# US 10,501,160 B1 · Cooling arrangements and cooling water sprayers for marine engines > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,501,160 B1 - Document ID: US10501160B1 - Status: Granted - Kind: B1 - Application number: 15/608,162 - Filed: 2017-05-30 - Granted: 2019-12-10 - Earliest claimed: 2017-05-30 - Assignees: Brunswick Corporation - Applicants: Brunswick Corporation - Inventors: Robert D. Cooper, III; Pankaj Ankush Jagadale; Joseph J. Klemp-Hawig; Michael A. Torgerud - Web page: https://patentgrep.com/patent/US10501160B1 ## CPC - B63H 20/28: {Arrangements, apparatus and methods for handling cooling-water in outboard drives, e.g.} cooling-water intakes {(cooling circuits for outboard marine engines F01P3/202)} - F01N 3/02: for cooling, or for removing solid constituents of, exhaust (by means of electric or electrostatic separators F01N3/01 {; mixing air with exhaust in tailpipes F01N13/082, F01N13/20}) - B63H 20/24: {Arrangements, apparatus and methods for handling exhaust gas in outboard drives, e.g.} exhaust gas outlets {(in engines, e.g. outboard marine engines, F01N)} - B63H 21/32: Arrangements of propulsion power-unit exhaust uptakes; Funnels peculiar to vessels - F01N 3/04: using liquids - F01P 3/202: {for outboard marine engines} - F01N 2610/1453: Sprayers or atomisers; Arrangement thereof in the exhaust apparatus - F01P 2060/16: Outlet manifold - Y02T 10/12: Improving ICE efficiencies - B63H: MARINE PROPULSION OR STEERING (propulsion of air-cushion vehicles B60V1/14; specially adapted for submarines, other than nuclear propulsion, B63G; specially adapted for torpedoes F42B19/00) - 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) - 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) - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A marine engine has an internal combustion engine; an exhaust conduit that conveys exhaust gas from the internal combustion engine; a cooling water sprayer that sprays a first flow of cooling water into the exhaust conduit; and a cooling water jacket that conveys a second flow of cooling water alongside the exhaust conduit so that the second flow of cooling water cools the exhaust conduit. The first flow of cooling water and at least part of the second flow of cooling water are merged and then sprayed together into the exhaust conduit via the cooling water sprayer. ## Claims ### Claim 1 A marine engine comprising an internal combustion engine; an exhaust conduit that conveys exhaust gas from the internal combustion engine; a cooling water sprayer that sprays a first flow of cooling water into the exhaust conduit; and a cooling water jacket that conveys a second flow of cooling water alongside the exhaust conduit so that the second flow of cooling water cools the exhaust conduit, wherein the first flow of cooling water and at least a portion of the second flow of cooling water are separate before being merged and then sprayed together into the exhaust conduit via the cooling water sprayer. ### Claim 2 A marine engine comprising an internal combustion engine; an exhaust conduit that conveys exhaust gas from the internal combustion engine; a cooling water sprayer that sprays a first flow of cooling water into the exhaust conduit; and a cooling water jacket that conveys a second flow of cooling water alongside the exhaust conduit so that the second flow of cooling water cools the exhaust conduit, wherein the first flow of cooling water and at least a portion of the second flow of cooling water are merged and then sprayed together into the exhaust conduit via the cooling water sprayer; wherein the first and second flows of cooling water flow parallel with respect to each other before being merged. ### Claim 3 (depends on 2) The marine engine according to claim 2, wherein the first flow of cooling water and the portion of the second flow of cooling water are merged in the cooling water sprayer. ### Claim 4 (depends on 3) The marine engine according to claim 3, wherein the cooling water sprayer comprises a through-bore that conveys the first flow of cooling water into the exhaust conduit and a cross-bore that is transverse to the through-bore and conveys the portion of the second flow of cooling water into the first flow of cooling water in the through-bore. ### Claim 5 (depends on 4) The marine engine according to claim 4, wherein the cross-bore extends through the cooling water sprayer so that a remaining portion of the second flow of cooling water passes through the cooling water sprayer and continues to flow in the cooling water jacket. ### Claim 6 (depends on 4) The marine engine according to claim 4, further comprising a first strainer that strains the first flow of cooling water and the second flow of cooling water, and a second strainer that strains only the second flow of cooling water. ### Claim 7 (depends on 6) The marine engine according to claim 6, wherein the first strainer is remotely located with respect to the cooling water sprayer and wherein the second strainer is located on the cooling water sprayer. ### Claim 8 A marine engine comprising an internal combustion engine; an exhaust conduit that conveys exhaust gas from the internal combustion engine; a cooling water sprayer that sprays a first flow of cooling water into the exhaust conduit; and a cooling water jacket that conveys a second flow of cooling water alongside the exhaust conduit so that the second flow of cooling water cools the exhaust conduit, wherein the first flow of cooling water and at least a portion of the second flow of cooling water are merged and then sprayed together into the exhaust conduit via the cooling water sprayer; further comprising a first strainer that strains the first flow of cooling water and the second flow of cooling water, and a second strainer that strains only the second flow of cooling water. ### Claim 9 (depends on 8) The marine engine according to claim 8, wherein the first strainer is remotely located with respect to the cooling water sprayer and wherein the second strainer is located on the cooling water sprayer. ### Claim 10 (depends on 1) The marine engine according to claim 1, further comprising at least one cooling water pump configured to pump the first flow of cooling water through the cooling water sprayer and the second flow of cooling water through the cooling water jacket. ### Claim 11 A marine engine comprising an internal combustion engine; an exhaust conduit that conveys exhaust gas from the internal combustion engine; a cooling water sprayer that sprays a first flow of cooling water into the exhaust conduit; and a cooling water jacket that conveys a second flow of cooling water alongside the exhaust conduit so that the second flow of cooling water cools the exhaust conduit, wherein the first flow of cooling water and at least a portion of the second flow of cooling water are merged and then sprayed together into the exhaust conduit via the cooling water sprayer; wherein the internal combustion is supported on an adapter plate and enclosed in an upper cowling; further comprising a lower cowling located below the upper cowling and extending below the adapter plate, and wherein the cooling water sprayer is located above the adapter plate so that it is accessible upon removal of the upper cowling while the lower cowling remains in place. ### Claim 12 A marine engine comprising an internal combustion engine; an exhaust conduit that conveys exhaust gas from the internal combustion engine; a cooling water sprayer that sprays a first flow of cooling water into the exhaust conduit; and a cooling water jacket that conveys a second flow of cooling water alongside the exhaust conduit so that the second flow of cooling water cools the exhaust conduit, wherein the first flow of cooling water and at least a portion of the second flow of cooling water are merged and then sprayed together into the exhaust conduit via the cooling water sprayer; wherein the cooling water sprayer comprises an elongated body that extends through and is seated in a cross-bore in the cooling water jacket and the exhaust conduit. ### Claim 13 (depends on 12) The marine engine according to claim 12, wherein the cooling water sprayer comprises a free end having a nozzle that extends into the exhaust conduit and is configured to spray cooling water into the exhaust gas. ### Claim 14 A marine engine comprising an internal combustion engine; an exhaust conduit that conveys exhaust gas from the internal combustion engine; a cooling water jacket that conveys cooling water alongside the exhaust conduit so as to cool the exhaust conduit; a cooling water sprayer that sprays a portion of the cooling water into the exhaust conduit; and a strainer disposed in the cooling water jacket and configured to strain the portion of the cooling water before it enters the cooling water sprayer, and is sprayed into the exhaust conduit. ### Claim 15 A marine engine comprising an internal combustion engine; an exhaust conduit that conveys exhaust gas from the internal combustion engine; a cooling water jacket that conveys cooling water alongside the exhaust conduit so as to cool the exhaust conduit; a cooling water sprayer that sprays a portion of the cooling water into the exhaust conduit; and a strainer disposed in the cooling water jacket and configured to strain the portion of the cooling water before it is sprayed into the exhaust conduit; wherein the sprayer is configured to merge the portion of the cooling water with another flow of cooling water from outside the cooling water jacket. ### Claim 16 A cooling water sprayer for a marine engine, in particular for spraying cooling water into an exhaust conduit to thereby cool exhaust gas in the exhaust conduit, wherein the cooling water sprayer comprises a body having a through-bore that is configured to convey a first flow of the cooling water into the exhaust conduit and a cross-bore that is transverse to the through-bore and configured to convey a separate, second flow of the cooling water into the first flow of cooling water in the through-bore such that the first and second flows of cooling water are merged in the cooling water sprayer. ### Claim 17 (depends on 16) The cooling water sprayer according to claim 16, further comprising a strainer that strains the second flow of cooling water. ### Claim 18 (depends on 16) The cooling water sprayer according to claim 16, further comprising a nozzle that extends into the exhaust conduit and is configured to spray the cooling water into the exhaust gas. ### Claim 19 (depends on 18) The cooling water sprayer according to claim 18, wherein the body and nozzle are made of metal. ### Claim 20 (depends on 18) The cooling water sprayer according to claim 18, wherein the body is made of a polymer and the nozzle is made of metal.