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公开(公告)号：JP5505097B2
公开(公告)日：2014-05-28
申请号：JP2010126949
申请日：2010-06-02
Applicant: トヨタ自動車株式会社
IPC: F02M25/07
CPC classification number: Y02T10/121
Abstract: PROBLEM TO BE SOLVED: To solve the problem with a conventional EGR gas cooling structure, wherein a flat pipe which is laminated and arranged and which serves as a cooling tube of an EGR gas expands outward in a laminating direction and an inner diameter of the flat pipe in the laminating direction is enlarged, and thereby cooling performance of the EGR gas circulating in the flat pipe is reduced.SOLUTION: A cooling structure of the EGR gas includes an EGR gas cooler 31. The cooler is constructed as follow: a plurality of cooling tubes 32, each which serves as a passage of the EGR gas and is formed in a flat-pipe shape, is laminated each other; and both ends of the laminated plurality of cooling tubes 32 in an EGR-gas flow direction are each fixed by end-fixing plates 33. In the cooling structure, the EGR gas cooler 31 is installed in a water jacket 15 such that coolant flowing in the water jacket 15 formed on a cylinder head 11 of an engine comes in contact with the cooling tube 32. In addition, the cooling structure has supporters 11a and 11b for supporting the cooling tube 32 toward the inside in the laminating direction, between the end-fixing plate 33 and the end-fixing plate 33 which are arranged on both of the ends of the cooling tube 32.
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公开(公告)号：JP5510027B2
公开(公告)日：2014-06-04
申请号：JP2010098287
申请日：2010-04-21
Applicant: トヨタ自動車株式会社
CPC classification number: Y02T10/121
Abstract: PROBLEM TO BE SOLVED: To provide an EGR cooler that includes a plurality of heat transmission pipes, that can reliably cool peripheral part of each heat transmission pipe and that can reliably prevent thermal deformation of the heat transmission pipes.SOLUTION: The EGR cooler includes: the plurality of heat transmission pipes 5, inside which an EGR gas circulates; a casing 2 that houses each of the heat transmission pipes 5; and end plates 3, 4 that support each of the pipes 5 at both ends in the casing 2. In the EGR cooler 1, a flow path for a cooling water is formed by the casing 2 and both end plates 3, 4. In the end plate 3, a cooling water groove 7 is formed to circulate the cooling water in thickness of the end plate 3.
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公开(公告)号：JP5477466B2
公开(公告)日：2014-04-23
申请号：JP2012515653
申请日：2010-05-17
Applicant: トヨタ自動車株式会社
CPC classification number: F01P3/20 , F01P3/02 , F01P2003/024 , F01P2060/16 , F02M26/30 , F02M26/32 , F02M26/41 , Y10T29/4927
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Patent Agency Ranking
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公开(公告)号：JPWO2011145163A1
公开(公告)日：2013-07-22
申请号：JP2012515653
申请日：2010-05-17
Applicant: トヨタ自動車株式会社
CPC classification number: F01P3/20 , F01P3/02 , F01P2003/024 , F01P2060/16 , F02M26/30 , F02M26/32 , F02M26/41 , Y10T29/4927
Abstract: 従来、冷却性能が高く、かつ容易に構成することができるEGRガス冷却構造を有するシリンダヘッドを製造することが困難であった。そこで、EGRガス冷却構造を有するシリンダヘッドを、排気ポートから排出された排気ガスの一部を吸気ポート側へ案内するためのガス通路を、シリンダヘッドウォータージャケット内に配置して、前記ガス通路内を流通する排気ガスの冷却を行う、EGRガス冷却構造を有するシリンダヘッドであって、前記ガス通路は、前記シリンダヘッドウォータージャケット内の冷却水と接触する冷却部と、前記冷却部の側部に位置し、前記冷却部よりも高い強度を有する高強度部とを備えた中空管にて構成され、前記ガス通路の高強度部が、前記シリンダヘッドに鋳包まれているものとした。
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公开(公告)号：JP5598510B2
公开(公告)日：2014-10-01
申请号：JP2012187347
申请日：2012-08-28
Applicant: トヨタ自動車株式会社
CPC classification number: F02F1/36 , F01M11/02 , F01M2011/023
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公开(公告)号：JP5278299B2
公开(公告)日：2013-09-04
申请号：JP2009286217
申请日：2009-12-17
Applicant: トヨタ自動車株式会社
Abstract: PROBLEM TO BE SOLVED: To provide cooling structure of a cylinder head, capable of favorably cooling the circumference of an exhaust port. SOLUTION: On an exhaust port side of a cylinder head 30 used for an internal combustion engine 10, a first water jacket 50 is provided to extend from one end side to the other end side in a cylinder row direction. A cooling water inlet port 57 leading cooling water into the first water jacket 50 is disposed on one end side in the cylinder row direction, and one side in a forming region which is divided by a straight line L1 connecting the centers of valve stems 36a of a plurality of exhaust valves 36 positioned inside the forming region of the first water jacket 50 of the cylinder head 30. Further, a cooling water discharge port 58 discharging the cooling water from the first water jacket 50 is disposed on the other end side in the cylinder row direction, and on the other side in the forming region divided by the straight line L1. COPYRIGHT: (C)2011,JPO&INPIT
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