An intelligent electronic device (IED) may monitor wet stack residue buildup of a diesel engine. Once the wet stack residue accumulates to a certain amount, the IED may perform a mitigation procedure. Additionally, tracking wet stack residue buildup may allow an IED to attempt to prevent or reduce accumulation of the wet stack residue. The IED may track an operating power level of the diesel engine to estimate the rate of residue buildup.

A work vehicle includes an exhaust gas treatment device including a DPF (diesel particulate filter); a DPF condition determiner configured to determine a DPF condition as a condition of the DPF based on a detection signal from a sensor; a monitor configured to display the DPF condition and having a DPF condition display area that includes a plurality of text segments to display respective predetermined text items different from each other; and a text display controller configured to light up two or more of the plurality of text segments in accordance with the DPF condition determined by the DPF condition determiner.

A hybrid vehicle controller includes processing circuitry configured to execute a particulate matter (PM) deposition amount estimation process that estimates a deposition amount of PM deposited in the filter. The processing circuitry is configured to switch between a first mode and a second mode as a control mode that defines control of the engine and the motor. A use of the engine is limited in the first mode as compared with the second mode. The processing circuitry is configured to execute a display process that notifies a user that the filter needs to be regenerated when the control mode is the second mode if the estimated deposition amount is greater than or equal to a predetermined amount, and not to execute the display process when the control mode is the first mode even if the deposition amount is greater than or equal to the predetermined amount.

A controller controls energization of a filter and a fuel addition valve in an exhaust purifying apparatus. The controller executes a filter regeneration process when an electrical resistance value between two electrodes fixed to an outer surface of the filter is less than a predetermined regeneration determination value. The controller executes a soot burning process when the electrical resistance value is greater than or equal to the regeneration determination value and less than a soot burning determination value, which is set in advance to be larger than the regeneration determination value.

A method is disclosed for controlling an engine assembly comprising an internal combustion engine and an exhaust gas treatment apparatus. The aftertreatment assembly may require cleaning from time to time, and where this involves active thermal management of the aftertreatment assembly, the method involves performing the following steps: (a) imposing a first limit on engine speed; (b) awaiting an engine safe state; and (c) implementing a cleaning process comprising: (i) injecting fuel into the engine such that the fuel passes through the engine without combusting for the fuel to combust in the diesel oxidation catalyst so as to target an increase in exhaust gas temperature in the diesel oxidation catalyst; and (ii) removing the first limit on engine speed and targeting an engine speed set point, wherein the engine speed set point is at a higher speed than the first limit on engine speed.

Various embodiments include a control system for the regeneration of a particle filter in an exhaust gas flow of an internal combustion engine of a hybrid vehicle including an electric machine comprising: a particle filter; a temperature sensor measuring an actual temperature of the filter; a first heat source upstream of the filter; and a controller. The controller is programmed to: determine a temperature difference between a setpoint temperature for regeneration of the particle filter and the actual temperature of the particle filter; calculate a power output difference to be applied based at least in part on the temperature difference; and control the first heat source using the power output difference.

An improved method for performing a conditioning process for a particulate filter, preferably adapted for an aftertreatment system arranged downstream of an internal combustion engine. The proposed method provides for conditioning of a filter under controlled conditions such that the filter may reach a desired operation state in a more efficient and faster manner. Further, the proposed method also advantageously provides for maintaining the desired operation state, in which the filtration capacity may be at a usable level.

The disclosure relates to a DPF regeneration trigger control method and terminal device, and a storage medium. The method includes: setting an active trigger differential pressure and an initial trigger differential pressure; and controlling, according to a relationship between a differential pressure of the DPF collected in real time during a vehicle travelling process and and the active trigger differential pressure and a relationship between the differential pressure of the DPF and the initial trigger differential pressure, the vehicle to actively start DPF regeneration, to trigger passive DPF regeneration, or not to start DPF regeneration; otherwise, controlling the vehicle to actively start DPF regeneration. According to the disclosure, by setting a flexible trigger interval, there is a tolerance interval of differential pressure, so that fuel consumption of the diesel engine can be reduced, and the economy is improved.

A work vehicle includes an exhaust gas treatment device including a DPF (diesel particulate filter); a DPF condition determiner configured to determine a DPF condition as a condition of the DPF based on a detection signal from a sensor; a monitor configured to display the DPF condition and having a DPF condition display area that includes a plurality of text segments to display respective predetermined text items different from each other; and a text display controller configured to light up two or more of the plurality of text segments in accordance with the DPF condition determined by the DPF condition determiner.

An exhaust purification system of an internal combustion engine comprises a filter trapping particulate matter in exhaust gas, a differential pressure sensor detecting a differential pressure before and after the filter or a differential pressure between a pressure in the exhaust passage and an atmospheric pressure, a temperature sensor detecting a temperature of exhaust gas, and a deposition calculating part configured to calculate an amount of particulate matter deposited at the filter. The deposition calculating part is configured to calculate a first estimated value of an amount of the particulate matter based on the differential pressure, calculate a second estimated value of an amount of the particulate matter based on an amount of increase of temperature of the exhaust gas, and calculate an amount of the particulate matter based on the first estimated value and the second estimated value.