Twin clutch transmission with gear hit noise suppression system

A twin clutch transmission for use with a prime mover, comprising:

• a first group of gears which are operable to select one of a first group of speed gearings with the aid of a first selection mechanism;
• a second group of gears which are operable to select one of a second group of speed gearings with the aid of a second selection mechanism;
• a first automatic clutch which is incorporated with said first group of gears to establish the selected one of said first group of gearings when engaged;
• a second automatic clutch which is incorporated with said second group of gears to establish the selected one of said second group of gearings when engaged;
• and
• a control unit which controls said first and second selection mechanisms and said first and second automatic clutches,
• said control unit being configured to carry out:
• establishing a condition wherein both said first and second automatic clutches are in their engaged conditions and wherein one of said first and second groups of gears is operated to select a certain speed gearing with the aid of the corresponding selection mechanism while leaving the other of said first and second groups of gears in a neutral condition with the aid of the corresponding selection mechanism;
• and
• releasing the engaged condition of the automatic clutch incorporated with the other of said first and second groups of gears when the other of said first and second groups of gears is in a critical condition to induce a gear hit noise.