System for controlling exhaust emissions produced by an internal combustion engine

A method of controlling exhaust emissions produced by an internal combustion engine, the method comprising:

• determining a rotational speed of an internal combustion engine;
• determining an altitude of said engine;
• determining an ambient temperature external to said engine;
• determining an output torque produced by said engine;
• determining a maximum allowable emission level as a function of said rotational speed, said altitude, said ambient temperature and said output torque;
• and
• controlling an air handling system of said engine as a function of said maximum allowable emission level such that exhaust emissions produced by said engine are limited to said maximum allowable emission level.

System for controlling exhaust emissions produced by an internal combustion engine, the system comprising:

• means for determining a first operating parameter of an internal combustion engine and producing a first operating parameter value corresponding thereto;
• a first auxiliary emission control device (AECD) producing a first emission level as a function of at least said first operating parameter value;
• and
• a control computer determining a maximum allowable emission level as a function of said first emission level and a reference emission level, said computer controlling an air handling system of said engine as a function of said maximum allowable emission level such that exhaust emissions produced by said engine are limited to said maximum allowable emission level.

System for controlling exhaust emissions produced by an internal combustion engine, the system comprising:

• a plurality of means for determining a corresponding plurality of different operating parameters of an internal combustion engine and producing a corresponding plurality of operating parameter values corresponding thereto;
• a number of auxiliary emission control devices (AECDs) each producing an independent emission level as a function of at least one of any of said plurality of operating parameter values;
• and
• a control computer determining a maximum allowable emission level as a maximum one of a reference emission level and each of said emission levels produced by said number of AECDs, said computer controlling an air handling system of said engine as a function of said maximum allowable emission level such that exhaust emissions produced by said engine are limited to said maximum allowable emission level.

A method of controlling exhaust emissions produced by an internal combustion engine, the method comprising:

• determining a plurality of operating parameters each corresponding to a different operating condition of an internal combustion engine;
• determining a number of emission levels each corresponding to a different auxiliary emission control device (AECD) and each as a function of at least one of any of said plurality of operating parameters;
• determining a maximum allowable emission level as a maximum one of a reference emission level and said number of emission levels;
• and
• controlling an air handling system of said engine as a function of said maximum allowable emission level such that exhaust emissions produced by said engine are limited to said maximum allowable emission level.

System for controlling exhaust emissions produced by an internal combustion engine, the system comprising:

• means for determining a first operating parameter of an internal combustion engine and producing a first operating parameter value corresponding thereto;
• a first auxiliary emission control device (AECD) producing a first state value indicative of a first operating condition of said engine as a function of at least said first operating parameter value;
• and
• a control computer controlling exhaust emissions produced by said engine by controlling an air handling system of said engine as a function of said first state value.

System for controlling exhaust emissions produced by an internal combustion engine, the system comprising:

• a plurality of means for determining a corresponding plurality of different operating parameters of an internal combustion engine and producing a corresponding plurality of operating parameter values corresponding thereto;
• a number of auxiliary emission control devices (AECDs) producing a corresponding number of independent state values each as a function of at least one of any of said plurality of operating parameter values;
• and
• a control computer controlling exhaust emissions produced by said engine by controlling an air handling system of said engine as a function of said number of state values.

A method of controlling exhaust emissions produced by an internal combustion engine, the method comprising:

• determining a plurality of operating parameters each corresponding to a different operating condition of an internal combustion engine;
• determining a number of state values each corresponding to a different auxiliary emission control device (AECD) and each as a function of at least one of any of said plurality of operating parameters;
• and
• controlling exhaust emissions produced by said engine by controlling an air handling system of said engine as a function of said first state value.