Mahle International Gmbh

Harald Scherg-Kurmes

Michael Hoetger

Michael Bucher

Hannes Marlok

Gerd Wierczorek

Jana Mertens

Gerd Wieczorek

A method for operating a heat recovery system for the utilization of waste heat of a heat engine of the heat recovery system may include discharging a carrier fluid via the heat engine, feeding the carrier fluid to an evaporator of a cyclic process of the heat recovery system, vaporizing a working fluid of the cyclic process via the evaporator and the waste heat, feeding the working fluid to an expansion engine of the cyclic process after vaporizing the working fluid, determining at least one carrier state variable of the carrier fluid at the evaporator, and setting at least one operating parameter of the heat recovery system based on the at least one determined carrier state variable.

Method for the utilization of waste heat of a heat engine

A method for operating an internal combustion engine having a waste heat utilization device including a waste heat utilization cycle in which a valve mechanism, an evaporator, and an expander are arranged, may include adjusting the valve mechanism between an evaporator position and a bypass position via a control/regulating device as a function of at least one operating parameter of the internal combustion engine. The method may also include calculating at least one of a power and an energy generatable by the waste heat utilization device via the control/regulating device as a function of the at least one operating parameter of the internal combustion engine. The method may further include switching the expander between an active state and an inactive state via the control/regulating device as a function of the at least one of the calculated power and the calculated energy.

Waste heat utilization device

Growing community of inventors

Berlin, Germany

Harald Scherg-Kurmes