An internal combustion engine includes: at least one magnet (10) inserted into at least one immersion container (8) present in the fuel tank (3), at least one magnet (20) applied on the cooling duct; at least one pair of magnets (30) arranged on the fuel duct, the fuel duct defining a coil; at least one pair of magnets (40) applied on the air suction pipe; and at least one pair of magnets (50) applied on the fuel filter, the magnets (10), (20), (30), (40) and (50) being permanent magnets including rare earth elements. The internal combustion engine includes at least one metal sheet (1) including paramagnetic and/or ferromagnetic elements applied on at least one portion of at least one internal surface (2) of the tank (3).

An internal combustion engine includes: at least one magnet (10) inserted into at least one immersion container (8) present in the fuel tank (3), at least one magnet (20) applied on the cooling duct; at least one pair of magnets (30) arranged on the fuel duct, the fuel duct defining a coil; at least one pair of magnets (40) applied on the air suction pipe; and at least one pair of magnets (50) applied on the fuel filter, the magnets (10), (20), (30), (40) and (50) being permanent magnets including rare earth elements. The internal combustion engine includes at least one metal sheet (1) including paramagnetic and/or ferromagnetic elements applied on at least one portion of at least one internal surface (2) of the tank (3).

An exhaust gas aftertreatment unit includes a selective catalytic reduction device that treats engine exhaust gas, a connecting pipe that guides the engine exhaust gas to the reduction device, a reducing agent injection device disposed on the connecting pipe to inject a reducing agent into the exhaust gas, and a cooling water flowpath that guides cooling water to an internal flowpath of the injection device. The cooling water path includes a first flowpath joined with the internal flowpath, second and third flowpaths branching off from the first flowpath, and a branching point where the first flowpath branches into the second flowpath and the third flowpath is positioned higher than a connecting portion of the injection device and the first flowpath. The third flowpath extends further upward than the second flowpath from the branching point. The second and third flowpaths merge on an opposite side of the branching point.

An exhaust gas aftertreatment unit includes a selective catalytic reduction device that treats engine exhaust gas, a connecting pipe that guides the engine exhaust gas to the reduction device, a reducing agent injection device disposed on the connecting pipe to inject a reducing agent into the exhaust gas, and a cooling water flowpath that guides cooling water to an internal flowpath of the injection device. The cooling water path includes a first flowpath joined with the internal flowpath, second and third flowpaths branching off from the first flowpath, and a branching point where the first flowpath branches into the second flowpath and the third flowpath is positioned higher than a connecting portion of the injection device and the first flowpath. The third flowpath extends further upward than the second flowpath from the branching point. The second and third flowpaths merge on an opposite side of the branching point.

An exhaust gas aftertreatment unit includes a selective catalytic reduction device that treats engine exhaust gas, a connecting pipe that guides the engine exhaust gas to the reduction device, a reducing agent injection device disposed on the connecting pipe to inject a reducing agent into the exhaust gas, and a cooling water flowpath that guides cooling water to an internal flowpath of the injection device. The cooling water path includes a first flowpath joined with the internal flowpath, second and third flowpaths branching off from the first flowpath, and a branching point where the first flowpath branches into the second flowpath and the third flowpath is positioned higher than a connecting portion of the injection device and the first flowpath. The third flowpath extends further upward than the second flowpath from the branching point. The second and third flowpaths merge on an opposite side of the branching point.

A work vehicle includes an engine mounted to a vehicle body frame. A cooling fan unit is arranged on one side of the engine. A coolant fluid radiator is arranged on an opposite side of the cooling fan unit. A cooling unit is arranged on an opposite side of the coolant fluid radiator. A link mechanism connects the cooling unit such that a distance between the cooling unit and the coolant fluid radiator can be changed. The link mechanism can utilize a four-link mechanism having a pair of upper links and a pair of lower links.

A work vehicle includes an engine mounted to a vehicle body frame. A cooling fan unit is arranged on one side of the engine. A coolant fluid radiator is arranged on an opposite side of the cooling fan unit. A cooling unit is arranged on an opposite side of the coolant fluid radiator. A link mechanism connects the cooling unit such that a distance between the cooling unit and the coolant fluid radiator can be changed. The link mechanism can utilize a four-link mechanism having a pair of upper links and a pair of lower links.

A method for an engine is presented, wherein during a first condition, pressurized gas from an engine coolant degas bottle to an ejector positioned in a vent line coupled to a fuel vapor canister; and the contents of the fuel vapor canister are purged to an engine intake. The ejector may draw atmospheric air into the fuel vapor canister, thus enabling purging of the fuel vapor canister even when an engine intake vacuum is below a threshold. In this way, boosted engines and other engines configured to operate with reduced intake vacuum may execute canister purging events that are independent of engine intake pressure.

A coolant pump includes an impeller pump wheel, a pump housing defining an outlet volute, and an outlet valve arrangement. The pump housing comprises an outlet volute housing which defines a first outlet channel comprising a valve opening. The valve opening is defined by a valve seat which defines a valve seat plane and a symmetry plane. The symmetry plane is arranged in the middle of and rectangular to the valve seat plane. The outlet valve arrangement is in the first outlet channel and comprises a valve flap which opens/closes the valve opening. The valve flap comprises a flap seat corresponding to the valve seat. The valve flap rotates around a pivot axis parallel to the symmetry plane and having an eccentricity from the symmetry plane which is between 1/20 and 1/1 of a distance of the pivot axis to the valve seat plane when the valve flap is open.

A coolant pump includes an impeller pump wheel, a pump housing defining an outlet volute, and an outlet valve arrangement. The pump housing comprises an outlet volute housing which defines a first outlet channel comprising a valve opening. The valve opening is defined by a valve seat which defines a valve seat plane and a symmetry plane. The symmetry plane is arranged in the middle of and rectangular to the valve seat plane. The outlet valve arrangement is in the first outlet channel and comprises a valve flap which opens/closes the valve opening. The valve flap comprises a flap seat corresponding to the valve seat. The valve flap rotates around a pivot axis parallel to the symmetry plane and having an eccentricity from the symmetry plane which is between 1/20 and 1/1 of a distance of the pivot axis to the valve seat plane when the valve flap is open.