Transmission

A transmission comprising

• a first input shaft (112) and a second input shaft (113) disposed coaxially with each other,
• a first clutch (Co) for transmitting the driving force of an engine (E) to the first input shaft (112),
• a second clutch (Ce) for transmitting the driving force of the engine (E) to the second input shaft (113),
• an output shaft (115) disposed in parallel to the first and second input shafts (112, 113),
• reversing means (145:164) for transmitting the driving force by reversing the rotational direction between the first input shaft (112) and the second input shaft (113),
• an input gear (120, 121:
• 151, 152) provided on one of the first and second input shafts (112, 113), and
• an output gear (126, 127:
• 155, 156) provided on the output shaft (115) and always operatively connected to the input gear (120, 121:
• 151, 152),
• when establishing a predetermined forward side gear position, the driving force of the engine (E) being transmitted to a driven wheel (W) via one of the first and second clutches (Co, Ce), the input gear (120, 121:
• 151, 152) provided on one of the first and second input shafts (112, 113), and the output gear (126, 127:
• 155, 156) provided on the output shaft (115), and when establishing a reverse gear position, the driving force of the engine (E) being transmitted to the driven wheel (W) via the other of the first and second clutches (Co, Ce), the other of the first and second input shafts (112, 113), the reversing means (145:
• 164), the input gear (120, 121:
• 151, 152) provided on said on the first and second input shafts (112, 113), and the output gear (126, 127:
• 155, 156) provided on the output shaft (115),
• an idle shaft (116) and a countershaft (114) are disposed in parallel to the first and second input shafts (112, 113), said other of the first and second input shafts (112, 113) is always operatively connected to the countershaft (114) via a transmission gear train (117, 119, 118), an intermediate gear (123, 124) provided on the countershaft (114) is always operatively connected to the output gear (126, 127), and
• when establishing a forward side gear position, the driving force of the engine (E) is transmitted to the driven wheel (W) via said other of the first and second clutches (Co, Ce), said other of the first and second input shafts (112, 113), the transmission gear train (117, 119, 118), the intermediate gear (123, 124), and the output gear (126, 127).