Reversible waste heat recovery system and method

An internal combustion engine, comprising:

• an exhaust gas circuit;
• a heat exchanger positioned along the exhaust gas circuit;
• an exhaust gas receiving portion positioned along the exhaust gas circuit downstream of the heat exchanger;
• and
• a waste heat recovery (WHR) system including a working fluid circuit extending through the heat exchanger, an expansion valve positioned along the working fluid circuit downstream from the heat exchanger, an evaporator positioned along the working fluid circuit downstream from the expansion valve, and a compressor positioned along the working fluid circuit between the evaporator and the heat exchanger, downstream from the evaporator.

An internal combustion engine, comprising:

• an exhaust gas circuit;
• a heat exchanger positioned along the exhaust gas circuit;
• an exhaust gas receiving portion positioned along the exhaust gas circuit downstream of the heat exchanger;
• and
• a waste heat recovery (WHR) system including a working fluid circuit extending through the heat exchanger, a switching valve positioned along the working fluid circuit, a first branch and a second branch extending between the switching valve and the heat exchanger, an energy conversion portion positioned along the first branch downstream from the switching valve, a fluid containment and cooling system (FCCS) positioned along the first branch between the energy conversion portion and the switching valve, a feed pump positioned along the first branch between the FCCS and the switching valve, an expansion valve positioned along the second branch downstream from the switching valve, a compressor positioned along the second branch downstream of the expansion valve, and an evaporator positioned along the second branch between the expansion valve and the compressor.