Balance gear with a shot damper
First Claim
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1. An engine system comprising:
- a crankshaft gear coupled to a crankshaft of an engine for rotation therewith;
a balance gear coupled to a balance shaft for rotation therewith, the balance gear formed by a disc having first and second opposite sides extending radially outwardly to a circumferential edge defining a series of teeth extending between the first and second opposite sides, the series of teeth of the disc of the balance gear in meshed engagement with the crankshaft gear, a first sector of the disc having a first aperture therethrough, and a second opposite sector of the disc having a second aperture therethrough, each of the first and second apertures intersecting the first and second opposite sides; and
a damper having a container enclosing a plurality of particles therein, the container received into the second aperture and extending across the disc.
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Abstract
An engine system has a balance gear coupled to a balance shaft. The balance gear is formed by a disc having first and second opposite sides extending radially outwardly to a circumferential edge defining a series of teeth, with a first sector of the disc having a first aperture therethrough, and a second opposite sector of the disc having a second aperture therethrough. A damper is positioned within the second aperture and extends across the disc. The damper has a container enclosing a plurality of particles therein. Opposed ends of the container are outboard of the first and second sides of the disc. A method of forming the balance gear is also provided.
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Citations
20 Claims
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1. An engine system comprising:
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a crankshaft gear coupled to a crankshaft of an engine for rotation therewith; a balance gear coupled to a balance shaft for rotation therewith, the balance gear formed by a disc having first and second opposite sides extending radially outwardly to a circumferential edge defining a series of teeth extending between the first and second opposite sides, the series of teeth of the disc of the balance gear in meshed engagement with the crankshaft gear, a first sector of the disc having a first aperture therethrough, and a second opposite sector of the disc having a second aperture therethrough, each of the first and second apertures intersecting the first and second opposite sides; and a damper having a container enclosing a plurality of particles therein, the container received into the second aperture and extending across the disc. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A gear for a vehicle shaft comprising:
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a disc having first and second opposite sides extending radially outwardly to an edge defining a series of teeth, the disc having a first sector defining an aperture therethrough, the aperture intersecting the first and second opposite sides of the disc; and a closed container received into the aperture and containing particles, wherein opposed ends of the container are outboard of the first and second sides of the disc. - View Dependent Claims (14, 15, 16)
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17. A method of forming a balance gear for a vehicle balance shaft comprising:
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forming a disc having first and second opposite sides extending radially outwardly to a circumferential edge; forming a series of teeth on the circumferential edge; forming an aperture through the disc adjacent to the circumferential edge, the aperture intersecting the first and second opposite sides; positioning a damper housing into the aperture such that the damper housing is received into the aperture, the damper housing having an interior region defined by a circumferential side wall extending from an end wall to an edge region, the side wall contacting a wall of the aperture; providing a plurality of shot particles into the interior region of the damper housing to a specified fill fraction; and attaching a cover plate to the edge region of the side wall of the damper housing to enclose the interior region, retain the plurality of shot particles therein, and form a damper in the balance gear. - View Dependent Claims (18, 19, 20)
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Specification