# US 2014/0196808 A1 · Supply system for a liquid > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0196808 A1 - Document ID: US20140196808A1 - Status: Published application - Kind: A1 - Application number: 14/241,545 - Filed: 2012-08-08 - Published: 2014-07-17 - Earliest claimed: 2011-08-29 - Assignees: Inergy Automotive Systems Research (Societe Anonyme) - Inventors: Pierric Besnard - Web page: https://patentgrep.com/patent/US20140196808A1 ## CPC - F17C 13/10: Arrangements for preventing freezing - F01N 3/2066: {Selective catalytic reduction [SCR]} - F16L 9/18: Double-walled pipes; Multi-channel pipes or pipe assemblies - F16L 11/20: Double-walled hoses - F16L 55/052: Pneumatic reservoirs - F16L 55/054: the reservoir being placed in or around the pipe from which it is separated by a sleeve-shaped membrane - F01N 2610/02: the substance being ammonia or urea - F01N 2610/10: the substance being heated, e.g. by heating tank or supply line of the added substance - F01N 2610/14: Arrangements for the supply of substances, e.g. conduits - Y02T 10/12: Improving ICE efficiencies - F17C: VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES (storing fluids in natural or artificial cavities or chambers in the earth B65G5/00; construction or assembling of bulk storage containers employing civil-engineering techniques E04H7/00; variable-capacity gas-holders F17B; liquefaction or refrigeration machines, plants, or systems F25) - F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16) - F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A supply system for liquid including a liquid tank and a liquid supply line forming a passage for the liquid from the tank to an outlet of the supply system. The supply line includes at least one part configured to form at least one gas pocket communicating with the passage to take up a change of volume of the liquid in event of freezing. Such a system can be used in a selective catalytic reduction system (SCR). ## Claims ### Claim at position 1 1-15. (canceled) ### Claim 16 A supply system for a liquid, comprising: a liquid tank, and a liquid supply line forming a passage for liquid from the tank to an outlet of the supply system, wherein the supply line includes at least one part configured to form at least one gas pocket communicating with the passage to take up a change of volume of the liquid in event of freezing. ### Claim 17 (depends on 16) A supply system according to claim 16, wherein at least a portion of the gas pocket is comprised in a substantially vertical portion of, or extending from, the supply line. ### Claim 18 (depends on 16) A supply system according to claim 16, the supply line comprising inner and outer coaxial conduits, the inner coaxial conduit including an open end communicating with an interior of the outer coaxial conduit. ### Claim 19 (depends on 18) A supply system according to claim 18, wherein the inner coaxial conduit comprises a closed end. ### Claim 20 (depends on 18) A supply system according to claim 18, wherein the outer coaxial conduit comprises a closed end. ### Claim 21 (depends on 16) A supply system according to claim 16, wherein the part forming the gas pocket is an appendix emerging in the passage. ### Claim 22 (depends on 16) A supply system according to claim 16, wherein the supply line comprises a corrugated part, corrugations of which form a plurality of gas pockets. ### Claim 23 (depends on 16) A supply system according to claim 16, wherein the at least one part forming the gas pocket is formed by an enlarged substantially vertical section of the supply line, extending between two transverse upper and lower sections and which is configured to enable the liquid to fall down to a bottom of the lower section while forming the gas pocket between respective ends of the vertical section. ### Claim 24 (depends on 23) A supply system according to claim 23, wherein the enlarged section is formed by a sealed box including an inlet and an outlet for connecting the box to the supply line. ### Claim 25 (depends on 24) A supply system according to claim 24, wherein the sealed box comprises a plunging tube connected to the inlet of the box and extending towards a bottom of the enlarged section to separate the gas from the liquid flow. ### Claim 26 (depends on 16) A supply system according to claim 16, further comprising means for reducing pressure in the supply line, and means for returning liquid present in the supply line to the tank. ### Claim 27 (depends on 26) A supply system according to claim 26, wherein the means for returning liquid present in the supply line to the tank comprises at least one leakage formed in a structure of a pump or a bypass connecting the supply line to the tank and including a valve, or an electrovalve. ### Claim 28 (depends on 26) A supply system according to claim 26, further comprising a gas trap in or between the part forming at least one gas pocket and a rest of the supply line to trap the gas. ### Claim 29 (depends on 28) A supply system according to claim 28, wherein the trap is in a shape of a siphon, or has a U-bend, or an inverted U-bend. ### Claim 30 (depends on 28) A supply system according to claim 28, wherein the trap is formed in a sealed box including an inlet and an outlet connected to the supply line.