JPS6477709A - Valve device for engine - Google Patents

Valve device for engine

Info

Publication number
JPS6477709A
JPS6477709A JP23454887A JP23454887A JPS6477709A JP S6477709 A JPS6477709 A JP S6477709A JP 23454887 A JP23454887 A JP 23454887A JP 23454887 A JP23454887 A JP 23454887A JP S6477709 A JPS6477709 A JP S6477709A
Authority
JP
Japan
Prior art keywords
valve
spring
valve spring
clearance gap
engine
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
JP23454887A
Other languages
Japanese (ja)
Inventor
Toru Kurisu
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.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
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 Mazda Motor Corp filed Critical Mazda Motor Corp
Priority to JP23454887A priority Critical patent/JPS6477709A/en
Publication of JPS6477709A publication Critical patent/JPS6477709A/en
Pending legal-status Critical Current

Links

Landscapes

  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

PURPOSE:To attempt the improvement in resonance frequency and the like by setting a clearance gap between spring wires in such a way as to be wider in the upper end side thereof so that said gap will never be zero at the time of the maximum compression in a valve spring the upper and lower ends of which abut with a valve stem and a cylinder head respectively. CONSTITUTION:An engine is provided with a valve spring 22 arranged around a valve stem 18 at the upper side of a cylinder head 10. And the valve spring 22 energizes a valve body 20 to the direction closing the valve at all time so as to interrupt a passage 14 to a combustion chamber 12. In this case, a clearance gap L1 between spring wires at the upper side of the valve spring 22 is so formed as to be wider than the clearance gap L2 of the lower side thereof so that the clearance gap will never be zero at the time of the maximum compression of the valve spring 22. This constitution makes the resonance frequency of the whole of the valve spring 22 high so as to allow the rotation limit of the engine to be high, thereby lowering the natural frequency of the spring with the mass distribution to the upper side lowered.
JP23454887A 1987-09-18 1987-09-18 Valve device for engine Pending JPS6477709A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23454887A JPS6477709A (en) 1987-09-18 1987-09-18 Valve device for engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23454887A JPS6477709A (en) 1987-09-18 1987-09-18 Valve device for engine

Publications (1)

Publication Number Publication Date
JPS6477709A true JPS6477709A (en) 1989-03-23

Family

ID=16972749

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23454887A Pending JPS6477709A (en) 1987-09-18 1987-09-18 Valve device for engine

Country Status (1)

Country Link
JP (1) JPS6477709A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980079212A (en) * 1997-04-30 1998-11-25 토니 헬샴 Main control valve of hydraulic equipment for heavy equipment
KR20050032662A (en) * 2003-10-02 2005-04-08 현대자동차주식회사 Valve spring structure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63109B2 (en) * 1981-03-20 1988-01-05 Ricoh Elemex Corp
JPS6342809B2 (en) * 1983-05-23 1988-08-25 Fujitsu Ltd

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63109B2 (en) * 1981-03-20 1988-01-05 Ricoh Elemex Corp
JPS6342809B2 (en) * 1983-05-23 1988-08-25 Fujitsu Ltd

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980079212A (en) * 1997-04-30 1998-11-25 토니 헬샴 Main control valve of hydraulic equipment for heavy equipment
KR20050032662A (en) * 2003-10-02 2005-04-08 현대자동차주식회사 Valve spring structure

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