An axial extension part is proposed which makes it possible to use a filter cartridge (25) of larger axial dimensions than a standard filter cartridge for which the axial depth of a hollow housing (11) of a casing (10) of a selective catalytic reduction (SCR) device has been provided. This makes it possible to have different filtration characteristics without having to modify the casing. The larger filter cartridge (25) can be inserted into the extension part when this part is mounted in the housing (11) of the casing (10). The cartridge is sealed therein when the sealing cap (21) is put in place to close the opening at the rear end of the part.

An axial extension part is proposed which makes it possible to use a filter cartridge (25) of larger axial dimensions than a standard filter cartridge for which the axial depth of a hollow housing (11) of a casing (10) of a selective catalytic reduction (SCR) device has been provided. This makes it possible to have different filtration characteristics without having to modify the casing. The larger filter cartridge (25) can be inserted into the extension part when this part is mounted in the housing (11) of the casing (10). The cartridge is sealed therein when the sealing cap (21) is put in place to close the opening at the rear end of the part.

A split cycle internal combustion engine apparatus includes a combustion cylinder accommodating a combustion piston and a compression cylinder accommodating a compression piston. The apparatus is arranged to provide compressed fluid to the combustion cylinder. The compression cylinder is coupled to a first liquid coolant reservoir and a second liquid coolant reservoir. A controller is arranged to receive an indication of at least one parameter associated with the engine, and control delivery of at least one of the first liquid coolant from the first liquid coolant reservoir and the second liquid coolant from the second liquid coolant reservoir to the compression cylinder based on the indication of the at least one parameter such that the at least one liquid coolant vaporises into a gaseous phase during a compression stroke.

An insulating cover for a central heating system filter is provided in two parts. The insulating cover may be made from, for example, expanded polypropylene foam. The cover may include magnets for attracting and retaining magnetic debris within the filter. The cover may include a leadscrew arrangement to assist with removal of the cover from the filter for servicing.

An aqueous fluid filter assembly with aeration mitigation includes a cap, a bowl engaging the cap and defining a filter volume, and a filter element disposed in the filter volume. The filter element is sealed against an interior of the cap and an interior of the bowl to provide an unfiltered volume and a filtered volume. An inlet is in fluid communication with the unfiltered volume and an outlet is in fluid communication with the filtered volume via a pickup section. The pickup section has a pick-up section inlet extending into the filtered volume and an air-metering orifice, wherein the air-metering orifice has a diameter less than 30% of the diameter of the pick-up section inlet and the pick-up section inlet is located below the air-metering orifice.

An aqueous fluid filter assembly with aeration mitigation includes a cap, a bowl engaging the cap and defining a filter volume, and a filter element disposed in the filter volume. The filter element is sealed against an interior of the cap and an interior of the bowl to provide an unfiltered volume and a filtered volume. An inlet is in fluid communication with the unfiltered volume and an outlet is in fluid communication with the filtered volume via a pickup section. The pickup section has a pick-up section inlet extending into the filtered volume and an air-metering orifice, wherein the air-metering orifice has a diameter less than 30% of the diameter of the pick-up section inlet and the pick-up section inlet is located below the air-metering orifice.

An inner case being substantially cylindrical and being covered at an upper end is provided to cover a heater being substantially rod-shaped. A float being substantially plate-shaped and having substantially the same inner diameter as an inner diameter of the inner case is provided movably in the vertical direction in the inner case, and in the float, a hole through which the heater is inserted is formed. Gas is enclosed in a space surrounded by the inner case and the float. The length in the vertical direction of the inner case is smaller than the length in the vertical direction of the heater. In addition, when the float is positioned at a lower end of the inner case, a gap exists between the float and a bottom surface of a filter case.

An inner case being substantially cylindrical and being covered at an upper end is provided to cover a heater being substantially rod-shaped. A float being substantially plate-shaped and having substantially the same inner diameter as an inner diameter of the inner case is provided movably in the vertical direction in the inner case, and in the float, a hole through which the heater is inserted is formed. Gas is enclosed in a space surrounded by the inner case and the float. The length in the vertical direction of the inner case is smaller than the length in the vertical direction of the heater. In addition, when the float is positioned at a lower end of the inner case, a gap exists between the float and a bottom surface of a filter case.

A purification device comprises a main body having an opening in a front-face thereof; a rotator disposed in the opening to be rotatably mounted on the main body; a manipulation structure spaced from and above the rotator and rotatably connected to a top face of the main body, the manipulation structure protruding forward of the main body; and a water-outlet including; a first cover fixed to the rotator through the opening, the first cover protruding forward of the main body, and a top of the first cover being connected to a bottom of the manipulation structure; a second cover vertically movable while being held in contact with the first cover; and a nozzle on a bottom of the second cover; wherein when the second cover rises to a highest level, a top of the second cover is located in a space between the rotator and the manipulation structure.

A purification device comprises a main body having an opening in a front-face thereof; a rotator disposed in the opening to be rotatably mounted on the main body; a manipulation structure spaced from and above the rotator and rotatably connected to a top face of the main body, the manipulation structure protruding forward of the main body; and a water-outlet including; a first cover fixed to the rotator through the opening, the first cover protruding forward of the main body, and a top of the first cover being connected to a bottom of the manipulation structure; a second cover vertically movable while being held in contact with the first cover; and a nozzle on a bottom of the second cover; wherein when the second cover rises to a highest level, a top of the second cover is located in a space between the rotator and the manipulation structure.