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GB824673A - Improvements in and relating to two-stroke internal combustion engines with piston-controlled ports - Google Patents

Improvements in and relating to two-stroke internal combustion engines with piston-controlled ports

Info

Publication number
GB824673A
GB824673A GB2304156A GB2304156A GB824673A GB 824673 A GB824673 A GB 824673A GB 2304156 A GB2304156 A GB 2304156A GB 2304156 A GB2304156 A GB 2304156A GB 824673 A GB824673 A GB 824673A
Authority
GB
United Kingdom
Prior art keywords
ports
reservoirs
crankcase
cylinder
piston
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
GB2304156A
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 GB2304156A priority Critical patent/GB824673A/en
Priority to ES0236740A priority patent/ES236740A1/en
Publication of GB824673A publication Critical patent/GB824673A/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
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/02—Engines with reciprocating-piston pumps; Engines with crankcase pumps
    • F02B33/04—Engines with reciprocating-piston pumps; Engines with crankcase pumps with simple crankcase pumps, i.e. with the rear face of a non-stepped working piston acting as sole pumping member in co-operation with the crankcase
    • 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)

Abstract

824,673. Two-stroke engines. EHRLICH, J. July 23, 1957 [July 25, 1956], No. 23041/56. Classes 7(2) and 7(3) Crankcase compressed air or, as shown, combustible mixture is transferred to the cylinder both via passages 41 and ports 40 and via reservoirs 44 filled when their only ports 43 communicate with the crankcase via piston wall ports 47. The reservoirs 44, which have already been isolated when the ports 40 open, discharge when cylinder exhaust through a port 38 is about to cause a negative cylinder pressure which is thus substantially avoided. Charge from the reservoirs 44 remains in the piston crown concavity and protects the spark plug 32 from exhaust gases on charge compression. The crankcase may be supplied from a compressor. In a modification, the piston crown is concave and co-acts with a convex cylinder head having a central domed recess at the apex of which a spark plug or fuel injector is mounted axially of the cylinder, the reservoirs 44 being dispensed with and both the ports 40, 43 communicating with the crankcase via transfer passages fed through piston wall ports.
GB2304156A 1956-07-25 1956-07-25 Improvements in and relating to two-stroke internal combustion engines with piston-controlled ports Expired GB824673A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2304156A GB824673A (en) 1956-07-25 1956-07-25 Improvements in and relating to two-stroke internal combustion engines with piston-controlled ports
ES0236740A ES236740A1 (en) 1956-07-25 1957-07-24 Improvements in and relating to two-stroke internal combustion engines with piston-controlled ports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2304156A GB824673A (en) 1956-07-25 1956-07-25 Improvements in and relating to two-stroke internal combustion engines with piston-controlled ports

Publications (1)

Publication Number Publication Date
GB824673A true GB824673A (en) 1959-12-02

Family

ID=10189144

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2304156A Expired GB824673A (en) 1956-07-25 1956-07-25 Improvements in and relating to two-stroke internal combustion engines with piston-controlled ports

Country Status (2)

Country Link
ES (1) ES236740A1 (en)
GB (1) GB824673A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2155101A (en) * 1984-02-29 1985-09-18 Chen Jin Jin I.C. engine combustion chamber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2155101A (en) * 1984-02-29 1985-09-18 Chen Jin Jin I.C. engine combustion chamber

Also Published As

Publication number Publication date
ES236740A1 (en) 1958-01-01

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