Title:
AIRFLOW SENSOR CHARACTERISTIC INFORMATION GENERATION SYSTEM AND ENGINE CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/079807
Kind Code:
A1
Abstract:
[Problem] To provide an airflow sensor characteristic information generation system for improving the responsiveness of an airflow sensor. [Solution] An airflow sensor characteristic information generation system W1 includes: a pressure step response device Z that changes, in a step-like manner, the pressure of a gas flowing in a pipe of piping 20; an airflow sensor 1 and a high-response flow meter 10 that measure an airflow rate flowing in the pipe of the piping 20; and a measurement device 110 that calculates airflow sensor characteristic information. The measurement device 110 includes: a data acquisition unit 110 that acquires a first airflow rate measured by the airflow sensor 1 while the pressure step response device Z is changing the pressure of the piping 20 in a step-like manner, and a second airflow rate measured by the high-response flow meter; and an airflow sensor characteristic information calculation unit 113 that, with the second airflow rate as a reference flow rate, calculates a regression transfer function of the airflow sensor 1 as the airflow sensor characteristic information, such calculation using the reference flow rate and the first airflow rate.
Inventors:
YASUNO KEISUKE (JP)
KOJIMA KEIICHIRO (JP)
KOJIMA KEIICHIRO (JP)
Application Number:
PCT/JP2020/038645
Publication Date:
April 21, 2022
Filing Date:
October 13, 2020
Export Citation:
Assignee:
A&D CO LTD (JP)
International Classes:
G01F1/68; F02D45/00; G01F25/00
Foreign References:
| JP2002333358A | 2002-11-22 | |||
| US20170241383A1 | 2017-08-24 |
Attorney, Agent or Firm:
IKUTA Tetsuo et al. (JP)
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