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公开(公告)号:US20220316430A1
公开(公告)日:2022-10-06
申请号:US17641941
申请日:2020-10-09
摘要: Iron-based braze filler alloys having unexpectedly narrow melting temperature ranges, low solidus and low liquidus temperatures, as determined by Differential Scanning calorimetry (DSC), while exhibiting high temperature corrosion resistance, good wetting, and spreading, without deleterious significant boride formation into the base metal, and that can be brazed below 1,100 C contains a) nickel in an amount of from 0% to 35% by weight, b) chromium in an amount of from 0% to 25% by weight, c) silicon in an amount of from 4% to 9% by weight, d) phosphorous in an amount of from 5% to 11% by weight, e) boron in an amount of from 0% to 1% by weight, and f) the balance being iron, the percentages of a) to f) adding up to 100% by weight. The braze filler alloys or metals have sufficient high temperature corrosion resistance to withstand high temperature conditions of Exhaust Gas Recirculation Coolers.
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公开(公告)号:US20210356218A1
公开(公告)日:2021-11-18
申请号:US16872560
申请日:2020-05-12
申请人: Hanon Systems
摘要: A heat exchanger element for use in a heat exchanger includes an outer wall formed into a tubular shape including a first portion and a second portion. The first portion is arranged parallel to and is spaced apart from the second portion. A plurality of fin structures extends between the first portion and the second portion of the outer wall. Each of the fin structures defines a flow channel configured to provide fluid communication between an outer surface of the first portion of the outer wall and an outer surface of the second portion of the outer wall. An interior of the outer wall is configured to receive a first fluid while an exterior of the outer wall and each of the flow channels defined by the fin structures are configured to receive a second fluid in heat exchange relationship with the first fluid.
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公开(公告)号:US20210047989A1
公开(公告)日:2021-02-18
申请号:US16539560
申请日:2019-08-13
申请人: Caterpillar Inc.
发明人: Dongming Tan , Michael Pollard
摘要: An EGR cooler includes an elongated, stainless steel cooler housing with a first end having a stainless steel end plate and a second end opposite the first end, and an Inconel diffuser having an inlet end defining a gas inlet and an outlet end welded to the stainless steel end plate. The stainless steel end plate having a first thickness and the outlet end of the Inconel diffuser including a sidewall having a second thickness that is 50% or less of the first thickness.
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公开(公告)号:US20190331066A1
公开(公告)日:2019-10-31
申请号:US15967134
申请日:2018-04-30
发明人: Sudarshan Kedarnath Loya , Steven D. Johnson , Vijaya Kumar , Laura Elise Rasmussen , Adarsh Gopinathan Nair , Michael B. Goetzke
IPC分类号: F02M26/29
摘要: An EGR cooler may include an EGR cooler housing having top, bottom and side walls, inlet and outlet end walls disposed at opposite ends, and a longitudinal axis extending in a direction of exhaust gas flow from the inlet end to the outlet end. A plurality of cooling tubes extend through the EGR cooler between the top and bottom walls, and are arranged in a cooling tube array to form an exhaust gas receiving area at an upstream side of the cooling tube array proximate the inlet end wall so that exhaust gas flowing into the EGR cooler through an exhaust gas inlet opening will flow into the exhaust gas receiving area and then disperse through the cooling tube array. A pitch distance between the cooling tubes may be greater proximate the longitudinal axis than proximate the side walls to promote flow through, instead of around, the cooling tube array.
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公开(公告)号:US20190145358A1
公开(公告)日:2019-05-16
申请号:US16191159
申请日:2018-11-14
发明人: Oliver Grill
摘要: An exhaust gas recirculation cooler may include a heat exchanger block including a first mounting flange, a diffuser including a second mounting flange, and at least one non-return valve arranged between the heat exchanger block and the diffuser. The exhaust gas recirculation cooler may also include a valve carrier which supports the at least one non-return valve and on which a gasket is arranged. The heat exchanger block may be connected via the first mounting flange directly to the second mounting flange of the diffuser. The valve carrier may be arranged between the heat exchanger block and the diffuser, and with the gasket may seal a sealing point between the first mounting flange and the second mounting flange. The diffuser may include an outwardly closed recess with a peripheral rim structured to accommodate the valve carrier. The rim may define the second mounting flange.
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公开(公告)号:US20180195470A1
公开(公告)日:2018-07-12
申请号:US15913554
申请日:2018-03-06
CPC分类号: F02M26/49 , B60H1/00314 , B60H1/00978 , B60H1/025 , F01N3/005 , F01N3/038 , F01N5/02 , F01N11/002 , F01N2240/02 , F01N2240/22 , F01N2410/00 , F01N2560/06 , F01N2560/08 , F01N2900/1404 , F01N2900/1406 , F02M26/15 , F02M26/25 , F02M26/29 , Y02T10/16 , Y02T10/20 , Y02T10/47
摘要: Methods and systems are provided for carrying out on-board diagnostics of a plurality of components of an exhaust heat exchange system. In one example, degradation of one or more of a heat exchanger and a coolant system fluidically coupled to the heat exchanger may be detected based on a first temperature estimated upstream of the heat exchanger, a second temperature sensor estimated downstream of the heat exchanger, a coolant temperature, and a pressure estimated upstream of the heat exchanger. Also, degradation of a diverter valve of the heat exchange system may be detected based on inputs of a position sensor coupled to the diverter valve.
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公开(公告)号:US09957923B2
公开(公告)日:2018-05-01
申请号:US14805182
申请日:2015-07-21
摘要: The invention concerns a device for recirculation of exhaust gases from an engine (1) of a motor vehicle, comprising a first exhaust gas recirculation line (9) called an EGR line, a first heat exchanger (10) provided on said EGR line (9) to ensure cooling of the recirculated exhaust gases, and treatment means (11) for the exhaust gases allowing limitation of the pH of the condensate arising from said gases. The treatment means (11) are provided upstream of the first exchanger (10) along the path of the exhaust gases, and the exchanger (10) comprises a heat exchanger bundle made of aluminum and/or aluminum alloy.
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公开(公告)号:US20180106221A1
公开(公告)日:2018-04-19
申请号:US15782812
申请日:2017-10-12
发明人: Oliver Grill , Helmut Weiser
CPC分类号: F02M26/29 , F02M26/23 , F02M26/28 , F02M26/32 , F02M26/33 , F28D7/1684 , F28D7/1692 , F28D21/0003 , F28F1/122 , F28F1/124 , F28F1/426 , F28F9/005 , F28F9/0137 , F28F9/0265
摘要: An exhaust gas recirculation cooler may include a housing having a coolant inlet opening into an inlet region and a coolant outlet, and a plurality of cooling tubes arranged in the housing next to one another to form a tube row, each cooling tube connecting an exhaust gas inlet and outlet. At least two tube rows with one arranged on top of another and spaced from each other may form a tube block. Exhaust gas may be flowable through an inside of each cooling tube, and a coolant flow may be able to be circulated outside of the cooling tubes within the housing and flowable through an annular space enclosing the tube block in a circumferential direction. A flow guide arrangement for guiding the coolant in the interior of the tube block may be arranged in the housing lying against at least portions of one of the tube rows.
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公开(公告)号:US20180058389A1
公开(公告)日:2018-03-01
申请号:US15251387
申请日:2016-08-30
申请人: Caterpillar Inc.
发明人: Anthony L. DeLuca
CPC分类号: F02M26/29 , F28D7/16 , F28D21/0003 , F28F9/001 , F28F9/005 , F28F9/013 , F28F9/0137 , F28F2265/30
摘要: An Exhaust Gas Recirculation (EGR) cooler assembly and an EGR cooler conduit assembly are provided. Heat exchange tubes in EGR cooler assemblies may vibrate and contact the EGR cooler shell, thereby leading to the tube fretting and potentially failing. The current disclosure is directed to the use of damping rods to absorb vibratory impacts and reduce or eliminate tube fretting.
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公开(公告)号:US20170276094A1
公开(公告)日:2017-09-28
申请号:US15077287
申请日:2016-03-22
CPC分类号: F02M26/29 , B21D41/028 , B21D53/085 , F02M26/02 , F02M26/11 , F02M26/28 , F02M26/32 , F28D1/05316 , F28D1/05366 , F28D7/16 , F28D7/1615 , F28F1/006 , F28F1/08 , F28F2265/26 , F28F2275/125
摘要: Various methods and systems are provided for an exhaust gas recirculation cooler including a plurality of cooling tubes. In one example, an exhaust gas recirculation (EGR) cooler includes a plurality of cooling tubes positioned within a housing of the EGR cooler, each cooling tube of the plurality of cooling tubes extending between and directly coupled to tube sheets of the EGR cooler at ends of each cooling tube, where at least one end of one or more cooling tubes of a first portion of the plurality of cooling tubes, inward of a tube sheet coupled to the at least one end, includes a compliant region, where the first portion is positioned proximate to an exhaust inlet of the EGR cooler.
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