Patent ID: 11952951
Assignee: ACHATES POWER INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 6:
7. A method of operating a fuel-injected, opposed-piston engine comprising a control unit to execute the method, a supercharger coupled to pump air to cylinders of the engine through a charge air cooler, a bypass channel to recirculate charge air from an outlet of the supercharger to an inlet of the supercharger, and an aftertreatment system of thermally-activated devices coupled to receive exhaust from the cylinders, the method comprising:
injecting fuel into the engine while operating the engine in a two-stroke cycle mode;
operating the supercharger to provide a mass airflow to the engine;
transporting a mass exhaust flow from the engine to an inlet of the aftertreatment system;
ceasing fuel injection into the engine while operating the engine; and,
maintaining a thermal state of the mass exhaust flow sufficient to sustain thermal activation of one or more of the aftertreatment system devices during cessation of fuel injection by recirculating a portion of the mass airflow through the bypass channel to the inlet of the supercharger.