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Title:
ELECTRIC HEATER AND INTERNAL COMBUSTION ENGINE EXHAUST EMISSION CONTROL SYSTEM
Document Type and Number:
Japanese Patent JP2015222053
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To reduce the size of an electric heater while intensifying heating action.SOLUTION: An electric heater is configured so that a support 20 is fixed into a casing 10, a first electric heating body 30a is disposed on an upstream side of the support 20, and a second electric heating body 30b is disposed on a downstream side of the support 20. Each heating body 30a, 30b includes an outer cylinder and a band heating element. Each outer cylinder is disposed within the casing 10 so that a central axis of the outer cylinder is parallel to a longitudinal axis of the casing 10. Each heating element includes two end portions fixed to an inner circumferential surface of the corresponding outer cylinder, and an intermediate portion extending between the two end portions without being fixed to the corresponding outer cylinder. Each intermediate portion is wound around a winding axis parallel to a central axis of the corresponding outer cylinder. The electric heater includes a support tool 40 extending from the first heating body 30a to the second heating body 30b via the support 20. The support tool 40 is fixed to the intermediate portion of the first heating body 30a and the intermediate portion of the second heating body 30b, thereby allowing the support 20 to support the first heating body 30a and the second heating body 30b via the support tool 40.

Inventors:
IMAI DAICHI
ITO KAZUHIRO
NISHIOKA HIROMASA
Application Number:
JP2014107054A
Publication Date:
December 10, 2015
Filing Date:
May 23, 2014
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
F01N3/20; F01N3/027
Domestic Patent References:
JP2013036468A2013-02-21
JPH11500205A1999-01-06
JP2001244047A2001-09-07
Foreign References:
US6446431B12002-09-10
Attorney, Agent or Firm:
青木 篤
鶴田 準一
島田 哲郎
三橋 真二
森本 有一
伊藤 公一