What automatic transmission is more economical

What automatic transmission is more economical

About the advantages and disadvantages of alternatives to “handle” – in a nutshell.

One of the questions that first arise in the process of selecting a car for purchase, is: “automatic” or “mechanics”? And, speaking frankly, potential buyers who “handle” not interested in principle, becomes more and more writes auto. And yet the comfort and tranquility of the driver — only one of the arguments endless dispute. In an era when the cost of fuel is forcing you to plan every trip, it will not stick if the machine with “automatic” for the wallet too greedily? Go figure, if varieties of transmissions in cars with two pedals are a dime a dozen… how do they differ in terms of efficiency?

Hydrotransformer automatic transmission

Classical automatic transmission (automatic transmission) with torque Converter instead of clutch – the most comfortable. But the cost for this convenience is becoming increased fuel consumption. The reason is losses in the torque Converter. Today, the latest models got the lock of hydrotransformer immediately after the start of motion, which reduces losses.

Stepless variator CVT

Variators are, in fact, very simple in its idea device with two shafts between which it is transmitting traction belt and pulleys of variable geometry (variable length strap goes round the circumference). All they have is good, but the thrill of riding on such automatic specific. Need to get used to the fact that the motor car with the CVT for the comfort at the optimum rpm mode, hangs on a single note. But fuel economy good they are.

Robotic transmission

Best of all to save fuel help robotic transmission (RCP). It is essentially a manual transmission, which “tightened” the robot actuator. He is the driver shifts gears. Machines with robotic boxes have their own peculiarities. For example, a noticeable pause when shifting. Because the actuator must first off one gear, and then include the following. But this disadvantage has been overcome when they invented the “robot” with two clutches.

The trick is that the car is equipped with a “robot” with two clutches receives at least two transmission. One with even and one with odd gears. And when it is necessary to switch from one to another then it is not sequentially, but simultaneously. When shifting there is a partial opening one and closing the other clutch number of gears. This achieves not only switching speed, but a continuous flow of thrust at the wheels, which is important for safety.