Automatic compression release mechanism

Details Automatic compression release mechanism Automatic compression release mechanism

F - Mech Eng,Light,Heat,Weapons

01

L

F01L 13/08 (2006.01)

Patent

CA 2492894

An automatic compression release mechanism for implementation in an internal combustion engine, and a method of assembling such a mechanism, are disclosed. The mechanism includes a camshaft assembly including a cam gear (320), a cam lobe (360) with a notch positioned along a first side of the gear (320), a tube (550) passing through the gear (320) and aligned with the notch (580), and a support on a second side of the gear. The mechanism additionally includes an arm (510) including a weight (530) and shaft (540) coupled to one another, where an end of the shaft (540) includes a recess (620), and where the shaft is rotatably positioned within the tube and the end of the shaft with the recess extends into the notch. The mechanism further includes a retaining member positioned onto the support so that the weight is positioned between the retaining member and the tube and retained with respect to the gear.

L'invention concerne un mécanisme automatique de détente destiné à un moteur thermique ainsi qu'une méthode de montage d'un tel mécanisme. Ce mécanisme comprend un ensemble arbre à came constitué par un pignon de came (320), un lobe de came (360) présentant une encoche sur un premier côté du pignon (320), un tube (550) traversant le pignon (320) et aligné sur l'encoche (580), et un support sur un second côté du pignon. De plus, le mécanisme comprend un bras (510) avec une masselotte (530) solidaire d'un axe (540). L'axe (540) présente à son extrémité un évidement (620) et est monté rotatif à l'intérieur du tube, l'extrémité venant se loger dans l'encoche. Le mécanisme comprend en outre un élément de retenue situé sur le support de telle sorte que la masselotte est positionnée entre l'élément de retenue et le tube en étant maintenue par rapport au pignon.

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