US 10,927,801 B2 · Valve device and fuel filter module

Abstract

A valve device for a fuel filter module has a first fluid channel through which fuel flows only in recirculation mode of the fuel filter module and a second fluid channel through which fuel flows only outside of the recirculation mode. The first fluid channel extends inside the second fluid channel. The first and second fluid channels are coaxial to each other. A fuel filter module switchable into recirculation mode and out of recirculation mode is provided with a control valve that has a valve bore and a valve device arranged in the valve bore, wherein the valve device has a first fluid channel through which fuel flows only in recirculation mode and a second fluid channel through which fuel flows only outside of the recirculation mode. The first fluid channel extends inside the second fluid channel, and the first and second fluid channels are coaxial to each other.

Claims20

Dependent claims

A valve device for a fuel filter module, the valve device comprising:

a first fluid channel through which fuel flows only in a recirculation mode of the fuel filter module;
a second fluid channel through which fuel flows only outside of the recirculation mode of the fuel filter module;
wherein the first fluid channel extends inside the second fluid channel;
wherein the first fluid channel and the second fluid channel are arranged coaxially to each other;
wherein the valve device further comprises
a pressure-controlled valve configured to open the first fluid channel in the recirculation mode of the fuel filter module and to close off fluid-tightly the first fluid channel outside of the recirculation mode of the fuel filter module;
wherein a valve body of the pressure-controlled valve, the first fluid channel, and the second fluid channel are arranged coaxially to each other.

4 more elements

A fuel filter module configured to be switched into a recirculation mode and out of the recirculation mode, the fuel filter module comprising

a control valve comprising
a valve bore and
at least one valve device arranged in the valve bore,
wherein the at least one valve device comprises:
a first fluid channel through which fuel flows only in the recirculation mode of the fuel filter module;
a second fluid channel through which fuel flows only outside of the recirculation mode of the fuel filter module;
wherein the first fluid channel extends inside the second fluid channel;
and
wherein the first fluid channel and the second fluid channel are arranged coaxially to each other;
wherein the control valve further comprises:
a temperature-controlled actuating element received at least partially in the valve bore and configured to linearly displace the at least one valve device in the valve bore, and
a spring element received at least partially in the valve bore and configured to spring-pretension the at least one valve device against the temperature-controlled actuating element.

9 more elements

Dependencies are inferred from the claim text.

Valve device and fuel filter module

Life of this patent

Valve device and fuel filter module

Life of this patent

Abstract

Claims20