EP4159989A3 - Variable compression-ratio device - Google Patents

Variable compression-ratio device Download PDF

Info

Publication number
EP4159989A3
EP4159989A3 EP22195501.6A EP22195501A EP4159989A3 EP 4159989 A3 EP4159989 A3 EP 4159989A3 EP 22195501 A EP22195501 A EP 22195501A EP 4159989 A3 EP4159989 A3 EP 4159989A3
Authority
EP
European Patent Office
Prior art keywords
crankshaft
variable compression
gear
ratio device
input gear
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.)
Pending
Application number
EP22195501.6A
Other languages
German (de)
French (fr)
Other versions
EP4159989A2 (en
Inventor
Masaki Cho
Masafumi Taki
Noriaki Okano
Kengo TOMIZAWA
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
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
Priority claimed from JP2021166512A external-priority patent/JP7316337B2/en
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of EP4159989A2 publication Critical patent/EP4159989A2/en
Publication of EP4159989A3 publication Critical patent/EP4159989A3/en
Pending 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
    • F02B75/048—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable crank stroke length

Abstract

An object is to provide oil supply to a variable compression-ratio device. A variable compression-ratio device includes: a gear shaft (52) disposed inside a crankshaft (12) of an internal combustion engine (11) coaxially with the crankshaft (12) and configured to be rotationally driven by a power source (32); an input gear (51) connected to the gear shaft (52); an intermediate gear (50) supported by a crank web (16) of the crankshaft (12) and engaged with the input gear (51); an eccentric cam (31) disposed between a crank pin (17) of the crankshaft (12) and a large end (18a) of a connecting rod (18) and engaged with the intermediate gear (50); and a first oil channel (5) configured to supply lubricating oil to the input gear (51).
EP22195501.6A 2021-09-30 2022-09-14 Variable compression-ratio device Pending EP4159989A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021161719 2021-09-30
JP2021166512A JP7316337B2 (en) 2021-09-30 2021-10-08 Compression ratio variable device

Publications (2)

Publication Number Publication Date
EP4159989A2 EP4159989A2 (en) 2023-04-05
EP4159989A3 true EP4159989A3 (en) 2023-04-19

Family

ID=83318928

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22195501.6A Pending EP4159989A3 (en) 2021-09-30 2022-09-14 Variable compression-ratio device

Country Status (2)

Country Link
EP (1) EP4159989A3 (en)
BR (1) BR102022018468A2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US460642A (en) * 1891-10-06 Variable crank-motion
DE164819C (en) * 1904-08-02 1905-11-16
US2209012A (en) * 1933-10-27 1940-07-23 Jean A H Barkeij Internal combustion engine
DE102008009869A1 (en) * 2008-02-19 2009-08-20 Audi Ag Crank shaft, particularly for internal combustion engine, has crank shaft stroke, which has stroke plug, journal plug and adjusting device for distance adjustment of stroke plug for journal plug
WO2017211727A1 (en) * 2016-06-09 2017-12-14 Gomecsys B.V. Heat engine provided with an improved system for varying the compression ratio

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2889320B1 (en) 2005-07-27 2007-10-26 Smartquantum Sa OPTICAL TRANSMISSION SYSTEM AND DEVICE FOR RECEIVING OPTICAL SIGNAL
JP5634160B2 (en) 2010-08-04 2014-12-03 本田技研工業株式会社 Support structure for crankshaft of internal combustion engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US460642A (en) * 1891-10-06 Variable crank-motion
DE164819C (en) * 1904-08-02 1905-11-16
US2209012A (en) * 1933-10-27 1940-07-23 Jean A H Barkeij Internal combustion engine
DE102008009869A1 (en) * 2008-02-19 2009-08-20 Audi Ag Crank shaft, particularly for internal combustion engine, has crank shaft stroke, which has stroke plug, journal plug and adjusting device for distance adjustment of stroke plug for journal plug
WO2017211727A1 (en) * 2016-06-09 2017-12-14 Gomecsys B.V. Heat engine provided with an improved system for varying the compression ratio

Also Published As

Publication number Publication date
EP4159989A2 (en) 2023-04-05
BR102022018468A2 (en) 2023-04-11

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