To provide an injection nozzle characteristic measuring device capable of accurately actually measuring injected liquid flow rate in relation to needle lift amount of a injection nozzle by always supplying liquid of fixed pressure to the injection nozzle during measurement.
The injection nozzle characteristic measuring device is provided with a liquid supply route 3 for supplying liquid to the injection nozzle 2, a pressure detection means 11 for detecting pressure in the liquid supply route, a flow rate detection means 9 for detecting injected liquid flow rate, and a continuous pumping means 4 capable of continuously pumping liquid of necessary quantity to the liquid supply route to keep pressure in the liquid supply route constant based on output of the pressure detection means while injected liquid flow rate in relation to needle lift amount is measured by the flow rate detection means.
IGAMI AKIHIRO
MATSUURA KOJI
Jun Tsuruta
Tetsuro Shimada
Masaya Nishiyama