Valve spring retainer and a valve operating mechanism
AssigneeFuji Oozx Inc.
InventorsHaruki Kobayashi, Makoto Abe, Takeshi Sassa
Life of this patent
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Abstract
A valve spring retainer is mounted to the upper end of a poppet valve via a pair of cotters in an internal combustion engine of an automobile. The valve spring retainer has an intermediate portion and an outer flange which is engaged with the upper end of a valve spring. The lower surface has a gap between the outer flange and the intermediate portion to decrease wear which is caused by engagement with the valve spring. There is also provided a valve operating mechanism which has a valve spring retainer which has a projection on the lower surface so as to prevent wear.
Claims10
A valve spring retainer in an internal combustion engine, the retainer comprising an inner portion which surround a taper bore, an intermediate portion and an outer flange in which a lower surface is engaged with an upper end of a valve spring, the lower surface of the outer flange being formed to provide a gap between the outer flange and the intermediate portion.
A valve operating mechanism for reciprocating a poppet valve in an internal combustion engine, said mechanism comprising:
- a valve spring retainer which is mounted to an end of the poppet valve and has an outer flange;
- and
- a valve spring which is provided between a lower surface of the outer flange and a cylinder head, a downward projection being partially formed on the lower surface of said outer flange and inserted in an opening between an end of an uppermost first winding and an upper surface of a second winding of the valve spring.
Dependencies are inferred from the claim text.