A method for regenerating an exhaust gas filter for a vehicle includes the steps of confirming and monitoring the current remaining amount of soot based on information on the initial amount of soot and information on the removal amount of soot during the execution of the service regeneration control mode, comparing the current remaining amount of soot with a predetermined target remaining amount in the condition in which the time accumulated and counted after the execution of the service regeneration control mode does not reach a predetermined first allowable time, and maintaining the execution of the service regeneration control mode until the remaining amount of soot reaches the target remaining amount in the condition that the accumulated and counted time does not reach the first allowable time when the current remaining amount of soot exceeds the target remaining amount.

An automotive vehicle includes an internal combustion engine that combusts an air/fuel mixture thereby generating exhaust gas containing particulate matter, and an exhaust after-treatment component that collects the particulate matter. A regeneration system burns off the collected particulate matter thereby regenerating the exhaust after-treatment component. A controller obtains a model of the combustion that is based on a kinetic controlled combustion phase and a mixing controlled combustion phase, and determines a point on the model with respect to current engine conditions that indicates an amount of the particulate matter in the exhaust gas.

An internal combustion engine provided with an engine body, a filter provided in an exhaust passage of the engine body and trapping PM in the exhaust, and an aggregating device charging PM in the exhaust flowing into the filter to make it aggregate. The control device for controlling the internal combustion engine is provided with a PM charging control part controlling the amount of charging of the PM in the exhaust flowing into the filter. The PM charging control part controls the aggregating device so that the amount of charging of the PM becomes smaller when the amount of PM buildup of the filter is large compared with when it is small.

Systems and methods for operating a spark ignition engine that includes a particulate filter in the engine's exhaust system are described. In one example, a threshold temperature at which the spark ignition engine may be automatically stopped is adjusted according to an amount of soot that is stored in the particulate filter.

An internal combustion engine is provided with an engine body, a housing provided in an exhaust passage of the engine body, a filter held inside the housing and trapping PM in the exhaust, and a microwave device for microwaving the inside of the housing. A control device for the internal combustion engine is configured to control the microwave device when microwaving the inside of the housing to heat the PM so that an amplitude of the microwaves becomes smaller when the amount of PM deposition at the filter is large compared to when it is small.

An exhaust gas control apparatus for an internal combustion engine includes an electromagnetic wave output unit, an acquisition unit that acquires collection amounts of PM and substances other than PM based on a rotational speed and a fuel injection amount of the internal combustion engine, and a control unit that controls an output intensity of the electromagnetic wave output unit. The control unit causes electromagnetic waves to be output with a first output intensity when the collection amount of the substances other than PM becomes equal to or smaller than a predetermined threshold, and causes electromagnetic waves to be output with a second output intensity that is lower than the first output intensity when the collection amount of the substances other than PM becomes larger than the predetermined threshold, when the collection amount of PM has exceeded a permissible value of the collection amount of PM in the filter.

A particulate filter for use in an exhaust aftertreatment system includes a ceramic substrate and an ash layer deposited atop the ceramic substrate. The ash layer has a uniform ash density of at least 0.4 g/L of the ceramic substrate. A method of depositing ash layers in a particulate filter of an exhaust aftertreatment system includes providing a ceramic substrate, preconditioning the ceramic substrate, depositing at least one ash layer atop the ceramic substrate during the preconditioning, monitoring uptake of soot into the particulate filter by measuring an increase in pressure drop across the particulate filter.

A fine particle detector includes: a casing part configured to accommodate an object to be heated; an electromagnetic wave generating part configured to generate electromagnetic waves of different frequencies; at least one power sensor configured to measure powers, from the casing part, of the electromagnetic waves that have entered into the casing part; and a fine particle detection controlling part configured to determine, based on the powers of the electromagnetic waves of the different frequencies measured by the at least one power sensor, whether an accumulated amount of fine particles accumulated in the object to be heated is greater than or equal to a predetermined accumulated amount.

A method and engine arrangement are provided for monitoring components in an exhaust aftertreatment system (EATS) including a diesel oxidation catalyst (DOC), a diesel particulate filter (DPF), and a selective catalytic reduction catalyst (SCR). A first O2 level is measured at a first location between the DOC and the DPF, a second O2 level is measured at a second location downstream of the SCR, a first NOx level is measured at, the first location, a second NOx level is measured at the second location, SCR efficiency is calculated based on the first and second NOx levels, and whether the DOC, the DPP. and the SCR are functioning property is determined based on whether the first O2 level is within a first O:2 target, whether the second O2 level is within a second O2 target, and whether SCR efficiency is within an SCR efficiency target.

An engine control device that can suppress thermal degradation of a particulate filter is provided. The device executes a fuel injection control module that restricts the supply of fuel by an injector if a fuel cutting condition is satisfied, an accumulation estimation module that estimates the accumulated amount of soot trapped in a GPF, and a regeneration control module that performs regeneration control for regenerating the GPF by burning soot if the accumulated soot amount exceeds a predetermined setting amount. A fuel cut prohibition line is set in advance and defines a prohibition temperature at which fuel cutting control is to be prohibited in accordance with the accumulated soot amount. The device further executes a prohibition control module that prohibits performance of fuel cutting control by the fuel injection control module if the temperature of the GPF is higher than the prohibition temperature.