Abstract: The gas turbine engine can have an engine core; a core output shaft drivable by the engine core; a power output shaft; an auxiliary power shaft; and a reduction gearbox having gears, the gears drivingly connecting the core output shaft to the auxiliary power shaft. The gears can include an epicyclic gearing drivingly connecting the core output shaft and the auxiliary power shaft to the power output shaft. The gas turbine engine can further have a second auxiliary power shaft interconnected to the auxiliary power shaft, the power output shaft, and the core output shaft by the gears.

Abstract: Discharge valve of an aircraft turbomachine, including a discharge gate intended to be mounted pivotably about an axis between a position for closing an air passage orifice and an open position of said orifice, the orifice being formed in an intermediate casing of the turbomachine, the discharge valve including a sealing device having a seal configured to be movably mounted on the intermediate casing and a movement system configured to move the seal between a first position in which the seal is intended to bear against the discharge gate when the gate is in a closure position, and a second position in which the seal is retracted with respect to the air passage orifice when the discharge gate is in an open position.

Abstract: A control method of valve opening and closing for an engine of which an intake continuous variable valve duration (CVVD) apparatus and an intake continuous variable valve timing (CVVT) apparatus are provided on the intake side, and an exhaust continuous variable valve duration (CVVD) apparatus and an exhaust continuous variable valve timing (CVVT) apparatus are provided on the exhaust side. The control method includes: determining, by a controller, a driving region among a predetermined plurality of driving regions according to a speed and a torque of the engine; and controlling, by the controller, opening timing, closing timing, and opening duration of each of an intake valve and an exhaust valve according to the driving region of the engine. The intake valve closing (IVC) timing is before a bottom dead center (BDC) in all driving regions.

Abstract: A variable valve device includes: a cam having profiles with different exhaust valve opening and closing timings, a rocker arm, and a socket having a piston. In particular, an exhaust valve is connected to a valve bridge and the piston vertically moves by oil pressure supplied to an inside of the socket. When the piston protrudes downward from the socket, the rocker arm and the cam come into contact with each other, and the exhaust valve is opened and closed by the cam profiles.

Abstract: The present invention pertains to a method for controlling operation of an internal combustion engine configured to run on a fuel mixture of hydrogen and natural gas. The method comprises a step of obtaining temperature values measured by at least one temperature sensor provided in a cylinder head of the engine; and a step of controlling operation of the engine in dependence on the temperature values.

Abstract: Embodiments described herein relate to systems and methods of cylinder deactivation in compression-ignition engines. An engine described herein can include N cylinders, with N being an integer of at least 2, with each cylinder including an inner surface, a piston disposed and configured to move in each cylinder of the N cylinders, an intake port, an exhaust port, and a fuel injector. The piston and the inner surface define a combustion chamber. A method of operating the compression ignition engine includes injecting a fuel into each of the combustion chambers, combusting substantially all of the fuel in the compression ignition engine, monitoring engine load of the compression ignition engine, and deactivating a cylinder of the N cylinders upon a decrease in load to less than (N?1)/N×FL, wherein FL is a full load at a given engine speed.

Abstract: A method of heating a catalytic converter of an internal combustion engine, wherein the method comprises the steps of: igniting the gas charge in one of the cylinders in a range from 10° CA before ignition top dead center to 20° CA after ignition top dead center; and opening the exhaust valve of the cylinder exhaust of the cylinder in a range from 30° CA to 55° CA after ignition top dead center. The method allows the catalytic converter of the internal combustion engine to quickly reach operating temperature and thus contributes to the reduction of pollutant emissions. An internal combustion engine is also provided that is designed to carry out the method of the invention for heating a catalytic converter.

Abstract: A start control apparatus of an internal combustion engine includes: a gas sensor configured to detect a gas concentration of the liquefied gas fuel in a gasified state at a position near a combustion chamber; a scavenging pump configured to perform scavenging from a position upstream of the combustion chamber to a position downstream of the combustion chamber; and a control unit configured to prohibit a start of the internal combustion engine and operate the scavenging pump when the gas concentration detected by the gas sensor before the start of the internal combustion engine is equal to or greater than a predetermined threshold value.

Abstract: An engine control apparatus includes a control system including one or more memories and one or more processors communicably coupled to one another, and controlling ignition timing of a spark plug. The one or more memories hold first and second ignition timing maps that provide setting of the ignition timing for each engine operation point. The one or more processors determine the number of injection stages of an injector. When the number of injection stages of the injector is the first number of injection stages, the one or more processors control the ignition timing of the spark plug based on the first ignition timing map. When the number of injection stages of the injector is the second number of injection stages greater than the first number of injection stages, the one or more processors control the ignition timing of the spark plug based on the second ignition timing map.

Abstract: A near isothermal machine for compressing or expanding gas having a piston in a main cylinder with a heat absorbing and releasing structure attached thereto. The main cylinder contains a substantially constant volume of liquid maintained at a substantially constant temperature and a variable volume of gas, the gas temperature being controlled to substantially the same temperature as the liquid by the movement with the piston of the heat absorbing and releasing structure. A compensator is provided to compensate for variations in the level of liquid as the piston moves in the main cylinder.

Abstract: A novel configuration for an axial flow gas turbine engine for aircraft has an engine core having a core length and including a first turbine, an axial compressor, and a drive connecting the first turbine to the axial compressor, the engine core further including a second turbine, and a fan shaft connecting the second turbine to a fan located upstream of the engine core, the fan including a plurality of fan blades extending from a fan hub, the fan having a tip radius from 90 mm to 225 mm and wherein the ratio of fan tip radius to an engine length is 0.15 to 0.25. The engine may have 3, 4 or 5 compressor stages and combustor volume (in litres) which when divided by fan tip radius (in mm) is 0.015 to 0.083. The fan may be multistage fan configured to permit an electric motor to be located within fan hub diameter.

Abstract: Described is a fan assembly for an electrical aircraft motor having an axial fan with an inner hub of a first diameter and an outer hub of a second diameter. The outer hub may be concentrically aligned with the inner hub. A plurality of blades may extend between the inner hub and the outer hub. The fan assembly may also have a mounting plate connected to the inner hub. The mounting plate may attach to a component of the electrical aircraft motor.

Abstract: A fuel injection nozzle is connected to a pump for injecting the fuel and to a fresh air supply for the internal combustion engine. In order to provide an injection device which allows temperature control of the injected media with a simple structure and arrangement in the motor vehicle, the injection device has an electric heating device for heating the fresh air supplied. The heating device is fluidically connected via a first hose section to the inlet side of the fresh air supply and via a second hose section to the internal combustion engine. The heating device has a layered heating block comprising at least one heat-emitting layer and at least one heat-generating layer coupled thereto in a heat-conducting manner The heat-generating layer includes at least one PTC element and conductor elements abutting opposed sides of the PTC element.

Abstract: A vessel propulsion apparatus includes an engine and a propulsion unit to be driven by the engine. The engine includes a cylinder head including a combustion chamber and a pair of intake openings to communicate with the combustion chamber. The engine further includes a pair of intake ports respectively including a pair of downstream portions respectively connected to the pair of intake openings. A distance between the pair of downstream portions decreases toward the pair of intake openings.

Abstract: An injection nozzle that for a first fuel in a first mode and in a second mode ignition fluid for a second fuel is introduced. The injection nozzle includes an injection nozzle body with first and second injection orifices and a displaceable injection nozzle needle in the injection nozzle body. The first injection orifices have smaller injection orifice cross-sections than the second injection orifices and are arranged at a defined distance. In a first displacement direction for closing the orifices the first injection orifices are located in front of the second injection orifices and seen in a second displacement direction of the injection nozzle needle for the opening or unblocking of the orifices, the first injection orifices are located behind the second injection orifices.

Abstract: An injector has an injector needle (2) by means of which an outlet opening (4) of an injector housing (1) can be closed. The injector needle (2) can be adjusted in pressure-controlled fashion from a closed position into an open position. The injector needle (2) is axially fixedly connected to a piston (26) which is under closing pressure in one direction so that the injector needle (2) closes the outlet opening (4). In the other direction, the piston (26) and thus the injector needle (2) can be displaced by a valve-controlled control pressure, whereby the injector needle (2) passes into its open position and releases the outlet opening (4).

Abstract: The subject matter of this specification can be embodied in, among other things, an internal combustion engine ignition system includes a voltage divider configured to be coupled to a primary transformer ignition coil connector, the voltage divider configured to reduce a voltage received from the primary transformer ignition coil to a controller voltage, a comparator circuit with an input coupled to an output of the voltage divider, and a controller configured to detect the voltage output of the voltage divider, detect the voltage output of a vehicle electric power supply, detect the voltage output of a comparator, and determine an estimated breakdown voltage of a spark plug based on the detected output voltage of the voltage divider and the detected voltage of the power supply.

Abstract: Provided is an igniter capable of reducing occurrence of malfunction due to noise. An igniter (100) includes a switch element (111) having a first end, a temperature sensor (112) including at least one diode and having a cathode end (112B), a switch element control device (12) configured to control the switch element, and a switch element electrode (Pe) connected to the first end of the switch element and to the cathode end, and the switch element control device has a ground electrode (Pgnd) electrically isolated from the cathode end.

Abstract: An igniter system and method for igniting a propellant by an optical energy source. The igniter system including an igniter composite and a propellant. The igniter composite including a reactive component and a fluoropolymer. The propellant is coupled to the igniter composite. The igniter composite has a composition including nano-aluminum at ideal stoichiometry in polyvinylidene fluoride. The igniter composite is configured to achieve a sustained ignition from a wavelength emitted from the optical energy source. The wavelength is between around 250 nanometers to around 1100 nanometers.

Abstract: A water or wind turbine in which fatigue fracture is less likely to be generated in a rotation shaft is provided. A wind turbine comprises: a rotation shaft extending in the vertical direction; a plurality of arms extending horizontally from the rotation shaft and formed at equal intervals along the rotation direction; and a plurality of wings attached to tips of the arms and extending in the upper/lower direction, and the rotation shaft is rotated by lift generated on the wings, wherein cross sections of the wings have a uniform shape and a uniform area from upper ends of the wings to lower ends of the wings, wherein seen from the extending direction of the rotation shaft, the plurality of wings are projected on the entire circumference of a single virtual circular ring C whose center is on the rotation shaft, and wherein lengths of the wings in the vertical direction are equal over the entire circumference.

Abstract: A power generation and/or storage apparatus comprising a buoyant flywheel, wherein the flywheel is arranged, in use, in contact with a body of liquid for rotation about a substantially vertical axis, an underside of the flywheel comprising a circumferentially extending opening, wherein, in use, gas is trapped within the opening by the surface of the liquid to define an gas cushion for supporting the flywheel.

Abstract: A generator for a wind power installation for generating electrical energy from kinetic energy comprises an outer peripheral surface portion, the outer peripheral surface portion having: an incident-flow surface portion against which wind flows in an incident-flow direction in the installed state of the generator, the incident-flow surface portion extending along an axial direction and orthogonally thereto along a peripheral direction, and a cooling surface portion, designed for cooling the generator and disposed downstream of the incident-flow surface portion in the installed state in the incident-flow direction, the cooling surface portion extending along an axial direction and orthogonally thereto along a peripheral direction, wherein one or more vortex generators for passive cooling of the generator are arranged in a region of the outer peripheral surface portion, in particular in a region of the incident-flow surface portion and/or in a region of the cooling surface portion.

Abstract: The present invention provides a to method for reinforcing a wind turbine blade, such as a root end. The root end comprises a first and a second bushing for attaching the wind turbine blade to a wind turbine hub, the bushings being located between an inner sidewall of the root end and an outer sidewall of the root end, the bushings being separated by retaining material, the method comprising forming a first injection channel in the retaining material; forming a first pressure release channel in the first retaining material, wherein the first pressure release channel is formed to be in fluid communication with the first injection channel in a region between the inner sidewall and the outer sidewall; and injecting adhesive material into the first injection channel at least until adhesive material enters the formed first pressure release channel. The invention also provides a wind turbine blade having a root end that has been reinforced using such a method. Further aspects are provided.

Abstract: A fluid flow turbine blade assembly for a turbine rotor includes a blade and a deflector extending spanwise along at least a portion of the blade. At least a portion of an upstream surface of the deflector, along at least a portion of a span of the deflector, has a concave shape in a chordwise direction such that at least a portion of a chord line between leading and trailing edges of the deflector is disposed outside a profile defined between the upstream surface and a downstream surface of the deflector. The deflector has a substantially uniform thickness or a chord-wise varying thickness between the upstream surface and the downstream surface. The deflector alters fluid flow over the blade so as to increase the blade's contribution to global torque generated by the assembly so that, with the deflector's torque contribution, the global torque of the assembly is greater than the global torque that would be generated by the blade alone without the benefit of the deflector.

Abstract: A nacelle for a wind turbine includes a nacelle roof and a first wind turbine component, wherein the nacelle roof is configured to cover the first wind turbine component, the nacelle roof including a first sliding section and a second sliding section, wherein the first sliding section and/or the second sliding section is configured to slide over at least a part of the surface of the nacelle roof, wherein the first sliding section and the second sliding section are moveable between a closed position, in which the first wind turbine component is covered by the nacelle roof, and an opened position, resulting in an opening of the nacelle roof through which the first wind turbine component is hoisted.

Abstract: An approach for adjusting the inclination of a solar panel and the pitch of one or more micro-turbines to maximize power output. The approach predicts wind velocity at a small opening of an inclined solar panel wherein a plurality of micro-turbines is located. The approach predicts solar irradiance striking the inclined solar panel. The approach calculates an optimal solar panel inclination angle and micro-turbine pitch based on maximizing power output. The approach adjusts the solar panel inclination angle and micro-turbine pitch based on the calculation.

Abstract: A method (200) for controlling a wind turbine (100) with a rotor having at least one rotor blade (17), the method comprising: measuring (210) a strain of the at least one rotor blade; changing (220) a pitch angle of the at least one rotor blade based at least partially on the measured strain of the at least one rotor blade; whereby the measurement of the strain of the at least one rotor blade measures at least one strain in the area of a blade root of the rotor blade (17).

Abstract: A method for damping oscillations in a tower of a wind turbine includes determining a primary rotational frequency of the rotor (fp) that correlates to a tower resonance frequency (fr). The method defines an exclusion zone between a first rotational frequency of the rotor (f1) that is less than the primary rotational frequency (fp) and a second rotational frequency of the rotor (f2) that is greater than the primary rotational frequency (fp). At rotor frequencies below the exclusion zone, a first tower-damping force strategy is applied. At rotor frequencies above the exclusion zone, a second tower-damping force strategy is applied that is different from the first tower-damping force strategy.

Abstract: An apparatus is for performing parts of an operation to install a wind turbine, wherein the wind turbine has a tower, wherein i) the tower has a plurality of sections of the tower; ii) installation of the tower includes stacking the sections; iii) during the installation the tower has an installed part of the tower and sections of the tower yet to be installed; and iv) the installed part of the tower includes one or more installed sections of the tower. The apparatus comprises a travelling car for being selectively raised or lowered along the tower and a device for selectively raising or lowering the travelling car. The device for selectively raising or lowering the travelling car is arranged to connect the travelling car to an uppermost installed section of the tower.

Abstract: An apparatus is for performing a part of an operation to install a tower for a wind turbine, wherein the wind turbine has a tower, wherein the apparatus has a travelling car for travelling up and down along the tower of the wind turbine and for carrying an item to be installed as part of the wind turbine, wherein the travelling car has a device for balancing the travelling car, and wherein the device for balancing the travelling car has a weight configured to be movably connected to the travelling car i) for allowing keeping the travelling car balanced under exposure to a force or ii) for avoiding, correcting or reducing a shift in a centre of gravity of the travelling car. Further is disclosed a method of balancing a travelling car for an apparatus for performing at least a part of an operation to install a wind turbine.

Abstract: The present invention relates to a wind apparatus to maximize the amount of kinetic energy associated with an air flow captured over time by said wind apparatus. In particular, said wind apparatus comprises at least one wind system, wherein said wind system comprises at least one a bladed device provided with one or more blades and configured to be electronically controlled so that its aerodynamic behaviour changes over time based on the action exerted by said air flow on said one or more blades of said bladed device.

Abstract: Offshore equipment destruction apparatus comprising: a secure enclosure (9) for housing equipment (10), an initiator (12) for triggering a destruction means (14) located within the enclosure (9) to render at least part of the equipment (10) unusable. A security controller (11) automatically controls the initiator (12) to trigger the destruction means (14) in response to the identification of an unauthorised attempt to access the enclosure (9).

Abstract: The present invention relates to a method of manufacturing a wind turbine blade shell component (38), the method comprising the steps of providing a plurality of abraded pultrusion plates (64) having abraded edges, arranging the abraded pultrusion plates (64) in layers on blade shell material (89) in a mould (77) for the blade shell component, the layers being separated by electrically conductive interlayers, and bonding the abraded pultrusion plates (64) with the blade shell material to form the blade shell component, wherein each pultrusion plate (64) is formed of a pultrusion fibre material comprising glass fibres and carbon fibres. The invention also relates to a reinforcing structure for a wind turbine blade, the reinforcing structure comprising a plurality of pultrusion plates according to the present invention.

Abstract: A wind turbine (10) includes a nacelle (14) with a longitudinal axis (LA) aligned with the flow of the incoming wind during operation. When so aligned, the nacelle defines a longitudinal direction (X). The wind turbine (10) includes one or more heat-generating components (22) and a modular cooler (24) operatively coupled to the one or more heat-generating components (22). The modular cooler (24) includes one or more cooling modules (30) with each including one or more cooling units (32). Each cooling unit (32) includes a heat exchanger (40) defining a cooling area (38), which defines a normal axis (NA) and a deflector plate (42) to divert the flow of the incoming wind by an angle less than 180° relative to the longitudinal direction (X). Each cooling unit (32) is oriented such that the normal axis (NA) is non-parallel to the longitudinal axis (LA). The modular cooler (24) is scalable in multiple dimensions to increase the cooling capacity of the cooler (24).

Abstract: A method for connecting a component of a power conversion circuit of a wind turbine to one or more connection device(s) is/are provided, wherein the component is arranged on a supporting structure in the interior of the wind turbine, wherein the connection devices(s) includes/include at least one connector and the component includes at least one counterpart to the connector, comprising: providing the connection device(s) and lifting the component from the supporting structure, arranging the connection device(s) on the supporting structure and aligning the connector of the connection device(s) with respect to the counterpart at the lifted component, and lowering the component onto the supporting structure and thereby establishing a connection between the connector and the counterpart for connecting the component to the connection device(s).

Abstract: An assembly of a number of reservoirs stacked in a helix shape and filled with certain volume of a fluid is made to rotate continuously by the effect of gravity, where each reservoir has a special geometric shape and design where in the stacked helix of reservoirs the plurality of the torque values due to gravity on one side of the rotation axis is greater than the plurality of the torque values due to gravity on the other side of the rotation axis, resulting in a continuous rotation.

Abstract: A human powered electricity generation device, comprising: a mechanism for receiving energy provided by a user; a first generator for receiving the energy provided by the user from the mechanism and generating electricity power; a power meter for measuring the electricity power generated by the first generator to be transmitted to an electricity power grid; an input device for receiving an identity of the user; and a processor, configured for following: receiving the identity of the user from the input device before the power meter measuring the generated electricity power; receiving information of the measured electricity power from the power meter; and outputting the information of the measured electricity power associated with the identity.

Abstract: The present invention relates to a wheel generator, namely a converter for obtaining electrical energy in a rolling wheel of a vehicle from the deformation of the wheel tire due to contact with the road surface, a system for obtaining electrical energy including the converter, as well as a vehicle or wheel including the system.

Abstract: A linear compressor includes a frame, a cylinder disposed in the frame, a piston configured to axially reciprocate in the piston, a discharge valve disposed at a front of the piston, and a discharge cover assembly coupled to the frame and disposed at the front of the piston. The discharge cover assembly includes a discharge cover including an inner space, a first discharge plenum that is disposed in the inner space of the discharge cover and defines a first discharge space inside the first discharge plenum, and a second discharge plenum disposed between the first discharge plenum and the discharge cover. The second discharge plenum defines a second discharge space in fluid communication with the first discharge space and a third discharge space in fluid communication with the second discharge space between the first discharge plenum and the second discharge plenum.

Abstract: A sealing assembly for a fluid end of a reciprocating pump is installable within a segment of a casing of the fluid end and is arranged to form a seal with the segment. The sealing assembly includes a closure element and a seal element. The closure element has a sealing portion with a lateral surface that faces an interior wall of the segment of the fluid end. The seal element is sized to be installed around the closure element and includes a seal and one or more seal carriers. The seal is configured to form a seal between the lateral surface of the closure element and the interior wall of the segment. The one or more seal carriers are configured to position the seal with respect to the closure element.

Abstract: Linear peristaltic pumps for use with fluidic cartridges. An apparatus includes a reagent cartridge configured to be received within a cartridge receptacle of a system. The reagent cartridge includes a reagent reservoir and a body including a surface that forms depressions. Each depression has a fluid inlet and a fluid outlet and is fluidly coupled to at least one other depression. The reagent cartridge also includes a deformable material coupled to the surface of the body and includes portions. Each portion covers one of the depressions to define chambers. The portions of the deformable material are movable relative to the depressions between a first position outside of a dimensional envelope of the body and a second position within the dimensional envelope of the body.

Abstract: A pump for use with a tube, having a rotor having an axis of rotation and a plurality of rollers configured to define an orbital path about the axis of rotation, the orbital path defined by a radius, and a roller bed having a surface adapted to support the tube for peristaltic compression by one or more rollers, wherein the surface has a predetermined profile comprising a circular arc segment and at least one side segment, the arc segment having a first curvature defined by the radius, and the at least one side segment having a second curvature lesser than the first curvature.

Abstract: An oil well pump system includes a programmable control module configured to be coupled to a fuel injector coupled to a prime mover engine. The programmable control module is configured to cause the fuel injector and engine to operate in a 350-500 RPM range. A generator is configured to be coupled to the engine, the generator is configured to operate in a 350-500 RPM range and configured to be coupled to the programmable control module and the fuel injector and configured to supply sufficient power to operate the programmable control module and the fuel injector.

Abstract: Described herein are embodiments of systems, apparatuses, and methods that include a center rod plunger, wherein movement of the center rod between an open and a closed position is at least partially controlled by a clutch. The center rod has a shaft whose diameter may vary such that the clutch imparts a corresponding varying degree of friction on the center rod and such that less friction is imparted when the center rod is in its open and/or closed position.

Abstract: Provided is a method for continuing the operation of an electric compressor even if the magnitude of ripple voltage exceeds a predetermined threshold value. A control device of an electric compressor is provided with: a detection unit for detecting the ripple voltage of the electric compressor which is driven by a battery; a determination unit for determining whether or not the value of the ripple voltage is greater than or equal to a predetermined threshold value; and a control unit for reducing the rotation speed of a motor of the electric compressor down to a predetermined first target rotation speed greater than 0 when the value is greater than or equal to the threshold value.

Abstract: A liquid dispenser comprising a liquid pump. The liquid pump comprises a first liquid inlet configured to allow the introduction of a first liquid into a mixing chamber; a second liquid inlet configured to allow the introduction of a second liquid into the mixing chamber; an outlet valve configured to regulate the release of a mixed liquid from the mixing chamber, the mixed liquid being a blend of the first liquid and the second liquid; and a reciprocating member configured to effect a reciprocating movement along a longitudinal axis, the reciprocating member being configured to regulate the aperture of the outlet valve. The liquid dispenser comprises a piezoelectric detector arranged in such a way that when the liquid pump generates a shockwave, the shockwave is detected by the piezoelectric detector, the piezoelectric detector generating a voltage peak which is a function of the shockwave.

Abstract: The present invention relates to an axial piston pump (1) of the rotating inclined plate type for pumping a liquid comprising: a head (25), a plurality of cylinders (30) made in the head (25) in a number greater than two, having axes (C) parallel to each other and the cylinders being arranged radially around a common axis (A) parallel to the axes of the cylinders, a plurality of pistons (75), each slidingly inserted within a respective cyl-inder (30) of the plurality of cylinders (30) for the pumping of the liquid, and a plurality of delivery ducts (145) made in the head (25), each of which runs directly from a re-spective cylinder (30) to a respective delivery valve (120) and is arranged transversely to the axis (C) of the respective cylinder.

Abstract: A bearing system for a compressor including an unloader at least partially received within a recess of a driveshaft. The unloader includes an outer surface that is engaged with a bearing. An inner surface of the unloader is curved such that the unloader is pivotable relative to the driveshaft unload forces on bearing caused by deflection of the driveshaft.

Abstract: A scroll compressor is provided that may include a block insertion groove configured to accommodate a discharge port and at least one bypass hole disposed in a rear surface of a non-orbiting end plate of a non-orbiting scroll, and a retainer block including at least one bypass valve configured to open or close the at least one bypass hole inserted into the block insertion groove. The at least one bypass hole may include a first bypass hole and a second bypass hole. The at least one bypass valve may include a first bypass valve configured to open or close the first bypass hole and a second bypass valve configured to open or close the second bypass hole, and may be disposed between the block insertion groove and the retainer block facing the block insertion groove. Accordingly, the first and second bypass valves that suppress or prevent overcompression in a compression chamber are not fastened to the non-orbiting end plate, which may allow the non-orbiting end plate to be made thin.

Abstract: A scroll compressor for generating oil-free compressed air, in particular for a compressed air brake system of a lorry, with a drive which is arranged in a housing and is connected to an orbiting displacer scroll which has a displacer scroll bottom and a displacer scroll. The displacer scroll wall engages into a stationary mating scroll, with the result that at least one variable compression chamber is formed between the displacer scroll and the mating scroll. A seal element is provided between the displacer scroll and the housing wherein the seal element is fastened in the displacer scroll bottom and seals against a sliding plate which is connected fixedly to the housing. A compressed air brake system with a scroll compressor of this type.