Electropneumatic device with a protective valve unit

A method for outputting a brake pressure in an electronically controllable pneumatic braking system in a manner that protects against line rupture, the method comprising:

• receiving an electronic braking request signal at an electropneumatic brake pressure modulator;
• outputting a brake pressure via the electropneumatic brake pressure modulator;
• receiving the brake pressure at a protective valve unit;
• outputting the brake pressure via the protective valve unit in a first brake pressure line and a second brake pressure line, which redundantly connect a brake actuator to the protective valve unit;
• and,
• wherein the protective valve unit throttles or prevents the output of the brake pressure into the first brake pressure line in an event that leakage of the first brake pressure line is determined, and throttles or prevents the output of the brake pressure into the second brake pressure line in an event that leakage of the second brake pressure line is determined.

A commercial vehicle comprising:

• an electronically controllable pneumatic braking system including an electropneumatic device having a compressed air reservoir for providing a reservoir pressure;
• said electropneumatic device further having an electropneumatic brake pressure modulator configured to receive the reservoir pressure from said compressed air reservoir and to output a brake pressure at a brake pressure connection in a manner dependent on electronic braking request signals;
• said electropneumatic device further having a protective valve unit having a protective valve inlet, a first protective valve outlet, and a second protective valve outlet, wherein said protective valve inlet is connected to said brake pressure connection of said brake electropneumatic pressure modulator, is configured to receive the brake pressure, and is configured to provide the brake pressure at said first protective valve outlet and said second protective valve outlet;
• said electropneumatic device further having a first brake pressure line connected to said first protective valve outlet and a second brake pressure line connected to said second protective valve outlet;
• said electropneumatic device further having at least one brake actuator connected to said first brake pressure line and said second brake pressure line for receiving the brake pressure;
• and,
• said protective valve unit being configured to throttle or prevent the brake pressure output at said first protective valve outlet in an event of leakage of said first brake pressure line and to throttle or prevent the brake pressure output at said second protective valve outlet in an event of leakage of said second brake pressure line.