Patent ID: 11946404
Assignee: CUMMINS FILTRATION IP, INC.
Field: Environmental technology (Chemistry)
Classification: CPC F  Y | IPC F

Claim 14:
15. A method of purging particles from a dosing line connected to a nozzle, comprising:
opening an air valve of a fuel dosing module, the air valve positioned upstream of an outlet of the fuel dosing module and downstream of an air inlet configured to receive air;
opening a fuel valve of the fuel dosing module from a closed position subsequent to opening the air valve, the fuel dosing module in fluid communication with the dosing line, the fuel valve positioned upstream of the outlet and downstream of a fuel inlet, the fuel inlet configured to receive fuel and the outlet in fluid communication with the dosing line;
initiating a cleaning cycle by oscillating the fuel valve by opening and closing at a frequency, thereby generating an air-fuel fluid, wherein the air-fuel fluid removes particles from along the dosing line and the nozzle, the air-fuel fluid generated as a result of the oscillation of the fuel valve, allowing a flow of air-fuel fluid to the outlet;
initiating a dosing operation by opening the fuel valve, the dosing operation comprising injecting fuel from the fuel inlet to the nozzle, via the dosing line;
initiating an air purge operation after oscillating the fuel valve to generate the air-fuel fluid, the air purge operation comprising injecting air from the air inlet to the nozzle to purge the fuel from the dosing line and the nozzle; and
maintaining the air valve open during transitions between the cleaning cycle and the air purge operation.