Tandem Type Hot-Wire Flowmeter for Measuring Intermittent Fuel Flow

To analyze the behavior of fuel flow in a transient operation of a gasoline engine, the authors have developed a flowmeter based on a new hot-wire principle to measure the flow rate of pulsating fuel passing through a carburetor or an injection fuel tube. The device, which consists of twin wires mounted in a tandem arrangement, not only judges the direction of flow but also introduces no significant disturbance. Furthermore, this probe shows a response quick enough to permit measuring the pulsating fuel flow. This paper outlines the device along with a few applications.