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:
Jun. 09, 2015
Filed:
Oct. 16, 2009
Yunjun LI, West Bloomfield, MI (US);
John X. Cui, Rochester Hills, MI (US);
Steven A. Opiteck, South Lyon, MI (US);
Jonathan Darab, West Bloomfield, MI (US);
Nikolai K. Moshchuk, Grosse Pointe, MI (US);
Yunjun Li, West Bloomfield, MI (US);
John X. Cui, Rochester Hills, MI (US);
Steven A. Opiteck, South Lyon, MI (US);
Jonathan Darab, West Bloomfield, MI (US);
Nikolai K. Moshchuk, Grosse Pointe, MI (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A method for temperature compensating an air spring of an air spring suspension of a motor vehicle after engine shut-off. A desired trim height is obtained. At engine shut-off, the ambient temperature is measured and the temperature of air in the air spring determined. After a wait time (for loading/unloading), a start trim height is measured. A predicted trim height is determined for when the air in the air spring is at the ambient temperature. Finally, the volume of the air in the air spring is selectively adjusted so that when the air in the air spring arrives at the ambient temperature, the trim height will be about the desired trim height.