase-pump chamber
    • 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
    • F02B25/14—Engines characterised by using fresh charge for scavenging cylinders using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/04—Injectors peculiar thereto
    • F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
    • F02M69/045—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the combustion chamber
    • 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
    • F02B75/12—Other methods of operation
    • F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Abstract

1353288 Fuel injection two-stroke I C engines ATELIERS DE LA MOTOBECANE 4 Oct 1972 [19 Oct 1971] 45782/72 Heading F1B A two-stroke engine has two transfer passages symmetrically disposed with respect to a diametral plane of the cylinder, which plane passes through the centre of the exhaust port and from which passages the flows converge towards a first point on a first generation of the cylinder diametrically opposite to that through the centre of the exhaust port; and an auxiliary transfer passage of smaller section than the normal passages and situated opposite the exhaust port and directing its flow towards a second point substantially opposite the first generatrix, the auxiliary passage containing the head of the fuel injector, the axis of which passes through the second point. The two transfer ports Tn are shaped so as to direct a flow of air, from the crank-case, towards a point P on the cylinder wall opposite the centre of the exhaust port E. Vertically beneath this point is an auxiliary duct Ti which also receives air from the crank-case and which contains a fuel injector I which directs fuel towards a point p which is opposite the point P. Since the air-flows As are established before injection begins, the fuel and the flow of air Ap from the duct Ti are deflected by the air-flows As in a loop towards the top of the combustion chamber. The flows As assist in scavenging the cylinder by pushing the exhaust gases out through the port E. Air reaches the duct Ti via a port L cut through the piston. Air enters the crank-case through two supply ports situated one on either side of, and slightly below the auxiliary duct Ti. In a modification the duct Ti is an inverted U- shape and a single supply port is arranged within the arms of the U. Alternatively both the supply port and the duct Ti may each have a single opening into the cylinder.
GB4578272A 1971-10-19 1972-10-04 Two-stroke engine Expired GB1353288A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7137422A FR2166420A5 (en) 1971-10-19 1971-10-19

Publications (1)

Publication Number Publication Date
GB1353288A true GB1353288A (en) 1974-05-15

Family

ID=9084554

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4578272A Expired GB1353288A (en) 1971-10-19 1972-10-04 Two-stroke engine

Country Status (5)

Country Link
DE (1) DE2250170A1 (en)
ES (1) ES407887A1 (en)
FR (1) FR2166420A5 (en)
GB (1) GB1353288A (en)
IT (1) IT970713B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4401063A (en) * 1981-04-06 1983-08-30 The Bendix Corporation Fuel distribution system for an internal combustion engine
GB2125480A (en) * 1982-08-09 1984-03-07 Outboard Marine Corp Fuel system for a crankcase compression two-stroke
GB2130642A (en) * 1982-10-09 1984-06-06 Nippon Clean Engine Res A stratified charge two-stroke internal-combustion engine
US4630591A (en) * 1982-02-17 1986-12-23 National Research Development Corporation Stratified charge internal combustion engines
GB2199617A (en) * 1987-01-09 1988-07-13 Piaggio & C Spa Low-pressure fuel injection into a two-stroke engine
USRE32938E (en) * 1982-08-09 1989-06-06 Outboard Marine Corporation Dual fuel system for internal combustion engine
GB2215398A (en) * 1988-03-09 1989-09-20 Chinese Petroleum Co Low pressure fuel injection into two-stroke engines
GB2276206A (en) * 1993-03-18 1994-09-21 Ford Motor Co Fuel injected engine.
US6631705B1 (en) 2000-07-10 2003-10-14 Lycoming Engines Modular fuel control apparatus

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4092958A (en) * 1975-09-04 1978-06-06 Brunswick Corporation Internal combustion engine
DE3027219C2 (en) * 1980-07-18 1983-07-28 Norbert Dipl.-Ing. 3014 Laatzen Kania Slot-controlled two-stroke internal combustion engine
AT391351B (en) * 1985-11-06 1990-09-25 Steyr Daimler Puch Ag TWO-STROKE COMBUSTION ENGINE WITH CRANKCASE RINSING AND A NOZZLE FOR FUEL INJECTION
FR2609498B1 (en) * 1987-01-14 1993-05-14 Thery Georges COMBUSTION CHAMBER OF A 2-STROKE RECIPROCATING ENGINE AND APPLIED ENGINE
AT397695B (en) * 1987-07-30 1994-06-27 Avl Verbrennungskraft Messtech TWO-STROKE INTERNAL COMBUSTION ENGINE
US4899698A (en) * 1987-10-30 1990-02-13 Georges Thery Combustion chamber for two-stroke reciprocating engine, and and engine making use thereof
FR2693507B1 (en) * 1992-07-09 1994-08-26 Aura Method and device for feeding a two-stroke internal combustion engine cylinder.
DE19512566C2 (en) * 1995-04-04 2000-05-18 Stihl Maschf Andreas Two-stroke engine with several overflow channels

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4401063A (en) * 1981-04-06 1983-08-30 The Bendix Corporation Fuel distribution system for an internal combustion engine
US4630591A (en) * 1982-02-17 1986-12-23 National Research Development Corporation Stratified charge internal combustion engines
GB2125480A (en) * 1982-08-09 1984-03-07 Outboard Marine Corp Fuel system for a crankcase compression two-stroke
USRE32938E (en) * 1982-08-09 1989-06-06 Outboard Marine Corporation Dual fuel system for internal combustion engine
GB2130642A (en) * 1982-10-09 1984-06-06 Nippon Clean Engine Res A stratified charge two-stroke internal-combustion engine
GB2199617A (en) * 1987-01-09 1988-07-13 Piaggio & C Spa Low-pressure fuel injection into a two-stroke engine
GB2215398A (en) * 1988-03-09 1989-09-20 Chinese Petroleum Co Low pressure fuel injection into two-stroke engines
GB2276206A (en) * 1993-03-18 1994-09-21 Ford Motor Co Fuel injected engine.
US6631705B1 (en) 2000-07-10 2003-10-14 Lycoming Engines Modular fuel control apparatus

Also Published As

Publication number Publication date
DE2250170A1 (en) 1973-04-26
FR2166420A5 (en) 1973-08-17
IT970713B (en) 1974-04-20
ES407887A1 (en) 1975-11-16

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee