A particulate matter sensor includes a shield through which exhaust gases flow in a direction of flow from upstream to downstream. A sensing element with a positive electrode and a negative electrode separated from the positive electrode by an electrode gap is located within the shield. The positive electrode includes a plurality of positive electrode branches each having positive electrode extensions extending downstream and separated from each other by positive electrode slots. A positive electrode extension tip for each has a positive electrode extension tip width. The negative electrode includes negative electrode branches each having negative electrode extensions extending upstream which are each flanked on each side thereof by a plurality of negative electrode slots. A negative electrode extension tip for each has a negative electrode extension tip width. A sum of the positive electrode extension tip widths is greater than a sum of the negative electrode extension tip widths.

A welding component is provided for welding to a component via at least one welding region. The welding component includes: at least one welding indicator arrangement provided on the welding component; and, the at least one welding indicator arrangement includes a welding region minimum indicator to be covered by the at least one welding region and a welding region maximum indicator not to be covered by the at least one welding region.

A system of controlling the capture of emissions from an exhaust emitter includes a housing including an inlet, a first outlet, and a second outlet; an adapter configured to attach to the exhaust emitter and the inlet of the housing; an attachment assembly coupled to the exhaust emitter, the attachment assembly including at least one leg pivotably coupled to the adapter; at least one valve coupled to the housing; and a control unit capable of communicating with the at least one valve to control the emission of exhaust through the device.

The invention relates to a method for automatically detecting clogging of a sensor pipe extending between a pressure sensor and an exhaust manifold of an internal combustion engine, wherein the pressure sensor enables to record a signal representative of the relative pressure over time. The method includes at least one of the following steps: a) determining, while the engine runs in a steady operation state, an average amplitude of oscillations of the signal over a first period of time, the sensor pipe being considered clogged when said average amplitude is lower than a first threshold; b) monitoring, from the time the engine has been turned off, the signal over a second period of time, the sensor pipe being considered clogged when the integral of the signal is greater than a second threshold.

A lean-burn internal combustion engine and an exhaust aftertreatment system having an oxidation catalyst are described. A controller determines a fueling rate and a mass flowrate of the exhaust gas feedstream. An inlet temperature of the exhaust gas feedstream upstream of the oxidation catalyst is determined via the first temperature sensor, and an in-use outlet temperature of the exhaust gas feedstream is determined downstream of the oxidation catalyst via the second temperature sensor. An expected outlet temperature from the oxidation catalyst is determined based upon the inlet temperature, the fueling rate, and the mass flowrate of the exhaust gas feedstream. The oxidation catalyst is evaluated based upon the expected outlet temperature and the in-use outlet temperature.

An exhaust treatment system for a work vehicle includes a selective catalytic reduction (SCR) system having an SCR outlet for expelling treated exhaust flow therefrom, a flow conduit in fluid communication with the outlet, an exhaust sensor positioned within the flow conduit downstream of the outlet, and a flow mixer positioned upstream of the exhaust sensor. The flow mixer has an end wall defining sector openings circumferentially extending between first and second sector sides and radially between radially inner and outer sector ends. Moreover, the flow mixer has swirler vanes, where each of the swirler vanes extends circumferentially from the first sector side of a respective one of the sector openings and radially between radially inner and outer vane ends. Particularly, the radially outer vane end of each of the swirler vanes is spaced apart from the radially outer sector end of the respective one of the sector openings.

An exhaust system includes an exhaust gas-carrying pipe and a bypass to the exhaust gas-carrying pipe. The bypass has at least one inlet pipe and at least one outlet pipe. An exhaust gas sensor is arranged in the bypass between the inlet pipe and the outlet pipe in such a way that exhaust gas flowing through the bypass flows through the exhaust gas sensor. An accelerator accelerates the gas flow downstream of the exhaust gas sensor and is coupled to the outlet pipe. At least one inlet portion extends from the inlet pipe to the exhaust gas sensor, the flow cross-section of which is smaller than the flow cross-section of the inlet pipe and opens into an inlet of the exhaust gas sensor.

The invention presented is a crossover section for a vehicle exhaust system that includes a middle pipe and two outer pipes, each outer pipe in contact with and attached to the middle pipe. Diversion gates extend from the middle pipe into each of the outer pipes to divert a sample of exhaust gas into the middle pipe. A sensor, such as an oxygen sensor, is provided to measure one or more components of the combined exhaust. Also provided is an exhaust system that includes the inventive crossover section and a vehicle that includes one or more of the inventive exhaust systems.

Methods, systems, and vehicles that control the temperature of a device included in the vehicle are presented herein. The temperature of the device is controlled by ventilating the device with drivetrain air, such as transmission cooling air. In some embodiments, the device is at a greater temperature than the drivetrain air, which cools the device. In other embodiments, the device is at a lesser temperature than the drivetrain air, which heats the device. The drivetrain air is provided to the device through an exhaust duct coupled to the vehicle's transmission. The drivetrain exhaust air is preferably circulated by the transmission. The transmission may be a continuously variable transmission. The device may be an oxygen sensor that is coupled to an engine exhaust pipe. The oxygen sensor is thermally coupled to the engine exhaust and the engine exhaust pipe, which are at greater temperatures than the transmission exhaust air.

A probe carrier arrangement, especially for an exhaust system of an internal combustion engine, includes a probe socket (14) provided at a probe carrier body (12). The probe socket (14) has at least one insert-receiving opening (24) extending in a direction of an insert-receiving opening longitudinal axis (E). A probe carrier insert (28) is arranged in the insert-receiving opening (24). The probe carrier insert (28) has at least one probe-receiving opening (36) extending in a direction of a probe-receiving opening longitudinal axis (S).