GB2456305A - Short stroke internal combustion engine with two connecting rods and two crankshafts per cylinder - Google Patents

Short stroke internal combustion engine with two connecting rods and two crankshafts per cylinder Download PDF

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Publication number
GB2456305A
GB2456305A GB0800297A GB0800297A GB2456305A GB 2456305 A GB2456305 A GB 2456305A GB 0800297 A GB0800297 A GB 0800297A GB 0800297 A GB0800297 A GB 0800297A GB 2456305 A GB2456305 A GB 2456305A
Authority
GB
United Kingdom
Prior art keywords
crankshafts
connecting rods
internal combustion
combustion engine
short 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.)
Withdrawn
Application number
GB0800297A
Other versions
GB0800297D0 (en
Inventor
Jeremy Fox
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 GB0800297A priority Critical patent/GB2456305A/en
Publication of GB0800297D0 publication Critical patent/GB0800297D0/en
Publication of GB2456305A publication Critical patent/GB2456305A/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F01B9/00—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups
    • F01B9/02—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with crankshaft
    • 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
    • F02B75/06—Engines with means for equalising torque
    • F02B75/065—Engines with means for equalising torque with double connecting rods or crankshafts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transmission Devices (AREA)

Abstract

A short stroke internal combustion engine has two connecting rods 2 and two crankshafts 3 per cylinder to keep the piston 1 parallel with the cylinder thus reducing wear and combining the advantage of rapid acceleration and engine longevity. The crankshafts 3 may rotate in opposite directions or in the same direction.

Description

I 2456305 Short Stroke Internal Combustion Engine Short stroke engines have been around for some time and have the advantage of more rapid acceleration over the more traditional long stroke engine. Up until now the problem with the short stroke has been its rapid wear on the piston thrust face and cylinder wall caused by piston rock.
This present invention seeks to overcome this problem by using two crankshafts and two connecting rods per cylinder. This keeps the piston parallel with the crankshafts, thus reducing wear.
An example of the invention will now be described by referring to the accompanying drawing.
Figure 1 shows a sectional end elevation with the piston halfway up its travel.
No.1 Piston; No.2 Connecting Rod; No. 3 Crankshafts.
As the piston (1) moves up and down it's movement is controlled by the connecting rods (2) which turn the crankshafts (3).

Claims (3)

  1. Claims 1. An internal combustion engine with two connecting rods and two crankshafts per cylinder.
  2. 2. An engine according to claim I where the crankshafts rotate in opposite directions.
  3. 3. An engine according to claim 2 where the crankshafts rotate in the same direction.
GB0800297A 2008-01-09 2008-01-09 Short stroke internal combustion engine with two connecting rods and two crankshafts per cylinder Withdrawn GB2456305A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0800297A GB2456305A (en) 2008-01-09 2008-01-09 Short stroke internal combustion engine with two connecting rods and two crankshafts per cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0800297A GB2456305A (en) 2008-01-09 2008-01-09 Short stroke internal combustion engine with two connecting rods and two crankshafts per cylinder

Publications (2)

Publication Number Publication Date
GB0800297D0 GB0800297D0 (en) 2008-02-20
GB2456305A true GB2456305A (en) 2009-07-15

Family

ID=39144634

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0800297A Withdrawn GB2456305A (en) 2008-01-09 2008-01-09 Short stroke internal combustion engine with two connecting rods and two crankshafts per cylinder

Country Status (1)

Country Link
GB (1) GB2456305A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9103277B1 (en) 2014-07-03 2015-08-11 Daniel Sexton Gurney Moment-cancelling 4-stroke engine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4791787A (en) * 1985-12-05 1988-12-20 Paul Marius A Regenerative thermal engine
US5595147A (en) * 1995-12-15 1997-01-21 Feuling; James J. Contra-rotating twin crankshaft internal combustion engine
US5873333A (en) * 1996-12-30 1999-02-23 Wittner; John A. Motorcycle with twin crankshaft mechanism
GB2349417A (en) * 1999-04-26 2000-11-01 Brian Mawdsley I.c. engine with piston connected by two con-rods to a pair of contra-rotating crankshafts
US6447268B1 (en) * 2000-11-28 2002-09-10 John Abramopaulos Positive displacement engine with integrated positive displacement rotary fluid compressor
US20070079788A1 (en) * 2005-10-11 2007-04-12 Neander Motors Gmbh Piston engine
WO2007129792A1 (en) * 2006-05-08 2007-11-15 Jin Euk Choi Power conversion device for internal combustion engine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4791787A (en) * 1985-12-05 1988-12-20 Paul Marius A Regenerative thermal engine
US5595147A (en) * 1995-12-15 1997-01-21 Feuling; James J. Contra-rotating twin crankshaft internal combustion engine
US5873333A (en) * 1996-12-30 1999-02-23 Wittner; John A. Motorcycle with twin crankshaft mechanism
GB2349417A (en) * 1999-04-26 2000-11-01 Brian Mawdsley I.c. engine with piston connected by two con-rods to a pair of contra-rotating crankshafts
US6447268B1 (en) * 2000-11-28 2002-09-10 John Abramopaulos Positive displacement engine with integrated positive displacement rotary fluid compressor
US20070079788A1 (en) * 2005-10-11 2007-04-12 Neander Motors Gmbh Piston engine
WO2007129792A1 (en) * 2006-05-08 2007-11-15 Jin Euk Choi Power conversion device for internal combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9103277B1 (en) 2014-07-03 2015-08-11 Daniel Sexton Gurney Moment-cancelling 4-stroke engine
US9732615B2 (en) 2014-07-03 2017-08-15 Daniel Sexton Gurney Moment-cancelling 4-stroke engine

Also Published As

Publication number Publication date
GB0800297D0 (en) 2008-02-20

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)