Equipments

The All-Round Intelligent Tilt System (SIBI), developed by CAF, is the first tilt system in the world to operate just at the right time. This system manages to reduce the effect of the centrifugal force on the passengers whenever the train negotiates a curve. Or, in other words:

• It reduces journey times (by 26% on the Santiago -A Coruña route).
• It improves the passengers' comfort.
• It knows the routes beforehand and eliminates the problems posed by the delayed detection of curves.
• It always works effectively, under any circumstances, whatever the track quality.

Advantages of the SIBI

The All-Round Intelligent Tilt System, developed by CAF, has a number of advantages:

• It works at just the right time because it constantly detects the train's exact position on the track and knows the track's characteristics (curves, etc.)
• It takes full advantage of the gauge.
• It ensures an optimum lean of the train's carbody, with a tilt of up to 8 degrees, depending on the track's geometry and other running conditions.
• It takes up very little room and has a minimum weight.
• It is clean and quiet, helping to improve the environment.
• It works on both electric and diesel trains, making the SIBI a versatile system.
• It reduces the need for track maintenance.

How does the SIBI work?

The SIBI allows the vehicle, by anticipating curves, to negotiate them at a higher speed, by means of additional lean of the vehicle's body with respect to the track.

• SDP: vehicle's position detecting device.
• UCB: Tilt control unit.
• Sensors: measuring the relative angle and other parameters.
• Actuators: They cause the relative carbody-truck pivoting.
• Tilt bolster: This is joined to the underframe.