公开(公告)号：US09765666B2

公开(公告)日：2017-09-19

申请号：US15018993

申请日：2016-02-09

申请人： Michael A Smith ,  Craig L Dimaggio ,  Jeffrey P Wuttke ,  Andrew Brocker ,  Travis T Hamilton ,  Ken Hardman ,  Cody Baldwin-Squib

发明人： Michael A Smith ,  Craig L Dimaggio ,  Jeffrey P Wuttke ,  Andrew Brocker ,  Travis T Hamilton ,  Ken Hardman ,  Cody Baldwin-Squib

IPC分类号： F01N3/00 ,  F01N3/10 ,  F01N3/20 ,  F01N13/00 ,  F01N13/10 ,  F01N3/08 ,  F01N13/04

CPC分类号： F01N3/2073 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/106 ,  F01N3/208 ,  F01N13/008 ,  F01N13/011 ,  F01N13/04 ,  F01N13/107 ,  F01N2240/25 ,  F01N2430/02 ,  F01N2430/06 ,  F01N2610/02 ,  F01N2900/1616 ,  F01N2900/1814 ,  Y02T10/22 ,  Y02T10/24

摘要： A system and method for utilizing fuel as an on-board reductant for selective catalytic reduction of NOx is provided and includes a controller for controlling an engine to produce a lean first exhaust stream and a rich second exhaust stream that are received in respective first and second passageways of a dual path aftertreatment system. The rich second exhaust stream reacts with NOx stored in a NOx storage and reduction catalyst of the second passageway to regenerate this catalyst and generate ammonia. The first exhaust stream and the second exhaust stream having the generated ammonia are combined in a downstream common passageway to form a combined lean exhaust gas stream where the ammonia carried therein is stored or used by an SCR catalyst of the common passageway for NOx reduction. The engine is subsequently controlled to produce a rich first exhaust stream and a lean second exhaust stream.

公开(公告)号：US11329498B2

公开(公告)日：2022-05-10

申请号：US16989026

申请日：2020-08-10

申请人： David R Pedro ,  Arab Alsharif ,  Joydip Saha ,  Travis T Hamilton ,  Nikhil Patil ,  Geoffrey Giese ,  Basil M Khaja ,  Ganapathy Machamada Somaiah ,  Joseph B Adams ,  Paul Milligan

发明人： David R Pedro ,  Arab Alsharif ,  Joydip Saha ,  Travis T Hamilton ,  Nikhil Patil ,  Geoffrey Giese ,  Basil M Khaja ,  Ganapathy Machamada Somaiah ,  Joseph B Adams ,  Paul Milligan

IPC分类号： H02P7/14 ,  H02J7/14 ,  B60R16/033 ,  H02P9/48

摘要： Charging control techniques for a vehicle including an engine that drives an alternator configured to charge a battery of the vehicle comprise modeling a fuel consumption of the alternator for each load level across a range of alternator loads using an engine torque model and a set of operating parameters of the engine, determining an energy output from the alternator for each load level across the range of alternator loads, calculating a cost-to-charge metric based on the modeled alternator fuel consumption and the determined alternator energy output for each duty cycle across a range of duty cycles of the alternator, determining an optimal cost-to-charge from the calculated cost-to-charge metrics, determining a target cost-to-charge metric based on a state of charge of the battery, and operating the alternator accordingly at an optimal duty cycle based on the metrics and current engine operating conditions.