US 12,049,209 B2 · Valve arrangement of a towing vehicle for controlling a pneumatic brake system of a trailer vehicle and a method for controlling it

Abstract

A valve arrangement (14.2) of a tractor vehicle (2) for controlling a pneumatic brake system of a trailer vehicle (4) includes a trailer control valve (16) with a reservoir pressure input (p11) for the introduction of reservoir compressed air and a reservoir pressure output (p21) for the controlled discharge of reservoir compressed air. The reservoir pressure output is pneumatically connected to a “reservoir” coupling head (6) of the tractor vehicle. A shut-off and ventilation valve (98) is arranged in a reservoir pressure line (48) upstream of the “reservoir” coupling head. Before connecting an associated coupling head of the trailer vehicle (4) to the “reservoir” coupling head of the tractor vehicle, the feed of reservoir compressed air to the “reservoir” coupling head can be shut off to ventilate the “reservoir” coupling head. After reconnecting the associated coupling head, the “reservoir” coupling head can be charged again.

Claims24

Dependent claims

A valve arrangement for controlling a pneumatic brake system of a trailer vehicle coupled to a tractor vehicle having a reservoir coupling head, the valve arrangement comprising:

a trailer control valve with a reservoir pressure input for introducing reservoir compressed air;
a reservoir pressure output for a controlled discharge of reservoir compressed air, the reservoir pressure output being pneumatically connected to the reservoir coupling head of the tractor vehicle;
and
a shut-off and ventilation valve arranged in a reservoir pressure line pneumatically upstream of the reservoir coupling head;
wherein the shut-off and ventilation valve is configured to shut off a feed of reservoir compressed air to the reservoir coupling head and to ventilate the reservoir coupling head before an associated coupling head of the trailer vehicle is connected to the reservoir coupling head of the tractor vehicle,
and wherein the shut-off and ventilation valve is configured to allow the reservoir coupling head to be charged again with reservoir compressed air after connecting the associated coupling head of the trailer vehicle to the reservoir coupling head of the tractor vehicle.

3 more elements

A method for controlling a pneumatic brake system of a trailer vehicle by means of a valve arrangement of a tractor vehicle, which has a mechanically or electronic controllable trailer control valve, via which reservoir compressed air that is introduced into the valve arrangement via a reservoir pressure input can be conducted via a reservoir pressure output to a reservoir coupling head of the tractor vehicle, the method comprising the following steps:

before connecting an associated coupling head of the trailer vehicle to the reservoir coupling head of the tractor vehicle, shutting off a supply of reservoir compressed air to the reservoir coupling head of the tractor vehicle and ventilating the reservoir coupling head, and
after connecting the associated coupling head of the trailer vehicle to the reservoir coupling head of the tractor vehicle, enabling the supply of the reservoir compressed air to the reservoir coupling head and charging the reservoir coupling head again with reservoir compressed air.

Dependencies are inferred from the claim text.

Valve arrangement of a towing vehicle for controlling a pneumatic brake system of a trailer vehicle and a method for controlling it

Life of this patent

Valve arrangement of a towing vehicle for controlling a pneumatic brake system of a trailer vehicle and a method for controlling it

Life of this patent

Abstract

Claims24