Abstract: Methods and systems are provided for improving engine knock control by accounting for a drop in charge cooling efficiency of a knock control fluid at higher temperatures. In response to the prediction of an elevated temperature of a knock control fluid at a time of release from a direct injector, a pulse width of the injection is adjusted. Any knock relief deficits are compensated for using alternate engine adjustments, such as boost or spark timing adjustments.

Abstract: The present disclosure relates to an ignition plug for initiating combustion in a cylinder of a combustion engine, wherein the cylinder can be operated in an active mode and in a deactivated mode. The ignition plug comprises a housing that can be connected to the cylinder, an insulator is fastened to the housing and comprises an axial bore hole and a middle electrode is arranged in the axial bore hole to form an annular gap between the middle electrode and the insulator. The ignition plug comprises a sealing element that can be activated in dependence upon the mode of the cylinder so as to seal the gap preventing any seepage of oil during cylinder deactivation.

Abstract: A system for controlling condensation associated with a vehicle engine air supply includes a shutter assembly configured to selectively allow airflow through the shutter assembly. An air supply cooler is configured to provide intake air to an engine. The air supply cooler is situated near the shutter assembly such that air flowing through the shutter assembly is incident on an exterior of the air supply cooler. A controller determines when at least one condition exists that is conducive to condensation within the air supply cooler and controls the shutter assembly to alter an amount of air incident on the exterior of the air supply cooler for controlling condensation in the air supply cooler.

Abstract: A system and method control a powered system having an engine configured to operate using a plurality of fuel types. A first set of control signals including a first set of valve signals are communicated to each fuel tank based at least in part on a first stored engine operating profile to control amounts of fuel provided from each fuel tank to the engine. A different, second set of control signals including a second set of valve signals are communicated to the fuel tanks based at least in part on a second stored engine operating profile to control or change the amounts of fuel from each fuel tank to the engine. The system and method can switch between operating conditions associated with different external domains to alter the engine operating profile used to control the fuel or fuels supplied to the engine.

Abstract: Methods and systems are provided for controlling canister purge flow in a boosted engine. An example method for the boosted engine comprises, during boosted conditions, flowing stored fuel vapors from a canister into an ejector coupled in a compressor bypass passage, the flowing bypassing a canister purge valve. The method further comprises, responsive to a canister load higher than a threshold load, closing a canister vent valve coupled to the canister, and discontinuing flowing stored fuel vapors from the canister into the ejector.

Abstract: Methods and systems are provided for controlling the purging of a fuel vapor canister coupled to a vehicle fuel tank, configured for capturing and storing vapors emanating from the tank. In one example, two canister purge valves are coupled in series in a fuel vapor conduit between the fuel vapor canister and engine intake, one at the intake manifold and one at the fuel vapor canister, such that fine control over the introduction of fuel vapors into the engine is maintained via the purge valve at the intake manifold, while thorough purging of the fuel vapor canister may be regulated via the purge valve at the fuel vapor canister. In this way, fuel vapors in the fuel vapor canister may be effectively purged to intake, thus reducing the potential for undesired evaporative emissions.

Abstract: A vehicle includes an engine and a particulate filter that is situated to filter particulates from the exhaust fluid. A controller is configured to implement a sequence of particulate filter regeneration techniques including a first technique during an engine cold start condition, a second technique during a running engine idle condition, and a third technique during a driving condition. The controller is configured to determine whether particulate filter regeneration is desired, implement the first technique when particulate filter regeneration is desired, determine whether particulate filter regeneration is still desired after using the first technique, implement the second technique when regeneration is still desired after using the first technique, determine whether particulate filter regeneration is still desired after using the second technique, and implement the third technique when regeneration is still desired after using the second technique.

Abstract: Methods and systems are provided for ambient temperature estimation and engine control during sensor initialization. In one example, on vehicle start-up after a period of inactivity, during sensor initialization ambient conditions may be estimated using remotely obtained ambient conditions data. Engine actuators may be adjusted based on ambient conditions determined from remote of the vehicle during sensor initialization and on completion of sensor initialization, the engine actuator may be adjusted based on the ambient conditions determined from the sensor.

Abstract: The fuel pressure sensor abnormality diagnosis apparatus diagnoses that a fuel pressure sensor is abnormal in the case where, because a state where a detected value of the fuel pressure sensor is less than a target value occurs, a fuel discharge amount of a fuel pump is increased, and as a result, the fuel discharge amount reaches its maximum amount, and even if a predetermined period has elapsed since the fuel discharge amount reaches its maximum amount, the detected value is less than the target value.

Abstract: A fuel level sensor detects the level of fuel in a fuel tank. A level signal detected by a float does not change in a full dead zone and an empty dead zone. During normal fuel consumption, the level signal changes according to the consumption amount. Thus when an electronic control unit, or ECU, detects that the fuel level sensor is operating normally, the ECU resets a fuel consumption amount. However, when a small quantity of fuel is supplied, the fuel consumption amount is not reset, and a measurement error may occur during failure detection. Accordingly, the ECU corrects a failure threshold value to avoid misdiagnosing a failure.

Abstract: A method for calibrating a drive of a throttle valve of an internal combustion engine of a motor vehicle includes detecting whether the internal combustion engine is currently running or is not running. The method further includes activating the drive to displace the throttle valve into a target position if it is detected that the internal combustion engine is currently not running. The method further includes calibrating a characteristic at the target position. A correlation between a rotor position of the drive and an output voltage of a throttle valve angle transducer follows a characteristic.

Abstract: A control device of an engine includes an adjustment mechanism and a controller. The adjustment mechanism is configured to adjust an intake air amount. The controller is configured to save a first learning value in a volatile storage medium, the first learning value being obtained by learning an operation amount of the adjustment mechanism when the engine is idle. The controller is configured to control the adjustment mechanism according to the first learning value. The controller is configured to save a second learning value in a non-volatile storage medium, the second learning value being equal to the first learning value. The controller is configured to correct the first learning value using the second learning value after the first learning value is cleared.

Abstract: In a fuel injection controller, a first throttle opening TH0 is defined at a specific time P2. The P2 is a specific time later than the peak value of an intake pipe internal pressure PB of a previous cycle. In the cycle, P3 is a specific time that is set immediately before the calculation of the injection time. A second throttle opening TH2 is defined at P3. The fuel injection controller corrects a fuel injection amount based on variation in correction time ta0 at the first throttle opening TH0 to correction time ta1 at the second throttle opening TH1. The time P2 is later than time P1, which is the peak value of the intake pipe internal pressure of the previous cycle. Accordingly, the fuel injection amount correction is completely unaffected or only slightly affected by the intake pipe internal pressure, thus ensuring close-to-ideal correction.

Abstract: Various methods and systems are provided for individually adjusting fueling to cylinders of an engine based on an output of a knock sensor coupled to each cylinder. In one embodiment, a method for a multi fuel engine comprises individually adjusting, for each cylinder of the engine, one or more of a gas flow rate of gaseous fuel, a diesel flow rate of diesel fuel, an injection or induction timing of gaseous fuel, or an injection timing of diesel fuel based on each of an output of an individual knock sensor for each cylinder, a knock threshold for current engine operating conditions, and a reference value of individual cylinder output.

Abstract: Any one or more members of an engine, that is, a piston, a cylinder head and a valve, has a wall face disposed face-to-face to a combustion chamber, and the wall face is coated by a heat-insulation coating film. The heat-insulation coating film includes a heat-insulative layer formed on a surface of the wall face, and an inorganic-system coated-film layer formed on a surface of the heat-insulative layer. The heat-insulative layer includes a resin, and first hollow particles buried inside the resin and exhibiting an average particle diameter being smaller than a thickness of the heat-insulative layer. The inorganic-system coated-film layer includes an inorganic compound.

Abstract: A piston is disclosed. The piston may have a piston crown having a top surface. The piston may also have a first land disposed in the piston crown adjacent the top surface. The first land may have a side surface disposed generally orthogonal to the top surface. Further the piston may have a second land axially separated from the first land. In addition, the piston may have a groove disposed between the first land and the second land. The piston may also have a notch extending between the side surface and the top surface. The notch may have a generally concave shape and may extend circumferentially around the top surface.

Abstract: A piston rod seal unit. The piston rod seal unit includes a housing, a cylinder gland, and at least one floating rod seal assembly mounted in the cylinder gland, the floating rod seal assembly comprising at least one rod seal mounted onto the floating rod seal assembly.

Abstract: A method to reduce aerodynamic drag of a engine exhaust/engine nozzle includes collecting data that is indicative of an instant flight condition, entering the data into a decision algorithm that, based on the data, outputs at least first and second drag control parameters corresponding, respectively, to an angle of one or more variable area turbines of a turbine engine and a position of a variable area exhaust nozzle of the turbine engine, and adjusting the angle of the one or more variable area turbines and the position of the variable area exhaust nozzle according to, respectively, the first and second drag control parameters to reduce aerodynamic drag of an engine exhaust/engine nozzle of the turbine engine.

Abstract: A turbofan engine includes a fan variable area nozzle includes having a first fan nacelle section and a second fan nacelle section movably mounted relative the first fan nacelle section. The second fan nacelle section axially slides aftward relative to the fixed first fan nacelle section to change the effective area of the fan nozzle exit area.

Abstract: A thrust reverser of a propulsion system nacelle is provided. The thrust reverser includes a fixed structure, a translating structure, and an aerodynamic feature. The fixed structure includes an annular wall that partially defines an annular bypass airstream duct. The fixed structure is bifurcated into left and right side sections. The annular wall extends between upper and lower bifurcation walls of the left side section, and extends between upper and lower bifurcation walls of the right side section. The translating structure is moveable relative to the fixed structure, between a stowed position and a deployed position. The aerodynamic feature that includes a flange disposed relative to an aft end portion of one of the lower bifurcation walls. The flange aids in preventing aerodynamic drag.

Abstract: One embodiment includes a pivot thrust reverser. The pivot thrust reverser includes a first tandem pivot door subassembly comprising an inner panel and an outer panel. The inner panel and the outer panel are connected so as to rotate simultaneously about respective pivot axes that are each positionally fixed axes relative to the gas turbine engine assembly. A second tandem pivot door subassembly is included, spaced from the first tandem pivot door subassembly and comprising an inner panel and an outer panel. The inner panel and the outer panel are connected so as to rotate simultaneously about respective pivot axes that are each positionally fixed axes relative to the gas turbine engine assembly.

Abstract: The invention relates to a device for mixing a stream of supercharging air and a stream of recirculated exhaust gases. The device comprises a manifold allowing the stream of air and the stream of recirculated gases to be mixed, and allowing the mixture to be distributed in the cylinder head. The device also comprises means for conveying the recirculated exhaust gases in the manifold that allow the distributed injection of the recirculated exhaust gases into the stream of supercharging air. The device additionally comprises means for thermally insulating the conveying means in order to limit the cooling of the recirculated exhaust gases by the supercharging air.

Abstract: A self-propelled construction device, in particular a soil compactor, includes a turbocharged diesel engine with a first radiator arrangement for cooling charge air and a second radiator arrangement for cooling a cooling liquid and/or hydraulic oil, with a first radiator fan being allocated to the first radiator arrangement and a second radiator fan being allocated to the second radiator arrangement and the first radiator fan and the second radiator fan being able to be operated essentially independently from each other.

Abstract: A method for a fuel system, comprising: indicating a leak in a fuel tank following applying a vacuum to the fuel tank by running a vacuum pump in a first direction; then purging a fuel vapor canister to the fuel tank by running the vacuum pump in a second direction, opposite the first direction. In this way, the fuel vapor canister may be purged of its contents following a fuel system leak check. This may reduce bleed emissions while increasing the efficiency of the vehicle, as the engine does not need to be turned on in order to purge the canister.

Abstract: An ejector, or arrangement having the ejector, has a compact structure requiring little installation space, permitting a sufficient pumping action, and, in case of an error, the error can be unambiguously detected and diagnosed as the source of the problem, which ejector for insertion into a receptacle, has a base element with a throat that fluid-connects a first opening and a second opening to each other, whereby the throat has a narrowest part that is fluid-connected to an associated third opening, and whereby the throat widens, at least in sections, towards the first and second openings, wherein, as a functional component, the ejector can be inserted into and/or positioned in a mating receptacle in the correct orientation so as to fulfill its function as a jet pump in an arrangement.

Abstract: In a vehicle provided with an engine, an EGR cooler for cooling EGR gas recirculated from an exhaust channel of the engine to an intake channel thereof by using a coolant, an electric pump for supplying the coolant to the EGR cooler, and a gas temperature sensor for detecting the temperature of the EGR gas temperature at the downstream of the EGR cooler, an ECU acquires a first gas temperature in a normally stable state where the electric pump is rotating, thereafter performs a coolant amount suppressing process to suppress the rotational speed of the electric pump, acquires a second gas temperature in a suppressed stable state after a predefined time has elapsed from the start of the coolant amount suppressing process, and determines that the EGR cooler is abnormal if a difference between the first gas temperature and the second gas temperature is less than a threshold value.

Abstract: An air intake duct 8 is fixed to a rear of a cab 3 of a transport vehicle to extend vertically, air intakes 6a, 6b, 6c, 6d, 6e and 6f being opened on an upper portion of the air intake duct for suction of fresh air through the intakes as engine intake air. The air intake duct 8 is constituted by a blow-molded duct body 9 and an internal partition component 10 enclosed in the duct body in blow molding of the duct body 9 to partition an interior of the duct body 9 into a plurality of channels A, B, C, D, E and F reaching the air intakes.

Abstract: Air induction systems are for an internal combustion engine. The air induction systems comprise an air intake plenum that conducts intake airflow to an air cleaner for cleaning prior to combustion in the internal combustion engine. The air intake plenum is movable with respect to the air cleaner between an open position separated from the air cleaner and a closed position connected to the air cleaner. A bellows connects the air intake plenum to the air cleaner when the air intake plenum is in the closed position. The bellows has an upstream first end that seals with the air intake plenum and a downstream second end that seals with the air cleaner.

Abstract: A valve for controlling piston cooling jets in an internal combustion engine is disclosed. The valve includes a valve body equipped with an oil inlet for drawing oil from an oil gallery and an oil outlet for connection with a piston cooling jet gallery. The valve body is equipped with an air inlet for drawing air from an intake manifold of the engine, and with a valve element configured to be actuated by the pressure of the oil entering the oil inlet and of the air entering the air inlet.

Abstract: A portable fixture for assembling a vehicle fuel tank includes a frame including a platform having a fuel tank locator mounted thereon for at least partially receiving and supporting an associated fuel tank for assembly. A lid is connected to the frame and is movable between a raised position and a lowered position. A locking device is located on the lid and includes at least one engagement member for engaging a part of an associated lock ring for securing an associated fuel pump in the associated fuel tank. The locking device is operable to automatically move from a first position to a second position for rotating the associated lock ring to a locked state. A stop mechanism is operably connected to the locking device to automatically stop movement of the locking device at the second position to prevent over tightening of the associated lock ring.

Abstract: An electrical module for use within a fuel injector for delivering fuel to an internal combustion engine is described. The electrical module has a variable length. The electrical module comprises electrical contacts for operatively connecting the electrical module to a power plug of a fuel injector. The electrical module also comprises an actuator for operatively controlling a control valve disposed within the fuel injector. The electrical module also comprises electrical conductors arranged within a protective housing. These electrical conductors provide an electrical connection between the electrical contacts and the actuator in order to provide electrical power to the actuator when the electrical contacts are operatively connected to the power plug of the fuel injector. The body of the electrical module is comprised of a compressible elastic element, such that the length of the module is variable by compressing the elastic element. Injectors including such electrical modules are also described.

Abstract: An injector drive device supplies driving electric power to injectors injecting fuel to cylinders of an internal combustion engine. The cylinders are grouped into multiple groups including at least a first cylinder group and a second cylinder group. The injector drive device includes: a booster circuit that boosts voltage of electric power supplied from an external power source; a first and second capacitors that accumulates electric power to be supplied to the injectors of the first cylinder group and the second cylinder group respectively; switch elements that selectively supply the output of the booster circuit to the capacitors; and a controller that, in the case where a charging amounts of the capacitors both are below a predetermined value, switches the switch elements to supply the output of the booster circuit preferentially to the capacitor that has a shorter period until a next planned fuel discharge start.

Abstract: A fuel injection control apparatus is provided with a first valve opening timing determination portion that determines a first valve opening timing on the basis of a collision signal that is included in detected signals of an in-cylinder pressure sensor and indicates a collision between a movable core and a valve element and a second valve opening timing determination portion that determines a second valve opening timing on the basis of another collision signal that is included in the detected signals and indicates a collision between the movable core and a stationary core.

Abstract: Method to control an electromagnetic actuator of an internal combustion engine, in particular for a fuel pump of a direct-injection system; wherein the electromagnetic actuator is controlled by an electric current pulse of the Peak&Hold type, i.e. subdivided into a peak phase and a hold phase; the method includes acquiring the initial duration of the peak phase, during which a peak control current is to be supplied to the electromagnetic actuator to control the movement of a component of the electromagnetic actuator moving towards a position defined by a limit stop; and determining the duration of the peak phase by progressively decreasing the initial duration of the peak phase by a first change.

Abstract: An injector has an injector body including an injector cavity defining an inner wall and a longitudinal axis, an injector orifice and a plunger slidably disposed within the injector cavity. The plunger has an outer portion and an inner portion at different locations longitudinally along the plunger. The inner portion has a plurality of surface portions including a guiding portion configured to substantially mate with the inner wall of the injector cavity, guide the plunger to slidably move in a direction along the longitudinal axis and substantially prevent the plunger from laterally translating within the injector cavity. The plurality of surface portions also includes a restriction portion configured to form a restrictive cavity between an exterior surface of the inner portion and the inner wall of the injector cavity axially along a length of the inner portion.

Abstract: A fuel injector for an internal combustion engine includes: an electromagnetic actuating element having a solenoid coil, a core and a valve casing as the outer solenoid circuit component, and a movable valve-closure body, which cooperates with a valve-seat surface assigned to a valve-seat body. The core and a connection pipe are fixedly connected in an inner opening of a thin-walled valve sleeve and the valve casing at the outer circumference of the valve sleeve is fixedly connected to the valve sleeve by being pressed in/on.

Abstract: A valve for metering a flowing medium, in particular a fluid, having a metering opening situated in the fluid flow and surrounded by a valve seat, a valve needle that controls the metering opening and that has a closing head that works together with the valve seat to close and release the metering opening, a piezoelectric actuator that acts on the valve needle to release the metering opening, and an elastic resetting element that acts on the valve needle to close the metering opening. To minimize the required stroke of the piezoelectric actuator for a required stroke of the closing head of the valve needle, the point of action of the resetting element on the valve needle is situated on or close to the end of the valve needle that bears the closing head.

Abstract: Fuel pump for a direct injection system provided with a common rail. The fuel pump has a pumping chamber defined in a main body; a piston which is mounted in a sliding manner inside the pumping chamber to cyclically vary the volume of the pumping chamber; an intake channel which originates from a wall of the pumping chamber; an intake valve which is coupled to the intake channel; a delivery channel which originates from a wall of the pumping chamber; a delivery valve which is coupled to the delivery channel; and an actuating spring which has a plurality of turns having a pitch that varies between the turns and that is coupled to the piston so as to push the piston towards a maximum volume or minimum volume position of the pumping chamber.

Abstract: Methods and system for providing heat to a vehicle are presented. In one example, a heat pump supplies thermal energy to an engine to reduce engine emissions during engine starting. Further, heating the engine via the heat pump may also reduce engine friction at colder ambient temperatures where oil viscosity may be increased.

Abstract: An ignition control device includes a control unit to control first to third switching elements so that during ignition discharge, which is started by turning off the first switching element, energy stored on a capacitor is discharged by turning off the third switching element and turning on the second switching element for supplying a primary current to an end of a primary winding opposite to an end thereof connected to a direct-current power supply. During inductive discharge of a spark plug, the control unit non-intermittently turns on the second switching element so that the second switching element is turned on over a successive energy input time period, according to the operating conditions of an internal combustion engine.

Abstract: A fuel property determination apparatus for an internal combustion engine is applied to an internal combustion engine that is equipped with an ignition plug and an ignition timing controller. An electronic control unit provided in the fuel property determination apparatus executes a determination process of making a determination on a property of a fuel supplied to the internal combustion engine based on an ignition sufficiency ratio, during a predetermined period after startup of the internal combustion engine. The electronic control unit is configured to determine that the property of the fuel is heavy when a determination index value that is obtained by subjecting the ignition sufficiency ratio to a smoothing process is equal to or larger than a predetermined threshold. The electronic control unit is configured to set a smoothing coefficient to a value corresponding to each of a first period, a second period, and a third period.

Abstract: Disclosed is a glow plug diagnosis method of being able to diagnose the aging or fault of a glow plug without being affected by cooling associated with air intake/exhaust or fuel injection, the method including: a step (S102) of energizing a glow plug 1 in a predetermined manner when a key switch 11 of a vehicle is turned on; and a step (S106) of measuring the resistance value of the glow plug 1 when the energization of the glow plug 1 is started, and the resistance value of the glow plug when the energization of the glow plug 1 is started and then a change in the resistance value is saturated, and of calculating a change in the resistance value over time as a resistance value gradient, in which it is determined that the glow plug 1 is normal when the resistance value gradient exceeds a predetermined first gradient reference value a, and it is determined that the glow plug 1 is faulty, and a warning lamp or the like is lighted when the resistance value gradient is less than a predetermined second gradient ref

Abstract: An auto-ignition engine system is provided. The auto-ignition engine system includes a cylinder having an intake valve and an exhaust valve coupled thereto, an opening in a cylinder head defining a portion of the boundary of the cylinder, a glow plug heating element extending through the opening into the cylinder, an insert at least partially surrounding a glow plug heating element and coupled thereto, and an adjustment mechanism configured to alter the position of the glow plug heating element and the insert in the cylinder.

Abstract: A submersible telemetry platform includes a body and lift-generating surface(s) configured to provide lift to the body when a fluid flows thereacross. The platform includes attitude control surface(s) for controlling a pitch of the body in such a way that modifies the lift characteristics of the body. A control device is coupled to the attitude control surface(s) for controlling the lift attitude control surface(s). A base is configured to be anchored to a subsurface location and is coupled to the telemetry platform by a tether in such a way that the telemetry platform has freedom-of-movement about a common center point at the base. Telemetry equipment is coupled to the body of the telemetry platform for enabling wireless communication with at least one remote device. The telemetry platform is controllable to rise from a submersed position in a body of liquid to a surface of the body of liquid.

Abstract: The present invention provides a hydroelectric turbine for generating electricity by extracting power from the tidal flow of water through the turbine, the turbine comprising a shaftless rotor which results in the eccentric rotation of the rotor relative to the stator, which can result in uneven generation of power through differences in the spacing between rim mounted magnets and coils forming a generator of the turbine, the turbine thus employing groupings of equally spaced and serially connected coils.

Abstract: The blade root or the internal structure of the blade comprise joining elements for joining to the hub disposed between lamination sheets, consisting of a plurality of inserts, designed to receive a fixing element related to the hub, which facilitate the coupling of the blade to the wind turbine hub. It incorporates fibre bands of compact, elongated and enveloping configuration which grip the inserts configuring assemblies embedded between the lamination sheets, wherein the fibre bands guarantee the progressive progression of stresses between blade and hub.

Abstract: The present invention preferably relates to a joined blade rotor system having substantially a horizontal axis for a wind turbine including a number of joined blade assemblies extending substantially radially from a central hub wherein each joined blade assembly includes a first blade and a second blade or more blades in different planes that are connected by one or more brace systems to each other. Each central hub includes an operating member to effect pitch rotation of the joined blade assembly or directly the first blade pitch rotation and the second blade pitch rotation about the respective blade axis. A bearing provides a relative rotation between the first or second blade and brace strut while pitch angles change.

Abstract: A method of manufacturing is presented. The method includes providing a plurality of structural layers comprising a plurality of composite rods, wherein at least one structural layer from the plurality of structural layers is attached to a separation layer. The method further includes stacking the plurality of structural layers, detaching the separation layer from the at least one structural layer, and curing the plurality of structural layers to form a structural component of a wind turbine blade.

Abstract: The present subject matter is directed to a system and method for operating a wind turbine. The method includes determining an actual operating time for one or more wind turbine components at multiple power levels; determining a corresponding wind condition for each of the operating times at each power level; estimating a loading condition acting on the one or more wind turbine components at the multiple power levels and the corresponding wind conditions; estimating an accumulated fatigue life consumption of the one or more wind turbine components based at least partially on the operating times and the estimated loading conditions; and, operating the wind turbine based on the accumulated fatigue life consumption.

Abstract: A wind turbine has a Lidar device to sense wind conditions upstream of the wind turbine. Wind speed signals from the wind turbine are processed to detect an extreme operating gust. The detection is performed by differentiating the axial wind velocity and filtering for a period of time. On detection of extreme operating gust the system controller takes necessary evasive action which may include shutting down the turbine or varying the blade pitch angle.