HEATING DEVICE AND TEMPERATURE ESTIMATION DEVICE

Japanese Patent JP2017166758

A

PROBLEM TO BE SOLVED: To accurately control a temperature of a heater disposed on a glow plug, or to improve accuracy in temperature estimation of the heater.SOLUTION: In a heating device 100 provided with a glow plug 1 including a ceramic heater 40 having a substrate 42 in which a heating element 441 is buried at its tip side, and an outer cylinder 30 holding the ceramic heater 40, and energization means making the ceramic heater 40 generate heat by energizing the heating element 441, the glow plug 1 is provided with a film 90 which is the conductive film 90 disposed on an outer surface of the substrate 42, and kept into contact with the outer cylinder 30 while covering a part of the outer surface of the substrate 42 opposed to at least the heating element 441. Acquiring means for acquiring an electric resistance value of the substrate 42 is further disposed between the film 90 and the heating element 441. The energization means controls the energization to the heating element 441 so that the electric resistance value acquired by the acquiring means becomes a prescribed value.SELECTED DRAWING: Figure 2

OTSUBO MASANORI

JP2016053189A

September 21, 2017

March 17, 2016

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NGK SPARK PLUG CO

F23Q7/00; F02P19/00; H05B3/00; H05B3/48

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JP2009036092A	2009-02-19
JP4555641B2	2010-10-06
JPH0133304B2	1989-07-12
JP6590521B2	2019-10-16
JP6573512B2	2019-09-11
JP6568435B2	2019-08-28
JPH0135200B2	1989-07-24
JP2012145035A	2012-08-02
JPH01280682A	1989-11-10
JP2001330248A	2001-11-30
JP2002013735A	2002-01-18
JP2004259610A	2004-09-16

US6884967B1	2005-04-26
DE3742102A1	1989-06-22
US20020130120A1	2002-09-19
US5645742A	1997-07-08

Aoki Noboru

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