# US 11,441,474 B2 · Integrated exhaust manifold cooling jacket > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,441,474 B2 - Document ID: US11441474B2 - Status: Granted - Kind: B2 - Application number: 16/951,948 - Filed: 2020-11-18 - Published: 2022-05-19 - Granted: 2022-09-13 - Earliest claimed: 2020-11-18 - Assignees: Ford Global Technologies, LLC - Applicants: Ford Global Technologies, LLC - Inventors: Jeff Fluharty; Forest Heggie; Phil Cierpial; Chad Ramsby; Jon LaCroix - Web page: https://patentgrep.com/patent/US11441474B2 ## CPC - F01N 13/10: of exhaust manifolds {(with cooling jacket F01N3/046)} - F01N 13/102: {having thermal insulation} - F01N 13/105: {having the form of a chamber directly connected to the cylinder head, e.g. without having tubes connected between cylinder head and chamber} - F01P 3/02: Arrangements for cooling cylinders or cylinder heads - F01P 3/12: Arrangements for cooling other engine or machine parts - F01P 3/20: Cooling circuits not specific to a single part of engine or machine (F01P3/22 takes precedence) - F02F 1/243: {Cylinder heads and inlet or exhaust manifolds integrally cast together} - F02F 1/40: cylinder heads with means for directing, guiding, or distributing liquid stream - F01N 13/1888: {the housing of the assembly consisting of two or more parts, e.g. two half-shells} - F01N 2470/16: Plurality of inlet tubes, e.g. discharging into different chambers - F01P 2003/024: {Cooling cylinder heads} - F01P 2060/16: Outlet manifold - 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) - F02F: CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES ## Abstract Systems for an integrated exhaust manifold cylinder head are provided. In one example, an exhaust manifold for a vehicle includes a plurality of exhaust runners coupling a plurality of cylinder exhaust gas outlet ports to an exhaust exit port, the plurality of exhaust runners forming at least a first exhaust passage and a second exhaust passage at the exhaust exit port; an upper cooling jacket positioned vertically above the first exhaust passage; a lower cooling jacket positioned vertically below the second exhaust passage; and a central cooling jacket positioned vertically below the first exhaust passage and vertically above the second passage. ## Claims ### Claim 1 An exhaust manifold for an engine, comprising: a plurality of exhaust runners coupling a plurality of cylinder exhaust gas outlet ports to an exhaust exit port, the plurality of exhaust runners forming a first exhaust passage, a second exhaust passage, and a third exhaust passage at the exhaust exit port, the third exhaust passage horizontally aligned with the first exhaust passage; an upper cooling jacket positioned vertically above the first exhaust passage; a lower cooling jacket positioned vertically below the second exhaust passage; and a central cooling jacket positioned vertically below the first exhaust passage and vertically above the second exhaust passage and including a ridge that extends upward from a top portion of the central cooling jacket, the ridge positioned intermediate the first exhaust passage and the third exhaust passage. ### Claim 2 (depends on 1) The exhaust manifold of claim 1, wherein the exhaust manifold is integrated within a cylinder head. ### Claim 3 (depends on 1) The exhaust manifold of claim 1, wherein the upper cooling jacket and the central cooling jacket collectively form a first channel at least partially surrounding the first exhaust passage. ### Claim 4 (depends on 3) The exhaust manifold of claim 3, wherein the central cooling jacket and the lower cooling jacket collectively form a second channel at least partially surrounding the second exhaust passage. ### Claim 5 (depends on 4) The exhaust manifold of claim 4, wherein the upper cooling jacket and the central cooling jacket collectively form a third channel at least partially surrounding the third exhaust passage and wherein the ridge forms part of the first channel and the second channel. ### Claim 6 (depends on 1) The exhaust manifold of claim 1, wherein the central cooling jacket is fluidly coupled to the lower cooling jacket at a first end of the central cooling jacket and is fluidly coupled to the upper cooling jacket at a second end of the central cooling jacket. ### Claim 7 (depends on 1) The exhaust manifold of claim 1, wherein the upper cooling jacket extends a first distance along the first exhaust passage, parallel to a horizontal axis, and the central cooling jacket extends a second distance along the first exhaust passage, parallel to the horizontal axis, and the second distance is shorter than the first distance. ### Claim 8 (depends on 7) The exhaust manifold of claim 7, wherein the central cooling jacket is positioned vertically below the first exhaust passage and vertically above the second exhaust passage with respect to a vertical axis that is parallel to a direction of gravity when a vehicle including the exhaust manifold is on a driving surface, and wherein the horizontal axis is perpendicular to the vertical axis. ### Claim 9 (depends on 1) The exhaust manifold of claim 1, further comprising a drilled passage fluidly coupling the central cooling jacket to a degas port, the degas port configured to fluidly couple to a degas bottle. ### Claim 10 An exhaust manifold integrated in a cylinder head of an engine, comprising: a plurality of exhaust runners coupling a plurality of cylinder exhaust gas outlet ports to an exhaust exit port, the plurality of exhaust runners forming a first exhaust passage, a second exhaust passage, and a third exhaust passage at the exhaust exit port; a passage terminating at a degas port; an upper cooling jacket positioned vertically above the first exhaust passage and the second exhaust passage; a lower cooling jacket positioned vertically below the third exhaust passage; and a central cooling jacket positioned vertically below the first exhaust passage and the second exhaust passage and vertically above the third exhaust passage, the central cooling jacket including a ridge extending upward from a top portion of the central cooling jacket, the ridge positioned intermediate the first exhaust passage and the second exhaust passage and fluidly coupled to the passage. ### Claim 11 (depends on 10) The exhaust manifold of claim 10, wherein the ridge forms a vertically-highest portion of the central cooling jacket. ### Claim 12 (depends on 10) The exhaust manifold of claim 10, wherein the central cooling jacket includes one or more bifurcated sections and/or one or more curved sections configured to increase a flow velocity of coolant flowing through a front side of the central cooling jacket relative to a flow velocity of coolant flowing through a rear side of the central cooling jacket. ### Claim 13 (depends on 12) The exhaust manifold of claim 12, wherein the front side of the central cooling jacket is proximate to and faces a turbocharger mounting surface of the exhaust manifold. ### Claim 14 An exhaust manifold for an engine, comprising: a plurality of exhaust runners coupling a plurality of cylinder exhaust gas outlet ports to an exhaust exit port, the plurality of exhaust runners forming a first exhaust passage, a second exhaust passage, and a third exhaust passage at the exhaust exit port; an upper cooling jacket positioned vertically above the first exhaust passage and the second exhaust passage; a lower cooling jacket positioned vertically below the third exhaust passage; and a central cooling jacket positioned vertically below the first exhaust passage and the second exhaust passage and vertically above the third exhaust passage, the central cooling jacket fluidly coupled to the lower cooling jacket at a first fluidic coupling located at a first end of the central cooling jacket and fluidly coupled to the upper cooling jacket at a second fluidic coupling located at a second end of the central cooling jacket, the central cooling jacket maintained fluidly separate from the lower cooling jacket along an entirety of the central cooling jacket other than at the first fluidic coupling. ### Claim 15 (depends on 14) The exhaust manifold of claim 14, further comprising a degas passage terminating at a degas port, the degas passage fluidly coupled to the central cooling jacket at a ridge of the central cooling jacket, the ridge positioned intermediate the first exhaust passage and the second exhaust passage. ### Claim 16 (depends on 15) The exhaust manifold of claim 15, wherein the central cooling jacket is maintained fluidly separate from the upper cooling jacket along the entirety of the central cooling jacket other than at the second fluidic coupling and a third fluidic coupling provided via the degas passage. ### Claim 17 (depends on 15) The exhaust manifold of claim 15, wherein the central cooling jacket is positioned vertically below the first exhaust passage and the second exhaust passage and vertically above the third exhaust passage with respect to a vertical axis that is parallel to a direction of gravity when a vehicle including the exhaust manifold is on a driving surface, and wherein the central cooling jacket has a longitudinal axis perpendicular to the vertical axis, and coolant is configured to flow from the first fluidic coupling to the second fluidic coupling along the longitudinal axis.