SYSTEMS AND METHODS FOR INCREASING DIESEL EXHAUST FLUID DELIVERY CAPACITY

A diesel exhaust fluid (DEF) delivery system and method for operating same. The method includes controlling a pump to operate at an idle speed to pressurize a pressure line. The method includes controlling a backflow dosing module (BFDM) valve to open to allow an amount of the DEF to flow into a fluid storage tank through a backflow line. The method includes determining a dosing request, a first dosing actuation request for the first dosing valve and a second dosing actuation request for the second dosing valve based on the dosing request. The method includes, when a sum of the first and second dosing actuation requests is less than 100%, controlling the BFDM valve to close when either of the first and second dosing valves is open; and controlling the BFDM valve to open when the first dosing valve is closed and the second dosing valve is closed. 种柴油机排气处理液（DEF）递送系统和用于运行该系统的方法。所述方法包括：控制泵怠速运行以对压力管线加压。所述方法包括：控制回流配量模块（BFDM）阀打开以允许所述DEF的量通过回流管线流到流体储罐内。所述方法包括：基于所述配量请求来确定配量请求、用于所述第配量阀的第配量致动请求以及用于所述第二配量阀的第二配量致动请求。当所述第和