GB421266A - Improvements relating to four-stroke-cycle internal-combustion engines - Google Patents

Improvements relating to four-stroke-cycle internal-combustion engines

Info

Publication number
GB421266A
GB421266A GB763533A GB763533A GB421266A GB 421266 A GB421266 A GB 421266A GB 763533 A GB763533 A GB 763533A GB 763533 A GB763533 A GB 763533A GB 421266 A GB421266 A GB 421266A
Authority
GB
United Kingdom
Prior art keywords
shaft
pinion
sleeve
stop
journalled
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
GB763533A
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.)
ALBANO BONFA
Original Assignee
ALBANO BONFA
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 ALBANO BONFA filed Critical ALBANO BONFA
Priority to GB763533A priority Critical patent/GB421266A/en
Publication of GB421266A publication Critical patent/GB421266A/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
    • F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
    • F02B75/047—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of variable crankshaft position

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Transmission Devices (AREA)

Abstract

421,266. Gearing for converting reciprocating into rotary motion. BONFA, A., 608, Umbilo Road, Durban, South Africa. March 13, 1933, No. 7635. [Class 80 (i)] [See also Group XXVII] In engines in which the crank-shaft 6 is eccentric to the main-shaft 16, and the crankpin 15 describes a hypotrochoidal curve, an externally toothed wheel 70 journalled on the main shaft 16 is engaged by a pinion 71, of one-third the size, on a shaft 73 journalled in an enlargement of the shaft 16. Engaging pinions 72, 91 are keyed to the shafts 73, 6 respectively. Cam-sleeves 81, 82 operate the exhaust and inlet valve lifters 18, 19. Each sleeve is formed with a key working in a slot in the shaft, and engaging either side of a stop according to the direction of rotation. The key on sleeve 81 extends through 190 degrees and that on sleeve 82 through 10 degrees. The stop comprises hinged arms which may be forced apart for varying the timing, the pinion 70 being adjustable for this purpose, as well as for varying the compression ratio and for reversing, through an angle of from 38 to 42‹. A pin 74 in the pinion engages at one end cam surfaces in the adjoining bearing and at the other end a plate 75. Angular adjustment of the pinion 70 thus slides a rod 76 and tilts a lever 77 the end of which rests between the arms of the hinged stop for the feather keys of the sleeves 81, 82. Ignition contacts are carried by the mainshaft 16 and the wheel 70. Specifications 346,592, and 372,544, [Group XXVII], are referred to.
GB763533A 1933-03-13 1933-03-13 Improvements relating to four-stroke-cycle internal-combustion engines Expired GB421266A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB763533A GB421266A (en) 1933-03-13 1933-03-13 Improvements relating to four-stroke-cycle internal-combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB763533A GB421266A (en) 1933-03-13 1933-03-13 Improvements relating to four-stroke-cycle internal-combustion engines

Publications (1)

Publication Number Publication Date
GB421266A true GB421266A (en) 1934-12-13

Family

ID=9836886

Family Applications (1)

Application Number Title Priority Date Filing Date
GB763533A Expired GB421266A (en) 1933-03-13 1933-03-13 Improvements relating to four-stroke-cycle internal-combustion engines

Country Status (1)

Country Link
GB (1) GB421266A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000077368A1 (en) * 1999-06-09 2000-12-21 Fev Motorentechnik Gmbh Piston-type internal combustion engine having a variable combustion chamber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000077368A1 (en) * 1999-06-09 2000-12-21 Fev Motorentechnik Gmbh Piston-type internal combustion engine having a variable combustion chamber

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