Devices, systems and methods for mixing and/or introducing agrochemicals, comprising a mixer including a mixing chamber in which a liquid is able to flow, and a delivery point located on the mixing chamber for delivering an agrochemical into the mixing chamber, wherein the mixer includes means for generating backpressure in the liquid and the agrochemical in the mixing chamber, and a mixer system including a mixer, an injector, and an agrochemical source, wherein the injector is adapted to receive an agrochemical from the agrochemical source, and a method including the steps of supplying a liquid into a mixing chamber of a mixer or mixer system, delivering an agrochemical into the mixing chamber, and generating backpressure to the liquid flowing through the mixing chamber to effect mixing of the liquid and the delivered agrochemical.

An exhaust gas aftertreatment system includes a decomposition reactor, an injector, and a processor. The decomposition reactor includes a body, an impingement structure, and a heater. Exhaust gas is flowable through the body. The body includes an inlet and an outlet. The inlet is configured to receive the exhaust gas at a first temperature. The outlet is configured to selectively expel the exhaust gas at a second temperature greater than the first temperature. The impingement structure is disposed within the body between the inlet and the outlet. The impingement structure extends into the body and is located such that the exhaust gas flowing through the body impinges on the impingement structure. The heater is coupled to the impingement structure and configured to selectively heat the impingement structure. The injector is configured to inject reductant into the body. The processor is programmed to control the heater.

A selective catalytic reduction (SCR) system includes a SCR canister including a SCR inlet configured for receiving engine exhaust from a work vehicle and a SCR outlet configured for expelling a treated exhaust flow. The system includes first and second SCR chambers housed within the SCR canister and configured to react mixtures of exhaust reductant and associated first and second portions of the engine exhaust with a catalyst to generate first and second treated exhaust flow portions, respectively. The system includes an outlet chamber positioned between the SCR outlet and the first and second SCR chambers. Moreover, the outlet chamber is configured to combine the first and second treated exhaust flow portions to form the treated exhaust flow. Further, the system includes a chamber mixer positioned upstream of the SCR outlet and configured to promote mixing of the first and second treated exhaust flow portions within the outlet chamber.

A mixer for a vehicle exhaust system, according to an exemplary aspect of the present disclosure includes, among other things, a mixer outer shell defining an internal cavity configured to receive engine exhaust gases, the mixer outer shell having a first end and a second end opposite the first end. A baffle is associated with one of the first and second ends. The baffle comprises a body that includes at least one sensor area formed within the body.

A method as well as a liquid mixing system for providing a liquid mixture of water with at least one additive. The liquid mixing system comprises a first water reservoir, a first additive reservoir, a mixing unit, a conveying device and a line network. At least one first measurement value of the flow of the first additive conveyed to a mixing device is determined by an additive flowmeter. The total stream of the liquid mixture conveyed by the conveying device is measured by a liquid mixture flowmeter. The determined measurement values are transmitted to a control device, and from there passed on to a data storage device where they are stored.

An exhaust gas purification device includes a selective catalytic reduction (SCR) device arranged in a downstream exhaust flow path, and a mixer arranged upstream of the selective catalytic reduction device and including a helical flow path that helically guides the flow of exhaust gas from an internal combustion engine. In the exhaust gas purification device, the mixer includes a casing, an injector, and a partition plate. The casing has an upstream opening and a downstream opening and is provided with the helical flow path therein. The injector is arranged in the helical flow path to add a reducing agent to the helical flow path. The partition plate is continuous from the upstream opening to the downstream opening. The partition plate is arranged to divide the inner space of the casing into an upstream side and a downstream side, and defines the helical flow path.

A two-stage mixer may include a guiding element and a mixing element. The guiding element may be configured to be fixedly mounted to an interior of an exhaust conduit. The mixing element may be configured to be fixedly mounted to the interior of the exhaust conduit in a position downstream from the guiding element. The mixing element may include a central disk, a plurality of mounting arms extending radially from the central disk, and a plurality of blades extending radially from the central disk. At least one mounting arm of the plurality of mounting arms may include a fin extending therefrom, and at least one blade of the plurality of blades may include a fin extending therefrom.

An exhaust system for an internal combustion engine includes an oxidation catalytic converter unit (12) with a first catalytic converter housing with a first housing axis (A.sub.1). An SCR catalytic converter unit (18) has a second catalytic converter housing (20), with a second housing axis (A.sub.2). A mixer housing (16) has an upstream connection area (24) adjoining a downstream end (26) of the first catalytic converter housing (14) and has a downstream connection area (28) adjoining an upstream end (30) of the second catalytic converter housing. A mixer (48) is carried in the mixer housing. A reactant release device (56) at the mixer housing releases reactant into a reactant-receiving duct (72) of the mixer. The mixer housing includes a first housing part (36) forming the upstream connection area (24) and a second housing part (38) forming the downstream connection area together with the first housing part.

A microbubble generation device comprises a liquid inlet (101), a gas inlet (104), a bubble flow outlet (103), and a gas-liquid mixing chamber (102). An air-permeable hole having an angle structure is provided at a gas-liquid interface of the gas-liquid mixing chamber (102), and a pointed end of the angle structure of the air-permeable hole points to a liquid flow direction. The bubbles generated by the device are extremely small in diameter, prolonging a duration the bubbles stay in the liquid phase, and enhancing gas-liquid mass transfer efficiency.

An exhaust gas aftertreatment system includes a decomposition reactor, an injector, and a processor. The decomposition reactor includes a body, an impingement structure, and a heater. Exhaust gas is flowable through the body. The body includes an inlet and an outlet. The inlet is configured to receive the exhaust gas at a first temperature. The outlet is configured to selectively expel the exhaust gas at a second temperature greater than the first temperature. The impingement structure is disposed within the body between the inlet and the outlet. The impingement structure extends into the body and is located such that the exhaust gas flowing through the body impinges on the impingement structure. The heater is coupled to the impingement structure and configured to selectively heat the impingement structure. The injector is configured to inject reductant into the body. The processor is programmed to control the heater.