JPS572409A - Cam shaft supporting structure for four-valve and two-overhead cam shaft type internal combustion engine - Google Patents

Cam shaft supporting structure for four-valve and two-overhead cam shaft type internal combustion engine

Info

Publication number
JPS572409A
JPS572409A JP7678980A JP7678980A JPS572409A JP S572409 A JPS572409 A JP S572409A JP 7678980 A JP7678980 A JP 7678980A JP 7678980 A JP7678980 A JP 7678980A JP S572409 A JPS572409 A JP S572409A
Authority
JP
Japan
Prior art keywords
cam shaft
valve
combustion engine
internal combustion
type internal
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
JP7678980A
Other languages
Japanese (ja)
Inventor
Masaaki Yoshikawa
Takeshi Koyanazu
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.)
Yamaha Motor Co Ltd
Original Assignee
Yamaha 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 Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Priority to JP7678980A priority Critical patent/JPS572409A/en
Publication of JPS572409A publication Critical patent/JPS572409A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To provide at the same time decrease an appropriate angle of valve and form of combustion chamber, and the number of parts, by reducing the interval between cam shafts.
CONSTITUTION: Bearings for cam shafts 20, 40 are provided berween cams 22 and 24 as well as cams 42 and 44 on each cam shaft 20, 40 of a four-valve and two- overhead cam shaft type internal combustion engine, which is directly operated by cams 22, 24, 42, 44 with two each air intake, exhaust valves 16, 18 for each cylinder installed on said two cam shafts 20, 40.
COPYRIGHT: (C)1982,JPO&Japio
JP7678980A 1980-06-06 1980-06-06 Cam shaft supporting structure for four-valve and two-overhead cam shaft type internal combustion engine Pending JPS572409A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7678980A JPS572409A (en) 1980-06-06 1980-06-06 Cam shaft supporting structure for four-valve and two-overhead cam shaft type internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7678980A JPS572409A (en) 1980-06-06 1980-06-06 Cam shaft supporting structure for four-valve and two-overhead cam shaft type internal combustion engine

Publications (1)

Publication Number Publication Date
JPS572409A true JPS572409A (en) 1982-01-07

Family

ID=13615379

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7678980A Pending JPS572409A (en) 1980-06-06 1980-06-06 Cam shaft supporting structure for four-valve and two-overhead cam shaft type internal combustion engine

Country Status (1)

Country Link
JP (1) JPS572409A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58150010A (en) * 1982-03-03 1983-09-06 Yamaha Motor Co Ltd Cam shaft support mechanism of dohc engine for motorcycle
JPS59181945A (en) * 1983-03-31 1984-10-16 Matsushita Electric Ind Co Ltd Manufacture of stationary laminated core
JPS6098744U (en) * 1983-09-29 1985-07-05 本田技研工業株式会社 Cylinder head of DOHC type internal combustion engine
US4534325A (en) * 1983-07-27 1985-08-13 Mazda Motor Corporation Cam shaft holding system for internal combustion engine
US4632073A (en) * 1984-05-16 1986-12-30 Yamaha Hatsudoki Kabushiki Kaisha Camshaft mounting mechanism for DOHC engine of motorcyle
US4681069A (en) * 1984-09-21 1987-07-21 Nissan Motor Co., Ltd. Overhead camshaft engine
JPH03189359A (en) * 1990-08-10 1991-08-19 Yamaha Motor Co Ltd Dohc engine
JPH03189306A (en) * 1990-08-10 1991-08-19 Yamaha Motor Co Ltd Valve system for double overhead camshaft engine
JPH03189360A (en) * 1990-08-10 1991-08-19 Yamaha Motor Co Ltd Dohc engine

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58150010A (en) * 1982-03-03 1983-09-06 Yamaha Motor Co Ltd Cam shaft support mechanism of dohc engine for motorcycle
JPH0522043B2 (en) * 1982-03-03 1993-03-26 Yamaha Motor Co Ltd
JPS59181945A (en) * 1983-03-31 1984-10-16 Matsushita Electric Ind Co Ltd Manufacture of stationary laminated core
US4534325A (en) * 1983-07-27 1985-08-13 Mazda Motor Corporation Cam shaft holding system for internal combustion engine
JPH0221568Y2 (en) * 1983-09-29 1990-06-11
JPS6098744U (en) * 1983-09-29 1985-07-05 本田技研工業株式会社 Cylinder head of DOHC type internal combustion engine
US4632073A (en) * 1984-05-16 1986-12-30 Yamaha Hatsudoki Kabushiki Kaisha Camshaft mounting mechanism for DOHC engine of motorcyle
US4681069A (en) * 1984-09-21 1987-07-21 Nissan Motor Co., Ltd. Overhead camshaft engine
JPH03189359A (en) * 1990-08-10 1991-08-19 Yamaha Motor Co Ltd Dohc engine
JPH03189306A (en) * 1990-08-10 1991-08-19 Yamaha Motor Co Ltd Valve system for double overhead camshaft engine
JPH03189360A (en) * 1990-08-10 1991-08-19 Yamaha Motor Co Ltd Dohc engine
JPH0451642B2 (en) * 1990-08-10 1992-08-19 Yamaha Motor Co Ltd
JPH0534506B2 (en) * 1990-08-10 1993-05-24 Yamaha Motor Co Ltd
JPH0631565B2 (en) * 1990-08-10 1994-04-27 ヤマハ発動機株式会社 DOHC engine

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