ASG, i.e. two in one
In addition to the typical manual and automatic transmissions found in today's vehicles, drivers can also choose transmissions that combine the features of both. One of them is ASG (Automated Shift Gearbox), used in both small and medium-sized cars and delivery cars.
Manual as automatic
The ASG gearbox is another step forward in the development of traditional manual transmissions. The driver can enjoy all the benefits of a manual transmission while driving. In addition, it allows you to "switch" to automatic mode, controlled via the on-board computer. In the latter case, gear changes always occur at the most optimal moments corresponding to the upper thresholds of the individual gears. Another advantage of the ASG transmission is that it is cheaper to produce than conventional automatic (planetary) transmissions. In short, the ASG transmission consists of a gear lever, a control module with a hydraulic clutch drive pump, a gearbox drive and a so-called self-adjusting clutch.
How does it work?
All those who have had the opportunity to drive cars with a typical automatic transmission should not have much difficulty in mastering the operation of the ASG transmission. In this case, the engine starts with the gear lever in the "neutral" position while depressing the brake pedal. The driver also has a choice of three other gears: "reverse", "automatic" and "manual". After selecting the last gear, you can switch independently (in the so-called sequential mode). Interestingly, in the case of the ASG transmission, there is no “parking” mode. Why? The answer is simple - it's unnecessary. As a manual transmission (with clutch), it is controlled by appropriate actuators. This means that the clutch is "closed" when the ignition is turned off. Therefore, there is no fear that the car will roll down the slope. The shift lever itself is not mechanically connected to the gearbox. It serves only to select the appropriate mode of operation, and the heart of the transmission is an electronic module that controls the operation of the transmission itself and the clutch. The latter receives signals from the central engine control unit (as well as, for example, ABS or ESP controllers) via the CAN bus. They are also directed to the display on the instrument panel, thanks to which the driver can see which mode is currently selected.
Under vigilant supervision
ASG transmissions have a special ISM (Intelligent Safety Monitoring System) safety monitoring system. What is his work based on? In fact, the system includes another controller, which, on the one hand, performs an auxiliary function in relation to the main controller of the ASG gearbox, and on the other, monitors its correct operation on an ongoing basis. While driving, ISM checks, among other things, the correct operation of the memory and software, and also monitors the operation of the ASG transmission control module, depending on the current situation. When a malfunction is detected, the auxiliary controller can react in two ways. Most often, the main controller is reset, which restores all vehicle functions (usually this operation takes a few or a few seconds). Much less often, the ISM system will not allow the vehicle to move at all. This happens, for example, as a result of a defect in the module responsible for gear shifting, and in connection with this, a danger that may arise for the driver while driving.
Module and software
Airsoft equipment is quite durable. In the event of a breakdown, the entire module is replaced (it includes: a transmission controller, an electric motor and mechanical clutch controls), and the appropriate software adapted to a specific car model is installed. The last step is to ensure that the rest of the controllers are synchronized with the ASG transfer controller, which will ensure its correct operation.
