Development of High-Temperature Ultrasonic Flowmeter for Measuring Flowrate of Automotive Exhaust Gas

Abstract

The purposes of the present study are to develop the ultrasonic flowmeter measuring directly the exhaust gas flowrate. The digital signal processing was improved toward practical use and its evaluation test was carried out. The validation tests of the developed high-temperature ultrasonic flowmeter were performed with the exhaust gas flow simulator, in order to demonstrate its possibility, and its effectiveness was surely confirmed.