(19)
(11) EP 1 970 548 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
23.09.2009 Bulletin 2009/39

(43) Date of publication A2:
17.09.2008 Bulletin 2008/38

(21) Application number: 08004783.0

(22) Date of filing: 14.03.2008
(51) International Patent Classification (IPC): 
F01P 3/12(2006.01)
 F01P 7/16(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 16.03.2007 JP 2007068710

(71) Applicant: Toyota Jidosha Kabushiki Kaisha
Toyota-shi, Aichi-ken 471-8571 (JP)

(72) Inventors:
  • Shintani, Osamu
    Toyota-shi Aichi-ken 471-8571 (JP)
  • Hamada, Shinichi
    Kariya-City Aichi-Pref. 448-8661 (JP)

(74) Representative: Kuhnen & Wacker 
Patent- und Rechtsanwaltsbüro Prinz-Ludwig-Strasse 40A
85354 Freising
85354 Freising (DE)

   


(54) Cooling apparatus for internal combustion engine


(57) A flow control mechanism (300) is disposed downstream of an exhaust heat recovery device (150) on a cooling water circuit (500b) between the exhaust heat recovery device (150) and a water pump (120). The flow control mechanism (300) controls a flow rate of cooling water in accordance with a cooling water temperature around the flow control mechanism (300). When the cooling water temperature is low, the flow control mechanism (300) does not limit the flow rate of the cooling water to perform exhaust heat recovery. When the cooling water temperature is increased, the flow control mechanism (300) limits the flow rate of the cooling water to stop the exhaust heat recovery. Further, the flow control mechanism (300) again increases the flow rate of the cooling water when the cooling water temperature is increased to around the boiling point of the cooling water while the exhaust heat recovery is stopped.







Search report