The shift lever of the car, if it is also a manual car, although there are differences in the equipment position, all are now almost H pattern. However, there is a “sequential” type in which the gear is shifted only by movement in the front-back direction. Where is the difference?
Normal H pattern mission
Shift patterns called “H patterns” are used in some MTs (manual transmissions) or semi-ATs that drive MTs with hydraulic pressure. By operating the shift lever for each gear position arranged on the H pattern, the gears will enter, so it can not be seen from the driver’s seat, but inside the transmission with rods and wires extending from just below the shift lever toward the mission It has a complicated link structure that moves the gears.
Both the “floor shift” beside the driver’s seat, the “column shift” in which the shift lever grew from the side of the steering wheel, and the “instrument shift” that grew out of the panel between the floor and the column have the vertical H pattern. In cars (such as Subaru 360) there was also a horizontal H pattern.
Sequential mission
The “sequential mission” is a paddle shift that can be operated with the left and right switches without operating the shift lever in the front-rear direction or with the left and right switches without releasing the handle. There are many “sequential dogs” to facilitate shift changes, but there are also sequential missions using gears that use the normal synchromesh mechanism.
It is not suitable for use on general public roads at all, since it is always one-step operation such as 2 → 3 → 4. However, since the speed of the shift lever or paddle operation does not differ depending on the gear like the H pattern shift (the shift distance of the shift lever to the next gear differs), it is necessary to make stable gear changes in races etc. Is very suitable.
Especially in the case of H pattern missions, while “ gear skipping ” can be performed to skip gears during shift changes, there is a risk of engine blow due to overspeed due to shift mistakes and risk of mission damage due to damage to synchromesh.
Recently is increasing “Sequential shifter”
In addition to “sequential missions” for races and competitions, recently, 2-pedal MTs and semi-ATs that use sequential shift operation are increasing.
In missions such as DCT and AGS that automatically operate shift changes by hydraulic drive, they are either sequential shifters or paddle shifts, with some exceptions. It has been. In particular, multi-stage ATs are increasingly connected directly to each gear without a torque converter, so it can be said that the importance of manual operation has increased.
As in the past, the number of cars that can enjoy the “ joy of shift change ” by linking the shift lever and accelerator, brake, clutch with MT has been reduced, but instead the car can taste the racer feeling by sequential shifter and paddle shift Is increasing.
