Abstract: A vehicle braking system includes an assistance device having a vacuum pump driven by an engine for communicating vacuum to a chamber of the assistance device. A control valve is interposed along a fluid line between the pump and the chamber. The control valve is in its first operative condition, where the inlet side of the vacuum pump communicates with the chamber, when pressure within the chamber is above a predetermined value; and is in its second operative condition, where the inlet side of the vacuum pump communicates with the atmosphere, when pressure within the chamber is below a predetermined value. In this second condition the pump intakes air from and feeds air into the atmosphere, thereby reducing the energy consumption by the engine required for driving the pump during stages where, within the chamber, there is a vacuum sufficient for the regular operation of the braking system.

Abstract: A holding device to hold a tube or cable in engagement with a bracket is provided with a structure having a seat, which is a through seat along an axis and is defined by a substantially C-shaped edge so as to have a radial opening; the structure further has a slit, which extends along a radial direction up to said seat so as to allow the bracket, in use, to be inserted into the slit and engage the seat; the holding device is further provided with a wing, which is movable between an open position, in which the seat can be accessed through the opening and a closed configuration, in which the opening is closed by the wing.

Abstract: A holding device to hold a tube or cable in engagement with a bracket is provided with a structure having a seat, which is a through seat along an axis and is defined by a substantially C-shaped edge so as to have a radial opening; the structure further has a slit, which extends along a radial direction up to said seat so as to allow the bracket, in use, to be inserted into the slit and engage the seat; the holding device is further provided with a wing, which is movable between an open position, in which the seat can be accessed through the opening and a closed configuration, in which the opening is closed by the wing.

Abstract: A vehicle braking system includes an assistance device, having a vacuum pump driven by an engine for communicating vacuum to a chamber of the assistance device. A control valve is interposed along a fluid line between the pump and the chamber. The control valve is in its first operative condition, where the inlet side of the vacuum pump communicates with the chamber, when the pressure within the chamber is above a predetermined value; and is in its second operative condition, where the inlet side of the vacuum pump communicates with the atmosphere, when pressure within the chamber is below a predetermined value. In this second condition the pump intakes air from and feeds air into the atmosphere, thereby reducing the energy consumption by the engine required for driving the pump during stages where, within the chamber there is a vacuum sufficient for the regular operation of the braking system.