Method and systems for an energy recovery and energy converting unit for an engine

A method, comprising:

• after shutting down an engine and while the engine is shut down:
• adjusting one or more valves configured to adjust a flow of air through an engine bypass passage, the engine bypass passage fluidly coupled between an intake passage and exhaust passage of the engine, to flow air to a fuel burner fluidly coupled to the exhaust passage upstream of a first turbocharger turbine;
• operating the fuel burner to produce exhaust gas;
• recovering exhaust energy downstream of the fuel burner via a generator directly coupled to one of a shaft of the first turbocharger turbine, an auxiliary turbine coupled in series with the first turbocharger turbine, or an auxiliary turbine coupled in parallel with the first turbocharger turbine;
• and
• powering one or more electrical components of the engine while the engine is shut down using the recovered exhaust energy.

A system, comprising:

• a first turbocharger including a first turbine disposed in an exhaust passage and a first compressor disposed in an intake passage, the first compressor driven by the first turbine, where the exhaust passage is fluidly coupled to a plurality of cylinders;
• an engine bypass passage coupled between the intake passage and exhaust passage;
• a fuel burner disposed in one of:
• the engine bypass passage, the exhaust passage upstream of the first turbine and downstream of where the engine bypass passage couples to the exhaust passage, or in a second bypass passage fluidly coupled to the exhaust passage upstream of the first turbine and downstream of where the engine bypass passage couples to the exhaust passage;
• and
• a generator coupled to one of the first turbine or an auxiliary turbine coupled to the exhaust passage downstream of the fuel burner.