An exhaust gas recirculation system for an engine includes a conduit, and a mixer. The conduit is configured to direct to direct exhaust gas away from an exhaust manifold. The mixer is configured to direct exhaust gas from the conduit, into an engine air intake system. The mixer is arranged with an exhaust gas mixing volute chamber having a plurality of mixing vanes configured to direct the exhaust gas into a central intake airflow upstream of an intake manifold.

A premixing apparatus has a butterfly valve provided in an air supply passage, a zero governor and a variable throttle valve interposed in a gas supply passage. A control is performed to switch a combustion capacity between at least two stages of a large-capacity stage and a small-capacity stage through change in opening degrees of the butterfly valve and the variable throttle valve. At the small-capacity time, in case the opening degree of the variable throttle valve, when regulated so that the λ becomes a predetermined value, has been changed more to the small-opening-degree side than the predetermined small-capacity opening degree, in a state in which the opening degree of the variable throttle valve has been returned to the predetermined small-capacity opening degree, the opening degree of the butterfly valve is regulated such that the λ becomes the predetermined value, and the small-capacity opening degree of the butterfly valve is renewed to the predetermined value when the λ becomes the predetermined value.

A gaseous fuel mixer assembly for an engine includes a mixer housing forming gas delivery openings, and positioned to extend across a flow path formed by an intake conduit for the engine. A spool valve is within a central bore in the mixer housing and includes gas distribution openings selectively connectable to the gas delivery openings by moving the spool valve within the mixer housing using a piezoelectric actuator coupled with the spool valve by way of a pivot arm. Sealing lands of the spool valve are in an alternating arrangement with the gas distribution openings, such that at the closed position the sealing lands block the gas distribution openings from the gas delivery openings, and at the open position the respective openings are fluidly connected.

The present disclosure relates to a blender having blades whose orientation angle is changeable, even while the blender is in operation. The blender 100 includes a housing 110 with inlets (140a, 140b) to allow inflow of ingredients and an outlet (140c) to allow outflow of blended ingredients. The blender 100 incorporates an external shaft 122 with the blades 123 rotatably coupled to it, and an internal shaft 121 inside the external shaft 122. The blender 100 incorporates a first driving unit 130 to rotate the external shaft 122 and blades 123 about a direction along a length of the housing 110 to allow blending of the ingredients. The internal shaft 121 having engaging means coupled to back of the blades 123 such that a linear displacement of the internal shaft 121 using a second driving unit 121, enables change in orientation of the blades 123.

A dilution device may include a first component and a second component. The first component may define a groove including an inlet portion and an outlet portion. The second component may define an inlet in fluid communication with the inlet portion of the first component and an outlet in fluid communication with the outlet portion of the first component. Relative rotation between the first component and the second component may cause relative movement between the outlet and the outlet portion that changes the effective length of the groove fluidly coupling the inlet and the outlet of the second component. The cross-sectional area of the groove may vary along a length of the groove to provide different flow characteristics depending on the effective length of the groove.

An apparatus for generating a powerful oxidative hydrogen peroxide foam and chemically stable application process comprises separate supply lines for respectively conveying liquid hydrogen peroxide and liquid foaming agent from separate storage receptacles, a mixer for mixing the liquid hydrogen peroxide and foaming agent once combined together, an air supply line for aerating the foamable liquid hydrogen peroxide mixture, and a foam generating device for mechanically agitating the aerated foamable liquid hydrogen peroxide mixture to form the hydrogen peroxide foam for subsequent discharge to a substrate. There is also disclosed a related method for generating the hydrogen peroxide foam.

Apparatus and methods for variable-control fragrance dispensing. The disclosed device brings customization to the fragrance industry. Interchanging sub-containers and selecting the amounts of each sub-container allows a user to customize their scents. A mixing chamber contained to receive and mix a variable amount of each liquid from a plurality of sub-containers is described. The mixed liquid is sprayable out a spray head of the device. Selector knobs may be used to control valves which control the variable amount of each liquid dispensed.

A dilution device may include a first component and a second component. The first component may define a groove including an inlet portion and an outlet portion. The second component may define an inlet in fluid communication with the inlet portion of the first component and an outlet in fluid communication with the outlet portion of the first component. Relative rotation between the first component and the second component may cause relative movement between the outlet and the outlet portion that changes the effective length of the groove fluidly coupling the inlet and the outlet of the second component. The cross-sectional area of the groove may vary along a length of the groove to provide different flow characteristics depending on the effective length of the groove.

A method for dosing an injection product into a base product, in particular, for the production of a finishing and/or protective paint product, including the following steps: (a) supply of a mixing device, (b) establishment of a continuous flow of base product, (c) injection of the injection product into the continuous flow for a given time, (d) measurement of the amount of injection product injected, (e) calculation of a desired amount of base product based on the amount of injection product injected, steps (c), (d) and (e) being repeated when the amount of base product having passed since the start of step (c) is equal to the amount of base product desired, the injection product being injected into the base product only during step (c).

The steps of providing a cleaning device, a liquid proportioning device and a series of tanks filled with liquids. The cleaning device has a nozzle, a series of hoses and a pump. The liquid proportioning device includes a series of passageways, having three chambers and two valves, and a manifold for mixing the liquids to form a cleaning solution. The passageways include knobs to set the ratio of each liquid that the user desires to mix into a cleaning solution. Once the cleaning solution is mixed, it is fed through a pump to cleaning device for use. The proportioning device allows a user to easily, quickly and accurately mix liquids to form a cleaning solution.