Injector tip cleaning systems and methods
AssigneeGM Global Technology Operations LLC
InventorsPaul Jasinkiewicz, James M. Perrin
Life of this patent
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Abstract
A treatment control system comprises a monitoring module and an injection control module. The monitoring module monitors an exhaust temperature and an exhaust flow rate in an exhaust system of a vehicle. The injection control module controls injection of a dosing agent into the exhaust system for first and second regeneration events of a diesel particulate filter (DPF) and selectively injects a predetermined amount of the dosing agent into the exhaust system between the first and second regeneration events when the exhaust temperature is greater than a predetermined temperature and the exhaust flow rate is greater than a predetermined flow rate.
Claims22
A treatment control system comprising:
- a monitoring module that monitors an exhaust temperature and an exhaust flow rate in an exhaust system of a vehicle;
- and
- an injection control module that controls injection of a dosing agent into said exhaust system for first and second regeneration events of a diesel particulate filter (DPF) and that selectively injects a predetermined amount of said dosing agent into said exhaust system between said first and second regeneration events when said exhaust temperature is greater than a predetermined temperature and said exhaust flow rate is greater than a predetermined flow rate.
A treatment control system comprising:
- a monitoring module that monitors an exhaust temperature and an exhaust flow rate in an exhaust system of a vehicle;
- and
- an injection control module that controls injection of a fluid into said exhaust system at first and second times when first and second predetermined exhaust system conditions occur, respectively, and that selectively injects a predetermined amount of said fluid into said exhaust system between said first and second times when said exhaust temperature is greater than a predetermined temperature and said exhaust flow rate is greater than a predetermined flow rate.
A treatment control method comprising:
- monitoring an exhaust temperature and an exhaust flow rate in an exhaust system of a vehicle;
- controlling injection of a dosing agent into said exhaust system for first and second regeneration events of a diesel particulate filter (DPF);
- and
- selectively injecting a predetermined amount of said dosing agent into said exhaust system between said first and second regeneration events when said exhaust temperature is greater than a predetermined temperature and said exhaust flow rate is greater than a predetermined flow rate.
A treatment control method comprising:
- monitoring an exhaust temperature and an exhaust flow rate in an exhaust system of a vehicle;
- controlling injection of a fluid into said exhaust system at first and second times when first and second predetermined exhaust system conditions occur, respectively;
- and
- selectively injecting a predetermined amount of said fluid into said exhaust system between said first and second times when said exhaust temperature is greater than a predetermined temperature and said exhaust flow rate is greater than a predetermined flow rate.
Dependencies are inferred from the claim text.