Gearshift system for an automobile

A gearshift system for an automobile with an automatic clutch and a transmission having four forward-gear sets which are divided into two low speed gears and two high speed gears, comprising:

• a first synchronizing device for selectively engaging a one of said low speed gears and one of said high speed gears with an output shaft of said transmission;
• a second synchronizing device for selectively engaging the other low speed gear and the other high speed gear with said output shaft;
• a first shifter means for operating said first synchronizing device;
• a second shifter means for operating said second synchronizing device;
• a select lever adapted to engage one of said first and second shifter means;
• a manually operated shift lever;
• means for transmitting the shift of said shift lever to said select lever for shifting one of said shifter means;
• an electrical select device for operating said select lever means to engage with one of said shifter means;
• switch means for producing signals representing a selection of one of said synchronizing devices;
• and
• control circuit means responsive to said signals for operating said electrical select device to select one of said synchronizing devices.