Abstract: A parking lock device that is installed in a transmission of a vehicle includes a gear, a lock, a receiver, a cam, and a damper. The lock has a pawl that can be engaged in a tooth space between the teeth of the gear. The lock moves between an engagement position at which the pawl is engaged in the tooth space to lock the gear and a retreat position at which the pawl is not engaged in the tooth space. The receiver is arranged to be fixed to a case of the transmission. The cam moves forward and backward with respect to a gap between the receiver and the lock. The cam holds the lock at the engagement position when having entered the gap. The damper is provided in a vibration transmission path to dampen vibrations transmitted to the case of the transmission.

Abstract: A park mechanism includes a cam pivotal between Park and not-Park ranges, including a radial outer surface formed with angularly spaced lobes, a roller urged by a spring into contact with the outer surface, a park spring urging the cam toward the Park-range, a power source for pivoting the cam, and a pawl actuated by cam movement into a Park state and a not-Park state.

Abstract: Disclosed is a parking lock apparatus which can prevent an electric actuator from being accessed from the outside of the vehicle, and thereby can prevent the function of the parking lock apparatus from being lowered as well as can reduce the production cost in comparison with the conventional parking lock apparatus. The parking lock apparatus comprises an electric actuator 11 to be activated in response to the shift operation, and a parking lock apparatus 12 capable of selectively taking a parking lock maintained state to have the stoppage state of a vehicle 1 maintained or a parking lock released state to have the stoppage state of the vehicle 1 released. The electric actuator 11 is disposed between a first housing 1H partly constituting an engine 2 for generating a power and a second housing 2H partly constituting a transaxle 3 for transmitting the power generated by the engine 2.

Abstract: In case of power supply loss, a parking lock is operated by moving a piston of a hydraulic actuator rightward by use of hydraulic pressure accumulated in an accumulator. If a hydraulic pressure generating source becomes unable to generate line pressure due to its failure after the power supply loss, it is desirable that the parking lock be releasable to tow a vehicle, for example. In that time, because the hydraulic pressure in the accumulator has got out via an orifice, the parking lock can be released by moving the piston in the hydraulic actuator leftward by use of a manual operation device without interruption by the hydraulic pressure accumulated in the accumulator. Because the hydraulic pressure in the accumulator is automatically released via the orifice, a complicated mechanism for enabling the manual operation device to work without interference from the hydraulic actuator becomes unnecessary.

Abstract: A parking lock control element has an actuator coupled to a parking lock pawl, and a retaining device which works with the actuator to secure the parking lock pawl in the disengaged position. The connecting device is characterized in that the retaining device has a blocking slide connected to the actuator, and a blocking actuator having a slider gap, the width of the slider gap being modified in an actuating manner, wherein the blocking slide can move into the slider gap—when the slider gap is open—releasing the actuator. The connecting device reduces structural complexity and related costs. At the same time, the control element is comparatively robust with respect to manufacturing tolerances, acceleration forces, vibrations, and temperature stress. With minimal auxiliary energy, high holding forces can be achieved to secure the parking lock pawl. An emergency unlocking actuation can also be integrated in a simple manner.

Abstract: A gear shift arrangement for a motor vehicle gear mechanism comprises at least one clutch arrangement by means of which a gear of the gear mechanism can be engaged and disengaged. An actuator arrangement is coupled with the clutch arrangement via a first force transmission device. A parking block arrangement is coupled with the actuator arrangement via a second force transmission device. The actuator arrangement can be moved into a parking block position in which the parking block arrangement is activated. The actuator arrangement is configured to engage the gear on its travel to the parking block position and/or in the parking block position via the first force transmission device. The first force transmission device has a decoupling device which is configured to move or to let move the actuator arrangement into the parking block position even when the clutch arrangement is blocked.

Abstract: Disclosed is a parking lock mechanism of a power transmission apparatus which can stably supply lubrication oil to the sliding surface of a parking cam to decrease the sliding resistance of the parking cam. The parking lock mechanism 52 includes a support portion 73 for positioning a sleeve 71 with respect to an extension housing 6, and a first guide rib 74 provided on the support portion 73 for catching oil circulating in a transaxle case 4 to supply the oil to the support portion 73. The sleeve 71 has an upper portion formed with a notch 71c for allowing a parking pawl 62 to be held in abutment with a parking cam 61. The oil caught by the first guide rib 74 is supplied through the support portion 73 and the notch 71c of the sleeve 71 to the sliding surface of the parking cam 61, viz., the sliding surface between the parking pawl 62 and the parking cam 61 and the sliding surface between the parking cam 61 and the sleeve 71.

Abstract: A park assembly includes a park gear, a pawl that engages and disengages the park gear, a park rod that causes the pawl to engage with the park gear and to disengage from the park gear, a servo, and a bellcrank transmitting a first force to the park rod causes the pawl to disengage from the park gear in response to a second force substantially greater than the first force and produced by the servo.

Abstract: A parking lock apparatus for a transmission including a meshing type clutch is provided in which when a parking lock is operated by engaging a parking pawl (43) with a parking gear (41) provided on a gear shaft of a transmission, since a parking rod (51) for operating the parking pawl (43) is provided on a shift rod (44) connected to and operated by an actuator (46) in order to establish a reverse gear position on the transmission, it is possible to establish the reverse gear position with a shift fork (48) by moving the shift rod (44) in one direction from the neutral position, and to carry out the operation of the parking lock automatically without requiring a special actuator by moving the shift rod (44) in another direction from the neutral position, thereby reducing the size and cost of the transmission by enabling the number of components, including the number of actuators (46), to be cut.

Abstract: A system for blocking an output shaft of the engine of an automobile, of a type that includes a toothed wheel coaxially mounted on the shaft, and a first finger mobile between a shaft releasing position and a shaft blocking position in which the first finger is engaged in a gap formed between two teeth of the wheel. The system includes an alignment mechanism capable of aligning a gap between two teeth of the wheel and the first mobile finger, and the first mobile finger is configured to be inserted into the gap without any substantial circumferential clearance.

Abstract: A simply structured rattling noise reduction device for a vehicle capable of preventing rattling certainly under neutral position. The rattling noise reduction device is applied to a vehicle having a transmission mechanism configured to transmit a torque of a prime mover to an output member through a mating transmission mechanism, and a shifting means capable of selecting a drive position in which the torque of the prime mover is transmitted to the output member and a neutral position in which the torque of the prime mover is not transmitted to the output member, and in which the transmission mechanism is configured to idle any one of rotary members thereof to prevent the torque from being applied to the output member in case the neutral position is selected.

Abstract: A parking lock control element having an actuator coupled to the parking lock pawl, and a retaining device which works with the actuator to secure the parking lock pawl in the disengaged position. The retaining device has a blocking slide connected to the actuator, and a blocking actuator having a slider gap, the width of the slider gap being modified in an actuating manner, wherein the blocking slide can move into the slider gap—when the slider gap is open—releasing the actuator. The connecting device reduces structural complexity and related costs. The control element is comparatively robust with respect to manufacturing tolerances, acceleration forces, vibrations, and temperature stress. With minimal auxiliary energy, high holding forces can be achieved to secure the parking lock pawl. An emergency unlocking actuation can also be integrated in a simple manner.

Abstract: A vehicle parking lock device having a parking rod; a tapered parking cam disposed at a leading end portion of the parking rod; and a cam guiding device that guides the parking cam moved together with the parking rod in association with a projection of the parking rod toward the leading end portion to move a parking lock pole with the parking cam to a position of engagement with a parking lock gear rotated together with a transmission output member, the cam guiding device including a first guiding member in a cylindrical shape and a second guiding member in a half cylindrical shape that is disposed subsequently to the first guiding member, the second guiding member having a tapered guiding concave surface that guides the parking cam toward the parking lock pole in association with the projection of the parking rod toward the leading end portion.

Abstract: A parking brake device for motor transmissions, especially automatic transmissions has a parking brake pawl (2) with an actuating or adjusting device (3) for engaging and disengaging the pawl (2) as well as a holding device for securing the parking brake pawl (3) in the disengaged position. The holding device includes a toggle mechanism (6, 7, 8, 9) that can be brought from a first, stretched position, in which the parking brake pawl (2) is fixed in the disengaged position, into a second, bent position, in which the parking brake pawl (2) can be engaged. This presents a reduction of the design effort, an improvement of robustness and resistance to different ambient conditions with no auxiliary energy requirement for maintaining the securing action for the parking brake pawl and also minimal releasing forces for releasing the parking brake securing.

Abstract: A parking lock device is mounted on a transmission of a vehicle. The transmission includes a housing and an output shaft. The park lock device includes a parking pawl including a pawl portion, a first coupling member coupled to a rear end portion of the output shaft of the transmission, and a second coupling member coupled directly to the first coupling member, the second coupling member being supported by the housing of the transmission through a bearing and being provided with an extended shaft portion formed in a same shape as the rear end portion of the output shaft of the transmission, and a coupling coupled to the extended shaft portion of the second coupling member.

Abstract: In an automatic transmission employing a parking-lock mechanism accommodated in a transmission casing for mechanically locking and unlocking a transmission output shaft of a speed-change system, the transmission casing includes a first casing and a second casing integrally connected to each other. A shift-lever-operated manual shaft and a cam-equipped parking rod are installed on the first casing, whereas a support actuator having a guide face for the cam and a pivotable parking pawl operated by the cam for meshed-engagement with a parking gear of the transmission output shaft when a specified longitudinal displacement of the parking rod has been reached are installed on the second casing. A temporary-retaining structure is provided on a transmission-output-shaft bearing retaining wall fixedly connected to a face of the first casing facing the second casing, for temporarily retaining the cam attached to the tip of the parking rod.

Abstract: A transmission parking lock device having a gearwheel with teeth and gaps and a pawl having a pawl tooth. The gearwheel rotates and the pawl pivots about axes that are parallel to each other. The gearwheel teeth each have a first contour and tooth flanks with respect to rotation of the gearwheel. The pawl tooth has a second contour and tooth flanks relative to the rotation of the gearwheel, and the gearwheel has an outer radius. The gearwheel and pawl are kinematically linked by a linear relationship between the pivoting and rotational angles. The first and/or second contour are at least partially circular with a radius of the outer radius of the gearwheel, and the teeth and/or the pawl tooth have, in the area of the front tooth flank of the gearwheel or parking lock pawl, a crown tip relief relative to the outer radius of the gearwheel.

Abstract: A parking lock device (1) for an automatic transmission of a motor vehicle. The parking lock device (1) comprises a locking pawl (3) that is fixed to the transmission housing and mounted so that the locking pawl (3) can pivot. The parking lock device (1) has a guiding element (3b) and a guide plate (5) fixed to and supported by the housing in which the guide element (3b) of the locking pawl (3) is guided laterally. One of a low-friction supporting element (7, 8) and an electrically insulating supporting element in a form of an insulating body (107) laterally guides the locking pawl (3).

Abstract: A parking brake actuator system for an outdoor power equipment unit, such as a riding lawn mower, comprises a reversible electric motor that drives a gear reduction assembly. The gear reduction assembly rotates an output shaft at a speed slower than the speed of rotation of the motor. The output shaft has opposite ends that are linked by a pair of actuating rods to a pair of parking brakes. As the motor is rotated in reverse rotary directions, the connecting portions of the rods that are coupled to the parking brakes are moved in opposite, straight line directions to move the parking brakes between brake disengaged and brake engaged positions.

Abstract: A parking lock device for a motor vehicle transmission which comprises a transmission housing, a locking pawl mounted by a bolt to swivel on the housing and loaded by a restoring spring, a guide plate supported on the housing, and a locking element by which, in the engaged condition, the locking pawl can be locked by being supported against the guide plate. The locking pawl is arranged on the bolt with some play and, on a narrow side thereof facing toward the guide plate, has a pawl hook with a first detent element, while the guide plate has, in a swiveling area of the pawl hook, an opening with a second detent element which interlocks with the first detent element when the parking lock is disengaged.

Abstract: A park lock of a transmission, including a park gear; a park pawl rotating about a pawl shaft, the park pawl having a pawl portion locking the park gear, the park pawl including a cam contact portion; a park rod responsive to an operation of a controller, the park rod having a cam portion pressing the cam contact portion to have park pawl engage the park gear; a park sleeve receiving the cam portion and defining a first contact point providing a reactive force to the cam contact portion of the park pawl pressing against the cam portion at a second contact point; a pawl torsional spring biasing the park pawl towards disengagement; and a pawl stopper limiting the rotation of the park pawl wherein motions are constrained within a plane of the transmission and components are rotatingly disposed in parallel axis bores in one half of a transmission case.

Abstract: Parking-lock arrangement for a motor-vehicle transmission. The parking-lock arrangement has a parking-lock wheel which is mounted such that it can be rotated about a first axis. The parking-lock arrangement has a parking-lock pawl which is mounted such that it can be moved between a locking position and a release position. The parking-lock arrangement has an actuating arrangement which actuates the parking-lock pawl and is mounted such that it can be rotated about a second axis over an angular range. The angular range has a first angular section, within which the parking-lock pawl can be actuated, and a second angular section, within which the parking-lock pawl is held in a position.

Abstract: A parking lock arrangement for a motor vehicle gearbox. A parking lock cog can be fixed to a shaft of the motor vehicle gearbox rotatable about a first axis. A parking lock pawl is supported so that it can pivot about a second axis. An actuating mechanism can pivot the parking lock pawl into a locking position, in which the parking lock pawl meshes with the parking lock cog. A release mechanism can pivot the parking lock pawl out of the locking position into a release position, in which the parking lock pawl is decoupled from the parking lock cog. The actuating mechanism has a cam, which is supported so that it can pivot about a third axis and which in a first cam position holds the parking lock pawl in the locking position.

Abstract: A parking brake (10) for a transmission (12) of a motorized vehicle (14). An anchor (24) is located to support an actuator (26) interposed between the anchor (24) and a parking pawl (22) when the parking pawl (22) is in the engaged position with a toothed parking gear (20). The anchor (24) is defined by a plurality of stacked laminas (30). Each of the plurality of stacked laminas (30) is rigid and has at least one peripherally extending surface (32), wherein the at least one peripherally extending surface (32) of at least two of the plurality of stacked laminas cooperate to define at least one load-bearing surface (34), and wherein the plurality of stacked laminas (30) are secured together to prevent relative movement of any one of the plurality of stacked laminas (30) with respect to another of the plurality of stacked laminas (30) when a load is transmitted through the parking pawl (22) from the at least one load-bearing surface (34).

Abstract: A parking brake assembly for the driveline of a motor vehicle is disclosed. The parking brake assembly comprises a locking mechanism, an actuator and an unlocking mechanism. The locking mechanism is able to inhibit and release the rotational movement of a shaft in the driveline of a motor vehicle. The actuator actuates the locking mechanism. The locking mechanism comprises a locking element which is linearly movable by the actuator, and a latching element which cooperates with the locking element. The locking element can be transferred into a first axial position in which the latching element assumes a releasing position in which the shaft is rotatable, and wherein the locking element can be transferred into a second axial position in which the latching element assumes a closing position in which the latching element inhibits a rotational movement of the shaft. The unlocking mechanism forcibly unlocks the locking mechanism.

Abstract: Disclosed is a parking lock mechanism of a power transmission apparatus which can stably supply lubrication oil to the sliding surface of a parking cam to decrease the sliding resistance of the parking cam. The parking lock mechanism 52 includes a support portion 73 for positioning a sleeve 71 with respect to an extension housing 6, and a first guide rib 74 provided on the support portion 73 for catching oil circulating in a transaxle case 4 to supply the oil to the support portion 73. The sleeve 71 has an upper portion formed with a notch 71c for allowing a parking pawl 62 to be held in abutment with a parking cam 61. The oil caught by the first guide rib 74 is supplied through the support portion 73 and the notch 71c of the sleeve 71 to the sliding surface of the parking cam 61, viz., the sliding surface between the parking pawl 62 and the parking cam 61 and the sliding surface between the parking cam 61 and the sleeve 71.

Abstract: A parking lock device of a motor vehicle transmission comprising a transmission housing (11) with a housing wall (11a), a parking lock gearwheel (1), a parking lock pawl (2), a parking lock bolt (3) for mounting the parking lock pawl (2) and a blocking element (5). A carrier plate (7) is arranged alongside the parking lock pawl (2) and is fixed to the transmission housing (11), and the parking lock bolt (3) is held, on one side, by the carrier plate (7) and, on the other side, by the transmission housing (11).

Abstract: A parking lock device for a motor vehicle transmission including a parking lock gear, a locking pawl, a locking element with an operating rod as well as a guide plate. The locking pawl engages with and blocks the parking lock gear when the parking lock is engaged and locked by the locking element, and when the parking lock is disengaged, the locking pawl disengages from the parking lock gear and can be locked in a form-locked manner. An unlocking element is fixed to the operating rod, and the unlocking element disengages the form lock before the parking lock is engaged. The locking element is arranged on a leaf spring which has a fixed end, a free end and a center arranged between the fixed and the free ends. The center can be moved outwardly by the unlocking element and the locking element is arranged on the free end.

Abstract: A parking apparatus for an automatic transmission, may include a sprag shaft having a first portion and a second portion extending from the first portion, wherein an end of the first portion may be inserted in a shaft groove formed in a transmission housing, and a sprag having one end fitted around the first portion of the sprag shaft to rotate about the sprag shaft, a sprag bracket fitted around the first portion of the sprag shall to cover the end of the sprag therein, wherein the second portion protrudes through the sprag bracket and the sprag bracket may be fixed to the transmission housing, and a sprag return spring mounted on the second portion protruding through the sprag bracket, wherein an end of the sprag return spring may be supported by the transmission housing and the other end thereof may be supported by the sprag.

Abstract: The present invention relates to a blocking mechanism for a parking lock of a shaft in a motor vehicle. The blocking mechanism includes a pawl pivotable about a pivot axis and which, in a blocked position, engages into at least one latch cut-out of a ratchet wheel connected to the shaft. The blocking mechanism includes an actuating mechanism having an actuating device for moving an actuation slider. The pawl is pivotable by a movement of the actuation slider. The actuation slider includes a first U-shaped component and a second U-shaped component which each have two side sections and a transverse section connecting the side sections. The first component and the second component are plugged into one another in opposite directions such that the transverse section of the one component at least partly closes the open end of the U shape of the component and vice versa.

Abstract: A power transfer system (60) for a vehicle to be driven by a prime mover, such as an electric motor, through an input drive shaft (12) carried by the vehicle to be interconnected to an output drive shaft (18) for driving driven wheels of the vehicle. A single speed transmission (68) for an electric motor (62) of a driven vehicle (14) defined by a first drive sprocket (22) connected to an input drive shaft (12) to be driven by an electric motor (62), and a second drive sprocket (24) connected to an output drive shaft (18) for driving driven wheels of the electric motor driven vehicle (14), and an endless flexible loop power transferring member (26) extending between the first and second sprockets (22, 24). A parking brake mechanism (10) for engaging and disengaging with respect to the output drive shaft (18) to prevent rotation of the output drive shaft (18) when engaged by a vehicle operator through mechanical or electrical drive mechanisms (16, 16a).

Abstract: A parking interlock arrangement for an automatic transmission of a vehicle which comprises a parking interlock gear (1) operatively connected to an output shaft and which can be locked by way of a locking pawl (2) in a shift position (P) of a notched disk (4). The notched disk (4) is connected, in a rotationally fixed manner, to a selector shaft (5). The locking pawl (2) can be actuated by way of a connecting rod (3), and the connecting rod (3) is operatively connected to the notched disk (4) by way of a coupling device in order to limit the selecting torque to be applied to the selector shaft (5).

Abstract: According to an operation of a shift lever to parking range, a cam member at a parking rod comes in between a parking pole and a support member, and the parking pole swings so that a pawl portion of the parking rod can engage with a parking gear. A concave holding portion to hold the support member is formed at a transmission case. The support member comprises a first cylindrical outer face having a first radius R1 which is supported in a concave inner face the concave holding portion to rotate in a specified range and a second cylindrical outer face (cam-contact portion) having a second radius R2 which contacts a cam member. The first radius R1 has a center which is located at the same position as that of the second radius R2. Herein, R2 is shorter than R1.

Abstract: A transmission parking lock with a ramp (10) for pressing against an actuating element. The ramp (10) defines an actuation direction (11) in which the actuating element can be moved and the ramp (10) has a ramp gradient in the actuation direction (11). The ramp gradient varies transversely with respect to the actuation direction (11) such that the load between a pawl (1) and of the actuating element can be reduced.

Abstract: A vehicle parking lock device having a parking rod; a tapered parking cam disposed at a leading end portion of the parking rod; and a cam guiding device that guides the parking cam moved together with the parking rod in association with a projection of the parking rod toward the leading end portion to move a parking lock pole with the parking cam to a position of engagement with a parking lock gear rotated together with a transmission output member, the cam guiding device including a first guiding member in a cylindrical shape and a second guiding member in a half cylindrical shape that is disposed subsequently to the first guiding member, the second guiding member having a tapered guiding concave surface that guides the parking cam toward the parking lock pole in association with the projection of the parking rod toward the leading end portion.

Abstract: The invention relates to a device for operating a parking lock of an automatic transmission in motor vehicles, with pawl which interacts with a ratchet wheel, which pawl is impinged upon by a spring energy accumulator (24) and for disengaging the parking lock can be hydraulically impinged upon against the preload force of the spring energy accumulator (24) by a hydraulic transmission control with corresponding control valves, wherein the control valves are controllable in accordance with operating parameters of the motor vehicle and a electromagnetically operable locking element (28), which in the controlled state in defined operating conditions additionally holds the pawl in the disengaged position. According to the invention, a purely hydraulically acting self locking valve (40) is integrated in the hydraulic transmission control (10), which locking valve maintains the controlled system pressure when the parking lock operation (14) is pressurized or when the parking lock is disengaged.

Abstract: A parking system for a hybrid vehicle includes a transmission housing, a first motor section provided in the transmission housing, and mounted on an input shaft, a second motor section provided at the rear of the first motor section, and mounted on the input shaft, and a parking mechanism provided between the first motor section and the second motor section for selectively restraining a drive gear spline-coupled to the second motor section. The parking system for a hybrid vehicle can be reduced in overall size by improving the layout of the parking mechanism within the transmission with two motors and forming the parking gear integrally with the drive gear.

Abstract: A layout for parking system of decelerator for an electric motor vehicle is provided herein. More specifically, the layout includes a decelerator housing, an input gear disposed within the decelerator housing, an output gear disposed within the decelerator housing, an intermediating gear connecting the input gear and the output gear and a parking unit disposed above the input gear and selectively trammeling the intermediating gear. Further, in the present layout the parking unit is disposed above an oil line in the decelerator housing.

Abstract: A parking apparatus for an automatic transmission, may include a sprag shaft having a first portion and a second portion extending from the first portion, wherein an end of the first portion may be inserted in a shaft groove formed in a transmission housing, and a sprag having one end fitted around the first portion of the sprag shaft to rotate about the sprag shaft, a sprag bracket fitted around the first portion of the sprag shall to cover the end of the sprag therein, wherein the second portion protrudes through the sprag bracket and the sprag bracket may be fixed to the transmission housing, and a sprag return spring mounted on the second portion protruding through the sprag bracket, wherein an end of the sprag return spring may be supported by the transmission housing and the other end thereof may be supported by the sprag.

Abstract: A transmission parking lock device comprising a gearwheel with teeth and gaps and a pawl having a pawl tooth. The gearwheel rotates and the pawl pivots about axes that are parallel to each other. The gearwheel teeth each have a first contour and tooth flanks with respect to rotation of the gearwheel. The pawl tooth has a second contour and tooth flanks relative to the rotation of the gearwheel, and the gearwheel has an outer radius. The gearwheel and pawl are kinematically linked by a linear relationship between the pivoting and rotational angles. The first and/or second contour are at least partially circular with a radius of the outer radius of the gearwheel, and the teeth and/or the pawl tooth have, in the area of the front tooth flank of the gearwheel or parking lock pawl, a crown tip relief relative to the outer radius of the gearwheel.

Abstract: A transmission parking lock and an actuating element (1) for the parking lock. The actuating element includes a pull rod (2) and a roller carrier (3) on which are arranged a first roller (13) for rolling on a first rolling surface on the pawl of the parking lock and a second roller (14) for rolling on a second rolling surface on a guide element, such that the roller carrier (3) can be moved along a predetermined path in the longitudinal direction of the pull rod (2). The roller carrier (3) can move longitudinally on the pull rod (2).

Abstract: A method of automatically engaging a parking lock of an automatic or automated transmission of a motor vehicle, which can be engaged by way of a selector device depending on a drive position selected by the driver of the motor vehicle and depending on other operating parameters. In order to achieve as little restriction of the drivability of the motor vehicle as possible, without neglecting the safety of the driver and the surroundings, five different variation of an Auto-P function are proposed for automatically engaging the parking lock: two of these variations are associated with an electrically interrupted ignition circuit of the motor vehicle; two variations are associated with an electrically closed ignition circuit and a simultaneously stopped vehicle drive motor and one variations is associated with an electrically closed ignition circuit and a simultaneously operating drive motor.

Abstract: A simply structured rattling noise reduction device for a vehicle capable of preventing rattling certainly under neutral position. The rattling noise reduction device is applied to a vehicle having a transmission mechanism configured to transmit a torque of a prime mover to an output member through a mating transmission mechanism, and a shifting means capable of selecting a drive position in which the torque of the prime mover is transmitted to the output member and a neutral position in which the torque of the prime mover is not transmitted to the output member, and in which the transmission mechanism is configured to idle any one of rotary members thereof to prevent the torque from being applied to the output member in case the neutral position is selected.

Abstract: A method for controlling a vehicle transmission during a park release event includes engaging a park brake to hold vehicle wheels against rotation, holding against rotation a first component and a second component of an epicyclic gear unit connected to the wheels, releasing the park brake, selecting a transmission drive range, releasing said first component, and operating the transmission in the selected drive range.

Abstract: A parking brake assembly for the driveline of a motor vehicle is disclosed. The parking brake assembly comprises a locking mechanism, an actuator and an unlocking mechanism. The locking mechanism is able to inhibit and release the rotational movement of a shaft in the driveline of a motor vehicle. The actuator actuates the locking mechanism. The locking mechanism comprises a locking element which is linearly movable by the actuator, and a latching element which cooperates with the locking element. The locking element can be transferred into a first axial position in which the latching element assumes a releasing position in which the shaft is rotatable, and wherein the locking element can be transferred into a second axial position in which the latching element assumes a closing position in which the latching element inhibits a rotational movement of the shaft. The unlocking mechanism forcibly unlocks the locking mechanism.

Abstract: A parking lock apparatus for a transmission including a meshing type clutch is provided in which when a parking lock is operated by engaging a parking pawl (43) with a parking gear (41) provided on a gear shaft of a transmission, since a parking rod (51) for operating the parking pawl (43) is provided on a shift rod (44) connected to and operated by an actuator (46) in order to establish a reverse gear position on the transmission, it is possible to establish the reverse gear position with a shift fork (48) by moving the shift rod (44) in one direction from the neutral position, and to carry out the operation of the parking lock automatically without requiring a special actuator by moving the shift rod (44) in another direction from the neutral position, thereby reducing the size and cost of the transmission by enabling the number of components, including the number of actuators (46), to be cut.

Abstract: A parking lock device (1) for an automatic transmission of a motor vehicle. The parking lock device (1) comprises a locking pawl (3) that is fixed to the transmission housing and mounted so that the locking pawl (3) can pivot. The parking lock device (1) has a guiding element (3b) and a guide plate (5) fixed to and supported by the housing in which the guide element (3b) of the locking pawl (3) is guided laterally. One of a low-friction supporting element (7, 8) and an electrically insulating supporting element in a form of an insulating body (107) laterally guides the locking pawl (3).

Abstract: The invention relates to a parking lock control element (1), particularly for an automatic transmission. The control element (1) has an actuator (6) which is coupled to the parking lock pawl, and a retaining device (8, 10, 11, 12) which works with the actuator (6) to secure the parking lock pawl in the disengaged position. According to the invention, the connecting device is characterized in that the retaining device (8, 10, 11, 12) has a blocking slide (8) connected to the actuator (6), and a blocking actuator (11) having a slider gap (10), the width of the slider gap being modified in an actuating manner, wherein the blocking slide (8) can move into the slider gap (10)—when the slider gap is open (10)—releasing the actuator (6). The connecting device according to the invention reduces structural complexity and related costs. At the same time, the control element is comparatively robust with respect to manufacturing tolerances, acceleration forces, vibrations, and temperature stress.

Abstract: A vehicle transmission parking lock system comprising a parking lock for locking or releasing the transmission, an operating device of the vehicle which is electrically connected to the parking lock, a spring for engaging the parking lock, a pressure-controlled release device for disengaging the parking lock, a holding device for securing the parking lock in a released and/or engaged condition, and an emergency release device of the parking lock. When the vehicle drive assembly is static due to the occurrence of a defined event, the emergency release device actuates a device to release the parking lock under pressure control. The holding device retains the parking lock in the released condition for as long as the emergency release device is activated, and the defined event which triggers actuation of the pressure-controlled release device of the parking lock occurs when at least two operating devices are actuated in a defined manner.

Abstract: A system for blocking an output shaft of the engine of an automobile, of a type that includes a toothed wheel coaxially mounted on the shaft, and a first finger mobile between a shaft releasing position and a shaft blocking position in which the first finger is engaged in a gap formed between two teeth of the wheel. The system includes an alignment mechanism capable of aligning a gap between two teeth of the wheel and the first mobile finger, and the first mobile finger is configured to be inserted into the gap without any substantial circumferential clearance.