System for controlling regeneration of lean NO x traps

Details System for controlling regeneration of lean NO x traps System for controlling regeneration of lean NO x traps

2007-12-11

2007-12-11

Solis, Erick (Department: 3747)

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

C123S681000, C701S104000

Reexamination Certificate

active

11656928

ABSTRACT:
A control system and method for controlling torque output of an engine include an air control module that receives an actual airflow and a desired airflow and outputs an adjusted actual airflow based on the actual airflow and the desired airflow. A fuel control module receives the adjusted actual airflow and controls fuel output based on the adjusted actual airflow, a ratio (λ) of an operating air-fuel mixture to an ideal air-fuel mixture, and an operating curve (λtraj).

REFERENCES:
patent: 6543219 (2003-04-01), Surnilla
patent: 6745747 (2004-06-01), Surnilla
patent: 7165399 (2007-01-01), Stewart

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