公开(公告)号：US20240200481A1

公开(公告)日：2024-06-20

申请号：US18395125

申请日：2023-12-22

申请人： PACCAR Inc

发明人： Cynthia Chaffin Webb ,  John Lyle Lahti ,  Charles Wayne Reinhardt Swart

IPC分类号： F01N3/20 ,  F01N3/08

CPC分类号： F01N3/208 ,  F01N3/0807 ,  F01N3/0814 ,  F01N3/0871 ,  F01N3/0885 ,  F01N3/2006 ,  F01N3/206 ,  F01N3/2066 ,  F01N2250/12 ,  F01N2550/03 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2610/146 ,  F01N2900/04 ,  F01N2900/0412 ,  F01N2900/1402 ,  F01N2900/1614 ,  F01N2900/1616 ,  F01N2900/1621 ,  F01N2900/1622

摘要： Controlling exhaust after-treatment in a heavy-duty motor vehicle includes operating a diesel engine of a heavy-duty truck such that the diesel engine generates an exhaust gas flow that enters an exhaust after-treatment system of the heavy-duty truck, the exhaust after-treatment system including a selective catalytic reduction system, measuring a level of NOx gases in the exhaust gas flow downstream of the selective catalytic reduction system, and controlling a diesel exhaust fluid injector upstream of the selective catalytic reduction system to inject diesel exhaust fluid into the exhaust gas flow upstream of the selective catalytic reduction system at an injection rate that is based on the measured level of NOx gases.

公开(公告)号：US11879375B2

公开(公告)日：2024-01-23

申请号：US17830123

申请日：2022-06-01

申请人： PACCAR Inc

发明人： Cynthia Chaffin Webb ,  John Lyle Lahti ,  Charles Wayne Reinhardt Swart

IPC分类号： F01N3/20 ,  F01N3/08

CPC分类号： F01N3/208 ,  F01N3/0807 ,  F01N3/0814 ,  F01N3/0871 ,  F01N3/0885 ,  F01N3/206 ,  F01N3/2006 ,  F01N3/2066 ,  F01N2250/12 ,  F01N2550/03 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2610/146 ,  F01N2900/04 ,  F01N2900/0412 ,  F01N2900/1402 ,  F01N2900/1614 ,  F01N2900/1616 ,  F01N2900/1621 ,  F01N2900/1622

摘要： Controlling exhaust after-treatment in a heavy-duty motor vehicle includes operating a diesel engine of a heavy-duty truck such that the diesel engine generates an exhaust gas flow that enters an exhaust after-treatment system of the heavy-duty truck, the exhaust after-treatment system including a selective catalytic reduction system, measuring a level of NOx gases in the exhaust gas flow downstream of the selective catalytic reduction system, and controlling a diesel exhaust fluid injector upstream of the selective catalytic reduction system to inject diesel exhaust fluid into the exhaust gas flow upstream of the selective catalytic reduction system at an injection rate that is based on the measured level of NOx gases.

公开(公告)号：US20230392532A1

公开(公告)日：2023-12-07

申请号：US17830123

申请日：2022-06-01

申请人： PACCAR Inc

发明人： Cynthia Chaffin Webb ,  John Lyle Lahti ,  Charles Wayne Reinhardt Swart

IPC分类号： F01N3/20

CPC分类号： F01N3/208 ,  F01N2900/1402 ,  F01N2610/146

摘要： Controlling exhaust after-treatment in a heavy-duty motor vehicle includes operating a diesel engine of a heavy-duty truck such that the diesel engine generates an exhaust gas flow that enters an exhaust after-treatment system of the heavy-duty truck, the exhaust after-treatment system including a selective catalytic reduction system, measuring a level of NOx gases in the exhaust gas flow downstream of the selective catalytic reduction system, and controlling a diesel exhaust fluid injector upstream of the selective catalytic reduction system to inject diesel exhaust fluid into the exhaust gas flow upstream of the selective catalytic reduction system at an injection rate that is based on the measured level of NOx gases.