Method for controlling injection in a diesel engine exhaust...

Details Method for controlling injection in a diesel engine exhaust... Method for controlling injection in a diesel engine exhaust...

2011-03-22

2011-03-22

Tran, Binh Q (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S277000, C060S285000, C060S295000

Reexamination Certificate

active

07908846

ABSTRACT:
A method for controlling injection of a substance in a diesel engine exhaust after treatment system includes generating a feedforward signal as a function of a desired output signal, the desired output signal corresponding to an output sought to be achieved through injection of the substance. Actual system output is measured and an actual output signal is generated corresponding to an output actually achieved through injection of the substance. The desired output signal and the actual output signal are compared and an error signal is generated corresponding to a difference between the desired output signal and the actual output signal. A control signal is generated as a function of the error signal and the feedforward signal for controlling an amount of the substance to inject, and the feedforward signal is adjusted by an adaptive factor, the adaptive factor being a function of the error signal. A diesel engine is also provided.

REFERENCES:
patent: 7111455 (2006-09-01), Okugawa et al.
patent: 2006/0042234 (2006-03-01), Song et al.
patent: 2006/0236686 (2006-10-01), Rellecati et al.
patent: 2006/0260299 (2006-11-01), Wang et al.
patent: 2007/0089403 (2007-04-01), Pfeifer et al.

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