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:
May. 03, 1994
Filed:
Oct. 28, 1992
James M Cummins, Dearborn, MI (US);
John I Snoke, Royal Oak, MI (US);
Gene R Burnham, Lincoln Park, MI (US);
Ford Motor Company, Dearborn, MI (US);
Abstract
An electronic engine fan control device is disclosed. The control device includes means for detecting engine coolant temperature, operation of the vehicle air conditioning load, and vehicle road speed. The control device also includes means for generating first and second temperature signals in response to engine coolant temperature. The control device further includes override signal generating means for generating first and second override signal under certain temperature, or certain load and speed conditions. The control device finally includes means for comparing the first and second temperature signals and the first and second override signals for generating a control signal to operate the vehicle fan. A method for controlling an engine fan is also disclosed including the steps of detecting engine coolant temperature, air conditioning load and road speed and generating corresponding signals. The method further includes the steps of comparing the temperature, load and speed signals to preselected values and generating a control signal to operate the engine fan.