JPS5638522A - Four-cycle internal combustion engine - Google Patents

Four-cycle internal combustion engine

Info

Publication number
JPS5638522A
JPS5638522A JP11457279A JP11457279A JPS5638522A JP S5638522 A JPS5638522 A JP S5638522A JP 11457279 A JP11457279 A JP 11457279A JP 11457279 A JP11457279 A JP 11457279A JP S5638522 A JPS5638522 A JP S5638522A
Authority
JP
Japan
Prior art keywords
exhaust
ports
combustion engine
internal combustion
communicated
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.)
Granted
Application number
JP11457279A
Other languages
Japanese (ja)
Other versions
JPS6229625B2 (en
Inventor
Shoichi Honda
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
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP11457279A priority Critical patent/JPS5638522A/en
Publication of JPS5638522A publication Critical patent/JPS5638522A/en
Publication of JPS6229625B2 publication Critical patent/JPS6229625B2/ja
Granted 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
    • F02B75/20—Multi-cylinder engines with cylinders all in one line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/18—Other cylinders
    • F02F1/183—Oval or square 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
    • F02B2075/1804—Number of cylinders
    • F02B2075/1816—Number of cylinders four
    • 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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/18—DOHC [Double overhead camshaft]

Abstract

PURPOSE: To improve the suctions and exhaust efficiencies of an internal combustion engine whose cylinder bores and pistons have elliptical cross sections by permitting a plurality of suction ports and exhaust ports provided for each of the combustion chambers to gather and be communicated with one main port respectively.
CONSTITUTION: A four-cycle internal combustion engine has a cylinder block 1 provided with four cylinder bores 4... having elliptical cross sections and a cylinder head 2 provided with four combustion chambers 12... of the same shape corresponding to the cylinder bores 4.... Four suction valve openings 13... and four exhaust valve openings 14... are made in the walls of each combustion chamber 12 divided by the short axis s-s of the cross sections. These valve openings 13... and 14... are communicated with suction ports 151W154 and exhaust ports 171W174 respectively, and these porst 151W154 and 171W174 gather and are communicated with one main suction port 16 and one main exhaust port 18 respectively. These ports 16 and 18 are arranged inclining with respect to the longitudinal central line L of the cylinder bore 4 so as to form a V shape.
COPYRIGHT: (C)1981,JPO&Japio
JP11457279A 1979-09-06 1979-09-06 Four-cycle internal combustion engine Granted JPS5638522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11457279A JPS5638522A (en) 1979-09-06 1979-09-06 Four-cycle internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11457279A JPS5638522A (en) 1979-09-06 1979-09-06 Four-cycle internal combustion engine

Publications (2)

Publication Number Publication Date
JPS5638522A true JPS5638522A (en) 1981-04-13
JPS6229625B2 JPS6229625B2 (en) 1987-06-26

Family

ID=14641179

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11457279A Granted JPS5638522A (en) 1979-09-06 1979-09-06 Four-cycle internal combustion engine

Country Status (1)

Country Link
JP (1) JPS5638522A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5021110A (en) * 1973-06-27 1975-03-06
JPS5339527A (en) * 1976-09-24 1978-04-11 Yamatake Honeywell Co Ltd Combustion safty device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5021110A (en) * 1973-06-27 1975-03-06
JPS5339527A (en) * 1976-09-24 1978-04-11 Yamatake Honeywell Co Ltd Combustion safty device

Also Published As

Publication number Publication date
JPS6229625B2 (en) 1987-06-26

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