# US 2024/0200713 A1 · Fuel Line Comprising Insulation, and Pressure Vessel System > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0200713 A1 - Document ID: US20240200713A1 - Status: Published application - Kind: A1 - Application number: 18/286,141 - Filed: 2022-04-06 - Published: 2024-06-20 - Earliest claimed: 2021-04-30 - Assignees: Bayerische Motoren Werke Aktiengesellschaft - Applicants: Bayerische Motoren Werke Aktiengesellschaft - Inventors: Klaus SZOUCSEK - Web page: https://patentgrep.com/patent/US20240200713A1 ## CPC - B60K 15/03006: {Gas tanks (B60K15/07 takes precedence)} - F16L 59/147: the insulation being located inwardly of the outer surface of the pipe - B60K 15/03: Fuel tanks - B60K 15/07: of gas tanks - F02M 21/0221: {Fuel storage reservoirs, e.g. cryogenic tanks} - F02M 21/0242: {Shut-off valves; Check valves; Safety valves; Pressure relief valves} - F02M 21/0245: {High pressure fuel supply systems; Rails; Pumps; Arrangement of valves} - F16L 9/18: Double-walled pipes; Multi-channel pipes or pipe assemblies - B60K 2015/03144: {Fluid connections between the tanks} - B60K 2015/03328: {Arrangements or special measures related to fuel tanks or fuel handling} - B60K 2015/0634: {the fuel tank is arranged below the vehicle floor} - Y02E 60/32: Hydrogen storage - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL - F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A pressure vessel system for a motor vehicle for storing fuel includes a plurality of pressure vessels that are combined to form a pressure vessel assembly. The pressure vessels, when mounted, are arranged substantially in parallel relative to one another, and the pressure vessels are fluidically interconnected via a common fuel line. The technology further relates to a fuel line comprising thermal insulation. ## Claims ### Claim at position 1 1-14. (canceled) ### Claim 15 A fuel line for a pressure vessel system of a motor vehicle, the fuel line comprising: a wall; and thermal insulation provided in an interior of the wall, wherein the wall is configured to compensate mechanical loads resulting from internal pressure prevalent in the fuel line. ### Claim 16 (depends on 15) The fuel line according to claim 15, wherein at least one pipe at least conjointly forms the thermal insulation. ### Claim 17 (depends on 15) The fuel line according to claim 15, wherein a wall thickness of the thermal insulation is less than a wall thickness of the wall by a factor of at least 2. ### Claim 18 (depends on 17) The fuel line according to claim 17, wherein the factor is at least 5. ### Claim 19 (depends on 18) The fuel line according to claim 18, wherein the factor is at least 10. ### Claim 20 (depends on 16) The fuel line according to claim 16, wherein at least one gap is provided at least in regions between the wall and the at least one pipe. ### Claim 21 (depends on 20) The fuel line according to claim 20, wherein the at least one pipe is permeable to fuel at least in regions, whereby pressure in the at least one gap and pressure in an interior region of the at least one pipe at least approximate one another. ### Claim 22 (depends on 20) The fuel line according to claim 20, wherein the at least one pipe has at least one contact region in which the at least one pipe bears on the wall, and in other regions is spaced apart from the wall by the at least one gap. ### Claim 23 (depends on 20) The fuel line according to claim 20, wherein, during fueling, a flow rate of the fuel in the at least one gap is lower than in an interior region of the at least one pipe by a factor of at least 10. ### Claim 24 (depends on 23) The fuel line according to claim 23, wherein the factor is at least 100. ### Claim 25 (depends on 24) The fuel line according to claim 24, wherein the factor is at least 1000. ### Claim 26 (depends on 16) The fuel line according to claim 16, wherein the at least one pipe has at least one branch which is in each case fluidically connected to a rail connector for connecting a pressure vessel. ### Claim 27 (depends on 26) The fuel line according to claim 26, wherein at least one contact region is provided so as to be adjacent to the at least one branch. ### Claim 28 (depends on 16) The fuel line according to claim 16, wherein the at least one pipe is configured to be insertable into the interior of the wall. ### Claim 29 (depends on 15) The fuel line according to claim 15, wherein the insulation comprises an insulation coating applied to an inside of the wall. ### Claim 30 (depends on 15) The fuel line according to claim 15, wherein the wall comprises a metallic block in which at least one fuel duct is incorporated. ### Claim 31 (depends on 15) A pressure vessel system for storing fuel, the pressure vessel system comprising: a pressure vessel assembly comprising a plurality of pressure vessels fluidically connected to one another by the fuel line of claim 15, wherein the pressure vessels in an installed position are disposed substantially parallel to one another. ### Claim 32 (depends on 31) The pressure vessel system according to claim 31, wherein the fuel line is configured as a fuel rail, and wherein a shut-off valve is provided on the fuel line, and wherein the pressure vessels of the pressure vessel assembly are configured as communicating pipes. ### Claim 33 (depends on 32) The pressure vessel system according to claim 32, wherein no electrically activatable shut-off valves are provided between the pressure vessels and the fuel line.