Abstract: The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (1) for the angular adjustment of the drive pinion relative to the shaft, two chambers (2, 3) that are alternately supplied with hydraulic fluid and a control valve (6) for actuating the adjusting element (1), said control valve being connected to the chambers (2, 3) of the adjusting element (1) through pressure medium channels (4, 5). The control valve (6) comprises a valve body (7) that has two working connections A and B for the pressure medium channels (4, 5), a delivery connection P for the supply of hydraulic fluid and a discharge connection T for the discharge of hydraulic fluid, and the control valve (6) further comprises a sliding valve control piston (8) for setting different hydraulic resistances W between the individual connections.

Abstract: A valve timing control device for an internal combustion engine, comprises a drive rotary member rotated by a crankshaft of the engine, a driven rotary member to rotate a camshaft of the engine upon rotation of the drive rotary member; a rotational phase control mechanism having an intermediate rotary member rotated relative to the drive and driven rotary members to cause relative rotation between the drive and driven rotary members and an braking mechanism having a hysteresis brake that generates a braking force to cause the intermediate rotary member to rotate relative to the drive and driven rotary members.

Abstract: A camshaft phaser wherein camshaft oscillatory torque resulting from opening and closing of an associated engine valve is employed to controllably adjust the degree of advance or retard of the rotor. All advance chambers communicate with a first annular passage, and all retard chambers communicate with a second annular passage. Valve means connecting the first and second annular passages are controllable by a solenoid-actuated piston to permit selective flow of oil between the advance and retard chambers to alter the angular position of the rotor with respect to the stator. The solenoid windings are selectively actuable in response to an engine control module. Preferably, the phaser is a sealed unit, filled with oil at manufacture and requires no oil connection with the oil recirculation system of an engine upon which the phaser is mounted. The phaser is independent of engine oil pressure for actuation.

Abstract: The invention concerns a filtering device for filtering vibrations transmitted by a rotating engine component (11) adapted to drive in rotation an output shaft (19), which device comprises a drive shaft damper (20) tuned at a frequency substantially locked within a range of frequencies to be damped: electromagnetic modulating means (23) are designed to adapt the frequency of the damper (20) to the frequency of the vibrations transmitted by the rotary component (11). The invention also concerns a transmission for motor vehicle comprising a drive shaft (11), linked to a rotary component formed by the motor vehicle engine crankshaft, an output shaft (19) linked to the drive shaft releasable via a clutch, a gearbox (50), said output shaft (19) being the input shaft of the gearbox (50), a filtering device of the inventive type being provided for filtering vibrations emitted, hence transmitted, by the rotary component.

Abstract: The invention concerns a rotary piston adjuster for adjusting the angular position of the camshaft of an internal combustion engine, said adjuster comprising an outer rotor having at least one hydraulic chamber, and an inner rotor comprising at least one pivoting vane that can pivot hydraulically in the hydraulic chamber between a retard stop position and an advance stop position. A locking device suitable for detachably connecting the outer and inner rotors to each other and at least one compression spring acting in opposition to the frictional torque of the camshaft are arranged between the two rotors. A liberal design of the compression spring and a low-wear operation with this spring are enabled by the fact that the compression spring (27, 27′) is arranged in an attachment (4) that is connected to the rotary piston adjuster, and the components of the attachment have a wear-resistant configuration and support the compression spring (27, 27′) at least pointwise over its entire length.

Abstract: A vane-type cam phaser wherein a locking pin assembly is disposed between a rotor and a stator of the phaser to selectively couple the rotor and stator together under certain operating conditions, for example, during engine start-up. The central axis of the locking pin assembly is disposed in the rotor parallel to the rotational axis of the phaser. The pin is spring loaded in a default position and is guided through its axial movement by two cylindrical guide surfaces—an inner guide surface and an outer guide surface. The lengths of these guide surfaces are optimized to minimize binding and sluggish operation of the pin caused by lateral forces exerted on the pin by the stator when in operation. The outer guide surface to inner guide surface ratio (L/I) is preferably greater than 2.

Abstract: In a valve timing adjusting apparatus, rotating response speed of a vane rotor and a moving speed of a lock piston are changed according to changes of oil temperature and pressure. It sometimes happens that the lock piston passes the fitting hole before the lock piston is fitted in the fitting hole. Timing of actuating a solenoid valve is retard by a given delay time from timing of actuating a spool valve. The given delay time is decided by a map based on sensor signals representing the oil temperature and pressure input to ECU. The given delay time is shorter as the oil temperature increases and longer as the oil pressure increases.

Abstract: The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (1) for the angular adjustment of the drive pinion relative to the shaft, two chambers (2, 3) that are alternately supplied with hydraulic fluid and a control valve (6) for actuating the adjusting element (1), said control valve being connected to the chambers (2, 3) of the adjusting element (1) through pressure medium channels (4, 5). The control valve (6) comprises a valve body (7) that has two working connections A and B for the pressure medium channels (4, 5), a delivery connection P for the supply of hydraulic fluid and a discharge connection T for the discharge of hydraulic fluid, and the control valve (6) further comprises a sliding valve control piston (8) for setting different hydraulic resistances W between the individual connections.

Abstract: A variable valve timing device includes a rotation transmitting member rotated integrally with a rotation shaft of an engine, a rotor member disposed in the rotation transmitting member to be rotated relative to the rotation transmitting member and rotated integrally with an intake and exhaust valves controlling member, a fluid chamber defined between the rotor member and the rotation transmitting member, a vane radially equipped to one of the rotor member and the rotation transmitting member, and a covering member fixed to the rotation transmitting member for covering the fluid chamber. An axial edge surface of the biasing member discontinuously comes in contact with at least one of the rotor member and the covering member.

Abstract: A valve timing control device is provided, which has an advantageous point of locking a relative rotation phase at an intermediate phase based on an engine halt signal. The valve opening-closing timing control device has a relative rotation control mechanism including the first path for supplying or discharging oil to or from the retard angle chamber and the advance angle chamber and for moving a relative rotation phase between the retard angle chamber and the advance angle chamber in the range between the most retarded angle phase and the most advanced angle phase. The relative rotation control mechanism has a lock oil passage for actuating lock portions for locking the relative rotation phase at the intermediate phase between the most retarded angle phase and the most advanced angle phase. The second path is provided separately from the first path. The second path supplies oil to and discharges oil from a lock oil passage.

Abstract: An arrangement for relative angle of rotation adjustment of a camshaft of an internal-combustion engine has an interior part non-rotatably connected with the camshaft and having at least approximately radially extending webs or blades. A driven cell wheel has several cells distributed along the circumference and bounded by webs. The cells are divided by the webs or blades into pressure spaces. Sealing bodies are arranged in recesses provided on faces of the webs or blades. For sealing off the pressure spaces by a hydraulic action, the sealing bodies are pressed against an interior wall of the cell wheel. The sealing bodies are constructed as rollers which, provided with an installation play, are received in the recesses. During operation of the adjusting unit, the rollers, for sealing purposes, form line contacts with the interior wall of the cell wheel and with the lateral walls of the recesses.

Abstract: An arrangement is provided for relative angle-of-rotation adjustment of a camshaft of an internal-combustion engine with respect to a driving wheel. An interior part, non-rotatably connected with the camshaft, has at least approximately radially extending webs or vanes. A driven cell wheel has several cells distributed along the circumference and bounded by webs. The camshaft is rotatable by way of the webs or vanes between two end positions relative to the cell wheel, and the interior part is laterally bounded by two cover elements connected with the cell wheel. Recesses forming chambers are provided to reduce friction between the webs or vanes of the interior part and the cover elements in the side walls of the vanes directed to the cover elements. During operation of the internal-combustion engine, the recesses are at least partially acted upon by hydraulic oil.

Abstract: The invention concerns a device for the hydraulic adjustment of the angular position of a shaft (1) relative to a drive pinion (14), said device comprising a plate (2) fixed to the shaft to cooperate with the drive pinion (14) or with a component fixed to the drive pinion. The device comprises at least one ring-segment shaped section (2a) in the plate (2) and a means (4a) arranged on the drive pinion (14) or on said component to cooperate with the shaped section (2a) so as to divide the shaped section into two separate chambers (10, 11). The device further comprises a means for a selective hydraulic pressurization of the chambers (10, 11) for adjusting the relative angular position of the drive pinion (14) and the shaft (1).

Abstract: A valve timing control apparatus for an internal combustion engine has a lock pin that is movably provided in an accommodation hole of one of vanes of a rotor. A screw portion is formed along part of the outer circumference of the lock pin, which is fixed to a shaft of a motor. When hydraulic pressure control is performed to maintain a housing and the rotor in a predetermined intermediate phase, the lock pin moves in the axial direction of a cam shaft in response to rotation of the motor independently of the hydraulic pressure control, and engages a lock recess portion formed in a sprocket.

Abstract: A coupling assembly for agricultural implements has a friction coupling (1), an electromagnet (6) and control mechanism (7). The friction coupling (1) includes a friction assembly (4) which is loaded by a pressure plate (14). The pressure plate (14) is loaded by pressure springs (15, 16). The pressure plate (14) is adjustable by an actuating device (5) which includes an electromagnet (6) and an anchor plate (19). The control mechanism (7) includes a control member (27) which, by changing the electric current, regulates the pressure force of the pressure plate (14) during the coupling and/or uncoupling operation. The housing (2) and the hub (3) are associated with speed sensors (25, 26) which transmit a signal to the control mechanism (7) to relieve the load on the friction assembly. Thus, this prevents the friction coupling (1) from overheating.

Abstract: The present invention provides a valve timing regulating device which controls the opening/closing timing of an exhaust valve of an internal engine combustion engine so that upon starting the engine a rotor member is rotated relative to a housing member for reaching in shorter time duration a region in which a lock mechanism functions. The valve timing regulation device includes a fluid pressure circuit controlling the supply and drainage of operating fluid to and from each of the advance angle fluid chamber and the retard angle fluid chamber.

Abstract: A cam phaser assembly having an improved configuration of the C1 oil gallery in the camshaft supplying oil to the cam phaser. An axial bore in the camshaft is formed over its non-threaded outer portion at a diameter substantially greater than the diameter of the bolt connecting the phaser to the camshaft. Upon assembly of the cam phaser to the camshaft, an annular, cylindrical gallery is formed between the bolt surface and the bore, which gallery replaces the plurality of axial bores required for the C1 gallery in the prior art camshaft. The prior art C2 gallery, which utilizes a second axial bore in the bolt itself, is substantially unchanged, and an O-ring around the cam bolt in the first axial bore seals the C1 and C2 pressure galleries from communicating with each other.

Abstract: A device for supplying liquids, particularly fuel, has a first drive shaft (32) and a supply pump (30) having at least one supply member (40) coupled to a second drive shaft (36), whereby the first drive shaft (32) drives the second drive shaft (36) via a drive unit (60). The drive unit (60) is preferably a tapered ring drive, which has a first frictional bevel gear (62) connected to the first drive shaft (32) and a second frictional bevel gear (64) connected to the second drive shaft (36), whereby the first and second friction bevel gears (62, 64) roll off one another by a tapered ring (66) disposed between the two bevel gears. The tapered ring (66) is movable for changing the gear ratio of the gear unit (60) as a function of the supply pressure produced by the supply pump (30). In this manner, with a lower supply pressure, a large gear ratio of the gear unit (60) is determined, and with an increased supply pressure, a smaller gear ratio of the gear unit (60) is determined.

Abstract: It is an object to provide a continuously variable valve timing adjusting device to improve valve timing advance response for an internal combustion engine. The device, capable of continuously and variably controlling the intake valve timing phase, includes: an advance chamber which hydraulically rotates a vane rotor and a camshaft on the advance side relative to the timing rotor; a retard chamber for rotating the camshaft on the retard side relative to the timing rotor; an advance-retard oil pressure control valve; an oil communicating passage for fluid communication between the advance chamber and the retard chamber; a hydraulic piston, flow control valve which controls the oil in the communicating passage according to the retard chamber pressure when the engine is running at a low speed and a high oil temperature; and a ball valve check valve which checks the oil flow from the advance chamber to the retard chamber.

Abstract: A valve timing control system for an internal combustion engine for preventing dispersion of a control amount and unexpected release of a lock pin is provided. The valve timing control system is provided with actuators 15 and 16 connected to cam shafts 15C and 16C, hydraulic pressure supply units 19 and 20 for driving the actuators, and a controller 21A for controlling a hydraulic pressure for the actuators in dependence on engine operation states while changing a relative phase of the cam shafts relative to crank shafts. The actuator includes a locking mechanism for setting the relative phase to a lock-up position, and an unlocking mechanism for releasing the locking mechanism in response to a predetermined hydraulic pressure. The controller makes a limit of control range small when the controller drives the locking mechanism to control the relative phase within a predetermined range of the lock-up position.

Abstract: A device for relative angular adjustment between two drive-connected elements rotating at the same rotational speed, in particular between a chain wheel and a camshaft of an internal combustion engine, includes, as an actuating drive, an electrically commutated electric motor with, as coil part, a stator arranged fixedly relative to the housing.

Abstract: A method of actuating a device for varying the valve timing of an internal combustion engine without jamming of the locking element during starting of the internal combustion engine, the solenoid of the hydraulic valve is at first energized through a number of high frequency cycles of high and low energization that are broken off after a defined period of time or after a defined number of cycles, followed by a renewed energization of the solenoid with a high energization with a simultaneous check by the microprocessor to determine whether the element fixed to the camshaft has been angularly displaced relative to the element fixed to the crankshaft out of its basic position whereby if the microprocessor determines that the element fixed to the crankshaft is still in the basic position, the first two phases of energization are repeated and the microprocessor has determined an angular displacement of the element fixed to the camshaft, the solenoid is energized with a current defined by the microprocessor which i

Abstract: A coupling assembly for agricultural implements has a friction coupling (1), an electromagnet (6) and control mechanism (7). The friction coupling (1) includes a friction assembly (4) which is loaded by a pressure plate (14). The pressure plate (14) is loaded by pressure springs (15, 16). The pressure plate (14) is adjustable by an actuating device (5) which includes an electromagnet (6) and an anchor plate (19). The control mechanism (7) includes a control member (27) which, by changing the electric current, regulates the pressure force of the pressure plate (14) during the coupling and/or uncoupling operation. The housing (2) and the hub (3) are associated with speed sensors (25, 26) which transmit a signal to the control mechanism (7) to relieve the load on the friction assembly. Thus, this prevents the friction coupling (1) from overheating.

Abstract: A variable valve timing control apparatus for an internal combustion engine comprising a housing member rotated in synchronism with one of a first shaft and a second shaft, the housing member comprising a circular space provided therein and at least one fan-shaped space radially extending from an outer circumferential surface of the circular space, a vane rotor rotated in synchronism with the other of the first shaft and the second shaft, the vane rotor is accommodated in the housing member in order to relatively rotate with respect to the housing member, the vane rotor comprising at least one vane radially extending so as to divide each the fan-shaped space into a first chamber and a second chamber, a locking member provided in one of the housing member and the vane, the locking member comprising a main body portion provided with a cylindrical shape and a leading head portion provided with a tapered surface whose diameter decreases toward an end face of the leading head portion, an engaging bore provided in

Abstract: A plate spring is pre-assembled as a unit into a seal member which contains the section between an advancing oil pressure chamber and a retarding oil pressure chamber in a valve timing regulation device. Both the seal member and the plate spring are adapted to be inserted integrally between the sliding faces of the first rotating body and the second rotating body of the valve timing regulation device. Furthermore it is possible to facilitate the insertion of these components. The detachment of the plate spring 32 which is fitted into the indented inner section of the seal member 27 is suppressed and a spring detachment prevention means 31a, 31b which allows displacement due to resilient deformation of the plate spring 32 is provided in the seal member 27.

Abstract: The reference valve timing of an intake valve and an exhaust valve is set based on an engine load detected and an engine rotation speed detected. An engine start and an engine idling condition are detected. The valve timing of the intake valve and the exhaust valve is controlled, while maintaining valve overlap amounts to be substantially the same, so that a valve overlap center becomes at an advance side from an exhaust top dead center, with respect to the reference valve timing, at the engine start and in the idling condition during a predetermined period of time after the engine start.

Abstract: A variable valve timing system is provided with a relative rotation controlling mechanism allowing relative rotation of the housing member and the rotor member by an unlock operation through the supply of operation fluid, and restricting the relative rotation of the housing member and the rotor member at an intermediate angle phase between a most retarded angle phase and a most advanced angle phase by a lock operation through the discharge of the operation fluid. A hydraulic pressure circuit controls the supply and discharge of the operation fluid to the relative rotation controlling mechanism and also controls the supply and discharge of the operation fluid to the advanced angle chamber and the retarded angle chamber. The hydraulic pressure circuit is adapted to discharge the operation fluid from the advanced angle chamber, the retarded angle chamber and the relative rotation controlling mechanism when the combustion engine is started.

Abstract: A variable camshaft timing apparatus (10) includes a pulse actuating circuit (24A,50,44,56,60,24R and 24R,52,46,54,58,24A) for oscillating the variable camshaft timing apparatus in reaction to fluid under pulsation, and includes a pressure actuating circuit (30,34,36,40,44,50,24A,24R,52,46,66,80/180,32 and 30,34,38,42,46,52,24R,24A,50,44,64,80/180,32) for oscillating the variable camshaft timing device in reaction to fluid under pressure. Advance and retard valves (44,46) are interconnected with the pulse and pressure actuating circuits for independently and simultaneously activating the pulse and pressure actuating circuits. Finally, an exhaust valve (80,180, 280) is positioned in fluid communication with the pulse and pressure actuating circuits, such that the variable camshaft timing device may be oscillated using one or both of the pulse actuating and pressure actuating circuits, and may be maintained in position using one or both of the pulse actuating and pressure actuating circuits.

Abstract: A hydraulic camshaft-adjusting device of the rotary piston type that includes of a drive gear (2) directly connected to a crankshaft and an impeller that is directly connected to a camshaft (3). The drive gear (2) has a cavity formed from a perimeter wall (5) and two side walls (5, 6) inside of which at least one hydraulic working chamber is formed from at least two boundary walls. The impeller has at least one radial vane (12) and each vane (12) divides one hydraulic work chamber into two hydraulic pressure chambers. The outer end (18) of each vane (12) of the impeller is pressed radially against the perimeter wall (5) of the drive gear (2) as a result of the force of a spring element (17) located at the inner end (15) of the vane.

Abstract: A variable valve drive mechanism of an internal combustion engine is provided which includes a camshaft that is operatively connected to a crankshaft of the engine such that the camshaft is rotated by the crankshaft, a rotating cam provided on the camshaft, and an intermediate drive mechanism disposed between the camshaft and an intake or exhaust valve of the engine. The intermediate drive mechanism is supported rockably on a shaft that is different from the camshaft, and includes an input portion operable to be driven by the rotating cam of the camshaft, and an output portion operable to drive the valve when the input portion is driven by the rotating cam. The variable valve drive mechanism further includes an intermediate phase-difference varying device for varying a relative phase difference between the input portion and the output portion of the intermediate drive mechanism.

Abstract: An actuator includes a cylinder having a central axis and a side wall. The side wall has an inner surface. A clutch is disposed within the cylinder, and includes a hub and at least one clutch arm. Each clutch arm includes a negative opposing finger, a positive opposing finger, a negative opposing spring and a positive opposing spring. The negative opposing finger has a first end attached to the hub and a fingertip end engaging the inner surface of the side wall. The positive opposing finger has a first end attached to the hub and a fingertip end engaging the inner surface of the side wall. The negative opposing spring has a first end attached to the negative opposing finger. The positive opposing spring has a first end attached to the positive opposing finger. A control input is configured for engaging a second end of a selected one of the negative opposing spring and the positive opposing spring.

Abstract: A cam phaser wherein the stator is integral with either the back plate or the front cover plate. The integral stator may be formed by any desired forming technique, such as, for example, by machining, casting, welding, or injection molding. Preferably, however, the integral stator is formed in a single molding step by powdered metal forming using powdered aluminum. Cap seals are provided for sealing the hydraulic chambers of the cam phaser.

Abstract: A plate spring is pre-assembled as a unit into a seal member which contains the section between an advancing oil pressure chamber and a retarding oil pressure chamber in a valve timing regulation device. Both the seal member and the plate spring are adapted to be inserted integrally between the sliding faces of the first rotating body and the second rotating body of the valve timing regulation device. Furthermore it is possible to facilitate the insertion of these components. The detachment of the plate spring 32 which is fitted into the indented inner section of the seal member 27 is suppressed and a spring detachment prevention means 31a, 31b which allows displacement due to resilient deformation of the plate spring 32 is provided in the seal member 27.

Abstract: Either of intake and exhaust valves of an internal combustion engine is provided with a variable valve timing device. In a low-speed, low-load range, exhaust valve advanced-closing control is performed to close the exhaust valve at an earlier timing than the top dead center on the intake stroke, thereby trapping residual combustion gases in the cylinder. Furthermore, the cylinder temperature is raised by setting the intake valve opening timing at around the top dead center on the intake stroke or at a later timing thereof to thereby compress by the piston the residual gases in the cylinder during a period from closing the exhaust valve till the top dead center on the intake stroke. Thus it becomes possible to take in the air-fuel mixture into the cylinder at a higher cylinder temperature than the gas temperature of internal EGR caused by conventional valve overlap.

Abstract: A torsion coil spring is installed in a circle groove of a chain sprocket. Both ends of the coil spring are bent in a radially outward direction. The first bent end is fit to a fixed pin protruding from the chain sprocket, and the second bent end is fit to a pin protruding from a vane rotor. The coil spring urges the vane rotor such that the vane rotor advances with respect to the chain sprocket. That is, the coil spring urges the vane rotor such that a camshaft advances with respect to an engine crankshaft.

Abstract: A method for controlling a valve lift device associated with an internal combustion engine includes determining, according to maps, a relative timing angle to be applied to a camshaft and crankshaft. The determined timing angle is processed with a PID-type control. Each time an engine enters a stabilized low idle speed, a reference value of the timing angle is determined when a valve lift device is inactivated. The reference value is taken into consideration when any later timing angle command is given. At least one further step is included. For example, a map of a duty cycle for an opening of a hydraulic valve controlled by the PID of the valve lift device is pre-established on a test bed as a function of an engine water temperature, and/or the timing angle to be applied as a function of the engine water temperature is adjusted by modifying the reference value.

Abstract: A torsional vibration damper comprising an input member for connection with a vehicle engine and an output member for connection with a vehicle transmission, the members being mounted for limited relative rotation about a common axis against a damping means comprising one or more circumferentially acting compression springs. Each spring acts between a first abutment formed as an integral part of the input member and a second abutment formed as an integral part of the output member. The damper may also include one or more elastomeric springs or blocks which are subjected to compression in end zones of the relative rotation of the input and output members. Other inventive features of the damper include support members for avoiding fouling of the elastomeric springs or blocks by the compression springs and the use of cantilevered pivot pins for the connection of bob-weight connecting linkages connected between the input and output members.

Abstract: A valve timing control apparatus in an internal combustion engine is feedback controlled by a sliding mode control and an abnormality of the sliding mode control is diagnosed. During a slight abnormality other than a crucial abnormality which makes the feedback control impossible, the system is feedback controlled to converge to a target value using only a non-linear term calculated by the sliding mode control.

Abstract: A variable valve timing apparatus has a rotational torque transmission path that changes the relative phases of a camshaft that moves an engine valve and a rotary crank body that is coupled to the crankshaft. The rotational torque transmission path has uses an electromagnetic brake delay rotation of a drum, which is coupled to the rotary crank body by a biasing member and a moving member. When rotation of the drum is delayed, the moving member changes the angular orientation between the drum and the rotary crank body against the biasing force of the biasing member. The electromagnetic brake is coupled to a cover by two protrusions and two concavities. The protrusions are arranged to prevent contact between the electromagnetic brake and the drum due to tension of the chain.

Abstract: The device for adjusting the phase position of a shaft, especially a camshaft that can be rotated by a drive shaft, more particularly a crankshaft, by a transmission device with at least one transmission wheel, is configured as a rotary piston machine according to the orbit principle. The inventive device adjusts the rotary position of the transmission wheel in relation to the shaft. The rotary pistol machine includes a stator with inner teeth, an annular rotary piston with outer teeth that engage with the inner teeth of the stator, a driven part that can be rotated by the rotary piston and a valve that can be rotated by the rotary piston and a valve device. In order to control the movement of the rotary piston, the valve device enables rotating partial areas of the working area between the stator and the rotary piston to be joined to a fluid supply device at high or low pressure. The fluid supply device includes a control mechanism, a phase position detector and at least one control valve.

Abstract: A valve timing controller with the structure of a stopper mechanism and a lock mechanism thereof is so provided as to reduce the cost and the size of the controller.

Abstract: A hydraulic camshaft-adjusting device of the rotary piston type having a drive gear (2) and an impeller. The drive gear (2) has a cavity formed from a perimeter wall and two side walls (5, 6) inside of which at least one hydraulic working chamber is formed from at least two boundary walls (8). The impeller has a wheel hub (10) with at least one vane that extends into a working chamber, dividing the chamber into two associated hydraulic pressure chambers. The pressure medium feed to and from the pressure chambers is done using a pressure medium tap (16) on the side facing a camshaft as well as using pressure medium channels (17) incorporated into the axial sides (14, 15) of the wheel hub (10) of the impeller, which are connected to the pressure medium tap through a pressure medium distributor (20). The pressure medium tap (16) and the pressure medium distributor (20) are encircled at the head (19) and the outer surface (21) by a respective penetration (22, 23) in the side walls (5, 6) of the drive gear (2).

Abstract: In a control apparatus for a variably operated engine valve mechanism of an internal combustion engine, a phase converter is disposed to variably control at least one of a displacement and an open-and-closure timing of an engine valve; an oil pump to supply a hydraulic to operate the phase converter, a reversible motor of DC type is disposed to drivingly revolve the oil pump, and a controller is disposed to output a drive current to the reversible motor according to an engine driving condition, the controller controlling a revolution direction of the oil pump via the reversible motor at least when an operation of the phase converter is switched.

Abstract: An apparatus adjusts the angle of a camshaft, in particular a camshaft provided for actuating exhaust valves, relative to the crankshaft driving the camshaft. An input element is driven by the crankshaft, an output element is adjusted relative to the input element and drives the camshaft, and a control device adjusts the input element relative to the output element. The output element is arranged at least approximately concentrically relative to the input element. At least one spring element for biasing the output element towards a basic position is arranged between the input element and the output element.

Abstract: Since the conventionally the chip seal 14, 16 and the metallic blade spring 15, 17 have been formed separately, assembly efficiency has been poor (for example when the chip seal 14, 16 is inserted, the metallic blade spring 15, 17 detaches and falls out) which lowers productivity. As a result, the cross sectional shape of the chip seal 21 which pushes against the rotor 13 is made in the shape of a letter L.

Abstract: The vane type hydraulic actuator according to the present invention comprises a guide locking mechanism (guide stopper pin) (1) for guiding the rotor (44) to a locking position where the rotor (44) can be locked to the case (43), and a retaining locking mechanism (retaining stopper pin) (4) for retaining the rotor (44) to the case (43), after the rotor (44) is guided to the locking position. The actuator having vanes, wherein the length in the peripheral direction of the tip portion of the vane having the locking mechanism is substantially identical to that of the vane which is located symmetrically thereto. The length in the peripheral direction of the tip portion of the other vanes is shorter than that of the vane having the locking mechanism.

Abstract: A valve timing control device disposed between a rotary element synchronously rotating with an engine and a camshaft actuating the engine valve, comprising a housing adapted to rotate with one of the rotary element and the camshaft and a vane rotor within the housing. The vane rotor has an axial bore having an open end and pressure chamber-side fluid passages open to the axial bore and is adapted to rotate with the other of the rotary element and the camshaft. Vanes radially extending from the vane rotor define within the housing fluid pressure chambers communicating with the pressure chamber-side fluid passages, respectively. A fluid control mechanism controls supply and discharge of a hydraulic fluid relative to the fluid pressure chambers. A shaft is received in the axial bore and formed with pressure source-side fluid passages connecting the pressure chamber-side fluid passages with the fluid control mechanism.

Abstract: An internal combustion engine has a sprocket driven by a timing chain in synchronization with the engine rotation and a camshaft for driving intake or exhaust valves. A valve timing control device of the engine comprises a first rotating member on which the sprocket is integrally formed; a second rotating member capable of making a relative rotation to the first rotating member and rotated together with the camshaft; a plurality of working fluid chambers defined between the first and second rotating members; and a charging/discharging means for charging and discharging a working fluid to and from the working fluid chambers to induce the relative rotation between the first and second rotating members. The sprocket and at least a base part of the first rotating member on which the sprocket is integrally formed are constructed of a porous metal member.

Abstract: A rotor member having vanes is rotatable in a housing in the forward and reverse directions by supplying and draining hydraulic pressure selectively to an advance side hydraulic chamber and a retard side hydraulic chamber, to change the relative rotational phase between a timing sprocket and a cam shaft and thereby to vary the opening and closing timings of an intake or exhaust valve. The rotor member has a bulge portion located at the side of one vane, and formed with an axially extending pin sliding hole for receiving a lock pin to prevent and allow relative rotation between the housing and rotor member by moving in and out of an engaging recess of the housing.

Abstract: The present invention relates to a lock mechanism for a valve timing regulation device which regulates the timing of the opening and closing of engine valves, the lock mechanism locks or releases a first rotating body and a second rotating body in response to the operational condition of an engine. The lock mechanism includes a radial groove 32 provided in either the first rotating body 21 or the second rotating body 24 and extending in a radial direction of the rotating body. A locking member 35 is slidably inserted into the radial groove 32, and the locking member is urged towards a center of the rotating body by an urging means 36. An oil pressure is applied to the locking member 35 in a direction opposite to the urging direction.