Title:
EXHAUST HEAT EXCHANGER
Document Type and Number:
Japanese Patent JP3956097
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve the boiling resistance of an EGR cooler by preventing local boiling of cooling water.
SOLUTION: The measurements δin1 of a clearance 12g extending in a direction generally parallel with an inflow direction of cooling water flowing in from a cooling water inflow port 12d is made to be equal to the measurements δt of a clearance 11a between exhaust tubes 11. Concretely, the measurements δin1 is made to be between 1 mm and 5 mm. Therefore, the flow velocity of the cooling water flowing in the clearance 12g can be prevented from decreasing below a specified flow velocity, so that the cooling water can be prevented from locally boiling in the clearance 12g.
Inventors:
Akihiro Maeda
Takayuki Hayashi
Takayuki Hayashi
Application Number:
JP2002000494A
Publication Date:
August 08, 2007
Filing Date:
January 07, 2002
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F02M25/07; F02M31/20; F28D7/16; F28D9/00; F28F9/00; (IPC1-7): F02M25/07; F02M31/20; F28F9/00
Domestic Patent References:
| JP2001241872A | ||||
| JP2001027157A | ||||
| JP2001248980A | ||||
| JP2002107091A |
Attorney, Agent or Firm:
Hirohiko Usui
Takashi Ito
Takashi Ito