Valve system for OHV-type four-cylinder internal combustion engine

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EP 1 207 274 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	19.03.2003 Bulletin 2003/12

(43)	Date of publication A2:
	22.05.2002 Bulletin 2002/21

(21)	Application number: 01121464.0

(22)	Date of filing: 07.09.2001

(51)	International Patent Classification (IPC)⁷: F01L 1/04, F01L 1/14, F01L 1/18, F01L 1/02, F01L 1/26, F01L 1/12, F02B 75/22, F02B 75/24

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
	Designated Extension States:
	AL LT LV MK RO SI

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Priority:

16.11.2000 JP 2000349705

(71)	Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHA
	Minato-ku Tokyo (JP)

(72)	Inventors:
	Matsuda, Minoru, K.K. Honda Gijutsu Kenkyusho Wako-shi, Saitama (JP) Sanada, Makoto, K.K. Honda Gijutsu Kenkyusho Wako-shi, Saitama (JP)

(74)	Representative: Liska, Horst, Dr.-Ing. et al
	Weickmann & Weickmann Patentanwälte Postfach 86 08 20 81635 München 81635 München (DE)

(54)	Valve system for OHV-type four-cylinder internal combustion engine

(57) Problem: In a valve system for OHV-type horizontal opposed type four-cycle internal combustion engine, to contrive large reduction of the weight and size of piston heads at which intake and exhaust valves of the internal combustion engine are disposed.
Means of Solution: Valve camshafts (26i, 26e) are provided at crankcase portions (2L, 2R) for supporting a crankshaft(1), of left and right cylinder banks(CB1, CB2) disposed on opposite sides of the crankshaft(1). Intake and exhaust valves (14, 15)provided at cylinder heads (4L, 4R) are opened and closed by pull rods (20i, 20e) operated by the valve camshafts (26i, 26e).

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