APPARATUS, SYSTEM, AND METHOD FOR REDUCING NITROGEN OXIDE EMISSIONS IN A COMBUSTION ENGINE
First Claim
1. An apparatus for reducing nitrogen oxide emissions in a combustion engine, the:
- apparatus comprising;
a shift detection module configured to determine an out of gear (OOG) indicator;
an emissions module configured to set a minimum fuel target in response to the OOG indicator, the minimum fuel target further based on an exhaust gas recirculation (EGR) flow rate requirement and an EGR oxygen fraction requirement;
an engine speed module configured to determine an engine speed target based on an engine deceleration profile;
an engine acceleration module configured to determine a desired net torque based on the engine speed target;
a load determination module configured to determine an engine load target based on the desired net torque and a base fueling; and
an actuation module configured to generate an engine load signal to engage an engine load based on the engine load target.
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Accused Products
Abstract
An apparatus, system, and method are disclosed for reducing nitrogen oxide emissions in a combustion engine. The method includes a shift detection module determining an out of gear (OOG) indicator for a manual transmission. The method further includes an engine speed module determining an engine speed target based on at least one operating condition of the engine. The method continues with a load determination module determining an engine load target in response to the OOG indicator and an engine acceleration module determining a desired net torque based on the engine speed target and the engine load target. Finally, the method concludes with an emissions module determining a minimum fuel target based on the desired net torque and an actuation module generating a fueling signal to engage an engine fueling.
17 Citations
25 Claims
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1. An apparatus for reducing nitrogen oxide emissions in a combustion engine, the:
- apparatus comprising;
a shift detection module configured to determine an out of gear (OOG) indicator; an emissions module configured to set a minimum fuel target in response to the OOG indicator, the minimum fuel target further based on an exhaust gas recirculation (EGR) flow rate requirement and an EGR oxygen fraction requirement; an engine speed module configured to determine an engine speed target based on an engine deceleration profile; an engine acceleration module configured to determine a desired net torque based on the engine speed target; a load determination module configured to determine an engine load target based on the desired net torque and a base fueling; and an actuation module configured to generate an engine load signal to engage an engine load based on the engine load target. - View Dependent Claims (2, 3, 4, 5, 6)
- apparatus comprising;
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7. A system for reducing nitrogen oxide emissions in an internal combustion engine, the system comprising:
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an engine producing an exhaust flow, the engine mechanically coupled to a manual transmission; an exhaust gas recirculation (EGR) system returning a portion of the exhaust flow to an air intake of the engine; a controller for reducing nitrogen oxide emissions, the controller comprising; a shift detection module configured to determine an out of gear (OOG) indicator; an emissions module configured to set a minimum fuel target in response to the OOG indicator, the minimum fuel target further based on an exhaust gas recirculation (EGR) flow rate requirement and an EGR oxygen fraction requirement; an engine speed module configured to determine an engine speed target based on an engine deceleration profile; an engine acceleration module configured to determine a desired net torque based on the engine speed target; a load determination module configured to determine an engine load based on the desired net torque and a base fueling; and an actuation module configured to generate an engine load signal to engage an engine load based on the engine load target. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A method for reducing nitrogen oxide emissions in a combustion engine, the method comprising:
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determining an out of gear (OOG) indicator based on whether a rate of change in an apparent gear ratio exceeds a threshold; determining a minimum fuel target in response to the OOG indicator, the minimum fuel target based on an exhaust gas recirculation (EGR) flow rate requirement and an EGR oxygen fraction requirement; determining an engine speed target based on an engine deceleration profile; determining a desired net torque based on the engine speed target; determining an engine load target based on the desired net torque and a base fueling; generating an engine load signal based on the engine load target; and engaging a compression brake comprising the engine load. - View Dependent Claims (15, 16, 17)
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18. A method for reducing nitrogen oxide emissions in a combustion engine, the method comprising:
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determining an out of gear (OOG) indicator for a manual transmission; determining an engine speed target based on at least one operating condition; determining an engine load target in response to the OOG indicator; determining a desired net torque based on the engine speed target and the engine load target; determining a minimum fuel target based on the desired net torque; and generating a fueling signal to engage an engine fueling. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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Specification