# US 9,518,501 B2 · Exhaust manifold for exhaust system of a combustion engine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,518,501 B2 - Document ID: US9518501B2 - Status: Granted - Kind: B2 - Application number: 14/660,511 - Filed: 2015-03-17 - Published: 2015-09-24 - Granted: 2016-12-13 - Earliest claimed: 2014-03-20 - Assignees: Benteler Automobiltechnik GmbH - Applicants: Benteler Automobiltechnik GmbH - Inventors: Uwe Fischer; Tobias Gockel; Ali Asgar Kharwawala; Elmar Grussmann - Web page: https://patentgrep.com/patent/US9518501B2 ## CPC - F01N 13/10: of exhaust manifolds {(with cooling jacket F01N3/046)} - F01N 13/102: {having thermal insulation} - F01N 13/143: {with air filling the space between both walls} - F01N 13/16: Selection of particular materials - F01N 13/1811: {with means permitting relative movement, e.g. compensation of thermal expansion or vibration} - F01N 13/1872: {the assembly using stamp-formed parts or otherwise deformed sheet-metal} - F16L 21/00: Joints with sleeve or socket (F16L13/00, {F16L15/00,} F16L17/00, F16L19/00 take precedence; {joints for pipes made of reinforced concrete F16L25/0027;} connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics F16L47/00; specially adapted for pipes of brittle material F16L49/00) - F16L 23/00: Flanged joints (F16L13/00, F16L17/00, F16L19/00 take precedence; adjustable joints F16L27/00; for hoses F16L33/00; couplings of the quick-acting type F16L37/00; for double-walled or multi-channel pipes, or pipe assemblies F16L39/00; connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics F16L47/00; specially adapted for pipes of brittle material F16L49/00) - F01N 13/1805: {Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body (pipe joints in general F16L; fixing auxiliaries in motor vehicles in general B60K)} - F01N 13/1894: {the parts being assembled in longitudinal direction} - F01N 2260/10: for avoiding stress caused by expansions or contractions due to temperature variations - F01N 2260/20: for heat or sound protection, e.g. using a shield or specially shaped outer surface of exhaust device - F01N 2340/00: Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the exhaust apparatus; Spatial arrangements of exhaust apparatuses - F01N 2530/04: Steel alloys, e.g. stainless steel - 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 ## Abstract An exhaust manifold for an exhaust system of a combustion engine includes an internal pipe system having a plurality of pipe sections and an outer shell which is disposed in spaced-apart surrounding relationship to the internal pipe system and joined to an outlet flange. The outlet flange includes a neck portion, an outer flange portion adjacent to the neck portion, and an inwardly directed shoulder portion which extends from the neck portion outwards, with the outer shell being joined at the shoulder portion to the outlet flange. ## Claims ### Claim 1 An exhaust manifold for an exhaust system of a combustion engine, comprising: an internal pipe system having a plurality of pipe sections; an outer shell in spaced-apart surrounding relationship to the internal pipe system; and an outlet flange assembly comprising a neck portion, an outer flange portion adjacent to the neck portion, and an inwardly directed shoulder portion extending from the neck portion outwards, wherein the outlet flange assembly is separate from the outer shell, said outer shell being joined at the shoulder portion to the outlet flange assembly, leaving the neck portion and the outer flange portion exposed. ### Claim 2 (depends on 1) The exhaust flange of claim 1, wherein the shoulder portion has a mean wall thickness which is greater than a wall thickness of the outer shell. ### Claim 3 (depends on 1) The exhaust flange of claim 1, wherein the shoulder portion has a mean wall thickness which is greater or equal to twice a wall thickness of the outer shell. ### Claim 4 (depends on 1) The exhaust flange of claim 1, wherein the shoulder portion is configured to taper to a free end thereof. ### Claim 5 (depends on 1) The exhaust flange of claim 1, wherein the outer shell rests upon an outer side of the shoulder portion and is joined to the outlet flange assembly. ### Claim 6 (depends on 1) The exhaust flange of claim 1, wherein the shoulder portion has a length, as measured in a longitudinal direction of the outer shell, the length of the shoulder portion being greater than a length of the shoulder portion in transverse direction. ### Claim 7 (depends on 1) The exhaust flange of claim 1, wherein the outer shell is comprised of at least two shell members having edges connected to one another. ### Claim 8 (depends on 1) The exhaust flange of claim 1, further comprising an inlet flange configured for attachment to a cylinder head of the combustion engine. ### Claim 9 (depends on 1) The exhaust flange of claim 1, wherein the outlet flange assembly and the inlet flange are cast parts. ### Claim 10 (depends on 1) The exhaust flange of claim 1, wherein the outlet flange assembly and the inlet flange are heat-resistant steel castings. ### Claim 11 (depends on 1) The exhaust flange of claim 1, wherein the outer shell is made of stainless steel. ### Claim 12 (depends on 1) The exhaust flange of claim 1, wherein the outer shell is made of rust-proof austenitic steel. ### Claim 13 (depends on 12) The exhaust flange of claim 12, wherein the austenitic steel is chrome-nickel steel or chrome-nickel-titanium steel.