Patent ID: 11959419
Assignee: BJ ENERGY SOLUTIONS, LLC
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 5:
6. A method of recovering energy from exhaust gases of an engine of a mobile power system, the method comprising:
operating the engine, the engine having an intake port and an exhaust duct;
opening an inlet valve in fluid communication with the exhaust duct, thereby to divert a portion of an exhaust gas flowing from the exhaust duct to an exhaust energy recovery system (EERS);
collecting the portion of the exhaust gas in a manifold of the EERS, the manifold positioned downstream of the inlet valve;
distributing the exhaust gas from the manifold to a first heat exchanger and a second heat exchanger of the EERS, thereby to transfer heat from the exhaust gas to a fluid of a first fluid reservoir and a second fluid reservoir, respectively;
controlling flow of the exhaust gas from the manifold to the first heat exchanger and the second heat exchanger by operating a first control valve positioned between the manifold and the first heat exchanger and a second control valve positioned between the manifold and the second heat exchanger such that the controlling includes:
operating the first control valve towards an open position in response to the fluid in the first fluid reservoir being below a first temperature, and operating the first control valve towards a closed position in response to the fluid in the first fluid reservoir being at or above a second temperature, and operating the second control valve towards an open position in response to the fluid in the second fluid reservoir being below a third temperature, and operating the second control valve towards a closed position in response to the fluid in the second fluid reservoir being at or above a fourth temperature; and
opening a pressure relief valve of the EERS in response to a pressure of the exhaust gas within the EERS being at or above a predetermined pressure such that exhaust gas bypasses the first heat exchanger and the second heat exchanger and returns to the exhaust duct.