Abstract: An engine arrangement includes a first engine unit, a second engine unit and at least one member for fastening the second engine unit to the first engine unit. The first unit and the second unit include fluid ports for achieving a fluid flow between the first and second unit. The engine arrangement further includes a valve for opening and closing at least one of the fluid ports and the fastening member is moveably arranged relative to the first unit and second unit and is arranged to act on the valve.

Abstract: A control system for an internal combustion engine includes an electric supercharger that includes a compressor wheel that is configured to be rotated by an electric motor. The control system includes a bypass passage, a bypass valve, and an exhaust gas recirculation passage. The control device is configured to control the electric supercharger and the bypass valve based on an operation condition of the internal combustion engine. The control device is configured to cause a stepping operation of the electric supercharger in which acceleration and stopping of the compressor wheel are repeated within a predetermined cleaning time after operation of the internal combustion engine is stopped.

Abstract: There is provided an exhaust gas cleaning apparatus for cleaning exhaust gas discharged from an internal combustion engine that includes an upstream side exhaust pipe and a downstream side exhaust pipe that are located on an upstream side and a downstream side, respectively, with respect to a flow direction of the exhaust gas discharged from the internal combustion engine. A filter unit is disposed between the upstream side exhaust pipe and the downstream side exhaust pipe and removably connected at opposite sides thereof to the upstream side exhaust pipe and the downstream side exhaust pipe. The filter unit includes a filter that captures particulate matter contained in the exhaust gas flowing in the upstream side exhaust pipe, a casing in which the filter is accommodated, and a thermal insulator that covers an entire outer peripheral surface of the casing. A handle is provided on the thermal insulator.

Abstract: A rotor for a compressor system includes a rotor body having a coolant manifold with an inlet runner and a plurality of coolant supply conduits extending from the inlet runner toward an inner heat exchange surface. The coolant supply conduits may have a circumferential and axial distribution, and extend through struts enhancing stiffness in the rotor body.

Abstract: A shovel includes a lower traveling body; an upper turning body that is installed on the lower traveling body; an internal-combustion engine disposed in the upper turning body; an oil hydraulic pump that discharges hydraulic oil by power of the internal-combustion engine; a hydraulic actuator that is driven by the hydraulic oil discharged by the oil hydraulic pump; a fuel container that stores fuel of the internal-combustion engine; a first detector that detects a residual quantity state of the fuel; a reducing agent container that stores a reducing agent to be used in a selective catalytic reduction system; a second detector that detects a residual quantity state of the reducing agent; and an image display unit that is installed in a cabin, wherein the image display unit is configured to simultaneously image-display the residual quantity state of the fuel and the residual quantity state of the reducing agent.

Abstract: A turbocharger adjustment device adapted to alter the performance of a variable geometry turbocharger delivering boost pressure to an engine, comprising a replacement piston cap and a movable adjustment rod. The turbocharger adjustment device integrates with the actuator controlling the opening and closing of the variable inlet through which exhaust gas from the engine passes to turn the turbine wheel and compressor of the turbocharger. The replacement piston cap replaces the cap of the actuator so that the adjustment rod extends into the actuator housing interior to abut against and restrict the movement of the piston which actuates the variable inlet, preventing the piston from opening the variable inlet. The turbocharger adjustment device prevents the decrease in boost pressure caused by the variable inlet opening in response to an increase in exhaust gas pressure, and allows the user to customize the maximum area of the variable inlet.

Abstract: There is provided: a NOx-occlusion-reduction-type catalyst 32 that is provided in an exhaust passage 13 of an internal combustion engine 10; a NOx purge control unit 60 that performs a NOx purge control of setting the exhaust in the rich state and reducing and purifying NOx occluded in the NOx-occlusion-reduction-type catalyst 32; and a NOx purge inhibition processing unit 70 that inhibits NOx purge control when the internal combustion engine 10 becomes a motoring state in which fuel injection is stopped, and inhibiting, when the internal combustion engine 10 has started fuel injection during the inhibition of the NOx purge control, performance of the NOx purge control from the start of the fuel injection until a predetermined period of time has elapsed.

Abstract: An exhaust gas turbocharger (10) including a turbine section (14), a compressor section (12), a bearing housing (16) disposed between an fluidly connected to the turbine section (14) and the compressor section (12), and an oil flow means connected to the bearing housing (16) for controlling and metering oil flow to the bearing assembly (42).

Abstract: An exhaust-gas aftertreatment system for an internal combustion engine, having a catalyst device, which is designed to catalytically react at least one exhaust-gas component with a reactant, and a reactant-metering device, which is arranged upstream of the catalyst device along a flow path of the exhaust gas through the exhaust-gas aftertreatment system. The reactant-metering device has at least one exhaust-gas flow nozzle.

Abstract: Turbochargers include a compressor comprising a compressor body extending from a compressor back face and a plurality of blades extending from the compressor body, a turbine comprising a turbine body extending from a turbine back face and a plurality of blades extending from the turbine body, and a shaft coupled at a first end to the compressor back face and at a second end to the turbine back face. The shaft includes an internal passage extending from the first end towards the second end in fluid communication with the compressor blades and one or more fans disposed within the internal passage and configured to draw air toward the second end of the shaft. The internal passage of the shaft is in fluid communication with the compressor blades via one or more bleed air passages, which can be biased towards an outer diameter of the compressor body.

Abstract: A spray device 40 sprays a liquid oxidation catalyst 41 into an interior of an upstream small-diameter pipe 32 which is disposed upstream of an oxidation catalyst 25, so that the liquid oxidation catalyst 41 is supplied to particulate matters which have accumulated on an upstream end face 31 of the oxidation catalyst 25 and a diametrically expanded pipe 33 which is disposed upstream of the upstream end face 31 to thereby oxidize and remove the accumulated particulate matters by a catalytic action of the supplied liquid oxidation catalyst 41, whereby it becomes possible to remove the particulate matters which have accumulated on the upper end face 31 of the oxidation catalyst 25 which is disposed in an exhaust passageway and a portion of the exhaust passageway which is situated upstream of the upstream end face 31.

Abstract: A centrifugal compressor for a turbocharger includes an inlet-adjustment mechanism in an air inlet for the compressor, operable to move between an open position and a closed position in the air inlet. The inlet-adjustment mechanism includes a plurality of blades disposed about the air inlet and each pivotable about one end of the blade, the blades extending through a slot in the air inlet wall when the blades are in the closed position so as to form an orifice of reduced diameter relative to a nominal diameter of the inlet. Movement of the inlet-adjustment mechanism from the open position to the closed position is effective to shift the compressor's surge line to lower flow rates.

Abstract: An airfoil assembly includes at least one airfoil that has a hollow interior. First and second platforms are disposed between the airfoil. At least one tie-spar extends along an axis through the first platform, the hollow interior of the airfoil, and the second platform. There is a thermal expansion difference between a thermal expansion of the tie-spar in the axial direction and the combined thermal expansion of the airfoil and the first and second platform in the axial direction. At least one spacer portion is arranged on the tie-spar. The spacer portion has a thermal expansion in the axial direction that is greater than the thermal expansion difference such that the spacer portion maintains the tie-spar under tension and clamps the first and second platforms on the airfoil.

Abstract: An exhaust gas system for an internal combustion engine includes a first exhaust gas line leading into a first muffler; a second exhaust gas line arranged fluidly parallel to the first exhaust gas line and leading into a second muffler, wherein the first and second exhaust gas lines are respectively connected upstream of the first and second muffler at a branch to a common exhaust gas feed line; a control valve arranged in the first exhaust gas line upstream of the first muffler; and a damping device fluidly arranged between the branch and the control valve and adapted for damping exhaust gas resonance vibrations.

Abstract: An exhaust gas flap, especially for the exhaust gas stream of an internal combustion engine, includes a flap tube (22) and a flap diaphragm (24) carried in an interior of the flap tube on a pivot shaft (16) rotatable about a pivot axis. A flap wing (28, 30) is mounted on the pivot shaft (16) and a wing stop (32, 34) is associated with the flap wing (28, 30) on an inner circumferential area of the flap tube. The flap wing (28, 30) has a mounting area (56, 58) with uncurved mounting surfaces (60, 64). Opposing mounting surfaces (62, 66) or/and a mounting recess (52, 54) at the pivot shaft (16) provide an opposing mounting area that at least partially receives the flap wing mounting area (56, 58) of the flap wing (28, 30), the opposing mounting area being provided on the outer circumferential area of the pivot shaft (16).

Abstract: A reducing agent is supplied to an NOx selective catalytic reduction catalyst in a suitable manner, while suppressing NOx from being produced by oxidation of ammonia in the NOx catalyst. In cases where the temperature of the NOx catalyst is equal to or higher than a predetermined temperature at which ammonia is oxidized, an amount of the reducing agent to be supplied to the NOx catalyst is made larger, when an air fuel ratio of exhaust gas flowing into the NOx catalyst is small, than it is large.

Abstract: The invention concerns a method for operating a gear pump, in particular for delivering engine oil in an oil circuit of a vehicle, wherein a delivery device is provided with at least two gear wheels, in particular with external toothing or configured as spur gears and arranged in a housing, wherein by means of the gear wheels a fluid to be conveyed can be delivered starting from at least one housing inlet through to at least one housing outlet, and wherein the gear wheels are arranged behind each other viewed in the axial direction (x). According to the invention, an adjustment device is provided, by means of which the gear wheels can be twisted and/or displaced relative to each other depending on the pressure conditions inside the housing, in particular depending on the vacuum pressure at the housing inlet and/or depending on the fluid back-pressure at the housing outlet.

Abstract: Methods and systems are provided for a heat exchanger phase change material installed as a component of a variable exhaust tuning system. In one example, a method may include absorbing excess heat energy from exhaust gases during and after an engine-on event within a heat exchanger material, releasing heat energy stored in the heat exchanger material during and after an engine-off event, and heating an adjustable exhaust valve with the heat energy stored in the heat exchanger material.

Abstract: Methods and systems are provided for indicating a presence or absence of a source of degradation stemming from one of an intake manifold, exhaust system, or engine of an engine system. In one example, a method comprises rotating the engine unfueled and indicating the source of degradation based on both an intake air flow and an exhaust flow, as compared to baseline intake air flow and baseline exhaust flow. In this way, a source of degradation may be pinpointed, which may increase a lifetime of a vehicle engine system, reduce undesired emissions, and which may increase customer satisfaction resulting from shorter time spent on diagnosing such a source of degradation.

Abstract: An exhaust gas pressure regulator for a combustion engine includes a regulator housing and an inner diffuser assembly arranged inside the regulator housing so that an exhaust gas flow duct is formed between an inner surface of the regulator housing and an outer surface of the inner diffuser assembly. The inner diffuser assembly includes a front portion and a regulating piston that is moveable relative to the front portion and the regulator housing between an idle position in which the exhaust gas flow duct is open, and a pressurized position in which the regulating piston at least partly closes the exhaust gas flow duct. The inner diffuser assembly includes at least one throttled flow passage between the gas flow duct and an exhaust gas pressure chamber defined by the regulating piston and an interior surface of the front portion.