Abstract: The present disclosure relates to a gas turbine engine including a turbine wheel mounted for rotation about a central axis and a turbine shroud ring mounted radially outward from the turbine wheel. The turbine wheel includes a plurality of blades that are spaced apart radially from the turbine shroud ring to establish a blade tip clearance gap. The gas turbine engine further includes a blade tip clearance control system that passively controls the size of the clearance gap based on engine operation.

Abstract: A steam valve has a tubular stop valve configured to move toward an upper/lower end side along a direction of an axis when the stop valve is opened/closed; and a valve main body accommodating the stop valve, wherein a base end portion including an end portion of the stop valve at the upper end side is accommodated in a first accommodation space formed in the valve main body, the base end portion has a plurality of inclination surfaces formed on an outer circumference of the base end portion which are inclined such that a distance from the axis to each of the plurality of inclination surfaces decreases toward the upper end side, and a plurality of contact surfaces are formed in the first accommodation space to come in contact with the plurality of inclination surfaces respectively when the stop valve moves toward the upper end side.

Abstract: A drive system of a gas turbine engine includes a first drive shaft and a second drive shaft operable to rotate within the gas turbine engine, a first sensor operable to detect rotation of the first drive shaft, a second sensor operable to detect rotation of the second drive shaft, and a processing system coupled to the first sensor and the second sensor. The processing system is operable to determine a timing variation based on output of the first sensor and output of the second sensor, determine a torsional deflection between the first drive shaft and the second drive shaft based on the timing variation, and detect a health status of the drive system based on the torsional deflection.

Abstract: Aspects of the invention disclosed herein generally provide a heat engine system, a turbopump system, and methods for lubricating a turbopump while generating energy. The systems and methods provide proper lubrication and cooling to turbomachinery components by controlling pressures applied to a thrust bearing in the turbopump. The applied pressure on the thrust bearing may be controlled by a turbopump back-pressure regulator valve adjusted to maintain proper pressures within bearing pockets disposed on two opposing surfaces of the thrust bearing. Pocket pressure ratios, such as a turbine-side pocket pressure ratio (P1) and a pump-side pocket pressure ratio (P2), may be monitored and adjusted by a process control system. In order to prevent damage to the thrust bearing, the systems and methods may utilize advanced control theory of sliding mode, the multi-variables of the pocket pressure ratios P1 and P2, and regulating the bearing fluid to maintain a supercritical state.

Abstract: A turbofan engine includes: a cylindrical fan case; a fan rotatably disposed in the fan case and including a central member and multiple fan blades arranged on an outer circumference of the central member such that the fan blades are spaced apart from one another in a circumferential direction; an annular member disposed to surround the fan; and an elastic support device that supports the annular member to the fan case radially elastically such that a predetermined clearance is radially defined between the annular member and tips of the fan blades.

Abstract: A method of assembling a mid-turbine frame includes engaging at least two tabs in a radially inner end of at least one spoke in a groove in an inner frame case. The at least one spoke is secured to the inner frame case with a central bolt extending through the inner frame case into the at least one spoke.

Abstract: Provided is a center vent tube support device that can prevent transmission of abnormal load between members and prevent abrasion of a contact surface. A device includes: an annular sleeve having an inner surface that comes into contact with an outer surface of a center vent tube; a ring formed of a pair of segments and placed between the sleeve and a main shaft; and an annular nut for fixing the ring to the sleeve. An outer surface of the sleeve or the nut includes a pressurizing surface formed as a conical surface. Each of the ring segments includes a supporting surface formed as a cylindrical surface having a diameter equal to an inner diameter of the main shaft in a portion where the device is to be installed, a bearing surface formed as a conical surface having a vertex angle equal to that of the conical surface forming the pressurizing surface, a pair of side surfaces, and a pair of end faces formed as planes each spaced from a plane including the axis.

Abstract: A system (10) includes a modular exhaust collector (30) configured to be arranged in a first orientation (50) or a second orientation (114, 116). The modular exhaust collector (30) is configured to receive an exhaust flow along an inlet axis (54), to direct the exhaust flow along a first direction (36) through an outlet (58) when in the first orientation (50), and to direct the exhaust flow along a second direction (114, 116) through the outlet (58) when in the second orientation (114, 116). The modular exhaust collector (30) includes an exhaust passage (64) to receive the exhaust flow, a plurality of compressor discharge (CD) ports (72), a plurality of flow ports (76), a bottom face (84) opposite the outlet (58) with a first drain (88), and a first side wall (82) with a second drain (88) between the bottom face (84) and the outlet (58).

Abstract: A steam valve has a tubular stop valve configured to move toward an upper end side and a lower end side along an axial direction when the stop valve is opened and closed respectively; and a valve main body configured to accommodate the stop valve. The stop valve has a ring-shaped protrusion portion protruded outwardly in a radial direction. The valve main body has an accommodation space for accommodating the protrusion portion which is divided by the protrusion portion into a first pressure space and a second pressure space. First and second feed/discharge portions configured for adjusting a pressure in the first pressure space and the second pressure space respectively are further provided. The protrusion portion is moved upwardly and downwardly by adjusting the pressure in the first pressure space and the second pressure space.

Abstract: The present invention relates to a system for eliminating the presence of droplets in a first medium of a heat exchanger. The heat exchanger has an inlet port and an outlet port for the first medium as well as an inlet port and an outlet port for a second medium. The system comprises (a) a device for regulating the flow of the first medium into the heat exchanger, (b) a first temperature sensor array for measuring the temperature of the first medium exiting the heat exchanger, and (c) a controller for regulating flow of the first medium into the heat exchanger. The system further comprises a second temperature sensor array for measuring the temperature of the second medium entering the heat exchanger. The controller regulates the flow of the first medium into the heat exchanger based on data received from the first temperature sensor array and second temperature sensor array.

Abstract: Methods and systems are provided for a valve bridge of an internal combustion engine. In one example, a valve bridge comprises a first arm, a longitudinally opposing second arm, and one or more interior walls forming a passage extending laterally through at least a portion of the valve bridge, the passage disposed between the first arm and second arm and forming a first main opening and an opposing, second main opening. A central support structure is disposed within the passage and is formed by the one or more interior walls.

Abstract: A dual cam phaser for an internal combustion engine, the dual cam phaser including a stator which is drivable by a crankshaft; a rotor which rotatable relative to the stator; a first camshaft; a second camshaft; and a mechanical switching element which is connected to the first camshaft and the second camshaft, wherein the first camshaft and the second camshaft are arranged coaxial with one another, wherein the first camshaft or the second camshaft is connected with the rotor to rotate together with the rotor, and wherein a phase difference between the first camshaft and the second is adjustable by the mechanical switching element.

Abstract: A kit including a cam phaser, including a central valve that is configured to distribute a pressure fluid, and an actuator that controls the central valve, a rotor that is rotatably supported in a stator, wherein the cam phaser is driven or drivable by a dry running traction drive, wherein a pressure fluid distribution chamber that is fillable with the pressure fluid through the central valve is provided between the cam phaser and the actuator, wherein the pressure fluid distribution chamber is connected with an armature chamber of the actuator and sealed towards an ambient, wherein the actuator includes at least one armature that is movable by a coil, a pole core and a pole tube that form a pole tube assembly, and wherein the pressure fluid distribution chamber is sealed by a bonded or friction locking and form locking connection of the actuator with the central valve.

Abstract: A system and method of controlling a cylinder deactivation mechanism can comprise executing a valve lift event configured to lift a valve via a rocker arm. The rocker arm can be configured with a controllable latch in a latched condition, wherein the controllable latch is configured with an edge that is clamped in a recess in the rocker arm during the valve lift event, a clamp force supplied in part by pressure from the valve lift event. A deactivation signal can be sent to select the unlatched condition to collapse the controllable latch from the recess while the controllable latch is configured in the valve lift event with the edge clamped in the recess. A subsequent valve lift event can have actuation deactivated by collapsing the controllable latch from the recess once the valve lift event is complete and the clamp force is removed.

Abstract: A system includes an engine with a plurality of pistons housed in respective ones of a plurality of cylinders, an air intake system provides air to the plurality of cylinders through respective ones of a plurality of intake valves, an exhaust system to release exhaust gas from the plurality of cylinders through one of a plurality of exhaust valves, and a controller coupled to a sensor to control a switching tappet for compression release braking. Alternatively to a tappet, the system includes a roller finger follower controlling an opening and closing timing of exhaust valves, the roller finger follower has an inner roller follower arm adjacent an outer sliding follower, and a controller that in response to an engine braking request locks the inner roller follower arm with the outer sliding follower to contact a second cam lobe and open the exhaust valve during a compression stroke of the cylinder.

Abstract: A crankshaft assembly for a vehicle, a method of operating a crankshaft assembly, and a method of manufacturing a crankshaft assembly. The crankshaft assembly includes a crankshaft, a first pin bearing journal and a main journal, an oil passage having a main passage wall, the oil passage extending from the first pin bearing journal to or through the main bearing journal, a crankpin exit hole located in the main passage wall, and a blocking element positioned in the oil passage, wherein the blocking element is located in a radially outward position with respect to the crankpin exit hole.

Abstract: An oil pan assembly for an engine may include: an oil pan mounted at a lower portion of a cylinder block of the engine and formed with a space therein, in which oil can be stored; and a support bracket mounted at one side of the oil pan for coupling with an air conditioner compressor or a transmission. In particular, a protrusion portion is formed at an upper surface of the support bracket and upwardly protruded.

Abstract: Provided are a reinforced structural body where an internal tension can be sufficiently generated in a reinforcing member against a deformation input to a body member thus allowing the reinforcing member to properly exhibit a reinforcing effect, and a method of manufacturing the reinforced structural body. An oil pan includes a body member made of a resin which has a plurality of fixing portions to be fixed to a counterpart member which is a fixing object, a reinforcing member which is integrally formed with the body member and has higher rigidity than the body member, and a plurality of bushings which have a higher yield stress than the body member and are fixed to the plurality of fixing portions respectively, wherein the reinforcing member extends between the plurality of bushings so as to connect the plurality of bushings.

Abstract: A cylinder head cover that prevents the gas outlet for the blow-by gas from being cooled by structural improvements so that the gas outlet does not freeze or become clogged in a cold condition. A cylinder head cover includes: a gas passage through which blow-by gas from a crankcase passes; and a gas outlet portion protruding upward from a head cover upper wall. The gas outlet portion includes a protruding case portion bulging upward from the head cover upper wall so as to form an outlet passage through which blow-by gas passes, and an air layer is formed outside the outlet passage in the protruding case portion.

Abstract: An engine is provided where oil is minimally blown off through a breather chamber. The breather chamber includes a plurality of breather inlet chambers each having a breather inlet which opens on a bottom wall; an oil separation chamber where blow-by gases flown out from the breather inlet chambers merge together and oil separation is performed; and a breather outlet. A ceiling wall of each breather inlet chamber is lower than a ceiling wall of an oil separation chamber. It is preferable that the respective breather inlet chambers each have: a remote-side chamber portion disposed remote from the oil separation chamber and a near-side chamber portion disposed near to the oil separation chamber. A ceiling wall of the near-side chamber portion is disposed lower than a ceiling wall of the remote-side chamber portion with a stepped portion formed between the ceiling wall and the ceiling wall.

Abstract: A fluid conduit allowing a fluid to flow therethrough is provided, which can increase airtightness by a partition wall without reducing the accuracy of a size or a shape of an orifice provided in the partition wall. A partition wall 10 of a fluid conduit 1 is formed by joining an upper-side partition wall portion 11 and a lower-side partition wall portion 12 by welding. The lower-side partition wall portion 12 includes a joint-side portion 13 and an orifice-side portion (a wall portion 31), and while providing a joint portion 19 to the upper-side partition wall portion 11 in the joint-side portion 13, the orifice 32 is provided in the orifice-side portion, so that the joint portion 19 and the orifice 32 are disposed in a position shifted from each other when viewed from a joint direction.

Abstract: There is provided a breather chamber structure. An inner wall partitions a breather space surrounded by outer walls into a plurality of chambers including a first chamber, a second chamber, and a third chamber. An inlet allows the gas to flow into the first chamber. A first communication path communicates between the first chamber and the second chamber. A second communication path communicates between the second chamber and the third chamber. An outlet allows the gas in the third chamber to flow out of the breather space. An oil discharge port is configured to return oil separated from gas in the breather space to an oil reservoir. The third chamber has a volume equal to or greater than half of a volume of the breather space. The first chamber has a volume larger than a volume of any of the chambers except for the first and third chambers.

Abstract: The exhaust gas post-processing device includes: an exhaust gas post-processing unit into which an exhaust gas is introduced; a drain pipe connected to a lower portion of the exhaust gas post-processing unit; and a junction member. The junction member includes an introduction flow path, one end of which is an introduction port connected to the drain pipe, the introduction flow path extending in a horizontal direction from the introduction port, and the other end of the introduction flow path being an introduction-side gas vent hole opened to an outside. A discharge flow path is connected to a lower portion of the introduction flow path, that extends, in the horizontal direction, in a direction intersecting the introduction flow path, and an end portion of the discharge flow path being a discharge port opened to the outside. The exhaust gas post-processing device further includes a drainage pipe connected to the discharge port.

Abstract: The invention relates to an exhaust gas aftertreatment system for an internal combustion engine comprising a first catalytic converter that has a first exhaust gas inlet to admit the exhaust gas into the first catalytic converter and has an exhaust gas outlet positioned on the opposite side, also comprising a second catalytic converter that is arranged downstream from the first catalytic converter and that is flow-connected to the first catalytic converter in order to allow the exhaust gas to pass from the first catalytic converter into the second catalytic converter and that likewise has a second exhaust gas inlet that is at a physical distance from the exhaust gas outlet of the first catalytic converter. The exhaust gas aftertreatment system also comprises a particulate filter that is arranged downstream from the second catalytic converter and that is flow-connected to the second catalytic converter in order to allow the exhaust gas to pass from the second catalytic converter into the particulate filter.

Abstract: A NOx adsorber catalyst and its use in an emission treatment system for internal combustion engines, is disclosed. The NOx adsorber catalyst comprises a first layer consisting essentially of a support material, one or more platinum group metals disposed on the support material, and a NOx storage material.

Abstract: Disclosed is a method for adapting control of a reducing agent dosing unit in a reducing agent provision system for emission control of a combustion engine. Characteristics relating to pressure variations associated with a dosing cycle are used for determining a first time period and a second time period. The time periods relate to a delay between activation of dosing and de-activation of dosing, respectively. The first time period and second time period are used for adapting operation of said reducing agent dosing unit.

Abstract: A method for controlling a fill level of an exhaust gas component store of a catalytic converter of an internal combustion engine, in which the fill level is controlled by using a system model, which includes a catalytic converter model, and uncertainties of measurement or model variables, which influence the control of the fill level, being corrected by an adaptation that is based on signals of an exhaust-gas probe situated on the output side of the catalytic converter. The method provides that an adaptation requirement is learned as a function of the operating point, the learned adaptation requirement is stored as a function of the operating point, and a distinction is made based on the operating point dependency between different causes of the uncertainties. Also described is a control unit to carry out the method.

Abstract: The present invention relates to a method for analysing the operation of an anti-pollution system for a motor vehicle (1) with an internal combustion engine, said vehicle (1) comprising at least one sensor for measuring (110) a parameter of the vehicle (1) and an analysis computation means (140) directly connected to said measuring sensor (110), said analysis computation means (140) comprising a memory area, said method being characterised in that it comprises a step for using the measuring sensor (110) to measure at least one parameter of the vehicle (1), a step for using the measuring sensor (110) to transmit at least one digital datum representative of the measured value of the parameter to the analysis computation means (140) and a step for using the analysis computation means (140) to compare said digital datum with a predetermined range of values representative of an operation of the anti-pollution system according to a predetermined standard.

Abstract: Systems and methods are provided for an engine system having a split exhaust system. In one example, a system may include an engine having a plurality of cylinders, each of the plurality of cylinders including first and second exhaust ports, the first and second exhaust ports arranged in a non-alternating pattern across the plurality of cylinders and along a cylinder head, a blowdown exhaust manifold coupled to the first exhaust ports and an exhaust passage, and a scavenge exhaust manifold coupled to the second exhaust ports and an intake passage of the engine. In this way, the first and second exhaust ports may be arranged to enhance turbocharger performance characteristics.

Abstract: A machine comprises a tool for pre-positioning of a body of an exhaust component and a fitting tool having a passage converging from a large opening to a small opening. An actuator device is configured to push the body along a main axis of the machine toward a cover of the exhaust component through the converging passage.

Abstract: A fluid circuit for a trucking vehicle having a transport refrigeration unit is provided. The fluid circuit includes a first regulator assembly defining a first fuel inlet that is arranged to receive fuel from a first fuel tank and a first fuel outlet that is arranged to provide fuel to a first engine. The first regulator assembly having a first heat exchanger assembly defining a first coolant inlet that is arranged to receive coolant from a cooling system associated with the first engine and a first coolant outlet that is arranged to provide coolant to the cooling system.

Abstract: A safety cap (10), for a motor vehicle fluid reservoir (14), is configured to be attached and fixed to a neck (12) of the reservoir. The cap includes a screwing cover (16) with a first screw thread (16ba), and a safety cell (18) configured to allow passage of gas between the interior and the exterior of the reservoir, when the cap is fixed to the neck and when a pressure difference between the interior and the exterior of the reservoir is greater or less than at least one predetermined threshold value. The cap includes a ring (20) with structure (30, 30a, 32) for fixing to the neck and a second screw thread (22) to cooperate with the first screw thread. The cell is at least partly housed in the neck and surrounded by the cover and/or the ring when the cap is fixed on the neck.

Abstract: A system and a method for cooling a prime mover and lube oil, comprising: a prime mover configured to drive a pump with a motor shaft; a prime mover cooling assembly that encases the prime mover, wherein the prime mover cooling assembly comprises: an air intake and an exhaust ventilator mounted above the prime mover; and a lube oil cooling assembly mounted above the prime mover, wherein the lube oil cooling assembly cools lube oil circulating within the pump and is mounted above the prime mover such that the lube oil cooling assembly does not hang off one or more sides of the prime mover and prime mover cooling assembly.

Abstract: A generator set is disclosed. The generator set may include a liquid-cooled engine and an alternating current (AC) generator coupled to the liquid-cooled engine. The generator set may include an AC fan associated with the liquid-cooled engine and connected to the AC generator via a relay and an engine control module (ECM) associated with the liquid-cooled engine and connected to the AC fan via the relay. The generator set may include an engine temperature sensor associated with the liquid-cooled engine and connected to the ECM via a first circuit and an engine air temperature sensor associated with the liquid-cooled engine and connected to the ECM via a second circuit.

Abstract: An intake-air temperature controlling device is provided, which includes an engine body, an intake passage, a supercharger, a first passage, a second passage, an intake air flow rate adjuster, an intercooler, a pump, and a controller. The controller outputs a control signal to the pump so that coolant is supplied to the intercooler in a first operating range in which the intake air flow rate adjuster at least partially opens the first passage to supply intake air boosted by the supercharger to the engine body, and outputs a control signal to the pump so that the coolant is supplied to the intercooler also in a second operating range in which an engine load is below a given load, and the intake air flow rate adjuster opens the second passage and closes the first passage to supply the intake air to the engine body in a non-boosted state.

Abstract: A compressor for an internal combustion engine supercharging device is disclosed, having a compressor housing in which a compressor wheel is arranged on a rotor shaft; and an air-feed channel for conducting an air flow to the compressor wheel. The compressor has a throttle module, having an iris diaphragm mechanism arranged upstream of the compressor wheel, multiple lamellae and which closes or opens a diaphragm aperture by the lamellae, allowing variable adjustment of a cross-section for the air flow to the compressor wheel. A throttle module housing at least partially delimits the air-feed channel and in and/or on which the iris diaphragm mechanism is mounted. An actuator is mounted on the throttle module housing and mechanically coupled to the iris diaphragm mechanism for actuation thereof. The throttle module is formed as a structural unit separate from the compressor housing and flange-mounted on the compressor housing by the throttle module housing.

Abstract: A motorised fluid metering valve includes an inlet pipe, a discharge pipe and a motor moving a piston that can move linearly between a closed position in which a distal end of the piston sealingly engages with a seat of matching shape, and an open position. The valve is configured to have a flow rate that varies continuously between the closed position and the open position depending on an axial position of the piston. The inlet pipe opens in a periphery of the discharge pipe, with a constant protuberance regardless of the position of the piston, the protuberance not extending radially beyond a barycentre of the discharge pipe. Also, the motor is a rotary electric motor moving the piston in translation.

Abstract: A compressor for a charging device of an internal combustion engine has a compressor impeller arranged for conjoint rotation on a rotor shaft. An air supply channel conducts an air mass flow to the compressor impeller. An iris diaphragm mechanism is upstream of the compressor impeller and has multiple lamellae to close or to open a diaphragm aperture to vary a flow cross section for the air mass flow for flow against the compressor impeller. A housing at least partially delimits the air supply channel. The iris diaphragm mechanism is located in the housing. An actuator is mechanically coupled to the iris diaphragm mechanism via an opening in the housing for the purpose of actuating the iris diaphragm mechanism, wherein the actuator is arranged on the housing such that the opening is closed off by the actuator.

Abstract: A turbocharger for a machine is disclosed. The turbocharger may comprise a turbine section including a turbine housing and a turbine wheel, a compressor section including a compressor housing and a compressor wheel with a plurality of blades, and a shaft rotatably coupling the turbine wheel and the compressor wheel. The turbocharger may further comprise a health sensor mounted to the compressor housing and including a plurality of wire loops. The plurality of wire loops may be consecutively broken upon impact with the blades of the compressor wheel or a structure assembled on the compressor wheel as the turbocharger wears over time. The health monitor may be configured to detect a number of wire loops broken by impact with the blades of the compressor wheel or the structure, and the number of wire loops broken may indicate a wear condition of the turbocharger.

Abstract: The power generator comprises an engine, an alternator to be driven by the engine, and shrouds that cover at least a part of the engine, and each of the shrouds is formed of a shroud main body member and a sound absorbing member.

Abstract: A component for exposure to a combustion chamber of a diesel engine and/or exhaust gas, such as a cylinder liner or valve face, is provided. The component includes a thermal barrier coating applied to a body portion formed of steel. A layer of a metal bond material can be applied first, followed by a mixture of the metal bond material and a ceramic material, optionally followed by a layer of the ceramic material. The ceramic material preferably includes at least one of ceria, ceria stabilized zirconia, yttria stabilized zirconia, calcia stabilized zirconia, magnesia stabilized zirconia, and zirconia stabilized by another oxide. The thermal barrier coating is applied by thermal spray or HVOF. The thermal barrier coating has a porosity of 2% by vol. to 25% vol., a thickness of less than 1 mm, and a thermal conductivity of less than 1.00 W/m·K.

Abstract: A method for exhaust waste energy recovery at the internal combustion engine polygeneration plant with the gas engine or gas turbine prime movers which includes supplying this plant with any on-site available methaneous gas, converting from 20 to 30% of supplied gas into electric or mechanical power and producing a liquefied methaneous gas (LMG) co-product from the other 80-70% of supplied gas, and thereby obviates a need for any specialized refrigeration equipment, refrigerants and fuel for LMG co-production at a rate of 0.4-0.9 ton/h for each MW of engine output and makes possible to further increase the LMG co-production rate at the sacrifice of a fuel self-consumption minimized down to 1-2% of the amount of gas intended for liquefaction.

Abstract: The upstream-side wall portion 54 includes, in the circumferential direction thereof, a first region 31 where air inlets 30 are formed at a lower density, and a second region 32 which is disposed at a position offset from the first region 31 in the circumferential direction, and in which the air inlets 30 are formed at a higher density than in the first region 31.

Abstract: A method of cooling a gas turbine engine case assembly includes moving a fan air valve that is operatively connected to a pre-cooler having a bypass inlet that is configured to receive bypass air that bypasses a gas turbine engine core to facilitate a provision of bypass air through a fan air valve inlet to the bypass inlet to a first open position, in response to a core compartment temperature being greater than a target core compartment temperature. The method further includes bleeding the bypass air through a bypass outlet of the pre-cooler into a core compartment.

Abstract: A ring gear (114) for an epicyclic or planetary reduction gear (110) of a turbomachine, in particular of an aircraft, said ring gear extending about an axis and comprising first and second coaxial annular elements (114a, 114b) and comprising, respectively, two inner annular toothing sets (150) of different orientation, said first and second annular elements further comprising, respectively, first and second radially outer annular flanges (114ab, 114bb) for attaching said first and second elements to each other, characterised in that one of said first and second flanges comprises, at its outer periphery, a cylindrical centring rim (164) configured to cooperate with the outer periphery of the other of said first and second flanges.

Abstract: A method for monitoring a cylinder pressure sensor, in which method the sensor value is checked for admissibility and inadmissibility in a predefinable crankshaft angle range, when admissibility is detected the cylinder pressure sensor is used further and when inadmissibility is detected the cylinder pressure sensor is deactivated. A first sensor value of the cylinder pressure sensor is set as a start value, and a second sensor value is set as a stop value, a plateau range is determined from the number of sampling steps between the start value and the stop value, and the plateau range is set as decisive for the admissibility or inadmissibility of the sensor values.

Abstract: An intake-air temperature controlling device for an engine is provided, which includes an engine body, an intake passage, an air intake part, an intake air temperature adjuster configured to adjust air temperature taken in through the air intake part to the passage, and a controller. An operating range in which the CI combustion is performed has a lean operating range in which A/F of mixture gas formed inside the cylinder, or G/F that is a relationship between the total weight G of gas inside the cylinder and a weight F of fuel fed to the cylinder is relatively low, and a rich operating range in which the A/F or G/F is relatively high. When the engine is in the lean operating range, the controller outputs a control signal to the intake air temperature adjuster so that the air temperature is increased, as compared in the rich operating range.

Abstract: An evaporated fuel processing device may be provided with a canister configured to adsorb evaporated fuel evaporated in a fuel tank; a purge passage through which purge gas sent from the canister to the engine passes; a pump configured to send the purge gas from the canister to the intake passage; a control valve configured to switch between a communication state communicating the canister and the intake passage and a cutoff state cutting off the canister from the intake passage; a branch passage including one end connected to the purge passage on a downstream side relative to the pump and other end connected on an upstream side relative to the pump; and a concentration detector provided on the branch passage.

Abstract: Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation to an intake passage via a first exhaust manifold and exhaust gas to an exhaust passage via a second exhaust manifold. In one example, each of a first valve positioned in an exhaust gas recirculation (EGR) passage, the EGR passage coupled between the intake passage and the first exhaust manifold coupled to a first set of cylinder exhaust valves, and a second valve positioned in a flow passage coupled between the first exhaust manifold and the exhaust passage may be adjusted based on a measured pressure in the first exhaust manifold.

Abstract: A compression ignition engine with a supercharger is provided, which includes one or more valves configured to switch a state between a first state where intake air is boosted by the supercharger and a second state where it is not boosted, a fluid temperature adjuster configured to adjust a temperature of engine coolant to be supplied to a radiator from an engine body, and a controller. When the engine operates in a high-load range, the controller controls the combustion mode to be in a compression ignition combustion mode, and causes the valve(s) to be in the first state, and in a low-load range, the controller causes the valve(s) to be in the second state. In the high-load range, the controller outputs a control signal to the fluid temperature adjuster so that a target temperature of the engine coolant is lowered than that in the low-load range.