Amt gearbox energy storage device disassembly and assembly

What is automatic manual transmission (AMT)?

In a automated manual transmission (AMT) or automatic transmission (AT), both the decision to perform a gear shift and the actuation of clutch/gears are done automatically without the intervention of the driver. The clutch and gear assemblies have electrohydraulic or electric actuators controlled by electronic control modules (ECM).

How does an Amt work?

On an AMT, there is no more clutch pedal and the gear shift lever is replaced by program selection lever. The actuation of the clutch and gears is done with electrohydraulic of electric actuators, controlled through electronic signals coming from an electronic control module.

What is the difference between AMT and at?

AMTs have constant mesh gears, like a MT, while AT have planetary (epicyclic) gear assemblies. From the software (function) point of view, both AMTs and ATs, can perform automatic or manual (driver decision) gear shifts. In this article we are going to focus on automated manual transmissions (AMT).

What is the biggest challenge for an Amt unit?

The biggest challenge for any AMT unit is how it fares in the longrun. Since the AMT is designed to operate on a normal transmission, it is known that as transmissions age, we encounter various issues, like clutch getting harder, gears might become difficult to engage, clutch wear would change the bite point, etc.

What happens if a transmission gear is disengaged during gear shifting?

During gear shifting, the output torque of the AMT driveline is interrupted temporarily. The torque interruption, which happens when the drive shaft gear moves towards the target gear and the transmission gear is disengaged, causes the driving comfort of the vehicle to deteriorate during gear shifting.

How a clutchless Amt works?

Though these notes point out that the gear-shifting operation of clutchless AMT requires the power motor with the capabilities of fast mode-switching (between torque output, speed control and free mode) and high-precise speed regulation, the relating control methodology or technique is not discussed or analyzed in their articles.