Abstract: A turbine engine component includes an internal baffle spaced between first and second walls. Each wall may have a plurality of cooling holes in fluid communication with respective upstream and downstream cooling paths defined between the baffle and the respective walls. Cooling air first flows through an upstream end portion of the upstream cooling path, then through a downstream end portion where the air enters a bleed aperture in the baffle. From the bleed aperture, a portion of or all of the cooling air may enter an internal cavity defined by the baffle and, from there, flows through at least one hole that may be a plurality of impingement holes in the baffle, and into the downstream cooling passage where the portion or all of the remaining cooling air may exit the component through the cooling holes in the second wall.

Abstract: Apparatus for housing a rotatable component and exchanging heat and methods for manufacturing the same are disclosed. The apparatus includes a first casing and a second casing spaced apart from the first casing and defining a gap therebetween. The apparatus also includes a cooling fluid manifold coupled to a source of a cooling fluid, and a stack of plates coupled to the first and second casings and extending therebetween to fill the gap. The first and second casings and the stack of plates define at least a portion of a pressurized containment area therein. Further, the stack of plates includes a bore in which the rotatable component is received and defines process fluid flowpaths configured to direct process fluid to and/or from the rotatable component. The stack of plates is in fluid communication with the cooling fluid manifold and transfers heat from the process fluid to the cooling fluid.

Abstract: The invention concerns a gas turbine engine component (37) comprising an outer ring structure (10), an inner ring structure (20) and a plurality of circumferentially spaced radial elements (15) for transferring loads between the inner ring structure (20) and the outer ring structure (10), wherein the outer ring structure (10) comprises a circular ring member (11) for withstanding an internal pressure during operation of the gas turbine engine. The invention is characterized in that the outer ring structure (10) comprises a first set of circumferentially distributed and substantially straight reinforcement ribs (16) for achieving radial stiffness, wherein the reinforcement ribs (16) form sides in a polygonal shape and wherein each of said reinforcement ribs (16) extends between two adjacent radial elements (15). The invention also concerns a gas turbine engine (1) comprising a component (37) of the above type.

Abstract: A foil bearing includes: a tubular foil holder (31); and a plurality of foils (32) having a radial bearing surface (S1) and being arrayed on an inner peripheral surface (31a) of the foil holder (31) in a circumferential direction. Both circumferential ends (projecting portions (32e) and projecting portion (32c)) of each of the foils (32) are held on the foil holder (31). The foil bearing is configured to support a shaft (6) inserted along an inner periphery thereof in a freely rotatable manner. The plurality of foils (32) are held on the foil holder (31) under a circumferentially movable state.

Abstract: A turbomachine assembly including first and second bodies, in which one of the bodies is rotating relative to the other body around the axis of rotation of the turbomachine, is provided. A tight zone is formed between the bodies and includes a sealing gasket. A flowing fluid, in particular lubricant oil, is able to circulate inside the first and second bodies and to be driven toward the one rotating body from the other body. The one rotating body includes a device for guiding the rotation, in the direction of rotation of the one rotating body, of the flow of fluid inside the one rotating body so as to drive the flowing fluid away from the tight zone.

Abstract: A gas turbine, including: axially adjacent first and second components each having a gas path facing surface within an engine casing, inter-component cavity located between first and second components on the gas path outboard side, an axial-restrictor within the inter component cavity for restricting movement of the first or second component relative to at least one other first and second component or engine casing, wherein the axial-restrictor is radially located in the engine casing or other first and second component and includes a radially facing surface; a retaining element, including a body having circumferential length extending around the gas turbine engine and axial length extending between axially adjacent first and second components when in use; an obstructing portion between the radially facing surface of the axial-restrictor and opposing second radial surface of the other first or second component or engine casing to restrict radial movement of in use axial-restrictor.

Abstract: Apparatus for mounting a component in a gas turbine engine, the apparatus comprising: a casing for a gas turbine engine, the casing including a flange; a first connector to connect a component of the gas turbine engine to the casing at a first location adjacent to the flange; and a second connector to connect the component of the gas turbine engine to the casing at a second location adjacent to the flange.

Abstract: A combined cycle power plant for frequent stops and startups comprises at least one gas turbine, a heat recovery steam generator, at least one steam turbine and a thermal energy storage and retrieval system utilizing latent heat of fusion. Phase change materials receive thermal charge from two sources: (a) renewable energy generation plants, when their production exceeds demand and (b) gas turbine exhaust heat. The thermal energy storage and retrieval system, discharges efficiently thermal energy for steam production, which keeps the at least one steam turbine preheated and ready for fast startups, thus increasing the plant's flexibility and efficiency. A novel two stage latent thermal energy storage system provides at least supercritical steam.

Abstract: A method for controlling a temperature of steam for a steam power plant is provided. A state regulator controls the temperature of the steam at an outlet of a superheater using a feedback of multiple medium states of the steam in the superheater. An aim herein is to achieve a stable and precise control of the steam temperature. This is achieved in that the state regulator is a linear regulator, the feedback matrix of which is ascertained such that the regulator has the control quality of a linear-quadratic regulator.

Abstract: An exhaust heat recovery system may a condenser having a working fluid introduced thereinto and recovering heat of the introduced working fluid, the introduced working fluid receiving heat of exhaust gas through a heat exchanger provided in an exhaust pipe, and a reservoir receiving the working fluid from the condenser, wherein the condenser and the reservoir are provided with a coolant channel through which a coolant for cooling the working fluid flows.

Abstract: A method for monitoring an actuator device of a reciprocating piston engine, wherein the actuator device is designed to actuate, particularly reversibly displace, a sliding cam device of the reciprocating piston engine, particularly substantially parallel to a camshaft of the reciprocating piston engine, with the steps S1 Feeding of actuation energy to the actuator device, whereupon the actuator device undergoes a first state change, S2 Monitoring of the actuator device and detection of a second state change of the actuator device, S3 Determining of a first angle of rotation ? of a camshaft or of the camshaft of the reciprocating piston engine on the basis of the second state change.

Abstract: A structural oil pan for a vehicle is formed from polymeric material, The structural oil pan includes a bracket portion configured for mounting to the vehicle, and a pan portion integrated with the bracket portion and defining an oil reservoir. The structural oil pan also includes a structural section defining a cavity within at least one of the bracket portion and the pan portion for reducing vibration.

Abstract: A fluid filter apparatus comprising an upper housing shell; a lower housing shell; a pleat pack element comprising a peripheral frame and a folded pleated media. The frame is at least partially molded over the media to secure the media in the frame, and the media comprises two or more types of media of different densities from each other. A flow control element is disposed for changing the proportion of flow between the first media and the second media responsive to changes in at least one of temperature, pressure, flow rate and/or viscosity of the fluid.

Abstract: A positive crankcase ventilation gas diversion and reclamation system comprises a positive crankcase ventilation gas diversion line to divert oil laden positive crankcase ventilation gases from the air intake manifold of an internal combustion engine. A positive crankcase ventilation gas diversion line directs oil laden positive crankcase ventilation gases into a vapor headspace of a fuel tank. A pressure sensor measures a vapor pressure in a vapor headspace of a fuel tank, and a fuel tank vent valve is operative with a fuel tank vent line. A controller actuates the fuel tank vent valve into an open position and discharges fuel enriched vapor to the air intake manifold of the internal combustion engine. A method permits diverting positive crankcase ventilation gasses from the air intake manifold of an engine, and reclaiming oil laden fuel components and/or particulates from positive crankcase ventilation gasses.

Abstract: An apparatus for regenerating a diesel particular matter filter includes an outdoor temperature sensor for detecting an outdoor temperature, a water temperature sensor for detecting a cooling water temperature of an engine, an air heater for heating intake air of the engine, a relay temperature sensor for detecting a heater relay temperature, a controller for generating and outputting a signal for controlling a heater relay to activate or deactivate the air heater and a signal for controlling a cooling fan to be operated based on detection values input from the outdoor temperature sensor, the water temperature sensor and the relay temperature sensor, a heater relay configured to be turned on and off depending on the control signal output from the controller to operate or stop the air heater, and a cooling fan configured to be selectively operated depending on the control signal output from the controller and ventilate air for cooling the heater relay upon the operation.

Abstract: A fluid sensor for sensing at least one characteristic of a fluid. The fluid sensor including a sensing area; a sensing element configured to sense a characteristic of a fluid located within the sensing area; and a shroud having a textured area. The shroud configured to allow a liquid portion of the fluid to enter and exit the sensing area, and substantially prohibit a gas portion of the fluid to enter the sensing area.

Abstract: An exhaust gas treatment system for an internal combustion engine includes an exhaust gas pathway configured to receive exhaust gas from the internal combustion engine, a first ammonia injector configured to inject ammonia into the exhaust gas pathway at a first rate, and a first treatment element positioned downstream of the first ammonia injector. A second ammonia injector is positioned downstream of the first treatment element. The second ammonia injector is configured to inject ammonia into the exhaust gas pathway at a second rate. A controller is configured to estimate an amount of particulate present in the exhaust gas and adjust at least one of the first rate or the second rate based on the estimate.

Abstract: An exhaust device of an engine, with an exhaust path to lead exhaust gas discharged from the engine to outside, the exhaust device comprising: an exhaust heat collector being configured to collect heat from the exhaust gas, and a cooling part being configured to cool down the exhaust heat collecting part from an outer peripheral side via a cooling fluid; and an exhaust gas flow controlling member in a cylindrical shape, comprising an inlet part and an outlet part where the inflow of the exhaust gas is discharged to an upstream side of the exhaust heat collecting part. An opening diameter of the outlet part is arranged to be smaller than an outer diameter of the exhaust heat collecting part. The exhaust gas flow controlling member is placed so that an open end of the outlet part opposes a central portion of an upstream end plane of the exhaust heat collecting part. The open end of the outlet part and the upstream end plane of the exhaust heat collecting part are a predetermined distance apart.

Abstract: An exhaust gas aftertreatment device for an internal combustion engine comprises a housing, first and second catalytic substrates arranged inside the housing such that the first catalytic substrate is arranged upstream of the second catalytic substrate, and a reductant injector arranged in between the first and second catalytic substrates. Further, the first and second catalytic substrates are arranged such that a fluid flow direction through the exhaust gas aftertreatment device is angled. A flow redirecting wall is arranged downstream of the first catalytic substrate such that the fluid flow between the first and second catalytic substrates at least partially passes an outer circumference of the first catalytic substrate before reaching the second catalytic substrate. The redirecting wall is inclined to an outlet surface of the first catalytic substrate and the reductant injector is arranged at the redirecting wall at a position distant from the outlet surface.

Abstract: A dual mixer for mixing a reducing agent with exhaust gas in a mixing section of a selective catalytic reduction (SCR) aftertreatment system is disclosed. The dual mixer may comprise a first mixer including a grid and a plurality of trapezoidal fins projecting from the grid in a direction of flow of the exhaust gas. The dual mixer may further comprise a swirl mixer positioned downstream of the first mixer and separated therefrom by a distance. The swirl mixer may include a base and three arrays of swirl fins projecting from the base in the direction of flow of the exhaust gas. The swirl fins in each of the arrays may be oriented in a common direction that is rotated by about 60° from the common direction of the swirl fins in an adjacent array.

Abstract: This reservoir assembly includes a reservoir, a liquid supply module of a downstream pipe, and a level sensor. The bottom has a first protruding portion, for housing the supply module, and a second protruding portion for defining a passage housing the downstream pipe. The level sensor is located in the housing. The bottom further has an upper area and a lower area adjacent to the housing. The upper area is defined by a top portion of the passage. The lower area is located lower than the upper area. The level sensor is in the housing at the same altitude as the lower area.

Abstract: Methods for monitoring the performance of an oxidizing catalyst device are provided. Methods can include treating an exhaust gas stream with the oxidizing catalyst device, determining a reference liberated oxygen (LO) species measurement of the exhaust gas stream, measuring a downstream LO species measurement of the exhaust gas stream using a NOx sensor in a catalyst inactive mode, and determining a LO species differential. The downstream NOx sensor can comprise an amperometric sensor and include a NO2 selective reduction catalyst. Methods for using an amperometric NOx sensor utilizing an NO2 selective reduction catalyst are also provided, and include operating the NOx sensor in a catalyst active mode to generate a first LO species measurement, operating the NOx sensor in a catalyst inactive mode to generate a second LO species measurement, and comparing the first LO species measurement to the second LO species measurement to determine a LO species differential.

Abstract: An engine includes an exhaust sensor projecting from an opening in an inner surface of a first exhaust pipe to inside of an exhaust passage, and a projection provided in the inner surface of the first exhaust pipe along the opening, and positioned farther inside the exhaust passage than the opening, wherein at least a portion of the projection is positioned upstream of the opening in a flow direction of exhaust gases.

Abstract: A device and method for cooling an air cooled motorcycle engine. A fan and a cover acting as a duct directs engine heat forward away from a rider when the motorcycle engine is hot and the motorcycle is stopped. When the motorcycle is in motion the fan is switched off and the passing air takes a reversed path and flows rearward over the engine fins cooling the engine.

Abstract: A cooling system includes a rear radiator that is mounted in a vehicle and circulates cooling water to release heat of the cooling water. A fan that generates cooling air to cool the rear radiator, and a shroud is provided between the fan and the rear radiator and guides the cooling air. The shroud has a double structure having an internal space; the internal space enables the cooling water to pass through the internal space when the cooling water circulates.

Abstract: The present disclosure relates to a method for determining an actuating value for a coolant pump or a control valve of a cooling system for an infernal combustion engine of a motor vehicle. In particular, a pre-control value for ascertaining the actuating value is determined in a first determination mode based on a prescribed first allocation as a function of an output variable of the infernal combustion engine and a temperature difference of a heat exchanger of the cooling system.

Abstract: A cooling system of an internal combustion engine includes a first flow passage supplying a cooling medium of the internal combustion engine to a radiator, a second flow passage branching from the first flow passage by a flow control valve to supply the cooling medium to a first heat exchanging portion, a third flow passage provided separately from the first flow passage to supply the cooling medium to a second heat exchanging portion via an on-off valve and a control portion controlling the on-off valve and the flow control valve based on a temperature of the cooling medium.

Abstract: Methods and systems are provided for maintaining a desired engine coolant level and a relative glycol amount in the engine coolant by using water sourced from on-board vehicle systems. In one example, a method may include supplying water to the engine coolant reservoir in response to the engine coolant level decreasing below a threshold. Also, a relative glycol amount in the coolant may be maintained at a threshold amount by adding water to the coolant in response to a relative glycol increasing above the threshold.

Abstract: Injection of the fuel by the injector 43 creates a gas flow in the combustion chamber. The gas expands in a radial fashion from an axis of a cylinder toward a radial outside of the cylinder, and then flows from the radial outside along the cylinder head bottom face 221 toward the axis of the cylinder. The spark plug 41 has a gap positioned away from the axis of the cylinder toward the radial outside of the cylinder at a predetermined distance, and placed radially inwardly from a position opposite a rim of an opening of the cavity 242. A side electrode extends to be oriented in a direction perpendicular to the flow of the gas along the cylinder head bottom face. The gap has a center positioned near the cylinder head bottom face, and closer to an interior of a combustion chamber than to the cylinder head bottom face.

Abstract: An air-guiding component for a charged internal combustion engine has an intercooler provided with coolant connectors that is disposed in a housing of the air-guiding component. The housing has at least two housing parts including a basic housing part. The housing is provided with at least one inlet and at least one outlet for charge air and is further provided with at least one passage for the coolant connectors of the intercooler. The intercooler is arranged between the at least one inlet and the at least one outlet so as to be flowed through by the charge air. The housing has housing walls and at least one of the housing walls has at least one corrugation.

Abstract: A system for recovering thermal energy from one or more devices of an engine is provided to increase the overall efficiency of the engine. The system comprises an exhaust turbocharger, which is in fluid communication with the engine and driven by a supply of exhaust gas from the engine. The driven exhaust turbocharger is configured to supply compressed air to the engine. A boiler is provided to transfer heat from the exhaust gas to a heat-transfer fluid to generate a heat-transfer vapor. The vapor operates to drive a vapor turbocharger to supply additional compressed air to the engine. The vapor is further used to absorb heat from a coolant fluid used in an engine cooling system before a vapor compressor compresses the vapor back to a semi-saturated state and returns it to the boiler to complete a vapor cycle. A method for implementing the above-mentioned system is also provided.

Abstract: Methods are provided for identifying degradation in components of a compressor recirculation valve (CRV). One method includes differentiating between degradation of a throttle of the CRV and a position sensor of the CRV based on each of a throttle inlet pressure and commanded position of the throttle of the CRV. The method also includes utilizing output from the position sensor of the CRV in response to the commanded position of the throttle of the CRV.

Abstract: An assembly for a two-stage turbocharger can include a first turbocharger stage and a second turbocharger stage where one of the stages includes a boss that includes a bore; an exhaust bypass valve that includes an arm pivotable to orient the exhaust bypass valve in an open state and a closed state; a valve shaft disposed at least in part in the bore and operatively coupled to the exhaust bypass valve where the valve shaft includes an inner end, an outer end and an axial stop disposed between the inner end and the outer end; an outer bushing disposed at least in part in the bore and located axially along the valve shaft; and an inner bushing disposed at least in part in the bore and located axially along the valve shaft between the axial stop and a portion of the arm of the exhaust bypass valve.

Abstract: A supercharger-equipped combustion engine includes a crankshaft extending in a widthwise direction of a vehicle supported by a crankcase and a supercharger disposed above the crankcase. Power from the crankshaft is transmitted through a supercharger transmission to the supercharger. A crankcase body has an opening formed to be opened at the right side in the widthwise direction, and at least a part of the opening is covered with a holder detachably mounted on the crankcase body. The supercharger transmission includes input and output shafts extending in the widthwise direction of the vehicle, and the input and output shafts are rotatably supported at first end portions thereof at the right side by first bearing portions formed in the holder and are rotatably supported at second end portions thereof at the left side by second bearing portions formed in a side wall of the crankcase body.

Abstract: A supercharger includes: an impeller that pressurizes intake air for a combustion engine; a supercharger rotation shaft to which the impeller is fixed; and a supercharger case rotatably supporting the supercharger rotation shaft. A supercharger lubricating fluid passage that guides a lubricating fluid to a bearing housing is formed inside the supercharger case, and an oil filter that removes foreign matter from the lubricating fluid is disposed in the supercharger lubricating fluid passage. The oil filter is detachably mounted on the supercharger case by an operation from the outside of the supercharger.

Abstract: An apparatus including a reciprocating internal combustion engine with at least one piston and cylinder set and an intake stream; at least one liquid atomizer in fluid communication with the intake stream operable to provide a plurality of liquid droplets with a diameter less than 5 ?m to the intake stream; and a controller where the controller is able to adjust an index of compression for the engine by: calculating a wet compression level in response to an engine operating limit and adjusting the at least one liquid atomizer in response to the wet compression level.

Abstract: A rotary internal combustion engine includes a cylinder seat and a power wheel. The cylinder seat has a circular cylinder, at least one first explosion chamber disposed on a cylinder wall, and an ignition system, a fuel supply system, a compression assembly, an exhaust and an intake installed thereon for each respective first explosion chamber. The power wheel is slidably coupled to the circular cylinder, and has at least one compression chamber and a second explosion chamber disposed adjacent thereto and when rotated provides connection to the first explosion chamber. As a result of rotation of the power wheel, air and fuel gas are compressed in the compression chamber, collected into the first and second explosion chambers, and then ignited by the ignition system to produce a high explosive yield, so that the power wheel is rotated constantly in a single direction to provide high-efficiency kinetic energy.

Abstract: The invention relates to an internal combustion engine (1) having a settable variable compression ratio and having a connecting rod (3), which connecting rod has an adjustment mechanism (4) for the adjustment of the settable variable compression ratio, a first hydraulic line (5), a second hydraulic line (6), a hydraulic outflow duct (47) and a switching module (21) for the switching of the adjustment mechanism (4), wherein the switching module (21) is arranged on the connecting rod (3) and a first position of the switching module (21) corresponds to a first compression ratio and a second position of the switching module (21) corresponds to a second compression ratio that differs from the first compression ratio, wherein the switching module (21) has a switching element (22) and a sleeve (23) surrounding the switching element (22), wherein the switching element (22) and the sleeve (23) are movable relative to one another, and the switching element (22) has a recess (36) and an edge region (37) bordering the re

Abstract: An engine includes a V-shaped cylinder body, first and second exhaust manifolds inside a V-shaped line, and an exhaust pipe. The exhaust pipe includes a first upstream end portion into which exhaust gases discharged from first cylinders to the first exhaust manifold flow, and a second upstream end portion into which exhaust gases discharged from second cylinders to the second exhaust manifold flow. A spiral wound gasket seals a gap between the first exhaust manifold and the first upstream end portion.

Abstract: An internal combustion engine using a two stroke cycle includes a pair of opposing cylinder units, each of which are located on opposing sides of a crankcase. In each cylinder unit is a cylinder with a piston disposed in the cylinder. Each piston is coupled to a piston rod that is aligned along an axis that passes through the center of each cylinder bore. The piston rods pass through the crankcase wall into the crankcase chamber, and are further coupled to a yoke. Each cylinder unit has an intake channel from the crankcase chamber to a cylinder intake port in the cylinder. As the piston traverses its upstroke in its cylinder, it creates a vacuum under the piston. At the top of its stroke a piston intake port becomes aligned with the cylinder intake port, allow fuel to be drawn into the cylinder under the piston. As a result, a continuous vacuum is experienced in the crankcase without the need for mechanical valving arrangements.

Abstract: A turbojet comprising a low-pressure compressor, a high-pressure compressor and a bleeding system configured to bleed air in the turbojet and to deliver the air to an air system. The bleeding system comprises a first air intake configured to bleed air at low pressure, a second air intake configured to bleed air at high pressure, a first valve and a second valve having inlets connected to the first air intake, a compressor having an inlet connected to an outlet of the second valve, a high-pressure valve connected to the second air intake, a control valve connected to the air system, and a controller to control opening and closing of the valves depending on a pressure at the first air intake.

Abstract: An engine and particle decelerator is provided herein. The engine having: an inlet opening for directing air towards a compressor of the engine; and a particle decelerator located between the inlet opening and the compressor such that air travelling towards the compressor from the inlet opening must travel through the particle decelerator and wherein an area of the particle decelerator is greater than an inlet and an outlet of the particle decelerator.

Abstract: A method of purging a combustor is provided. The method includes opening an isolation valve configured to regulate a flow rate of a fluid sent to at least one fuel nozzle of a combustor. The method also includes opening a control valve located upstream of the isolation valve after opening the isolation valve, wherein the isolation valve and the control valve are located within a fluid supply line.

Abstract: A gearbox mounting link between a gas turbine engine structure and a gearbox mounting location comprises an engine attachment piece rotatably secured to the gas turbine engine structure. The engine attachment piece comprises first and second plates extending in parallel planes and separated by a gap having a gap width. A gearbox attachment piece is situated between the parallel plates, and is secured to the gearbox. A breakable primary retention fastener extends snugly through the parallel plates and the gearbox attachment piece, thereby rigidly retaining the gearbox with respect to the gas turbine engine in two degrees of freedom so long as the breakable primary retention fastener remains intact. A durable secondary retention fastener extending snugly through the parallel plates, and extends with clearance through the gearbox attachment piece via an oversized fastener passage, thereby constraining the gearbox attachment piece in the event that the breakable primary retention fastener breaks.

Abstract: A gas turbine engine includes a gear assembly and a bypass flow passage that includes an inlet and an outlet that define a design pressure ratio between 1.3 and 1.55. A fan is arranged at the inlet. A first turbine is coupled with a first shaft such that rotation of the first turbine will drive the fan, through the first shaft and the gear assembly, at a lower speed than the first shaft. The fan includes a row of fan blades. The row includes 12-16 (N) fan blades, a solidity value (R) that is from 1.0 to 1.3, and a ratio of N/R that is from 10.0 to 16.

Abstract: A method of controlling an exhaust gas recirculation (EGR) gas turbine system includes adjusting an angle of a plurality of inlet guide vanes of an exhaust gas compressor of the EGR gas turbine system, wherein the plurality of inlet guide vanes have a first range of motion defined by a minimum angle and a maximum angle, and wherein the angle is adjusted based on one or more monitored or modeled parameters of the EGR gas turbine system. The method further includes adjusting a pitch of a plurality of blower vanes of a recycle blower disposed upstream of the exhaust gas compressor, wherein the plurality of blower vanes have a second range of motion defined by a minimum pitch and a maximum pitch, and the pitch of the plurality of blower vanes is adjusted based at least on the angle of the plurality of inlet guide vanes.

Abstract: A control device for an internal combustion engine including a variable compression ratio mechanism for changing a compression ratio by using an electric actuator prohibits control of changing the compression ratio to a higher compression ratio when a failure occurs in the variable compression ratio mechanism. Thereby, upon failure occurrence, the compression ratio of the variable compression ratio mechanism at the time of the failure occurrence is maintained or reduced to less than this compression ratio so as to protect the electric actuator and prevent abrupt changes in torque.

Abstract: A method for controlling an engine includes the steps of, in response to a transient operating event, determining a first amount of exhaust gas recirculation (EGR) that if provided to an intake of the engine would avoid turbocharger compressor surge in a turbocharger, determining a second amount of EGR that if provided to the intake would avoid turbocharger compressor choke in the turbocharger, and determining a third amount of EGR that if provided to the intake would avoid engine smoking, and adjusting EGR provided to the intake of the engine in accordance with the determined first, second, and third amounts.

Abstract: An engine control system operates to communicate via a sensor link with one or more sensors in a vehicle based on different communication protocols. The sensors alter communication protocols for communicating via the sensor link to an engine control unit to reduce or increase a current consumption according to one or more predetermined criteria. In response to a predetermine threshold of one or more of the predetermined criteria being satisfied, a sensor communicates in a first communication protocol as opposed to a second communication protocol while operating to communicate a current signal or a modulated current signal.

Abstract: A system for controlling an internal combustion engine has an in-cylinder pressure sensor, a crank angle sensor and a controller coupled to receive inputs from the pressure sensor and crank angle sensor. The controller is configured to convert the cylinder pressure input into a combustion metric indicative of the combustion occurring in the measured cylinder and control fuel input and timing into the engine based on the combustion metric. The controller samples the in-cylinder pressure sensor at a high frequency during critical combustion events and at a lower frequency during the non-critical cylinder conditions.