公开(公告)号：JP2005041401A

公开(公告)日：2005-02-17

申请号：JP2003279191

申请日：2003-07-24

Applicant: Denso Corp ,  Toyota Motor Corp ,  トヨタ自動車株式会社 ,  株式会社デンソー

Inventor： KUNIKATA YUHEI ,  SUGIYAMA TOSHIKI ,  MAEDA AKIHIRO ,  HOSHI JUN

IPC: B62D25/08 ,  B60K11/02 ,  B60K11/04

CPC classification number: B60K11/02

Abstract: PROBLEM TO BE SOLVED: To improve cooling capacity of a cooling system of a vehicle.
SOLUTION: The lower end 4e of a wall surface 4c located on the vehicle front side is positioned on the lower side than the lower end 4f of a wall surface 4d located in the vehicle back side, and the wall surface 4c located on the vehicle front side and the wall surface 4d located in the vehicle back side form a step. Thus, speed of travel wind flowing near a discharge port 4a becomes higher than speed of travel wind flowing in a part separated from the discharge port 4a. Therefore, pressure of the travel wind flowing near the discharge port 4a decreases, so that air in a ventilating duct 4 flows so that it is sucked into the proximity of the discharge port 4a having reduced pressure and is discharged out of the ventilating duct 4. Therefore, cooling wind (including travel wind) feedable to a radiator 1 or a capacitor 3 can be increased, so that heat dissipation capacity of the radiator 1 or the like, namely the cooling capacity of the cooling system can be increased.
COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提高车辆的冷却系统的冷却能力。 解决方案：位于车辆前侧的壁表面4c的下端4e位于比位于车辆后侧的壁面4d的下端4f的下侧，并且位于 车辆前侧和位于车辆后侧的壁面4d形成台阶。 因此，在排出口4a附近流动的行驶速度变得高于在与排出口4a分离的部分中流动的行驶风的速度。 因此，在排出口4a附近流动的行驶风的压力减小，使得通气导管4内的空气流动，使其被吸入减压排出口4a附近，并排出通风管道4。 因此，可以提高供给散热器1或电容器3的冷却风（包括行驶风），从而可以提高散热器1等的散热能力，即冷却系统的冷却能力。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2003106794A

公开(公告)日：2003-04-09

申请号：JP2001364565

申请日：2001-11-29

Applicant: DENSO CORP

Inventor： OKOCHI SHIGEKI ,  MAEDA AKIHIRO ,  HAYASHI TAKAYUKI ,  SHIBAGAKI KAZUHIRO

IPC: F02M25/07 ,  F28D9/00 ,  F28F3/02 ,  F28F13/12

Abstract: PROBLEM TO BE SOLVED: To prevent attachment of PM on an inner fin. SOLUTION: A louver 111c is formed in an approximately triangle shape so that a distance from a planar plate part 111a increases as close to a downstream side of an EGR gas flow, and a plurality of pairs of two louvers 111c are provided with the two louvers 111c arranged in a truncated chevron shape so as to abut on an exhaust flow. Thereby a longitudinal vortex attracting the EGR gas flow between the louvers 111c (a vortex which looks to swirl in a plane orthogonal to the EGR gas flow when viewed from the EGR gas flow) is generated, and EGR gas distributing in a periphery of the planer plate part 111a and the EGR gas distributing in a periphery of a vertical plate part 111b are accelerated. Therefore, heat transfer coefficient of the EGR gas and a fin 111 can be improved, and the PM attached on a surface of the fin 111 can be blown out. Thus, heat exchange efficiency of a gas cooler can be improved while preventing clogging of the fin 111.

公开(公告)号：JP2003090693A

公开(公告)日：2003-03-28

申请号：JP2002007333

申请日：2002-01-16

Applicant: DENSO CORP

Inventor： MAEDA AKIHIRO ,  HAYASHI TAKAYUKI

IPC: F02M25/07 ,  F28D7/16 ,  F28D9/00 ,  F28F1/02 ,  F28F9/22 ,  F28F27/02

Abstract: PROBLEM TO BE SOLVED: To prevent the boiling of cooling water. SOLUTION: Ribs 108a, 108b are formed on an exhaust gas tube 101 through punching at a site of the side of an exhaust gas inlet port 106a. The flow of cooling water, collided against a wall surface 102a opposed to a cooling water inlet pipe 104, is branched between the outermost side exhaust gas tube 101 and the inner wall surface of a tank 102. Successively, the flow of refrigerant C flows along the ribs 108a, 108b without causing any interference between the flow of cooling water A entering from the cooling water inlet pipe 104. As a result, the stagnation of the cooling water will not be generated in the upstream side vicinity of the exhaust gas tube 101 whereby the boiling of the cooling water can be restrained.

公开(公告)号：JP2002028775A

公开(公告)日：2002-01-29

申请号：JP2001057725

申请日：2001-03-02

Applicant: DENSO CORP

Inventor： MAEDA AKIHIRO ,  SAKAMOTO ZENJI ,  OBAYASHI SHINKICHI ,  KAJIKAWA SHUNJI

IPC: F28F9/02 ,  B23K1/00 ,  B23K1/19 ,  B23K1/20 ,  B23K35/00 ,  B23K35/30 ,  B23K35/32 ,  B23K101/14 ,  F02M25/07 ,  F28D1/06 ,  F28D7/16 ,  F28F3/02 ,  F28F21/08

Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing an inexpensive, highly corrosion resistant heat exchanger formed of stainless steel. SOLUTION: A chromium brazing filler metal layer 21 is formed after applying the Cr electroplating of a plating thickness of 15 μm on both end faces of first and second forming stainless steel plates 1 and 2 alternately stacked on each other in the thickness direction, and then a nickel brazing filler metal layer 22 is formed after applying the Ni-P plating of a plating thickness of 35 μm on the chromium brazing filler metal layer 21. The highly corrosion resistant heat exchanger is manufactured by applying the integral brazing with the chromium brazing filler metal layer 21 and the nickel brazing filler metal layer 22 interposed between the first and second forming plates 1 and 2. A highly corrosion resistant brazing filler metal 31 having an alloy composition consisting of Ni-Cr28-P8, etc., is obtained on both end faces of the first and second forming plates 1 and 2. A fine metal structure in the highly corrosion resistant brazing filler metal 31 can be realized, and generation of cracks in the interface of the metal structure can be reduced.

公开(公告)号：JP2001174169A

公开(公告)日：2001-06-29

申请号：JP36169199

申请日：1999-12-20

Applicant: DENSO CORP

Inventor： MAEDA AKIHIRO ,  OKOCHI SHIGEKI ,  UCHIMURA KATSUNORI ,  SHIBAGAKI KAZUHIRO

IPC: F28F1/32 ,  F02M25/07 ,  F28D1/053 ,  F28D9/00 ,  F28F3/02 ,  F28F9/00 ,  F28F9/24 ,  F28F13/06

Abstract: PROBLEM TO BE SOLVED: To improve the heat exchanging efficiency (cooling capacity) of an EGR gas cooler. SOLUTION: There is provided a guide seal wall 113 for preventing the flow of EGR gas, flowing into a core casing 143 (an exhaust passage 110) while detouring a gap 112 between tubes 110 with a high flow resistance. According to this method, much of the EGR gas, which has flowed into the core casing 143, can be prevented from flowing through a site (a gap 144 between cores) having no inner fins 111 and reduced in a heat exchanging efficiency. Accordingly, much of the EGR gas can be conducted to flow through the gap 112 between the tubes 110 having a high heat exchanging efficiency whereby the heat exchanging efficiency (the cooling performance) can be improved and the EGR gas can be cooled sufficiently.