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:
Feb. 16, 2010
Filed:
Nov. 30, 2006
Jeffrey K. Runde, Fishers, IN (US);
John P. Kresse, Martinsville, IN (US);
Brett R. Caldwell, New Palestine, IN (US);
Andrew L. Mitchell, Indianapolis, IN (US);
Phillip F. MC Cauley, Zionsville, IN (US);
Jeffrey K. Runde, Fishers, IN (US);
John P. Kresse, Martinsville, IN (US);
Brett R. Caldwell, New Palestine, IN (US);
Andrew L. Mitchell, Indianapolis, IN (US);
Phillip F. Mc Cauley, Zionsville, IN (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
A method is provided for determining variance of actual engine torque from reported engine torque, including configuring a controller with an algorithm to calculate the ratios of current and maximum engine torque to reported torque upon the initiation of high-throttle 1-2 shift, high-throttle 2-3 shift, high-throttle torque converter lockup, and at maximum Engine Rating Torque Function for each high-throttle torque converter drive cycle. An apparatus is also provided for detecting engine torque variance in a vehicle having an engine, a throttle, and a torque converter, the apparatus comprising a controller with memory and an algorithm for calculating the maximum and current engine torque variance upon the occurrence a predetermined throttle condition, and storing the values in accessible memory, wherein the controller is configured to initiate the algorithm upon the occurrence of one of the throttle conditions, and wherein the throttle and torque converter each communicate speed signals to the controller.