Patent ID: 7637844
Filing Date: 2009-12-29
Classification: F16H,Y10S,Y10T

Abstract:
1. An automatic transmission control system comprising: a disengagement malfunction determining section configured to determine a disengagement malfunction with a first frictional engaging element from among a plurality of frictional engaging elements of an automatic transmission in which the frictional engaging elements are selectively engaged and disengaged to change a rotational speed of a main power source; and a disengagement malfunction preventing section configured to prevent disengagement malfunction of a second frictional engaging element from among the frictional engaging elements of the automatic transmission by lowering the rotational speed of the main power source to a level which will prevent the disengagement malfunction in the second frictional engaging element, when the disengagement malfunction determining section determines that the disengagement malfunction of the first frictional engaging element exists while the automatic transmission is in non-running range.