(19)
(11) EP 2 202 461 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.09.2010 Bulletin 2010/38

(43) Date of publication A2:
30.06.2010 Bulletin 2010/26

(21) Application number: 10156649.5

(22) Date of filing: 22.11.2005
(51) International Patent Classification (IPC): 
F23Q 7/00(2006.01)
H01L 23/36(2006.01)
F02P 19/02(2006.01)
 F23Q 7/24(2006.01)
F02P 17/12(2006.01)
(84) Designated Contracting States:
DE FR GB
Designated Extension States:
AL BA HR MK YU

(30) Priority: 25.11.2004 JP 2004340404

(62) Application number of the earlier application in accordance with Art. 76 EPC:
05025454.9 / 1669675

(71) Applicant: Denso Corporation
Kariya-city, Aichi 448-8661 (JP)

(72) Inventor:
  • Hiramatsu, Hiromi
    Kariya-city Aichi 448-8661 (JP)

(74) Representative: TBK-Patent 
Bavariaring 4-6
80336 München
80336 München (DE)

   


(54) Glow plug for diesel engine with integrated electronics and heat sink


(57) According to the present invention, a glow plug (100) for a diesel engine is provided which includes a heating element (22), a semiconductor chip (61) that includes therein a power transistor, and a heat sink (50). The heating element (22) is configured to generate heat when supplied with electric power, so as to heat the air-fuel mixture within a cylinder of the diesel engine. The power transistor in the semiconductor chip (61) is configured to be selectively turned on and off so as to intermittently supply electric power to the heating element. The heat sink (50) serves to dissipate heat generated by operation of the semiconductor chip (61) so as to prevent the semiconductor chip (61) from being damaged due to the heat. With such a configuration, it becomes possible to integrate the semiconductor chip (61) into the glow plug (100) while providing the glow plug (100) with a capability of effectively dissipating the heat generated by operation of the semiconductor chip (61).







Search report