EJECTOR FOR FUEL CELL SYSTEM

摘要

An ejector for supplying a fuel, such as hydrogen, to a stack in a fuel cell system can automatically move a position of a nozzle according to an increase or a decrease of a system load. As a result, it is possible to control a necessary supply of hydrogen and a recirculation flow rate by selecting an area of a nozzle throat in the fuel cell system using the ejector, and specifically, of being automatically controlled to supply hydrogen through a small nozzle at a low load, such that a recirculation amount is increased.

主权项

1. An ejector for a fuel cell system, the ejector comprising:
an ejector body having a hydrogen outlet on a front end and a recirculation hydrogen inlet on a rear end; and a nozzle installed in the ejector body to communicate with a flow control valve for controlling a supply of hydrogen, wherein the nozzle comprises: a nozzle body having a hydrogen flow path; and a nozzle device installed at the nozzle body and configured to provide a hydrogen flow path, the nozzle body varying an area of a nozzle throat according to an increase or decrease of a system load such that the supply of hydrogen and a recirculation flow rate are controlled.