Title:
エンジンの冷却装置
Document Type and Number:
Japanese Patent JP4384230
Kind Code:
B2
Abstract:
An engine cooling device is provided, which uses a fewer number of ducts for coolant circulation to reduce cost and weight and to make the duct layout easy, and which improves the durability of a differential pressure valve. In the engine cooling device in which a coolant is circulated by a water pump 4 through a coolant circulation flow path 9 at least including a heater circulation flow path 7 that circulates the coolant between a cooling jacket 1 provided at least to one of a cylinder head and a cylinder block of the engine and a heater core 6, a bypass flow path 8 that communicates the cooling jacket 1 with a portion of the heater circulation flow path 7 downstream of the heater core 6 is provided, and a differential pressure valve 11 that opens when fluid pressure on the side of the cooling jacket 1 exceeds a predetermined value is disposed at a point of exit of the coolant from the cooling jacket 1 to the bypass flow path 8.
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Inventors:
Hideki Terada
Takao Okuno
Takao Okuno
Application Number:
JP2008070685A
Publication Date:
December 16, 2009
Filing Date:
March 19, 2008
Export Citation:
Assignee:
Daihatsu Motor Co., Ltd.
TOYOTA JIDOSHA KABUSHIKI KAISHA
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F01P7/14; F01P3/20
Domestic Patent References:
| JP8177491A |
Attorney, Agent or Firm:
Masaki Hiroyuki
Masaru Ishihara
Masaru Ishihara