Method for rapidly emptying the activated carbon filter while using an HC sensor (concentration change)
AssigneeContinental Automotive GmbH
InventorsRudolf Bierl, Stephan Heinrich, Wolfgang Mai, Paul Rodatz, Manfred Weigl, Andreas Wildgen
Life of this patent
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Abstract
A method for rapidly emptying an activated carbon filter while using an HC sensor (concentration change). A device for a tank system, for a motor vehicle having the device for a tank system and to a method for emptying an activated carbon filter for a tank system. The concentration of volatile components which are flushed from the activated carbon filter is detected by a concentration sensor. The concentration sensor is used as an early warning sensor to prevent any disturbances of mixture production of an engine.
Claims16
-12. (canceled)
An apparatus for a tank system, comprising:
- a control device;
- a supply line for volatile fuel components;
- an activated carbon filter absorb the volatile fuel components from the supply line;
- a purge gas apparatus configured to supply a purge gas to the activated carbon filter;
- a first valve coupled to the control device;
- an outlet line having the valve arranged therein configured to discharge the volatile fuel components from the activated carbon filter using the purge gas and the first valve;
- a concentration sensor arranged in the outlet line and coupled to the control device configured to detect a concentration of volatile fuel components;
- and
- a second valve arranged in the purge gas line configured to be one of controlled and regulated in response to at least one of a concentration of the volatile fuel components and a concentration change of the volatile fuel components.
A motor vehicle having an apparatus for a tank system comprising:
- a control device;
- a supply line for volatile fuel components;
- an activated carbon filter that can take up the volatile fuel components from the supply line;
- a purge gas apparatus configured to supply a purge gas to the activated carbon filter;
- a first valve coupled to the control device;
- an outlet line having the valve arranged therein configured to discharge the volatile fuel components from the activated carbon filter using the purge gas and the first valve;
- a concentration sensor arranged in the outlet line and coupled to the control device configured to detect a concentration of volatile fuel components;
- and
- a first valve arranged in the purge gas line configured to be one of controlled and regulated in response to at least one of a concentration of the volatile fuel components and a concentration change of the volatile fuel components.
A method for emptying an activated carbon filter for a tank system, comprising:
- filtering volatile fuel components in an activated carbon filter;
- flowing a purge gas through the activated carbon filter;
- detecting by a concentration sensor at least one of a concentration of the volatile fuel components and a concentration change of the volatile fuel components in an outlet line of the activated carbon filter;
- transmitting the at least one of the concentration of the volatile fuel components and the concentration change of the volatile fuel components from the concentration sensor to a control device;
- purging the activated carbon filter controlled at least in part by the control device;
- and
- at least one of controlling and regulating a valve arranged in a purge gas line based at least in part on the at least one of the concentration of the volatile fuel components and the concentration change of the volatile fuel components.
Dependencies are inferred from the claim text.