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:
Aug. 20, 2013
Filed:
Jul. 11, 2007
Byungjun Kim, Gunpo-si, KR;
Taekyoung Lee, Suwon-si, KR;
Byungjun Kim, Gunpo-si, KR;
Taekyoung Lee, Suwon-si, KR;
Kefico Corporation, , KR;
Abstract
The present invention relates to a method of controlling a shift of an automatic transmission of a four-wheel low-speed drive vehicle, in which when a four-wheel low-speed drive mode is selected, it is possible to accomplish an appropriate operational condition for the four-wheel low-speed drive mode that can realize a variety of operational conditions of the vehicle while effectively limiting additional use of memories for storing shift patterns, by controlling a shift point of the automatic transmission to be appropriate for the four-wheel low-speed drive mode with appropriate change in a basic shift pattern according to a basic operational condition to consider together with the four-wheel low-speed drive mode without separately using a specific shift pattern and by controlling the apply and release parts to be appropriate for the control of the shift point, thereby it is possible to ensure a stable and smooth shift.