# US 2009/0260775 A1 · Heat exchanger, in particular an exhaust gas evaporator of a motor vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2009/0260775 A1 - Document ID: US20090260775A1 - Status: Published application - Kind: A1 - Application number: 12/421,394 - Filed: 2009-04-09 - Published: 2009-10-22 - Earliest claimed: 2008-04-16 - Inventors: Ulrich MAUCHER; Martin Kaemmerer; Diem Johannes - Web page: https://patentgrep.com/patent/US20090260775A1 ## CPC - F28D 9/0043: {the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another} - F01N 5/02: the devices using heat - F01P 3/2285: {Closed cycles with condenser and feed pump} - F02G 5/02: Profiting from waste heat of exhaust gases - F28F 9/0219: {Arrangements for sealing end plates into casing or header box; Header box sub-elements (F28F9/0236 takes precedence)} - F01N 2240/02: a heat exchanger - F02B 29/0425: {Air cooled heat exchangers} - F02B 37/00: Engines characterised by provision of pumps driven at least for part of the time by exhaust - F02G 2260/00: Recuperating heat from exhaust gases of combustion engines and heat from cooling circuits - F02M 26/05: High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor - F02M 26/28: with liquid-cooled heat exchangers - Y02T 10/12: Improving ICE efficiencies - F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general) - 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) - F02G: HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS (steam engine plants, special vapour plants, plants operating on either hot gas or combustion-product gases together with other fluid F01K; gas-turbine plants F02C; jet-propulsion plants F02K); USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) - 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 heat exchanger is provided, in particular an exhaust gas evaporator of a motor vehicle, including a heat exchanger block, a first axial terminating device and a second axial terminating device, in which the heat exchanger block has axial inlet openings and axial outlet openings, and in which means for forming a positive fit with the axial terminating devices are situated on the heat exchanger block, the means for forming the positive fit projecting at least partially over the axial inlet openings and/or over the axial outlet openings in the heat exchanger block in the axial direction, such that they may be situated radially next to contact shoulders of the axial terminating devices, thereby providing a heat exchanger that is particularly pressure-resistant in the radial direction. ## Claims ### Claim 1 A heat exchanger comprising: a heat exchanger block having an axial inlet opening and an axial outlet opening; a first axial terminating device; a second axial terminating device; and positive fit components for forming a positive fit with the first and second axial terminating devices, the positive fit components projecting at least partially over the axial inlet openings and/or over the axial outlet openings of the heat exchanger block in an axial direction such that the positive fit components are provided radially next to contact shoulders of the axial terminating devices. ### Claim 2 (depends on 1) The heat exchanger according to claim 1, wherein the positive fit components are provided in axially open grooves of the axial terminating devices. ### Claim 3 (depends on 1) The heat exchanger according to claim 1, wherein the positive fit components are formed by radial outer components of the heat exchanger block. ### Claim 4 (depends on 3) The heat exchanger according to claim 3, wherein the radial outer components of the heat exchanger block form a casing of the heat exchanger block. ### Claim 5 (depends on 1) The heat exchanger according to claim 1, wherein the positive fit components are formed by spacer bars and/or by laminated plates of the heat exchanger block. ### Claim 6 (depends on 2) The heat exchanger according to claim 2, wherein the axially open grooves of the axial terminating devices have an outer groove shoulder and/or an inner groove shoulder, on which the positive fit components are supported in a radial direction. ### Claim 7 (depends on 1) The heat exchanger according to claim 1, wherein a radial contact shoulder or an inner groove shoulder of the axially open grooves forms an axial limit stop for components of the heat exchanger block, including laminated plates, spacer bars and/or connecting channels of the heat exchanger block. ### Claim 8 (depends on 1) The heat exchanger according to claim 1, wherein the heat exchanger block has axially acting fixing components that project radially over the heat exchanger block or radially over the casing of the heat exchanger block. ### Claim 9 (depends on 1) The heat exchanger according to claim 1, wherein the axially acting fixing components are provided on the laminated plates and/or on spacer bars. ### Claim 10 (depends on 1) The heat exchanger according to claim 1, wherein the axial terminating devices have radially open fixing grooves for axially acting fixing components of the heat exchanger block. ### Claim 11 (depends on 10) The heat exchanger according to claim 10, wherein the radially open fixing grooves are provided upstream from the axially open grooves in the axial direction. ### Claim 12 (depends on 1) The heat exchanger according to claim 1, wherein an axially open groove of the axial terminating devices and/or a radially open fixing groove of the axial terminating devices has a solder depot. ### Claim 13 (depends on 1) The heat exchanger according to claim 1, wherein the axial terminating devices have a connecting flange for an exhaust gas system of a motor vehicle. ### Claim 14 (depends on 1) The heat exchanger according to claim 1, wherein the heat exchanger block has an exhaust gas side and an evaporator side. ### Claim 15 (depends on 1) The heat exchanger according to claim 1, wherein the heat exchanger is an exhaust gas evaporator of a motor vehicle.