Method for control post injection of diesel engine

摘要

A method of controlling post injection in a diesel engine, including: storing an engine coolant temperature and a Selective Catalytic Reduction (SCR) temperature when the engine is turned off; calculating an SCR temperature and a coolant temperature when the engine is restarted, based on the temperatures when the engine is turned off, and if the coolant temperature when restarting is higher than a reference coolant temperature, and the SCR temperature when restarting is below a reference SCR temperature, using the SCR temperature when restarting as a factor in controlling the post injection.