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US 2021/0199028 A1Published application
Lost motion mechanism, valve gear and engine
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorYasuo OKAMOTO
Life of this patent
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Abstract
A valve gear includes a lost motion mechanism including a lost motion spring. A pillar is inserted into the lost motion spring, and a seat supports a lower end portion of the lost motion spring. A protrusion is provided on an opposite side of the seat from the lost motion spring. When viewed from an axial direction of the lost motion mechanism, the protrusion does not project out of the seat. By fitting the protrusion into the recess of the cylinder head, the seat, i.e., the lost motion mechanism is attached to the cylinder head.
Claims11
A lost motion mechanism for an engine, the lost motion mechanism comprising:
- a lost motion spring;
- a regulator extending in an axial direction of the lost motion spring to limit bending of the lost motion spring;
- a support extending radially of the lost motion spring from the regulator to make contact with an end portion of the lost motion spring;
- and
- an attaching portion including at least a protrusion or a recess provided on the support to attach the support to the engine;
- wherein
- the attaching portion does not project out of the support when viewed from the axial direction.
4 more elements
Dependencies are inferred from the claim text.