# US 11,905,876 B2 · Passive air cooling > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,905,876 B2 - Document ID: US11905876B2 - Status: Granted - Kind: B2 - Application number: 17/550,625 - Filed: 2021-12-14 - Published: 2022-04-07 - Granted: 2024-02-20 - Earliest claimed: 2019-08-15 - Assignees: Kohler Co. - Applicants: Kohler Co. - Inventors: Chad Stenson; William Gysi; Adam Clouse - Web page: https://patentgrep.com/patent/US11905876B2 ## CPC - F01P 1/06: Arrangements for cooling other engine or machine parts - F02B 29/0475: {the intake air cooler being combined with another device, e.g. heater, valve, compressor, filter or EGR cooler, or being assembled on a special engine location} - F01P 3/18: Arrangements or mounting of liquid-to-air heat-exchangers (such arrangements on cylinders or cylinder heads F01P3/04; relative to vehicles B60K11/04) - F02B 29/0418: {the intake air cooler having a bypass or multiple flow paths within the heat exchanger to vary the effective heat transfer surface} - F02B 29/0456: {Air cooled heat exchangers} - F02M 31/20: for cooling ({F02M31/005 takes precedence; use of cold F02M17/52;} cooling of charging-air or of scavenging-air F02B29/04) - F01P 2003/187: {arranged in series} - F01P 2060/02: Intercooler - Y02T 10/12: Improving ICE efficiencies - F01P: COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES (arrangements in connection with cooling of propulsion units in vehicles B60K11/00; heat-transfer, heat-exchange or heat-storage materials C09K5/00; {cooling of gas-turbine engines F02C7/12}; heat exchange in general, radiators F28) - F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G) - F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A passive cooling system includes a fan configured to generate an air flow path for a radiator, the air flow path extending from the fan to the radiator and a cooling pipe extended between a turbocharger and an intake manifold, the cooling path positioned in the air flow path between the fan and the radiator. ## Claims ### Claim 1 A cooling system comprising: a radiator; a fan configured to generate an air flow path for the radiator, the fan rotating about a rotation axis; and a cooling pipe positioned between the fan and the radiator, wherein the cooling pipe extends linearly across a width of the radiator above the rotation axis of the fan; wherein the air flow path flows from the fan to the radiator across the cooling pipe. ### Claim 2 (depends on 1) The cooling system of claim 1, further comprising: a turbocharger; and an intake manifold, wherein the cooling pipe extends between the turbocharger and the intake manifold. ### Claim 3 (depends on 2) The cooling system of claim 2, wherein the cooling pipe is parallel to a line from the turbocharger to the intake manifold. ### Claim 4 (depends on 1) The cooling system of claim 1, wherein the cooling pipe is a predetermined color. ### Claim 5 (depends on 1) The cooling system of claim 1, wherein the cooling pipe extends in a direction perpendicular to the air flow path. ### Claim 6 (depends on 1) The cooling system of claim 1, wherein the cooling pipe is positioned at a location that intersects a line between the fan and the radiator. ### Claim 7 (depends on 1) The cooling system of claim 1, wherein the cooling pipe extends in a first direction from the turbocharger toward the cooling system, and a second direction perpendicular to the first direction. ### Claim 8 (depends on 1) The cooling system of claim 1, further comprising: a turbine located in an exhaust duct; and a compressor rotationally coupled to the turbine and configured to force air through the cooling pipe. ### Claim 9 (depends on 1) The cooling system of claim 1, further comprising: an air pipe configured to support the cooling path, wherein air flows through the air pipe. ### Claim 10 (depends on 1) The cooling system of claim 1, further comprising: a frame including one or more openings to support the cooling pipe. ### Claim 11 (depends on 10) The cooling system of claim 10, wherein a vertical plate of the frame supports the cooling pipe and the fan. ### Claim 12 An engine comprising: a turbocharger; a radiator; an intake manifold; and a cooling system including: a fan configured to generate an air flow path for the radiator; and a cooling pipe positioned between the fan and the radiator and coupled to the turbocharger and the intake manifold, wherein the air flow path flows from the fan to the radiator across the cooling pipe, wherein the cooling pipe extends across a width of the radiator above a rotation axis of the fan. ### Claim 13 (depends on 12) The engine of claim 12, wherein the cooling pipe extends in a direction perpendicular to the air flow path. ### Claim 14 (depends on 12) The engine of claim 12, wherein the cooling pipe is substantially parallel to a path from the turbocharger to the intake manifold. ### Claim 15 (depends on 12) The engine of claim 12, wherein the cooling pipe extends in a first direction from the turbocharger toward the cooling system, and a second direction perpendicular to the first direction. ### Claim 16 (depends on 12) The engine of claim 12, wherein the cooling system includes: a turbine located in an exhaust duct; and a compressor rotationally coupled to the turbine and configured to force air through the cooling pipe. ### Claim 17 (depends on 1) The cooling system of claim 1 wherein the cooling pipe has a diameter that is substantially constant. ### Claim 18 (depends on 1) The cooling system of claim 1 wherein the cooling pipe is free of branches or tees. ### Claim 19 (depends on 12) The engine of claim 12 wherein the cooling pipe extends linearly across the width of the radiator. ### Claim 20 (depends on 12) The engine of claim 12 wherein the cooling pipe has a diameter that is substantially constant.