Patent ID: 6109126
Filing Date: 2000-08-29
Classification: F16H,Y10S,Y10T

Abstract:
A compound transmission for a vehicle comprising:a main section providing a first plurality of gear ratios and a neutral gear ratio;a manually shifted auxiliary section connected to said main section and providing a second plurality of gear ratios;a manually operable switch for generating a signal when it is desired to shift among said plurality of gear ratios provided by said auxiliary section;a first sensor for generating a signal when said main section is in said neutral gear ratio;a second sensor for generating a signal that is representative of the speed of the vehicle; anda controller responsive to said switch, said first sensor, and said second sensor for controlling the operation of said auxiliary section, said controller effecting a shift among said plurality of gear ratios provided by said auxiliary section when said signal is generated by said switch, said signal is generated by said first sensor, and said signal from said second sensor is within a predetermined range.