| 摘要 |
<p>The present invention provides a flowmeter (10) which measures the flowrate of a fuel injector (12) by monitoring the pressure drop across a variable orifice valve (52) by use of a pressure sensor (18) with no moving mechanical parts. The present invention has a fuel injector adapter (14) for receiving the fuel injector (12), a flow measurement chamber (22) which fluidly communicates with the injector (12) through the fuel injector adapter (14), a pressure sensor (18) for sensing the pressure of fuel inside the flow measurement chamber (22), and a variable orifice (20) which regulates the pressure in the flow measurement chamber (22). The variable orifice (20) selectively adjusts the pressure drop of the flowrate exiting the flow measurement chamber (22), thereby selectively adjusting the flow and pressure ratios.</p> |
