Condensation control for internal combustion engines using egr

Details Condensation control for internal combustion engines using egr Condensation control for internal combustion engines using egr

F - Mech Eng,Light,Heat,Weapons

02

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F02D 28/00 (2006.01) F02B 29/04 (2006.01) F02D 41/00 (2006.01) F02M 25/06 (2006.01) F02M 25/07 (2006.01) F02B 37/24 (2006.01)

Patent

CA 2411246

A system and method for controlling an internal combustion engine to reduce or eliminate formation of EGR condensate monitor current ambient and operating conditions to determine whether conditions are favorable for condensation of EGR gases, and control the engine accordingly to avoid condensation, preferably by increasing the intake manifold temperature. the intake manifold temperature may be increased by redirecting soma or all of the EGR flow to avoid the EGR cooler. Alternatively, or in combination, some or all of the charge air. may be redirected to bypass the charge air cooler and/or redirected from the outlet of the turbocharger compressor to the intake, effectively increasing the intake air temperature and resulting in a corresponding increase of the intake manifold temperature. Conditions favorable for condensation may be determined based on engine speed and load, ambient temperature, manifold pressure, scheduled or actual EGR flow rate and scheduled or actual air/fuel ratio.

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