Abstract: A base of a case has an inner groove portion, which surrounds a circuit board, and an outer groove portion. A first projected portion of a connector is inserted in the inner groove portion via a first seal portion. A second projected portion of the connector is inserted in the outer groove portion via a second seal portion. The first seal portion and the second seal portion are formed of the same material and are interposed between a periphery of an opening of the case and the connector. The first seal portion in the inner groove portion is in contact with the first projected portion of the connector to water tightly seal an accommodation space formed in the case. The second seal portion in the outer groove portion is in contact with the second projected portion of the connector to restrict vibration of the connector.

Abstract: In a variable valve actuation apparatus for an internal combustion engine, a rotor of a variable valve timing mechanism is fixed to one end of a camshaft by a plurality of bolts. An oil control valve configured to control hydraulic pressure that acts on the rotor is fixed to the rotor by one or some of the plurality of bolts. For this reason, by releasing fastening of the bolt that fixes the oil control valve to the rotor among the plurality of bolts that fix the rotor to the one end of the camshaft, the oil control valve is allowed to be removed from the rotor while the rotor is fixed to the camshaft. Therefore, it is not required to perform positioning for fixing the rotor to the camshaft at the time of replacement of the oil control valve.

Abstract: A camshaft phaser having a central bolt is provided. The camshaft phaser includes: a stator and a rotor which is connected with a camshaft in a torsion-resistant manner and accommodated in the stator; a front cover and a rear cover respectively set at a front side and a back side of the stator; and a compression spring having a first end buckled with the front cover, and a second end fixed to the rotor, wherein the central bolt is installed inside the camshaft phaser through an opening set on the front cover, and the central bolt is configured with a guide part which is adapted for pushing the compression spring to an accurate position. Therefore, a supporting apparatus for supporting the spring is no longer required to be configured in the camshaft phaser, structure of the camshaft phaser is optimized, and manufacturing cost of the camshaft phaser is reduced.

Abstract: A valve opening and closing timing control apparatus includes a drive-side rotational member rotating synchronously with a crankshaft, a driven-side rotational member arranged at an inner side of the drive-side rotational member to be coaxial with and relatively rotatable to the drive-side rotational member, an adapter arranged between the driven-side rotational member and a camshaft in a state being coaxial with the driven-side rotational member, a fixing member arranged coaxially with the camshaft and integrally fixing the driven-side rotational member and the camshaft in a state where the adapter is disposed between the driven-side rotational member and the camshaft, and a phase change mechanism including a portion which is press-fitted to the fixing member in a coaxial manner, the driven-side rotational member being fixed to the adapter in a state where a clearance is provided between the driven-side rotational member and the adapter in a radial direction.

Abstract: A base includes first to third projected portions. A sealing surface of the base is opposed to the housing and equipped with a sealing member. An attachment portion outside the sealing surface is screwed with the housing. A first projected portion projects from the attachment portion toward the housing. The second and third projected portions project relative to the sealing surface toward the housing. A recessed portion between the sealing surface and the first projected portion partially receives and fitted with a spigot protrusion of the housing. The second projected portion is located inside the third projected portion, and the third projected portion is located inside the recessed portion in the radial direction. The second and third projected portions extend along the circumferential direction. The first to third projected portions have projected tip end surfaces located in a same plane and in contact with the housing.

Abstract: A valve timing controller includes: an outer rotor; an inner rotor relatively rotating inside of the outer rotor; a torsion coil spring having a fixed end connected with the inner rotor, and a free end connected with the outer rotor; and a bush rotor coaxially projected from the outer rotor or the inner rotor to support the torsion coil spring in a radial direction. The torsion coil spring biases the inner rotor while being connected with the outer rotor by being torsionally deformed according to a relative rotation of the inner rotor to the outer rotor. A load acting from a first turn of the torsion coil spring adjacent to the free end is smaller than a load acting from a wound part of the torsion coil spring between the first turn and the fixed end.

Abstract: A valve opening and closing timing control apparatus includes a driven-side rotational member connected to a camshaft by a mounting member, a spool movably provided at an inner portion of a tubular wall portion of the mounting member, a first flow passage connecting a first port of the tubular wall portion and the advanced angle chamber to each other and a second flow passage connecting a second port of the tubular wall portion and the retarded angle chamber to each other, the first flow passage and the second flow passage being provided at the driven-side rotational member. A thermal expansion coefficient of a material forming the driven-side rotational member is greater than a thermal expansion coefficient of a material forming the mounting member.

Abstract: The valve opening/closing timing control device includes: a driving rotating body; a driven rotating body; a fixed shaft portion; a fluid pressure chamber; a partitioning portion; and a phase control unit for controlling a rotation phase by supplying/discharging pressurized fluid to/from an advancing chamber or a retarding chamber via an inside of the fixed shaft portion. The driven rotating body has: an inner circumferential member with a cylindrical portion, and a coupling plate portion of the camshaft, the cylindrical portion and the coupling plate portion being integrated with each other; and an outer circumferential member provided with the partitioning portion. The outer circumferential member includes the inner circumferential member in a unified manner so as to have the same rotational axis. The inner circumferential member is formed with an iron-based material. The outer circumferential member is formed with a material that is lighter in weight than the iron-based material.

Abstract: A method for operating a camshaft adjuster, which includes an adjusting transmission with an input shaft, an output shaft connected in a non-rotatable manner with a camshaft, and an adjusting shaft, whereby the adjusting shaft is driven by an actuator, characterized by the fact that the actuator drives the adjusting shaft by overcoming a torque that is dependent on its angular position.

Abstract: A camshaft phaser, including: a drive sprocket; a phaser section including a rotor with a first radially aligned channels, first axially aligned channels connected to the first radially aligned channels, and chambers formed by the rotor and a stator; and a rotor nose separately formed from the phaser section and non-rotatably connected to the phaser section, extending past a front side of the phaser section in an axial direction, and including second radially aligned channels and second axially aligned channels connected to the second radially aligned channels and the first axially aligned channels. The second radially aligned channels are arranged to receive fluid for the plurality of chambers to phase the phaser. The first radially aligned channels and the first and second axially aligned channels form respective flow paths for the fluid from the second radially aligned channels to the plurality of chambers.

Abstract: A continuous variable valve duration apparatus may include a camshaft, a first cam portion and a second cam portion of which a cam is formed thereto respectively, of which the camshaft is inserted thereto, of which relative phase angles with respect to the camshaft are variable, and the first and second cam portions disposed on one cylinder and the next cylinder respectively, a first inner bracket and a second inner bracket transmitting rotation of the camshaft to the first and second cam portions respectively, a slider housing of which the first and second inner brackets are rotatably inserted thereto and of which relative position with respect to the camshaft is variable and a control portion selectively changing the relative position of the slider housing.

Abstract: A camshaft adjustment device comprising an electromagnetic actuator (3) having an armature that can be adjusted axially along an adjustment axis (5) for actuating a hydraulic valve for camshaft adjustment, and fastening means for fastening the actuator (3) on an engine element (3), wherein the fastening means comprise spring means (12), which tension the actuator (3) against the engine element (2) in a securing position (13), wherein the fastening means have positive-fitting means (8) as an anti-twist device for preventing a twisting movement of the actuator (3) in an installation position (7) relatively to the engine element (2), which are constructed and arranged in such a manner that the actuator (3) can be moved to the engine element (2) by means of a pure translational installation movement and wherein the spring means (12) in the securing position (13) bar a de-installation path for a purely translational de-installation movement of the actuator (3) opposite to the installation movement in such a manner

Abstract: A central valve (1) for a camshaft adjusting device including a control piston (2) having a first (3) and a second (4) control edge which enclose a first annular groove (6), including a valve housing (26), on the peripheral wall of which openings (14, 15, 16, 17, 18) are disposed, and including pressure medium paths extending between a feed connection and a discharge connection P, T of which the adjustable configuration is predetermined by the control edge geometry and the arrangement of the openings (14, 15, 16, 17, 18) and the adjusted configuration is dependent upon the relative axial position of the control piston (2).

Abstract: A sprocket plate, which is rotated synchronously with a crankshaft, includes a tapered hole portion. A shoe housing, which stops rotation of an inner rotor, includes a press fitting hole portion, which extends straight and into which a positioning member is press fitted. The positioning member includes: a contacting distal end portion that is inserted into the tapered hole portion in an axial direction and contacts an inner peripheral surface of the tapered hole portion at a specific side; a main shaft portion that extends straight in the axial direction and is press fitted into the press fitting hole portion in the axial direction; and a loosely inserting shaft portion that is formed between the contacting distal end portion and the main shaft portion and is loosely inserted into the press fitting hole portion in the axial direction.

Abstract: A continuously variable valve lift apparatus may include a camshaft, a cam portion of which a cam is formed thereto and the camshaft is inserted into therein, a slider housing of which the cam portion is rotatably inserted therein, of which a position with respect to the camshaft is movable and of which a guide slot is formed thereto, a control portion selectively changing the position of the slider housing, a guide shaft disposed parallel to the camshaft and inserted into the guide slot for guiding movement of the slider housing, an output portion rotatable around a pivot shaft and of which a valve shoe is formed thereto and a valve unit driven by the valve shoe.

Abstract: A Continuous Variable Valve Timing (CVVT) apparatus for an engine may include a housing, a rotor disposed to be rotatable relative to the housing, a locking pin passing through a facing relatively rotating surface between the housing and the rotor by elastic force so as to restrict rotation of the rotor relative to the housing by linear movement, and an oil control valve disposed such that oil is supplied to an advance chamber and a delay chamber provided between the rotor and the housing, in which, when a control duty value applied to the oil control valve is “0”, the oil control valve is fixed in a state in which the oil is supplied to the advance chamber.

Abstract: A continuously variable valve lift apparatus may include a camshaft, a cam portion on which a cam is formed and into which the camshaft is inserted, a slider housing into which the cam portion is rotatably inserted and of which a position is rotatable around a pivot shaft, a control portion engaged with the slider housing and configured to selectively rotate the slider housing around the pivot shaft, an output portion rotatable around the pivot shaft, contacting the cam and onto which a valve shoe is formed, and a valve device contacting the valve shoe and driven by rotation of the cam.

Abstract: A camshaft phaser, including: a stator including radially inwardly extending protrusions with radially outermost ends; a rotor including radially outwardly extending protrusions radially outermost ends; chambers at least partially bounded by a inwardly extending protrusion and an outwardly extending protrusion; first seals disposed in the radially innermost ends and facing the rotor; second seals disposed in the radially outermost ends and facing the stator; first and second wedge plates radially disposed between the rotor and the stator; and a displacement assembly arranged to for an advance mode, displace the first wedge plate to enable rotation of the rotor, with respect to the stator, in the first circumferential direction and for a retard mode, displace the second wedge plate to enable rotation of the rotor, with respect to the stator, in a second circumferential direction opposite the first circumferential direction.

Abstract: A camshaft phaser, including: a stator; a rotor including a first channel and a second channel and connectable to a camshaft a first wedge plate and a second wedge plate; and a displacement assembly including a first pin in the first channel and a second pin in the second channel. For an advance mode: fluid displaces the first pin to displace the first wedge plate to enable rotation of the rotor, with respect to the stator, in a first direction; and the second wedge plate blocks rotation of the rotor, with respect to the stator, in a second direction. For a retard mode: fluid displaces the second pin to displace the second wedge plate to enable rotation of the rotor, with respect to the stator, in a second direction; and the first wedge plate blocks rotation of the rotor, with respect to the stator, in the first direction.

Abstract: A continuous variable valve duration apparatus may include a camshaft, first and second cam portions, of which the camshaft is inserted thereto, of which relative phase angles with respect to the camshaft are variable, a first and a second inner brackets transmitting rotation of the camshaft to the first and second cam portions respectively, a slider housing of which the first and second inner brackets are rotatably inserted thereto, of which relative position with respect to the camshaft is variable and of which a guide protruded portion is formed to an upper side thereof, cam caps of which each cam cap engaging portion is rotatably connected thereto, a connecting bracket connecting the cam caps and of which a guide slot for the guide protruded portion to be inserted thereto is formed thereto and a control portion selectively changing a position of the slider housing.

Abstract: A continuous variable valve timing apparatus for an engine includes: a housing, a rotor installed to be rotatable relative to the housing and connected to a camshaft, a locking pin configured to restrict rotation of the rotor relative to the housing when pushed by an elastic force to move linearly and pass through a relatively rotating surface between the housing and the rotor, an elastic member installed to provide the elastic force, a valve bolt coupled to the camshaft through the housing and the rotor, wherein the valve bolt includes a release passage through which a release pressure provided through the camshaft is transferred to the locking pin via the rotor, and a valve means for selectively blocking or unblocking the release passage, and an actuator installed to actuate the valve means of the valve bolt according to an actuation displacement.

Abstract: A valve timing adjusting device includes a housing, a vane rotor, a sleeve, and a spool. The housing includes a timing pulley connected to a crank shaft through a dry belt, and rotates in association with the crank shaft. The sleeve includes a supply port, a drain port, a first control port, a second control port, and a first drain oil channel. The spool includes an oil connection channel that is arranged at an axial center portion of the spool and controls the supply port to be connected with the first control port or the second control port depending on an axial-direction position. The drain port is connected with a first drain space through a second drain oil channel. A second drain space is connected with the first drain space through a third drain oil channel that is provided to span the vane rotor and the cam shaft.

Abstract: A valve timing controller includes a first housing; a second housing fixed to the first housing; a driven rotor inside of a driving rotor defined by the first housing and the second housing; a revolving actuator disposed on an extension of an axial direction of the driven rotor; a deceleration mechanism; and an engaging part that is engaged with a lock jig locking a relative rotation between the driving rotor and an input rotor of the deceleration mechanism in advance of assembling the valve timing controller to an internal-combustion engine. The engaging part is located on a radially inner side compared with an insertion part of the revolving actuator inserted in a hole of a cover component of the internal-combustion engine.

Abstract: A valve timing controller includes a driving rotor, a driven rotor, a planetary rotor, a planetary carrier, and an elastic component to produce a restoring force biasing the planetary rotor to an eccentric side such that the driving rotor is inclined to the driven rotor. The driving rotor has an inclination angle ?1 relative to the driven rotor in a first inclination state where the driving rotor is in contact with the driven rotor on both sides in the axial direction. The inclination angle ?1 is smaller than an inclination angle ?2 in a second inclination state where the driving rotor is in contact with the driven rotor on both sides in the radial direction, and is smaller than an inclination angle ?3 in a third inclination state where the driving rotor is in contact with the camshaft on both sides in the radial direction.

Abstract: A sensor support structure includes a connection portion positioned in the cylinder head cover of an internal combustion engine from an outer surface of the cylinder head cover to a position where the connection portion comes in contact with a cylinder head of the internal combustion engine, an arm portion extending from an outer end side of the connection portion toward an outer side of the connection portion in a radial direction, a sensor support portion provided at an extending end of the arm portion, the sensor support portion being formed to protrude in a direction away from a side where the cylinder head is positioned, the sensor support portion supporting a sensor that detects a rotation of a camshaft of the internal combustion engine; and a restriction portion restricting a movement of the arm portion relative to the cylinder head cover in a circumferential direction about the connection portion.

Abstract: The valve opening/closing timing control device includes: the driving rotating body; the driven rotating body; an advancing chamber and a retarding chamber formed by partitioning a fluid pressure chamber between the driving and driven rotating bodies; and a phase control unit supplying pressurized fluid to the advancing or retarding chamber via an advancing channel or a retarding channel penetrating through the driven rotating body. In the driven rotating body, an outer circumferential member and an inner circumferential member are formed integrally/coaxially with each other. The advancing and retarding channel form a predetermined angle. Between every pair of an advancing channel and a retarding channel, a groove portion is formed in one of an inner circumferential surface of the outer circumferential member and an outer circumferential surface of the inner circumferential member, and an elongated protruding portion is formed on the other, at a position that corresponds to the groove portion.

Abstract: A food processing apparatus has a frame assembly in which frame members are joined using adhesive, such as an epoxy. The frame members are comprised of stainless steel and the adhesive is applied so that exterior surfaces of the stainless steel frame members are free of any adhesive residue. Adhesive may be used to join exterior frame members as well as interior frame members, such as those used to support mechanical components of the processing apparatus.

Abstract: A variable valve timing control device has, as control modes for adjusting inflow and outflow of oil with an OCV, a lock mode for moving a lock pin in a locking direction, a phase control mode for controlling a camshaft phase by a target phase in accordance with an operation state of an engine, and an oil filling mode for filling an advancement chamber and a retardation chamber with the oil in a state that the lock pin moves in the locking direction, before shifting from the lock mode to the phase control mode. When the oil filling mode has been selected, a target position of a spool is set based on viscosity of the oil, and the position of the spool is controlled so as to be the set target position.

Abstract: Methods and systems are described for an engine with a cam torque actuated variable cam timing phaser. Phaser positioning control is improved by reducing inaccuracies resulting from inadvertent spool valve and/or phaser movement when the spool valve is commanded between regions. In addition, improved spool valve mapping is used to render phaser commands more consistent and robust.

Abstract: A camshaft adjusting device having improved lubricant management including adjusting gearing for adjusting the angular position of a camshaft is proposed, the adjusting gearing having an input shaft, which can be coupled to a crankshaft, an output shaft, which can be coupled to the camshaft and an adjusting shaft, which can be coupled to an actuator. The adjusting gearing defines a rotational axis and the gearing forms a gearing interior, in which the input shaft, the output shaft and the adjusting shaft are operatively interconnected. The camshaft adjusting device has a lubricant supply for supplying the gearing interior with a lubricant and the lubricant supply is designed to form a lubricant sump in the gearing interior, the sump being radially outwards situated relative to the rotational axis.

Abstract: A camshaft phaser has a stator configured to be non-rotatably connected to a drive sprocket and a rotor at least partially rotatable with respect to the stator and configured to be non-rotatably connected to a camshaft. The rotor has an aperture extending in a direction parallel to an axis of rotation. The camshaft phaser further has a support member including a bushing including an elongated portion, a flange, and a through-bore extending through the elongated portion and the flange, and a cylindrical pin disposed in the through-bore and the aperture. The camshaft phaser also has a positioning spring engaged with the support member and the stator to bias the rotor in a circumferential direction.

Abstract: A multi-part rotor (1) for a hydraulic camshaft adjuster, including two partial rotor members (2) which rest against each other along a separation plane (3) extending perpendicular to the axial direction and which jointly define hydraulic medium ducts (4) extending within said separation plane (3) and, including an additional rotor member (5) that conducts hydraulic medium from opposite axial directions in a targeted manner to different hydraulic medium ducts (4). The additional rotor member (5) or at least one positively engaging anti-twist element (6) is secured to one or both partial rotor members (2) for conjoint rotation therewith.

Abstract: The invention relates to a control device for a multi-cylinder engine provided with an oil pump, a hydraulically operated valve characteristic control device which changes valve characteristics of at least one of an intake valve and an exhaust valve; and a hydraulically operated valve stop device which stops at least one of the intake valve and the exhaust valve when a reduced cylinder operation is performed. The control device for a multi-cylinder engine is provided with a valve control unit which operates the valve stop device after an operation of the valve characteristic control device is completed when the valve characteristic control device is operated at a time of request for the reduced cylinder operation.

Abstract: When a lock demand of a camshaft phase occurs, a control mode of a hydraulic control valve is switched to a locking mode after the camshaft phase is controlled to a lock phase, and a lock pin is moved to a lock position. The camshaft phase is locked at the lock phase, and timing advance and timing retard chambers communicate with each other through a back space. In this state, a locking time filling control is executed. In the locking time filling control, the control mode of a hydraulic control valve is switched to a filling mode, the hydraulic oil is supplied to a timing advance chamber, both of the timing advance chamber and the timing retard chamber are filled with the hydraulic oil, the back space is filled with the hydraulic oil, and thereafter the control mode of the hydraulic control valve is returned to the locking mode.

Abstract: A camshaft phaser includes an input member an output member defining an advance chamber and a retard chamber; a valve spool having a valve spool bore; a first recirculation check valve and a second recirculation check valve disposed within the valve spool bore; and a biasing member which biases the first recirculation check valve and the second recirculation check valve away from each other. The first recirculation check valve allows oil to pass from the advance chamber to the retard chamber and prevents oil from passing from the retard chamber to the advance chamber when the valve spool is in a retard position. The second recirculation check valve allows oil to pass from the retard chamber to the advance chamber and prevents oil from passing from the advance chamber to the retard chamber when the valve spool is in an advance position.

Abstract: A system includes a camshaft disposed along an axis from a drive end to a opposite end, and the camshaft includes a plurality of journals configured to support the camshaft and is spaced along the axis. The camshaft includes a plurality of cams spaced along the axis, and is disposed along the camshaft in sets, where each set is disposed between a respective pair of journals of the plurality of journals. The camshaft includes a plurality of mass portions, where each mass portion is disposed between a set of cams and a respective journal. The plurality of mass portions is disposed along the camshaft such that a center of mass of the plurality of mass portions is nearer to the drive end than to the opposite end, and the plurality of mass portions is configured to increase a natural frequency of the shaft.

Abstract: An engine variable camshaft timing phaser (10) includes a sprocket (12) and a planetary gear assembly (14). The sprocket (12) receives rotational drive input from an engine crankshaft. The planetary gear assembly (14) includes two or more ring gears (26, 28), multiple planet gears (24), a sun gear (22), and a wrap spring (76). One of the ring gears (26, 28) receives rotational drive input from the sprocket (12) and one of the ring gears (26, 28) transmits rotational drive output to an engine camshaft. The sun gear (22) engages with the planet gears (24). The wrap spring (76) experiences expansion and contraction exertions to permit advancing and retarding engine valve opening and closing, and to prevent advancing and retarding engine valve opening and closing.

Abstract: A camshaft phaser, including: an inner rotor with radially outwardly extending vanes which is connected to the inner camshaft; a stator having radially inwardly directed projections which contact the outer surface of the rotor and form working spaces into which the vanes extend, the vanes divide the working spaces into first and second sets of pressure chambers which can be pressurized with a hydraulic medium in order to rotate the rotor in an advancing or retarding direction; a front cover connected to a front side of the assembly defining a front side of the pressure chambers; and a rear cover connected to the rear side of the assembly defining a rear side of the pressure chambers, having first and second protrusions directed toward and meshed with complementary first and second indentations on an outer camshaft.

Abstract: A control system for varying cylinder valve timing of an internal combustion engine is provided. The control system includes a cam phase actuator having first and second actuator ports to adjust a rotational phase of a camshaft relative to a crankshaft, a first control valve, a second control valve, and a dynamic regeneration valve. In one embodiment, the dynamic regeneration valve is configured to enable the cam phase actuator to switch between operating in an oil pressure actuated mode and a cam torque actuated mode when adjusting the rotational phase of the camshaft relative to the crankshaft.

Abstract: A camshaft phaser includes a stator; a rotor defining an advance chamber and a retard chamber with the stator; a valve spool that is rotatable about an axis and defining a supply chamber and a vent chamber with the rotor; an actuator which rotates the valve spool to change the position of the rotor relative to the stator by 1) supplying oil from the supply chamber to the advance chamber and venting oil from the retard chamber to the vent chamber and 2) supplying oil from the supply chamber to the retard chamber and venting oil from the advance chamber to the vent chamber; and a check valve which is displaceable axially between an open position which allows oil to flow from the vent chamber to the supply chamber and a closed position which prevents oil from flowing from the supply chamber to the vent chamber.

Abstract: A motor control apparatus for adjusting a cam phase includes a motor control part, which controls a current supplied to a stator coil by controlling plural switching elements forming an inverter to turn on and off. The motor control part stops the current supplied to the stator coil each time a motor rotates a predetermined rotation angle interval in a power generation control mode, in which a rotation torque is generated in a direction to impede the motor rotation. The motor control part maintains the power generation control mode when a rotation signal is determined as varying in a predetermined time period. The motor control part switches over an operation mode to a normal control mode to generate a rotation torque in a direction to promote the motor rotation when the rotation signal is determined as not varying in the predetermined time period.

Abstract: A method and apparatus for continually and rapidly adjusting the output torque of an engine according to a torque demand uses an active tappet to vary the instant air charge in a combustion chamber, so as to modulate engine torque during an automatic change of speed ratio. The invention allows substantially efficient combustion throughout the engine operating map. Various methods of changing the charge of air are disclosed.

Abstract: A camshaft phaser, including: an input component arranged to receive torque from an engine; an advance hub; an advance wedge plate radially disposed between the input component and the advance hub; and an actuation assembly including an advance pin arranged to be disposed in an advance channel for a camshaft and an actuator pin. For an advance mode: the actuator pin is arranged to radially displace the advance pin into non-rotatable connection with the advance hub; the advance hub is arranged to rotate, with respect to the input component, in a first circumferential direction; and the advance wedge plate is arranged to block rotation of the advance hub, with respect to the input component, in a second circumferential direction, opposite the first circumferential direction.

Abstract: An internal combustion engine includes a cylinder head, a crankshaft, intake and exhaust camshafts, first and second chain covers, a chain, and a fastening bolt. The first chain cover having a cutout includes a first flange positioned at a specific edge portion of the cutout, which is positioned between the crankshaft and the camshafts, and a first boss through which a shaft portion of the fastening bolt is passed. The cylinder head includes a second flange, and a second boss into which the shaft portion is inserted, and which is disposed coaxially with the first boss. The liquid gasket is held between the second flange and the first flange. A groove is provided in at least one of a position between the first flange and the first boss of the first chain cover and a position between the second flange and the second boss of the cylinder head.

Abstract: A valve opening/closing timing control device includes a driving rotating body that rotates in synchronization with a crankshaft, a driven rotating body that rotates integrally with a camshaft, a phase detection mechanism that detects the relative rotation phase of the driving rotating body and the driven rotating body, a retarding chamber and an advancing chamber between the driving rotating body and the driven rotating body, a lock mechanism capable of constraining the relative rotation phase to a lock phase, a supply/discharge mechanism that supplies/discharges working fluid to/from the advancing chamber, the retarding chamber, and the lock mechanism, and a control unit that controls operation of the supply/discharge mechanism. At startup of the engine, if the detected relative rotation phase is not at the lock phase, the control unit controls the supply/discharge mechanism so as to stop successive supply of working fluid to the retarding and advancing chambers.

Abstract: A hydraulic camshaft adjuster, including a rotor and a stator and a hydraulic medium management system, by which at least two chambers separated by a rotor-fixed vane can be or are connected to a hydraulic medium supply device and/or hydraulic medium discharge device by an interposed hydraulic valve, wherein the vane contains a switchable hydraulic medium control device designed for selective release and interruption of a fluid connection from one chamber to the other chamber. A locking device for excluding a rotational movement between the rotor and the stator locks the rotor to the stator in a vane position in which the volume of the two chambers is approximately equal, and includes a pin, interlockable with a stator-fixed component, designed to control the inflow and/or outflow of hydraulic medium to/from a chamber.

Abstract: A continuous variable valve duration apparatus includes a camshaft, a plurality of wheels mounted to the camshaft, of which a wheel key is formed thereto respectively, a plurality of cam portions of which a cam and a cam key are formed thereto respectively, of which the camshaft is inserted thereto, of which relative phase angle with respect to the camshaft is variable, a plurality of inner brackets connected with the each wheel key and the each cam key, a slider housing of which the each inner bracket is rotatably inserted thereto, and rotatably configured around a hinge bracket connected to a cylinder head and a control portion selectively moving the slider housings to change relative position of a rotation center of the inner brackets.

Abstract: A system and method is provided for an at least partially variable valve drive in an internal combustion engine. In one example, the at least partially variable valve drive comprises a hydraulically adjustable actuating device which may be charged with pressurized oil via an oil pressure line which branches off from an oil circuit.

Abstract: An engine that can implement cylinder deactivation (CDA) includes: a plurality of cylinders; a variable valve duration apparatus that is mounted in at least one of the plurality of cylinders and that performs a long duration mode and a short duration mode of an intake valve of a corresponding cylinder; a CDA apparatus that is mounted in at least another one of the plurality of cylinders and that performs a general operation mode and a CDA mode of an intake valve and an exhaust valve of a corresponding cylinder; and a controller that controls operation of the variable valve duration apparatus and the CDA apparatus according to an operation state of an engine, wherein the controller controls the variable valve duration apparatus to operate in a short duration mode, when the CDA apparatus operates in the CDA mode.

Abstract: A camshaft phaser, including: a housing; and a phase adjustment assembly including: first and second frusto-conical shaped surfaces arranged to non-rotatably connect to a camshaft, a first one-way clutch including a third frusto-conical shaped surface; a second one-way clutch including a fourth frusto-conical shaped surface; and a displacement assembly including: a first resilient element arranged to, for an advance mode, displace the first surface in a first axial direction to non-rotatably connect the first and third surfaces and enable the second surface to rotate with respect to the housing in a first circumferential direction; and a second resilient element arranged to, for a retard mode, displace the second surface in a second axial direction to non-rotatably connect the second and fourth surfaces and enable the first surface to rotate with respect to the housing in a second circumferential direction, opposite the first circumferential direction.