Tank ventilation device for a motor vehicle
AssigneeVitesco Technologies GmbH
InventorsTobias Hirthammer, Karl Gruenbeck
Life of this patent
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Abstract
The disclosure relates to a tank ventilation apparatus for a motor vehicle which has a scavenging line which is arranged between an activated-carbon container and an intake line of the motor vehicle and in which an electrically driven scavenging pump is arranged. Furthermore, an electrically controllable directional control valve is provided in the scavenging line between the activated-carbon container and the electrically driven scavenging pump.
Claims15
A tank ventilation apparatus for a motor vehicle, the tank ventilation apparatus comprising:
- an activated-carbon container;
- an intake line;
- a scavenging line arranged between the activated-carbon container and the intake line;
- an electrically driven scavenging pump is provided in the scavenging line;
- and
- an electrically controllable directional control valve is provided in the scavenging line between the activated-carbon container and the electrically driven scavenging pump,
- wherein the electrically controllable directional control valve is formed by a first valve having one connection to a fresh air filter and another connection to the scavenging line, and a second valve having one connection to the activated-carbon container and another connection to the scavenging line upstream of a pressure sensor.
A method for operating a tank ventilation apparatus, the method comprising:
- conveying tank ventilation gases stored in an activated-carbon container via a scavenging line, in which an electrically controllable scavenging pump is located, into an intake line of a motor vehicle;
- and
- directing the tank ventilation gases via an electrically controllable directional control valve which is arranged in the scavenging line, wherein the electrically controllable directional control valve is formed by a first valve having one connection to a fresh air filter and another connection to the scavenging line, and a second valve having one connection to the activated-carbon container and another connection to the scavenging line upstream of a pressure sensor.
Dependencies are inferred from the claim text.