Heat exchanger method and apparatus

Details Heat exchanger method and apparatus Heat exchanger method and apparatus

2007-05-01

2007-05-01

Wolfe, Jr., Willis R. (Department: 3747)

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

C060S320000, C060S605200

Reexamination Certificate

active

11256916

ABSTRACT:
A method for an internal combustion engine includes the steps of collecting exhaust gas in a volume (502) and flowing exhaust gas out of the volume in a first and a second portions (504). The first portion forms a tailpipe gas stream (506), and the second portion forms an EGR gas stream (508). The tailpipe gas stream goes through a turbine (510), and is heated in a heat exchanger (512). The heat exchanger transfers thermal energy out of the EGR gas stream (516) to heat the tailpipe gas stream. The EGR gas stream is recirculated into an intake of the internal combustion engine (518).

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