Abstract: A catalytic reaction unit has a plurality of catalyst bed layers arranged vertically, each of the catalyst bed layers being filled with a solid catalyst, and an inclined surface on the upper part of the corresponding solid catalyst arranged between adjacent catalyst bed layers; a liquid phase feeding subunit arranged above the topmost catalyst bed layer, and the liquid phase feed is guided by the inclined surface to sequentially enter each catalyst bed layer from top to bottom; a gas phase feeding subunit arranged between the catalyst bed layer of an upper layer and the inclined surface of the next layer, and a gas phase channel relatively isolated from the gas phase feeding subunit. The gas phase product generated after the gas-phase feed and the liquid phase feed react in the catalyst bed layer directly enters the gas phase channel.

Abstract: The present disclosure provides an exhaust gas aftertreatment system for an ammonia fueled internal combustion engine comprising: a passive SCR catalyst system arranged downstream of the engine, the passive SCR catalyst system comprising an SCR catalyst and no reductant injection system, and an active SCR catalyst system arranged downstream of the passive SCR catalyst system, the active SCR catalyst system comprising an SCR catalyst, a first NOx sensor and a reductant injection system, the reductant injection system comprising a reductant injector and a controller controlling reductant injection based on an NOx concentration measured by the first NOx sensor.

Abstract: Disclosed are a rotary compressor and a refrigeration cycle device having the same. The rotary compressor and the refrigeration cycle device having the same may include a casing, a main bearing, a sub bearing, a cylinder, a roller, a vane, and an injection passage, and the injection passage may be disposed in at least one selected from the main bearing, the sub bearing, and the cylinder to communicate with a corresponding compression chamber after a compression start angle of the corresponding compression chamber. Thus, a maximum injection section may be secured, while a refrigerant being injected may be suppressed from being leaked toward a suction port.

Abstract: An apparatus for diagnosing a post-processing system includes a first catalyst, an exhaust heat recovery system, and a second catalyst sequentially disposed on an exhaust line. The apparatus further includes a main bypass line, an auxiliary bypass line, a first bypass valve, and a second bypass valve. The apparatus further includes a controller configured to determine whether a first temperature sensor configured to measure a temperature of an exhaust gas on an upstream side of the first bypass valve, a second temperature sensor configured to measure a temperature of the exhaust gas on an upstream side of the exhaust heat recovery system, a third temperature sensor configured to measure a temperature of the exhaust gas on the downstream side of the exhaust heat recovery system, the first bypass valve, and the second bypass valve are abnormal, depending on whether a predetermined diagnosis condition is satisfied.

Abstract: An exhaust gas aftertreatment system for an internal combustion engine of a vehicle includes: an exhaust gas line, a main SCR catalyst, a diesel particulate filter arranged upstream of the main SCR catalyst, a first reducing agent injector associated with the main SCR catalyst, a close-coupled SCR catalyst, a second reducing agent injector associated with the close-coupled SCR catalyst, a sensor arrangement and a control unit. The control unit is set up to detect sensor signals of the sensor arrangement, to control components of the exhaust gas aftertreatment system and to determine the efficiency of the SCR catalysts. The efficiencies of the SCR catalysts are determined based on the sensor signals from the sensor arrangement and to modulate the efficiency of the close-coupled SCR catalyst as a function of the efficiency of the main SCR catalyst.

Abstract: A valve lift conversion control mechanism includes a hydraulic transmission device that includes at least two device bodies, a check valve and a solenoid valve. The device bodies are in communication with each other through an oil circuit. The solenoid valve is configured to supply oil to the oil circuit through the check valve. The second device body is configured to be pressed downwards by a second rocker arm to be driven to press the oil in the oil circuit to increase an oil pressure, and a first device body is configured to press a first valve controlled by a first rocker arm downwards under the increased oil pressure in the oil circuit. The valve system of the engine includes the valve lift conversion control mechanism.

Abstract: A gaseous fuel engine system includes an engine forming a cylinder, and an intake valve movable to open and close an intake port to the cylinder. The engine system also includes a fuel system having a fuel injector to inject a gaseous fuel such as a gaseous hydrogen fuel to mix with a flow of intake air for combustion in the cylinder. The engine system further includes a cam coupled to the intake valve, and a variable valve actuator coupled to the intake valve and arranged to position the intake valve at a flow-throttling middle position to improve fuel and air mixing, such as in response to engine load transients.

Abstract: A compressor includes a housing, a cylinder, a roller, and a vane. The cylinder is inside the housing and has a cylinder chamber formed therein. The roller is configured to be rotatable in the cylinder chamber, and has a vane groove on an outer surface and an oil guide that extends between the vane groove and the inner surface of the roller. The oil guide guides oil within the vane groove. The vane is configured to be inserted and moved in the vane groove. The vane and the roller together partition the cylinder chamber into an inlet chamber into which a refrigerant is introduced and a compression chamber in which the refrigerant is compressed.

Abstract: The invention relates to a compressor system, in particular a screw compressor, for compressing gases, preferably air, comprising a compressor block (11) in which a compressor chamber (12) is formed in which the gas is compressed via mechanical compression means (13), wherein the compressor chamber (12) has an inlet opening (14) on the inflow side and an outlet opening (15) on the outflow side, and a control device (16) for controlling a drive (17) of the compression means (13), wherein the control device (16) is operatively connected to a temperature sensor (19) and/or a humidity sensor (20) in order to determine state conditions of the gas entering at the inlet opening (14), characterized in that the temperature sensor (19) and/or the humidity sensor (20) are arranged at or in the control device (16) within the compressor system for detecting a temperature Tc prevailing there or a humidity Fc prevailing there, and the control device (16) comprises a processing device (23) in order to draw conclusions from t

Abstract: A scroll compressor includes a housing and a rotatable drive shaft disposed within the housing and having an eccentric end portion. First and second support bearings rotatably couple the drive shaft with the housing and each includes a plurality of rolling elements, at least one of which is ceramic, and an annular cage formed of a polymeric material. A scroll member is disposed within the housing chamber and a drive bearing rotatably couples the shaft eccentric portion with the scroll member such that the scroll member orbits about the central axis. The drive bearing includes a plurality of rolling elements, at least one of which is ceramic, and an annular cage formed of a polymeric material. Further, a solution formed of refrigerant and oil is directed to each one of the drive bearing and the first and second support bearings so as to lubricate the rolling elements.

Abstract: An electric pump may include: a motor unit; and a pump unit configured to be driven by the motor unit and discharge water. The motor unit may include: a body housing including a battery holding part configured to hold at least one battery pack; and an electric motor accommodated in the body housing and configured to drive the pump unit. The at least one battery pack is configured to be used in the electric pump and in an apparatus other than the electric pump.

Abstract: A compression ignition internal combustion engine (30) for a heavy-duty diesel vehicle comprising an exhaust system (32) comprising a composite oxidation catalyst (12, 42) and a soot filter substrate (44, 50) disposed downstream from the composite oxidation catalyst comprising: a substrate (5), preferably a honeycomb flow-through substrate monolith, having a total length L and a longitudinal axis and having a substrate surface extending axially between a first substrate end (I) and a second substrate end (O); two catalyst washcoat zones (1, 2) arranged axially in series on and along the substrate surface.

Abstract: A vehicle includes an internal combustion engine. An exhaust system is connected to an exhaust output of the internal combustion engine. The exhaust system includes a passive storage component upstream of an electric heating unit and a selective catalytic reducer and a particulate filter downstream of the electric heating unit. A controller is controllably coupled to the exhaust system and configured to initiate a soot burn of the particulate filter while maintaining the passive storage component within a predetermined temperature range.

Abstract: The technology described herein relates to, among other topics, a power system using solar assisted equipment that significantly reduces the amount of fossil fuels burned in the energy production process. The technology described in this disclosure relates to providing a constant flow of thermal heated water to a boiler (e.g., heated using a fossil fuel), which in turn provides steam to operate an electricity generator. The thermal heated water raises the temperature of the water used for creating steam thus reducing the overall boil time (and consequently reducing the amount of time fossil fuels are being consumed).

Abstract: A suction valve control system of a fluid pump, that is configured to discharge fluid during a plurality of discharge cycles, may include a plurality of suction valves for respective cylinders of a fluid end of the fluid pump. The plurality of suction valves may be configured to close during the plurality of discharge cycles in accordance with a normal operation of the plurality of suction valves. The suction valve control system may include a controller configured to cause, responsive to a deactivating event for a cylinder of the respective cylinders, a suction valve of the cylinder to be maintained in an open position throughout one or more discharge cycles of the plurality of discharge cycles, while at least one other suction valve of the plurality of suction valves has the normal operation during the one or more discharge cycles.

Abstract: An electric compressor includes a housing, a driving shaft, an electric motor, and a compression mechanism. The housing includes a first housing and a second housing. The electric motor includes a stator and a rotor. The first housing has a first end surface. The second housing has a second end surface. The first housing and the second housing are fixed by a first fastener. The stator is fixed to the first end surface by a second fastener. The first end surface has a first hole through which the first fastener is inserted and a second hole in which the second fastener is fixed.

Abstract: A reactor for carrying out a chemical reaction includes a reactor wall and at least one group of M reaction tubes, each of which has an electrically heatable heating section that extends between a first and a second removal region. Each heating section has a respective feed region in a region which extends over 20% to 80% of a heating length of the heating section and electrically conductive feed elements. Each group M is paired with the feed elements connected to the feed regions of the group, and different phases of the alternating current can be fed to different feed elements paired with a group. Each group is paired with M first and M second removal elements connected to the first or second removal regions of the group, respectively. Each group is paired with a first and a second star bridge.

Abstract: A method for improving an exhaust system including: receiving, at a heater, a current in response to a signal from a controller; generating heat, via the heater, inside a component of the exhaust system; injecting, via a dosing solution injector, a dosing solution into the heater; generating, by the heater, a vapor comprising the dosing solution; directing, by the heater, the vapor into the component; generating, by a magnet, a magnetic field inside the component; disrupting and slowing, by the magnet and magnetic field, an exhaust gas flow in the component.

Abstract: A rotary heat engine is comprised of a central crankshaft, a plurality of cylinder assemblies, and a plurality of heat exchanger assemblies. The central crankshaft has first end and a second end defining an axis of rotation. The plurality of cylinder assemblies are coupled to the central crankshaft. The plurality of heat exchanger assemblies are each associated with the plurality of cylinder assemblies, respectively.

Abstract: Screw pump (2) comprising: a casing (3) with an inlet (30), an outlet (31) and a flow chamber (32) between the inlet and the outlet; at least two screws (4, 5, 6) housed in the flow chamber to force a fluid flow through the flow chamber from the inlet to the outlet; and a flexible coupling (11) connected to one of the screws to couple the screw to a drive motor (10).