Measuring and testing – Vehicle chassis – Steering
Patent
1992-06-05
1994-05-17
Myracle, Jerry W.
Measuring and testing
Vehicle chassis
Steering
384126, G01M 1900
Patent
active
053117700
ABSTRACT:
A frictionless bearing chassis dynamometer including a pair of laterally spaced-apart rolls adapted to be engaged and driven by a pair of wheels of a vehicle. A power exchange unit is disposed between the rolls and includes an input shaft fixedly coupled to each of the rolls. The input shaft is supported at its opposite ends by bearing assemblies which each include inner and outer annular bearings and an inner/outer race member disposed therebetween, which forms an outer race for the inner annular bearing and an inner race for the outer annular bearing. Independent bearing motor drive assemblies are coupled to each of the inner/outer race members by independently drivable bearing drive hubs, pulleys and drive belts. Independent bearing motor drive assemblies drive the bearing drive hubs at speeds slightly above and below the rotational speed of the input shaft, to thereby drive the inner/outer race members of each bearing assembly at speeds either slightly below or slightly above the rotational speed of the input shaft. In a preferred embodiment one of the bearing drive hubs is driven slower than the speed of the input shaft while the other bearing drive hub is driven at a speed slightly faster than the input shaft, and the speeds at which the bearing drive hubs are caused to rotate are periodically swapped such that each drive hub is alternately driven at speeds slightly above and below the rotational speed of the input shaft, to thereby cancel frictional forces normally introduced by each of the inner annular bearings.
REFERENCES:
patent: 4077255 (1978-03-01), Murakami
patent: 5154076 (1992-10-01), Wilson et al.
Horiba Instruments Incorporated
Myracle Jerry W.
LandOfFree
Frictionless bearing chassis dynamometer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Frictionless bearing chassis dynamometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frictionless bearing chassis dynamometer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-869384