Testing device and method for testing a drive train or components within a marine propulsion system having at least one driven shaft
AssigneeAB Volvo Penta
InventorDonald A. Carlson, III
Life of this patent
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Abstract
A testing device for testing a drive train or components within a marine propulsion system is provided and includes a first disk with a plurality of first disk depressions that faces a second disk with a plurality of second disk depressions. The first disk and the second disk are secured relative to each other so that they define a space, and a seal at outer edges of the disks is in fluid communication with the space. One of the first disk and the second disk is secured to a driven shaft. Upon rotation of the driven shaft, a load is produced due to shearing of fluid between the disks, yet no thrust is produced.
Claims20
A testing device for testing a drive train or components within a marine propulsion system having at least one driven shaft, comprising:
- a first disk comprising a first disk outer side and a first disk inner side, a first hole extending through a center of the first disk from the first disk outer side to the first inner side, and a plurality of first disk depressions extending radially toward a first radially outer edge of the first disk;
- a second disk comprising a second disk outer side and a second disk inner side, a second hole extending through a center of the second disk from the second disk outer side to the second inner side, and a plurality of second disk depressions extending radially toward a second radially outer edge of the second disk;
- and
- means for securing the first disk and the second disk relative to each other such that the first disk inner side faces the second disk inner side and the first disk inner side and the second disk inner side define a space and one of the first disk and the second disk is secured to a respective one driven shaft of the at least one driven shaft,
- wherein a first portion of the first disk inner side radially inward of the first radially outer edge and a second portion of the second disk inner side radially inward of the second radially outer edge define a seal in fluid communication with the space.
A method for testing a drive train or components within a marine propulsion system having at least one driven shaft, comprising:
- securing a first disk on one output shaft of the at least one driven shaft, the first disk comprising a first disk outer side and a first disk inner side, and a plurality of first disk depressions extending radially toward a first radially outer edge of the first disk on the first disk inner side;
- positioning a second disk comprising a second disk outer side and a second disk inner side relative to the first disk, the first disk and the second disk being coaxial, the second disk comprising a plurality of second disk depressions extending radially toward a second radially outer edge of the second disk on the second disk inner side;
- securing the first disk and the second disk relative to each other such that the first disk inner side faces the second disk inner side and the first disk inner side and the second disk inner side define a space, and such that a first portion of the first disk inner side radially inward of the first radially outer edge and a second portion of the second disk inner side radially inward of the second radially outer edge define a seal in fluid communication with the space;
- turning the one output shaft in a first rotational direction;
- causing fluid to enter into a central region of the space while turning the output shaft in the first rotational direction;
- and
- draining fluid that is caused to enter into the space through the seal.
The method as set forth in claim 19, comprising turning the radially inner output shaft in the second rotational direction while turning the radially outer output shaft in the first rotational direction.
Dependencies are inferred from the claim text.