Patent ID: 11938447
Assignee: FAURECIA SYSTEMES D'ECHAPPEMENT
Field: Chemical engineering (Chemistry)
Classification: CPC B  F  Y | IPC B  F

Claim 0:
1. An injector of fluid in an exhaust pipe, the fluid being an aqueous urea solution, the injector comprising:
a single fluid inlet;
a fluid outlet;
an injection port to inject the fluid into the exhaust pipe;
an injection passage, fluidly connecting the single fluid inlet to the injection port;
a shut-off device comprising a shutter, movable between an open position authorizing circulation of fluid through the injection port and a closed position prohibiting the circulation of fluid through the injection port, and an actuator, configured to selectively move the shutter between the open and closed positions the actuator having a magnetic coil is arranged around an intermediate section of the injection passage extending along a central axis;
an outer shell, the shut-off device and the intermediate section of the injection passage being housed inside the outer shell;
a cooling passage, having an upstream portion fluidly branched to the injection passage and a downstream portion fluidly connected to the fluid outlet, the cooling passage being configured so that fluid flow along the cooling passage cools the actuator of the shut-off device the cooling passage comprising a cooling portion arranged around the magnetic coil such that the magnetic coil is cooled by circulation of fluid; and
a fluid pressure regulator interposed in the cooling passage.