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. 16, 2006
Filed:
Mar. 23, 2005
Mark J Duty, Goodrich, MI (US);
Michael J Prucka, Grass Lake, MI (US);
Michael a Bonne, Leonard, MI (US);
Gregory M Pannone, Rochester Hills, MI (US);
Marc H Sullivan, Southfield, MI (US);
Mark J Duty, Goodrich, MI (US);
Michael J Prucka, Grass Lake, MI (US);
Michael A Bonne, Leonard, MI (US);
Gregory M Pannone, Rochester Hills, MI (US);
Marc H Sullivan, Southfield, MI (US);
DaimlerChrysler Corporation, Auburn Hills, MI (US);
Abstract
A method for enabling a transition of a multiple-displacement engine to a different engine operating displacement includes determining a temperature measure correlated with an instantaneous engine oil temperature at an engine start-up, for example, a detected engine coolant temperature at engine start-up; determining a start-up delay period based on the temperature measure, as with a lookup table of calibratable values; and enabling a displacement mode transition no earlier than when the engine run time since start-up exceeds the start-up delay period.