Abstract: An electric coolant pump may include a valve device controlled at a discharge side by pressure. The valve device may include a coolant inlet, a first coolant outlet, and a second coolant outlet. The valve device may be configured to at least one of open and close at least one of the first coolant outlet and the second coolant outlet based on a selected operating point and a pressure in a coolant.

Abstract: A seal for a gas turbine engine including an interlayer between a substrate and an abradable layer, the interlayer containing abrasive particles of which at least some abrasive particles protrude out of an interface that abuts the abradable layer.

Abstract: A cooling-water control valve device includes a valve member, a housing for accommodating the valve member, a pipe unit, a valve seat member, a spring and so on. The pipe unit has, at its axial end on a side facing to the valve member, an outside cylindrical portion and an inside cylindrical portion, which is coaxially arranged with the outside cylindrical portion at a radial-inside position of the outside cylindrical portion. An annular accommodation space is formed between the inside cylindrical portion and the outside cylindrical portion. The spring and the valve seat member are arranged in the annular accommodation space.

Abstract: A sliding element may include a base material having an annular external surface upon which a bonding layer and a sliding layer are sequentially deposited. The sliding layer may be composed of hard amorphous carbon of a combined matrix with sp3/sp2 bonds. The sliding layer may include a plurality of nanoparticles of graphite incorporated within the combined matrix of sp3/sp2.

Abstract: A cylinder housing for a reciprocating-piston internal combustion engine, in particular of a motor vehicle, includes a first cylinder which is delimited by a first cylinder barrel and a second cylinder which is delimited by a second cylinder barrel. The cylinders differ from one another with respect to their respective inner contour formed by the respective cylinder barrels.

Abstract: Methods and systems are provided for an engine configured to deactivate at least some cylinders. In one example, an engine system may comprise a first group of cylinders having a first compression ratio and a second group of cylinders having a second compression ratio greater than the first.

Abstract: The invention regards an asymmetric submerged air intake in a surface of a structure, wherein the air intake includes a submerged ramp extending from the surface. The ramp has a front end, a rear end, a ramp floor and two ramp side walls. The ramp floor is inclined with respect to the surface. At the rear end an entrance to an internal duct of the structure is provided. It is provided that one of the ramp side walls is a straight wall extending straight in the longitudinal direction of the ramp and that the other of the ramp side walls is a curved wall that diverges from the straight wall along the length of the ramp.

Abstract: An engine control system includes a dual fuel internal combustion engine, a fuel system including a liquid fuel source and a gaseous fuel source, and a controller. The engine control system further includes a liquid fuel control module and at least one gaseous fuel control module associated with a first and second subset of cylinders, each communicatively connected over a network. The controller has an operating mode and a cylinder deactivation mode. The controller in the operating mode is configured to instruct the liquid fuel control module and the at least one gaseous fuel control module to operate the plurality of cylinders in a dual fuel mode. The controller in the cylinder deactivation mode transitions the plurality of cylinders to a liquid-fuel only mode over a phase out period, deactivates the first subset of cylinders, and then transitions to the dual fuel mode in the second subset of cylinders.

Abstract: An impeller includes a central, shaft or a tube for mounting on a shaft, a hollow hub is located around the shaft or tube, and a series of blades are attached to the outside of the hub by their bases. A reinforcing rib is provided for each blade, and extends on the shaft or tube in a radial direction and forms a facial connection between the shaft or tube and the inside of the hub at a position opposite the attachment of the base of a blade concerned.

Abstract: A sensor system for an engine for which an automatic stop-restart control is performed, the sensor system including: an exhaust gas sensor including a heater that heats a sensor element; and a control unit configured to: while the engine is stopped by the automatic stop-restart control, execute a preheat control of adjusting a temperature of the sensor element to a preheat temperature lower than an activation temperature; when an automatic start condition is satisfied, stop the preheat control and increase the temperature of the sensor element to the activation temperature; when an automatic stop condition is satisfied and a delay condition has not been satisfied, set the preheat temperature to a first temperature; and when the automatic stop condition is satisfied and the delay condition has been satisfied, set the preheat temperature to a second temperature higher than the first temperature.

Abstract: A control apparatus for an internal combustion engine includes an exhaust gas sensor that has a sensor element and a heater for electrically heating the sensor element, a sensor circuit that detects the electric current generated by the exhaust gas sensor, a controller configured to: carry out starting processing to start the internal combustion engine, learn a value of the output of the sensor circuit when the starting processing is carried out by the controller, and control a temperature of the sensor element by using the heater, and controls the temperature of the sensor element to less than the predetermined temperature until the learning of the output value of the sensor circuit by the controller is completed after the starting processing is carried out by the controller.

Abstract: Conventional APUs for diesel-electric locomotives may include an AC electric generator and typically require additional hardware to be installed to convert the AC power output by the generator to DC power that can power electrical systems or charge batteries in the locomotive. According to some embodiments, there is provided an auxiliary power unit (APU) or system for operation in cooperation with a primary engine. The APU includes a secondary engine; a primary engine coolant heating system, or a primary engine lubricant heating system; a control system that automatically shuts down the primary engine and starts the secondary engine responsive to a predetermined condition; and a Direct Current (DC) power generator that generates an output voltage, the DC power generator being driven by the secondary engine.

Abstract: A reciprocating engine includes a crankshaft and a connecting rod rotatably coupled to the crankshaft. The connecting rod defines a fluid passage extending along a length thereof. The reciprocating engine also includes a piston dome coupled to the connecting rod, the piston dome defining an inlet in fluid communication with the fluid passage of the connecting rod for receiving a fluid from the fluid passage of the connecting rod, a cooling passage in fluid communication with the inlet for circulating the fluid through the piston dome, and an exit in fluid communication with the cooling passage.

Abstract: Systems and methods for operating an internal combustion engine are described. In one example, an engine's position is adjusted during engine stopping so that the engine may be less likely to stop at a crankshaft angle where rotating a fuel pump may increase engine cranking torque due to work performed by the fuel pump.

Abstract: A saddle riding vehicle includes: a body frame; a fuel tank; an upright internal combustion engine; a fuel injection device; and a high-pressure fuel pump. The high-pressure fuel pump is configured to be driven by one of an intake-side camshaft and an exhaust-side camshaft. The high-pressure fuel pump is mounted on an upper surface of a cylinder head cover in an attitude inclined rearward toward the other of the camshafts. The high-pressure fuel pump can thus be protected from disturbances from the sides, and the length of a high-pressure pipe for feeding fuel from the high-pressure fuel pump to the fuel injection device can be shortened. The vehicle protects the high-pressure fuel pump from disturbances from the sides, and prevents acceleration of vaporization of fuel by reducing heat which the high-pressure fuel pump receives from the cylinder block.

Abstract: The present disclosure relates to a current rectifier for being arranged on the suction area of a ventilator, with an axial initial flow side and an axial exit flow side, wherein the current rectifier comprises several crossing struts formed by at least one circumferential strut and by at least one radial strut, and a pressure measuring conduit is constructed at least in one of the struts and which comprises at least one opening facing the exit flow side, and wherein the pressure measuring conduit comprises a measuring opening for being connected to a measuring line for the connection to a pressure sensor or a pressure sensor is integrated in the pressure measuring conduit.

Abstract: Methods and systems are provided for conducting vehicle fuel system and/or evaporative emissions system diagnostics, where the diagnostics rely on a positive pressure with respect to atmospheric pressure. In one example, a method comprises activating an electric compressor positioned in an intake of an engine configured to receive purge gasses from the evaporative emissions system under boosted engine operation and natural engine operation, to direct a positive pressure with respect to atmospheric pressure to the fuel system and/or evaporative emission system to conduct said diagnostic. In this way, diagnostics that rely on positive pressure with respect to atmospheric pressure may be conducted in vehicles with a dual-path purge system, without introduction of a pump in the evaporative emissions system.

Abstract: According to one embodiment, a machine control system includes: a selecting unit which acquires a state quantity of a machine converted from data acquired by a sensor provided in the machine to select two or more learning models according to the acquired state quantity; a composing unit which inputs the state quantity acquired by the selecting unit to each of the two or more learning models selected by the selecting unit to calculate a composed value using a command value output from each of the learning models; and a learning unit which outputs a command value with respect to the machine in a range based on the composed value calculated by the composing unit, acquires a state quantity of the machine, searches for a command value of a specific condition from a combination of the output command value and the acquired state quantity, and outputs the searched command value to the machine, thereby creating a new learning model.

Abstract: An internal combustion machine includes a combustion engine and a cooling system with a coolant pump, a main cooler, a heating heat exchanger, a bypass bypassing the heating heat exchanger, coolant channels, and a regulating device with an actuator for distributing a coolant depending on at least one local coolant temperature. When the actuator is actuated in a given direction, the regulating device allows a coolant flow through the combustion engine and the heating heat exchanger and prevents a coolant flow through the bypass and the main cooler in a first position; additionally allows a coolant flow through the bypass in a second position; and additionally allows a coolant flow through the main cooler in a third position. In a zero position which lies before the first position, the regulating device prevents a coolant flow through the combustion engine and allows a coolant flow through the heating heat exchanger.

Abstract: A start-stop device and a corresponding method brings about an automatic switch-off and/or switch-on operation of an automatically switched-off drive machine of a motor vehicle, in particular of a motor vehicle having an automatic transmission. The start-stop device has a switch-off logic, by way of which an automatic switch-off of the drive machine can be brought about in the case of a moving vehicle in accordance with a predefined switch-off operating strategy, and a switch-on logic, by way of which an automatic switch-on of the automatically switched-off drive machine can be brought about in accordance with a predefined switch-on operating strategy. The switch-off operating strategy and/or the switch-on operating strategy are/is configured in a manner which is based on wheel torque.