GB1435958A - Two-stroke engine - Google Patents

Two-stroke engine

Info

Publication number
GB1435958A
GB1435958A GB4955773A GB4955773A GB1435958A GB 1435958 A GB1435958 A GB 1435958A GB 4955773 A GB4955773 A GB 4955773A GB 4955773 A GB4955773 A GB 4955773A GB 1435958 A GB1435958 A GB 1435958A
Authority
GB
United Kingdom
Prior art keywords
ports
baffle
main inlet
recesses
cylinder
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
GB4955773A
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.)
Brunswick Corp
Original Assignee
Brunswick Corp
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 Brunswick Corp filed Critical Brunswick Corp
Publication of GB1435958A publication Critical patent/GB1435958A/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
    • 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
    • F02B25/18—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 the charge flowing upward essentially along cylinder wall adjacent the inlet ports, e.g. by means of deflection rib on piston
    • 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

Abstract

1435958 Two-stroke engines BRUNSWICK CORP 24 Oct 1973 [17 Nov 1972] 49557/73 Heading F1B A baffle 13 on the piston 11 to direct air or mixture from main inlet ports 6, 7, 8 is arranged between the main inlet ports and exhaust ports 9. Auxiliary inlet ports 16, 17 are located on the exhaust port side of the baffle to the main inlet port side of a plane 18 bisecting the cylinder between the main inlet and exhaust ports. The ports 6 and 8 formed in a liner 14 or the cylinder block 1 may have top edges, Fig. 5 (not shown), perpendicular to the cylinder axis and defining sharp edges (22) with recesses 21 at the downstream end of the transfer passage 2. The passage 2 has a constriction 26 in the path to the ports 6 and 8 and in the path to the port 7 is inclined to the cylinder axis in the same direction as the upper and lower edges 15 of the port 7. The ports 16, 17 communicate with the crank-case 4 through recesses in the cylinder wall and holes 20 in the piston 11 and the upper ends of the recesses are defined by part spherical surfaces (19), Fig. 4 (not shown), below the top edges of the ports 6 and 8. Two auxiliary ports may be provided adjacent each end of the baffle 13, Fig. 6 (not shown). The baffle 13 may be convex or concave.
GB4955773A 1972-11-17 1973-10-24 Two-stroke engine Expired GB1435958A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US307401A US3858562A (en) 1972-11-17 1972-11-17 Multiple input port internal combustion engine

Publications (1)

Publication Number Publication Date
GB1435958A true GB1435958A (en) 1976-05-19

Family

ID=23189599

Family Applications (2)

Application Number Title Priority Date Filing Date
GB3747675A Expired GB1435959A (en) 1972-11-17 1973-10-24 Two-stroke engine
GB4955773A Expired GB1435958A (en) 1972-11-17 1973-10-24 Two-stroke engine

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB3747675A Expired GB1435959A (en) 1972-11-17 1973-10-24 Two-stroke engine

Country Status (9)

Country Link
US (1) US3858562A (en)
JP (1) JPS5230654B2 (en)
AU (1) AU476460B2 (en)
BE (1) BE807430A (en)
CA (1) CA989313A (en)
DE (2) DE2365884A1 (en)
GB (2) GB1435959A (en)
IT (1) IT996466B (en)
SE (1) SE402617B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4174685A (en) * 1978-07-05 1979-11-20 Ab Volvo Penta Two stroke cycle internal combustion engine
US4549507A (en) * 1984-09-19 1985-10-29 Brunswick Corp. Two cycle loop scavenged engine with improved transfer passage flow

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4305361A (en) * 1975-09-03 1981-12-15 Perry John C Two cycle baffled piston engine with post-baffle scavenging
JPS5650316Y2 (en) * 1977-09-06 1981-11-25
JPS54120840U (en) * 1978-02-08 1979-08-24
US4340018A (en) * 1979-12-26 1982-07-20 Outboard Marine Corporation Internal combustion engine having a wet-type cylinder liner and process for manufacturing same
US4632169A (en) * 1985-05-01 1986-12-30 Outboard Marine Corporation Two cycle cylinder block foam pattern
US4802447A (en) * 1985-12-17 1989-02-07 Brunswick Corporation Foam pattern for engine cylinder block
JPH0658152A (en) * 1992-08-04 1994-03-01 Sanshin Ind Co Ltd Scavenging port outlet shape for two-cycle engine
WO1998034016A1 (en) * 1997-02-03 1998-08-06 The Continuous-Cycle Engine Development Co. Limited Combustion chamber for engines
US5992358A (en) * 1997-03-17 1999-11-30 Yamaha Hatsudoki Kabushiki Kaisha Scavenge system for two cycle engines
JPH1182027A (en) * 1997-09-02 1999-03-26 Tanaka Kogyo Kk 2-cycle engine
US6273037B1 (en) * 1998-08-21 2001-08-14 Design & Manufacturing Solutions, Inc. Compressed air assisted fuel injection system
FR2972375B1 (en) * 2011-03-11 2014-04-11 Renault Sa PROCESS FOR MACHINING THE ROD PASSAGE IN A CYLINDER CASTER CYLINDER CASING AND MOTOR OBTAINED BY THE METHOD

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2573989A (en) * 1948-11-09 1951-11-06 Napier & Son Ltd Internal-combustion engine operated on the two-stroke cycle
US3444335A (en) * 1965-01-04 1969-05-13 John Walton Phonograph pick-up with de-coupling of the stylus mass
US3257998A (en) * 1965-02-04 1966-06-28 Mcculloch Corp Cylinder for internal combustion engine
US3487817A (en) * 1968-02-13 1970-01-06 Ernest A Von Seggern Two cycle engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4174685A (en) * 1978-07-05 1979-11-20 Ab Volvo Penta Two stroke cycle internal combustion engine
US4549507A (en) * 1984-09-19 1985-10-29 Brunswick Corp. Two cycle loop scavenged engine with improved transfer passage flow

Also Published As

Publication number Publication date
JPS5230654B2 (en) 1977-08-09
SE402617B (en) 1978-07-10
DE2354623B2 (en) 1976-10-14
IT996466B (en) 1975-12-10
BE807430A (en) 1974-03-15
DE2354623A1 (en) 1974-06-06
AU6141473A (en) 1975-04-17
AU476460B2 (en) 1976-09-23
US3858562A (en) 1975-01-07
GB1435959A (en) 1976-05-19
DE7339122U (en) 1977-09-08
JPS4980418A (en) 1974-08-02
CA989313A (en) 1976-05-18
DE2365884A1 (en) 1976-09-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee