Vehicle with gasoline particulate filter soot regeneration strategy with criteria emission reduction for low NOX emissions

An emission system of a vehicle, comprising:

• at least one exhaust tube extending from an engine of the vehicle and having a particulate filter fluidly coupled on the exhaust tube;
• at least one temperature sensor arranged to sense a temperature at the particulate filter;
• at least one injection pipe having an inlet facing forward on the vehicle and disposed to capture under hood airflow entering the vehicle while the vehicle is moving in a deceleration, wherein the air injection pipe comprises an outlet fluidly coupled to the exhaust tube between the particulate filter and the engine and a valve;
• and
• processor circuitry forming at least one processor communicatively coupled to the at least one temperature sensor and the valve and arranged to operate by opening and closing the air injection pipe depending on a sensed temperature of the particulate filter,
• wherein the at least one processor is arranged to operate by opening the air injection pipe when the vehicle is determined to be running a deceleration dynamic cylinder cut-off DCCO event, and wherein the air injection pipe may be opened for two seconds or more at a time.

A method, comprising:

• obtaining, by processor circuitry forming at least one processor, sensor data indicating a temperature of at least one particulate filter of an emission system of a vehicle, wherein the particulate filter is fluidly coupled to an exhaust tube extending from an engine of the vehicle;
• depending on a sensed temperature at the particulate filter, opening, by the at least one processor, an air injection pipe having an inlet facing forward on the vehicle and disposed to capture under hood airflow entering the vehicle while the vehicle is moving in a deceleration, wherein the air injection pipe comprises an outlet fluidly coupled to the exhaust tube between the particulate filter and the engine
• passively activating regeneration of the particulate filter by permitting air flow through the injection pipe when the vehicle is decelerating sufficiently to lower exhaust pressure below air pressure at the inlet;
• and
• reducing the total hydrocarbons (THC) and CO emissions during a tip-in after deceleration by releasing oxygen stored in the catalytic converters during a deceleration dynamic cylinder cut-off (DCCO) event.