The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 1998
Filed:
Mar. 01, 1996
Severino D'Angelo, Laguna Beach, CA (US);
Snap-on Technologies, Inc., Lincolnshire, IL (US);
Abstract
A chassis dynamometer for simulating the road load and inertia of a vehicle comprised of two axially-movable roller assemblies and a track to guide their axial movement is described. The two independent roller assemblies are free to slide right or left along a track fixed to the lab floor during the vehicle alignment phase that precedes actual testing. Each of said independent roller assemblies includes one or more rollers to engage the driving tire of the vehicle. Said rollers are mechanically coupled to a power absorber and flywheel for simulating the road load and/or inertia of the vehicle. A control system responding to signals from the speed and torque sensors, using a torque split control method, electrically synchronizes the speeds of the two separate assemblies while simulating the selected road load and inertia of the vehicle. Alignment of the vehicle on the dynamometer and positioning of the roller assemblies squarely under the driving tires is achieved by forward and/or reverse rotation of the rollers. A manual or automatic mechanisms locks the individual roller assemblies to the floor track.