ATBECHDEDKESFRGBGRITLILUNLSEMCPTIESILTLVFIROMKCYALTRBGCZEEHUPLSKBAHRIS..MTNORSMESMMA....MD..........JJDIM360 Ver 1.28 (29 Oct 2014) - 1620000/03096000EUROPEAN PATENT APPLICATIONA320161221EP16164940.520160412enenen201510077520150518JP2016122120165120161123201647F02P 19/02 20060101AFI20161111BHEP F23Q 7/00 20060101ALI20161111BHEP deHEIZVORRICHTUNG, HEIZZUSTANDSSCHÄTZVORRICHTUNG UND HEIZZUSTANDSSCHÄTZVERFAHRENenHEATING DEVICE, HEATER STATE ESTIMATING DEVICE, AND HEATER STATE ESTIMATING METHODfrDISPOSITIF DE CHAUFFAGE, DISPOSITIF D'ESTIMATION DE L'ÉTAT D'UN DISPOSITIF DE CHAUFFAGE ET PROCÉDÉ D'ESTIMATION DE L'ÉTAT D'UN DISPOSITIF DE CHAUFFAGE6NGK Spark Plug Co., Ltd.100186736N407883EP MN14-18, Takatsuji-cho, Mizuho-kuNagoya-shi, Aichi 467-8525JPKAN, Yoheic/o NGK SPARK PLUG CO., LTD. Mizuho-kuNagoya-shi, Aichi 467-8525JPOTSUBO, Masanoric/o NGK SPARK PLUG CO., LTD. Mizuho-kuNagoya-shi, Aichi 467-8525JPNicholls, Michael John101280880J A Kemp 14 South Square Gray's InnLondon WC1R 5JJGBALATBEBGCHCYCZDEDKEEESFIFRGBGRHRHUIEISITLILTLULVMCMKMTNLNOPLPTRORSSESISKSMTRBAMEMAMD20161221201651

To improve accuracy of detecting the state of a heater, such as abnormality of a heating unit, wear of a base, and the like.

A heating device includes: a heater including an electric conductor, a heating unit that generates heat by energization, and a ceramic base that holds the electric conductor and the heating unit so that the electric conductor and the heating unit are buried in the ceramic base so as to be isolated from each other; and an energization unit that causes the heater to generate heat by energizing the heating unit. The heating device includes: a detection unit that detects an electric resistance of the base between the electric conductor and the heating unit; and an estimation unit that estimates a state of the heater on the basis of the electric resistance detected by the detection unit when the heating unit is energized under a predetermined condition.

N407883EP MNEP16164940.5NGK Spark Plug Co., Ltd.6MN20161117F02PF23QDE3742102A1BERU WERK RUPRECHT GMBH CO A [DE]19890622X1-7* column 1, line 61 - column 2, line 32 ** column 3, line 10 - column 4, last line ** figures 2-4 ** claims *DE102013200277A1EGO ELEKTRO GERAETEBAU GMBH [DE]20140130X1,6,7* paragraph [0004] - paragraph [0024] ** claim 12 ** figures *DE19737396A1DENSO CORP [JP]19980319X1,2,5-7* column 6, line 26 - column 12, line 42 ** figures ** claim 2 *EP1136697A2NGK SPARK PLUG CO [JP]20010926A1-7* paragraph [0006] - paragraph [0043] *De Vita, DiegoMunich20161108DE3742102A119890622NONEDE102013200277A120140130NONEDE19737396A119980319DE19737396A119980319JP3605965B220041222JPH1089227A19980407US5922229A19990713EP1136697A220010926DE60129065T220080228EP1136697A220010926JP2001336468A20011207US2002043524A120020418