GB1129441A - Two stroke multiple cylinder internal combustion engines - Google Patents

Two stroke multiple cylinder internal combustion engines

Info

Publication number
GB1129441A
GB1129441A GB4338066A GB4338066A GB1129441A GB 1129441 A GB1129441 A GB 1129441A GB 4338066 A GB4338066 A GB 4338066A GB 4338066 A GB4338066 A GB 4338066A GB 1129441 A GB1129441 A GB 1129441A
Authority
GB
United Kingdom
Prior art keywords
pistons
ports
exhaust
cylinder
stroke
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
GB4338066A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB4338066A priority Critical patent/GB1129441A/en
Publication of GB1129441A publication Critical patent/GB1129441A/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
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
    • 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
    • F02B25/12—Engines with U-shaped cylinders, having ports in each arm
    • 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
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/24—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type
    • F02B75/243—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type with only one crankshaft of the "boxer" type, e.g. all connecting rods attached to separate crankshaft bearings
    • 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
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1832—Number of cylinders eight
    • 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
    • F02B75/24—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type
    • F02B75/246—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type with only one crankshaft of the "pancake" type, e.g. pairs of connecting rods attached to common crankshaft bearing

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)

Abstract

1,129,441. Two-stroke engines. R.J. CLEMENTS. Sept. 14, 1967 [Sept. 28, 1966]. No. 43380/66. Heading F1B. A two-stroke I.C. engine has two or more pairs of cylinders, each pair being arranged in the fore and aft direction in a plane containing the crankshaft and being inter-connected by a common combustion chamber 3, Fig.1 at their heads, one cylinder of each pair having exhaust ports E and the other cylinder having inlet ports I, both sets of ports being uncovered by the pistons during the two-stroke cycle. Compressed air is supplied to inlet ports I from an enginedriven rotary blower or compressor (not shown). Fuel is injected into the combustion chambers 3, 4, 10A, 11 when the pistons 16 are at t.d.c. and the resultant combustion forces the pistons downwards towards b.d.c. until the exhaust port E starts being uncovered to allow the gases to exhaust under their residual pressure. Subsequently the inlet ports I are uncovered and scavenging is completed by the charging air. On the compression stroke the exhaust ports are closed after the inlet ports so that scavenging is completed by the beginning of compression. In another embodiment the pistons of an eight cylinder Vee engine have projections 18, Fig. 4 with an upper surface 19 shaped to conform to the roof 20 of the combustion chamber. Recesses 22 in the side walls of the projections define a combustion space 23 when the pistons are in the t.d.c. positions. Compressed air is supplied to the inlet ports from a blower (30), Fig. 3 (not shown) arranged between the banks of cylinders. In modifications, a mixture is supplied to the engine by a carburettor, the inlet port is arranged to give "swirl", and the exhaust pistion of a cylinder pair leads the inlet piston by a small angle.
GB4338066A 1966-09-28 1966-09-28 Two stroke multiple cylinder internal combustion engines Expired GB1129441A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4338066A GB1129441A (en) 1966-09-28 1966-09-28 Two stroke multiple cylinder internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4338066A GB1129441A (en) 1966-09-28 1966-09-28 Two stroke multiple cylinder internal combustion engines

Publications (1)

Publication Number Publication Date
GB1129441A true GB1129441A (en) 1968-10-02

Family

ID=10428512

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4338066A Expired GB1129441A (en) 1966-09-28 1966-09-28 Two stroke multiple cylinder internal combustion engines

Country Status (1)

Country Link
GB (1) GB1129441A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6054718U (en) * 1983-09-21 1985-04-17 本田技研工業株式会社 Cooling system for water-cooled two-stroke internal combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6054718U (en) * 1983-09-21 1985-04-17 本田技研工業株式会社 Cooling system for water-cooled two-stroke internal combustion engine
JPH022894Y2 (en) * 1983-09-21 1990-01-24

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