GB252135A - Improvements in four-stroke cycle internal-combustion engines - Google Patents

Improvements in four-stroke cycle internal-combustion engines

Info

Publication number
GB252135A
GB252135A GB10372/26A GB1037226A GB252135A GB 252135 A GB252135 A GB 252135A GB 10372/26 A GB10372/26 A GB 10372/26A GB 1037226 A GB1037226 A GB 1037226A GB 252135 A GB252135 A GB 252135A
Authority
GB
United Kingdom
Prior art keywords
pistons
main
compression
crank
unequal
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
GB10372/26A
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.)
MARIE ADOLPHE JEAN DE LAFORCAD
Original Assignee
MARIE ADOLPHE JEAN DE LAFORCAD
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 MARIE ADOLPHE JEAN DE LAFORCAD filed Critical MARIE ADOLPHE JEAN DE LAFORCAD
Publication of GB252135A publication Critical patent/GB252135A/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
    • F02B75/00—Other engines
    • F02B75/28—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
    • F02B75/282—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders the pistons having equal strokes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B7/00—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
    • F01B7/02—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with oppositely reciprocating pistons
    • F01B7/14—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with oppositely reciprocating pistons acting on different main shafts
    • 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
    • F02B75/28—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

252,135. Laforcade, M. A. J. de. May 12,1925, [Convention date]. Four-stroke-cycle engines; driving-gear; pumps, centrifugal. - The expansion ratio is made greater than the compression ratio by using two pistons in each cylinder, one 2 driving the main crank shaft 1, the other 8 connected to a half-speed shaft 3. The diagram, Fig. 5, shows in dotted lines the movements of the two pistons, the full line curve representing the volume of the working chamber during a cycle. The charge is supplied by a fan, the admission taking place as shown on the diagram from the point a, to b, compression b to c. The charge is ignited and expands to point d, the exhaust taking place from d to e. One or both of the pistons has a mushroom head of less diameter than the piston but filling up the space between the pistons at the end of the compression stroke. The crank throws on the two shafts are unequal. The fan is driven from the spindle of one of the wheels in the train connecting the crank shafts. The halfspeed piston 8 may control terminal exhaust ports. In a modified arrangement the main pistons 21 Fig. 6 are in the upper parts of the cylinders, adjacent pairs being connected to a common cross-head and thence by outside-rods to the main crank shaft 23<a>; the two sets of main cranks are at 180‹ to each other. The half-speed pistons in one cylinder pair are spaced at 180‹ to each other and in a plane at 90‹ to the plane containing the other pair. The pistons may be unequal in diameter.
GB10372/26A 1925-05-12 1926-04-20 Improvements in four-stroke cycle internal-combustion engines Expired GB252135A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR252135X 1925-05-12

Publications (1)

Publication Number Publication Date
GB252135A true GB252135A (en) 1926-11-04

Family

ID=8884192

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10372/26A Expired GB252135A (en) 1925-05-12 1926-04-20 Improvements in four-stroke cycle internal-combustion engines

Country Status (1)

Country Link
GB (1) GB252135A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2527687A1 (en) * 1982-05-31 1983-12-02 Commw Of Australia ENERGY SOURCE COMPRISING AN INTERNAL COMBUSTION ENGINE AND A FAN
WO1998034012A1 (en) * 1997-02-04 1998-08-06 Bojcov, Tsvetan Nikolov Internal combustion engine
WO2016022423A3 (en) * 2014-08-04 2016-03-31 Achates Power, Inc. Opposed-piston engine structure with a split cylinder block
JP2016523752A (en) * 2013-05-10 2016-08-12 アカーテース パワー，インク． Arrangement of opposed piston engine in heavy truck

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2527687A1 (en) * 1982-05-31 1983-12-02 Commw Of Australia ENERGY SOURCE COMPRISING AN INTERNAL COMBUSTION ENGINE AND A FAN
GB2121107A (en) * 1982-05-31 1983-12-14 Commw Of Australia Supercharged opposed piston internal combustion engine
WO1998034012A1 (en) * 1997-02-04 1998-08-06 Bojcov, Tsvetan Nikolov Internal combustion engine
JP2016523752A (en) * 2013-05-10 2016-08-12 アカーテース パワー，インク． Arrangement of opposed piston engine in heavy truck
WO2016022423A3 (en) * 2014-08-04 2016-03-31 Achates Power, Inc. Opposed-piston engine structure with a split cylinder block
US9435290B2 (en) 2014-08-04 2016-09-06 Achates Power, Inc. Opposed-piston engine structure with a split cylinder block

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