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:
Oct. 18, 1988
Filed:
Aug. 10, 1987
Robert S Rudolph, Osceola, IN (US);
Thomas J Hoffman, Granger, IN (US);
Jerry L Cage, Granger, IN (US);
Michael E Gatt, Osceola, IN (US);
Allied-Signal Inc., Morristown, NJ (US);
Abstract
A vehicle braking system equipped with an adaptive braking system with traction control to control drive wheel slip during vehicle acceleration includes a conventional vacuum brake booster having a vacuum chamber normally connected to engine manifold vacuum and an atmospheric chamber connected to the vacuum chamber when the brakes are released but which is connected to atmosphere when a brake application is effected. The traction control system includes a control unit which actuates a solenoid valve under wheel slip conditions during vehicle acceleration to cut off communication between the vacuum chamber and engine manifold vacuum. The traction control system also cuts off communication between the vacuum chamber and the atmospheric chamber and initiates communication of the atmospheric chamber directly to engine manifold vacuum, thereby effecting a brake application proportional to engine manifold vacuum, which varies as a function of engine power.