Granted Patent B1

US 12,655,941 · App. 18/998,610 · Granted Jun 16, 2026

Inventors: Jochen Wessner (Esslingen, DE); Martin Katz (Stuttgart, DE)

Assignee: Robert Bosch GmbH

F17C5/005F17C13/026F17C2205/0323F17C2221/012F17C2250/0439F17C2250/0443F17C2250/0491F17C2250/0495F17C2250/0636F17C2270/0168F17C2270/0184

Abstract

Claims (20)

1 . A method of filling a storage volume ( 2 ) of a fuel gas tank ( 1 ) with fuel gas, in which the fuel gas is introduced into the storage volume ( 2 ) via a fueling path ( 3 ) with an integrated tank valve ( 4 ), and a temperature of the fuel gas is sensed with a sensor ( 5 ) integrated in the fueling path ( 3 ) in an area of a bottleneck point ( 7 ), which is formed by the sensor ( 5 ) and/or a holding body ( 8 ) on which the sensor ( 5 ) is mounted.

2 . The method according to claim 1 ,

wherein measured values of the sensor ( 5 ) are compared to a pre-determined temperature limit, and if the predetermined temperature limit is exceeded, the filling operation is discontinued or interrupted.

3 . The method according to claim 1 ,

wherein the temperature of the fuel gas is sensed outside the area of the bottleneck point ( 7 ) with a further sensor ( 6 ), and a mean and/or differential value is determined from measured values of both sensors ( 5 , 6 ).

4 . The method according to claim 3 ,

wherein a flow rate of the fuel gas is derived from the differential value.

5 . The method according to claim 3 , wherein the further sensor ( 6 ) is located in the storage volume ( 2 ).

6 . A fuel gas tank ( 1 ) for a fuel gas tank system, the fuel gas tank ( 1 ) comprising a storage volume ( 2 ), which can be filled with fuel gas via a fueling path ( 3 ) with an integrated tank valve ( 4 ), further comprising a sensor ( 5 ) integrated in the fueling path ( 3 ) for sensing a temperature of the fuel gas, wherein the sensor ( 5 ) and/or a holding body ( 8 ) on which the sensor ( 5 ) is mounted form a bottleneck point ( 7 ) in the fueling path ( 3 ), wherein a measuring area of the sensor ( 5 ) is arranged in the bottleneck point ( 7 ).

7 . The fuel gas tank ( 1 ) according to claim 6 ,

wherein the sensor ( 5 ) and/or the holding body ( 8 ) comprise a face surface ( 9 ), which is aligned substantially perpendicular to a direction of flow ( 15 ) of the fuel gas in the fueling path ( 3 ) when filling the storage volume ( 2 ) with fuel gas.

8 . The fuel gas tank ( 1 ) according to claim 6 ,

wherein a further sensor ( 6 ) is integrated into the fueling path ( 3 ) or into the storage volume ( 2 ) outside the bottleneck point ( 7 ).

9 . The fuel gas tank ( 1 ) according to claim 6 ,

wherein the fueling path ( 3 ) is guided at least in sections through a pipe ( 10 ) projecting into the storage volume ( 2 ).

10 . The fuel gas tank ( 1 ) according to claim 6 ,

wherein the fueling path ( 3 ), the tank valve ( 4 ), and the sensor ( 5 , 6 ) form a tank unit ( 11 ) that is inserted into an opening ( 13 ) on a face side of a wall ( 12 ) surrounding the storage volume ( 2 ).

11 . The fuel gas tank ( 1 ) according to claim 10 , wherein the tank unit ( 11 ) is screwed into the opening ( 13 ).

12 . The fuel gas tank ( 1 ) according to claim 10 , wherein the opening ( 13 ) is centrally located on the face side of the wall ( 12 ) surrounding the storage volume ( 2 ).

13 . A fuel gas tank system comprising at least one fuel gas tank ( 1 ) according to claim 6 .

Assignments (1)

Priority Claims (1)

References Cited (26)