Patent ID: 11939209
Assignee: WAYNE FUELING SYSTEMS LLC
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 14:
15. A fuel dispensing system, comprising:
a fuel line configured for carrying a fuel to be dispensed from the fuel dispensing system;
a storage tank containing a fuel additive to be injected into the fuel;
an assembly of multiple metering pumps coupled to the storage tank and configured to inject the fuel additive into the fuel, the assembly of multiple metering pumps arranged in a laterally stacked configuration, each of the metering pumps of the assembly of multiple metering pumps comprising:
a pump body,
an inlet at which the fuel additive enters the respective metering pump and an outlet at which the fuel additive exits the respective metering pump, the inlet and the outlet being coupled to the pump body,
a piston bore within the pump body,
a piston contained within the piston bore, the piston being configured to draw the fuel additive into the respective metering pump through the inlet and to dispense the fuel additive from the respective metering pump through the outlet,
an inflow valve coupled to the pump body and configured to permit the fuel additive to flow in a single direction away from the inlet and to prevent the fuel additive from flowing in an opposite direction back into the inlet, and
an outflow valve coupled to the pump body and configured to permit the fuel additive to flow in the single direction towards the outlet,
wherein the metering pump comprises a configuration in which the inlet, the outlet, the piston, the piston bore, the inflow valve, and the outflow valve are centrally positioned along a central plane of the pump body; and

a control module configured to control operation of the assembly of multiple metering pumps.