METHOD OF CONTROLLING A TRANSMISSION OF A VEHICLE IN TWO DIFFERENT MODES ACCORDING TO REQUIREMENTS FOR POWER AND ECONOMY

摘要

ABSTRACT OF THE DISCLOSUREA method of controlling a transmission of a vehicle selectively eitherin a first mode of operation in such a manner that the transmission isshifted among a plurality of speed stages according to a first shift pattern,or in a second mode of operation in such a manner that the transmission isshifted among those speed stages which lacks at least one intermediatespeed stage in the above-mentioned plurality of speed stages according to asecond shift pattern, according selection between the above two modes ofoperation. On-Off controlling of a lockup clutch is also changed in twomodes according to the selection between the two modes of speed stageshifting, when it is incorporated in the transmission.