Title:
HEATING RESISTOR AIR FLOW RATE MEASURING INSTRUMENT AND INLET SYSTEM AND CONTROL SYSTEM OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP3523022
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a heating resistor air flow rate measuring instrument which has high accuracy, high reliability, and high mountability at a low cost.
SOLUTION: A heating resistor air flow rate measuring instrument is composed of a flowmeter body 86 and a measuring section 87 and constituted by arranging the frame body section 31 of a housing 3 housing an electronic circuit 6 and an auxiliary passage member 4 holding a heating resistor 1, etc., in an auxiliary air passage on a platy metallic base 5 and respectively joining the frame body section 31 and metallic base 4 with the auxiliary passage member 4 and a cover 9 over different two members. Then the measuring section 87 in which the connector section 32 and frame body section 31 of the housing 3 and the auxiliary passage member 4 are formed in flat shapes is inserted into the flowmeter body 86 through an inserting hole 83 so as to position the heating resistor 1, etc., in a main air passage 81 and the fixing flange 36 of the housing 3 is attached to the flowmeter body 86.
Inventors:
Igarashi, Shinya
Takasago, Akira
Ozawa, Masayuki
Uchiyama, Kaoru
Tsutsui, Mitsukuni
Takasago, Akira
Ozawa, Masayuki
Uchiyama, Kaoru
Tsutsui, Mitsukuni
Application Number:
JP17063097A
Publication Date:
April 26, 2004
Filing Date:
June 26, 1997
Export Citation:
Assignee:
HITACHI LTD
HITACHI CAR ENG CO LTD
HITACHI CAR ENG CO LTD
International Classes:
G01F1/68; F02D35/00; F02D41/18; G01F1/684; G01F1/699; G01F5/00; (IPC1-7): G01F1/68; F02D35/00
Attorney, Agent or Firm:
高田 幸彦 （外１名）