Methods and systems are provided for a soot sensor. In one example, a method diverting exhaust gas from a main exhaust passage to a second exhaust passage comprising a soot sensor with a rotatable component configurable to capture soot.

A heating system includes at least one electric heater disposed within the fluid flow system. A control device includes a microprocessor and is configured to determine a temperature of the at least one electric heater based on a model and at least one input from the fluid flow system. The control device is configured to provide power to the at least one electric heater based on the temperature of the at least one electric heater.

A heat exchanger for an internal combustion engine includes a first flow channel; a second flow channel arranged adjacent to the first flow channel; a line separate from the second flow channel; and a valve channel in which an adjustable valve element is disposed. The valve channel is arranged upstream of the first and second flow channels and an inlet channel is arranged upstream of the valve channel in a flow direction of exhaust gas. The valve element includes a baffle plate, the baffle plate having an end portion that extends diagonally in the valve channel with respect to the flow axis of the first flow channel. The valve element includes a flap that is pivotably mounted at the end portion of the baffle plate such that the flap is pivotable about an axis that extends in a direction of a width of a common housing.

Provided is a heat exchange device 1 in which: a heat exchange path composed of a plurality of heat exchange branch paths ER1 and ER2 and a detour path DR are provided inside a base structure 2 having a fluid introducing portion 21 and a fluid discharging portion 22; a heat exchange portion 4 through which a heating target fluid is arranged in each of the heat exchange branch paths ER1 and ER2; and a switching portion is provided that can switch a flow of heated fluid circulating through the base structure 2 so as to be regulated to either the heat exchange path or the detour path DR. A heat exchange device having excellent heat exchange performance and capable of shortening the length and reducing the size is provided.

An exhaust-gas aftertreatment device for an internal combustion engine, for use in a motor vehicle, includes an exhaust tract with at least one exhaust pipe and at least one exhaust-gas aftertreatment element. The exhaust-pipe internal wall and/or the at least one exhaust-gas aftertreatment element have/has a vapor-sorbing material forming at least one exhaust-tract-side sorption element.

A condensed water treatment device for an internal combustion engine is provided. The condensed water treatment device may include a condensed water tank, a condensed water supply device, and a condensed-water generation quantity controlling device. The condensed water treatment device may further include a computer. The computer by executing a computer program may function as a storage-water-quantity decrease controlling device and a storage-water-quantity increase controlling device.

An exhaust heat recovery device includes: a first pipe through which exhaust gas from an engine flows; a second pipe that communicates with the first pipe and bypasses the first pipe; a heat recovery unit that is disposed at an interior of the second pipe, and that exchanges heat between the exhaust gas and cooling water that circulates at an interior of the heat recovery unit, and that recovers heat of the exhaust gas; and a heat transfer suppressing mechanism that is provided at a portion connecting the first pipe with the second pipe, and that suppresses transfer of heat from the first pipe to the second pipe.

An exhaust purification system includes: a diesel oxidation catalyst (DOC) provided on an exhaust passage of an engine; a diesel particulate filter (DPF) provided on the exhaust passage at a position downstream of the DOC to collect particulate matter contained in exhaust gas; electrodes that detect a capacitance of the DOC; a particulate matter accumulation estimating unit that estimates an amount of particulate matter accumulated in the DPF on the basis of the detected capacitance; and a forced regeneration control unit that injects fuel into the DOC and performs forced regeneration that burns and removes at least the particulate matter accumulated in the DPF when the estimated accumulated particulate matter amount surpasses a predetermined amount.

A gaseous fuel engine system includes an exhaust controller coupled with a temperature sensor and a NOx sensor, and structured to actuate open an electrically actuated bypass valve to bypass an oxidation catalyst with exhaust, based on an exhaust temperature and an exhaust NOx amount to mitigate production of yellow smoke. Yellow smoke mitigation logic may run during startup and when the gaseous fuel engine is in a lower part of an engine load range. The yellow smoke mitigation logic can be selectively triggered in response to transient engine load increases when the gaseous fuel engine is operating in an upper part of an engine load range.

A plasma selective catalytic reduction (SCR) system according to an exemplary embodiment of the present invention includes: an exhaust pipe connected to an engine to communicate exhaust gas; a plasma burner installed in a first bypass line connected to the exhaust pipe, and configured to supply fuel to discharged plasma and form flame; a urea solution injector installed in the first bypass line at a rear side of the plasma burner, and configured to inject a urea solution to exhaust gas heated by the flame and generate ammonia; and an SCR catalyst installed in the exhaust pipe at a rear side of the urea solution injector, and configured to reduce a nitrogen oxide included in the exhaust gas with the ammonia.