Run I-Shift Explain Volvo Dual Clutch Transmission

What makes the Volvo FH series of trucks weighing up to 8 tons compete with one of the fastest sports cars in the world, the Koenigsegg One:1, and what makes Volvo Trucks the most authoritative in Europe for two consecutive years The "Quality Innovation of the Year Award" - the answer is Volvo's I-Shift dual clutch gearbox . As the first transmission with a dual-clutch system for heavy-duty vehicles, the I-Shift dual-clutch gearbox can make Volvo's truck power transmission better, leveraging the popular running I-Shift, to bring more efficiency and comfort to the driver. Driving experience.

Volvo FH truck with I-Shift dual clutch gearbox vs. Koenigse matchup

What is the working principle of I-Shift double clutch gearbox?

In fact, the majority of card-friends in the dual-clutch gearbox should be no strangers, especially those who own cars such as Volkswagen, Audi, Volvo and BYD. The DSG, S-Tronic, PowerShift, and DCT technologies possessed by the vehicle are the same as ours. The Volvo I-Shift introduced today is the same. But as the world’s first dual-clutch gearbox for heavy-duty trucks, what are the advantages of I-Shift?

I-Shift Dual Clutch Gearbox

The I-Shift dual-clutch gearbox combines the advantages of a manual gearbox and an automatic gearbox. Instead of a torque converter, the I-Shift dual-clutch gearbox uses a gearbox that includes two input shafts and two clutches. The two clutches work alternately. To achieve a gapless shift effect. The two sets of clutches respectively control odd and even gears. Specifically, before shifting gears, I-Shift has engaged the gears of the next gear in advance. After the shifting instructions are obtained, I-Shift promptly sends instructions to the engine. When the speed is increased, the previously engaged gears are quickly combined, and the first clutch is completely released, completing an upshift action, and the subsequent actions are analogized. This gear design is more timely and efficient than regular AMT (Manual Gearbox) and MT (Manual Gearbox) shifts, and there is no interruption in power transmission during the entire shift.

I-Shift double clutch gearbox structure

How I-Shift Dual Clutch Gearbox Works

How I-Shift Dual Clutch Gearbox Works

At the same time, the constantly upgrading I-Shift gearbox makes Volvo Trucks always lead the performance of similar competitive products. I-Shift double clutch gearbox adds a lot of new components to the original "I-Shift" gearbox, but The appearance is only 12cm longer than the ordinary I-Shift gearbox, which has obvious advantages in space design.

Second, I-Shift dual clutch gearbox can bring what?

Because the I-Shift double-clutch transmission has no torque converter, the power of the engine can be fully used. At the same time, the two sets of clutches work alternately, making the shift time very short and the engine's power faults very limited. It is also the reason why Volvo FH trucks weighing up to 8 tons can be compared with Koenigsegg One:1 ratio. The most direct feeling to the driver of a truck is that the vehicle is extremely quick and smooth when switching between mountains and corners, the power transmission process is almost without interruption, and the dynamic performance of the vehicle can be fully utilized, resulting in a higher fuel economy. Type and driving comfort.

The green line represents the power output during the entire shift process under the action of the I-Shift double-clutch gearbox

As one of the representatives of Volvo Truck's innovative technology, the I-Shift double-clutch gearbox also has the same cross-range shifting function as the ordinary "I-Shift" gearbox, and the fuel performance is as good as it is. These universal adaptability make the user's convenience in the actual operation process greatly improved, and Volvo Trucks won the most authoritative "Annual Quality Innovation Award" in Europe for the pioneering use of heavy-duty trucks for creating dual-clutch gearbox technology. To name it!

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