阅读说明：本技术 用于车辆门的动力驱动门推进器 (Power-driven door mover for vehicle door ) 是由 H·保罗·茨维·林登 克里斯多夫·马修·拉耶夫斯基 康斯坦丁·马诺列斯库 詹姆斯·帕森斯·沙利 于 2017-08-03 设计创作，主要内容包括：一种车辆包括车身和可移动地安装至车身的门。门具有动力闩锁和电动致动器,电动致动器将柱塞从门的内侧延伸和缩回。控制器开锁动力闩锁并且致动电动致动器,使得柱塞接触车身并且推开门。然后,当门打开时,控制器控制电动致动器以缩回柱塞。(A vehicle includes a body and a door movably mounted to the body. The door has a powered latch and an electric actuator that extends and retracts a plunger from the inside of the door. The controller unlocks the power latch and actuates the electric actuator so that the plunger contacts the vehicle body and pushes open the door. Then, when the door is opened, the controller controls the electric actuator to retract the plunger.)

1. A vehicle, comprising:

a vehicle body;

a handleless door movably mounted to the vehicle body and having a powered latch and an electric actuator that extends and retracts a plunger laterally from an inside of the door;

a controller configured to: unlocking the power latch, actuating the electric actuator, wherein the plunger contacts the vehicle body and pushes the door open, and then actuating the electric actuator to retract the plunger.

2. The vehicle according to claim 1, wherein:

the door includes a front side edge and a rear side edge opposite the front side edge;

the door is rotatably mounted to the body by a hinge adjacent the front side edge; and is

The electric actuator and the plunger are located directly adjacent the rear side edge of the door.

3. The vehicle according to claim 1, wherein:

the door includes an outer edge that is spaced apart from the body by 20mm to 250mm to define a gap when the plunger is extended, whereby a user can insert a portion of a hand into the gap to pull the door open.

4. The vehicle according to claim 1, wherein:

the controller is configured to actuate the electric actuator to provide an increased force to move the door.

5. The vehicle according to claim 4, wherein:

the plunger is movable between a retracted position and a fully extended position; and is

The controller is configured to actuate the electric actuator and retract the plunger before the plunger reaches the fully extended position if the load on the plunger exceeds a predetermined maximum value.

6. The vehicle according to claim 1, wherein:

the plunger must be extended to at least partially open the door to enable a user to grasp the edge of the door.

7. A method of opening a vehicle door of a vehicle from the vehicle without grasping an exterior handle of the vehicle, the method comprising:

unlocking the power door latch;

actuating an electric actuator on the vehicle door and extending a plunger laterally from an inside of the vehicle door such that the plunger pushes against a body of the vehicle and partially opens the vehicle door to form a gap between an edge of the vehicle door and the body of the vehicle;

inserting a portion of a hand into the gap and pulling the vehicle door to move the vehicle door further open;

actuating the electric actuator on the vehicle door and retracting the plunger when the door is open.

8. The method of claim 7, comprising:

unlocking the power door latch.

9. The method of claim 7, wherein:

the vehicle door includes a front side edge pivotably connected to the vehicle body;

the vehicle door includes a rear side edge opposite the front side edge; and

the gap is formed between the rear side edge and the body of the vehicle.

10. The method of claim 9, wherein:

the rear side edge is spaced apart from the body by 20mm to 250mm when the plunger is extended.

11. The method of claim 7, wherein:

the vehicle door includes a powered latch; and comprises:

causing a controller to unlock the power latch;

causing the controller to actuate the electric actuator, whereby the plunger is extended and retracted.

12. The method of claim 11, comprising:

configuring the controller to actuate the electric actuator to provide an increased force when an increased force is required to move the vehicle door.

13. The method of claim 12, wherein:

the plunger is movable between a retracted position and a fully extended position; and is

The controller is configured to actuate the electric actuator and retract the plunger before the plunger reaches the fully extended position if the load on the plunger exceeds a predetermined maximum value.

14. The method of claim 7, comprising:

linearly extending and retracting the plunger.

15. The method of claim 7, wherein:

the door includes a front side edge and a rear side edge opposite the front side edge;

the door is rotatably mounted to the body by a hinge adjacent the front side edge; and is

The electric actuator and the plunger are located directly adjacent the rear side edge of the door.

Technical Field

The present invention relates generally to vehicle doors having a powered door opening mechanism, and in particular, to a vehicle door having a powered latch and a powered opening mechanism to partially open the door such that an exterior door handle is not required.

Background

Various vehicle door latching and opening mechanisms have been developed. For example, Passive Entry Passive Start (PEPS) systems typically include a wireless "remote control" that transmits a security code to the vehicle. When a user carrying an authorized remote control approaches the vehicle, the user may insert a hand into the opening adjacent the handle. The sensor detects a user's hand and unlocks the vehicle door. The user then grasps the handle and moves the handle outward to unlock and open the door. In this type of device, the handle is mechanically connected to a pawl in the door latch mechanism such that movement of the handle mechanically moves the pawl to a release position to allow the pawl or catch of the latch to move and disengage the striker to allow the vehicle door to open.

Powered door latching mechanisms have also been developed. The powered door latch mechanism may include a powered actuator that moves a pawl to allow a pawl to move to disengage a striker. Thus, in a powered door latch, there is no need to move the door handle, as the powered actuator moves the pawl to the release position to allow the door to open. The power latch may include a lock mechanism or lock state that requires receipt of an authorization code and/or other input to unlock the power latch prior to unlocking the power latch. Known vehicle doors with powered latches include an exterior handle on the door whereby a user may grasp the handle after the door is unlocked to manually open the door.

Disclosure of Invention

One aspect of the present disclosure is an apparatus that includes a vehicle door without an exterior handle. The vehicle door includes a first side edge portion configured to be pivotally mounted to a vehicle body structure and a second side edge portion opposite the first side edge portion. The vehicle door handle includes a powered latch mechanism having a first electrically powered actuator actuatable to unlatch the latch mechanism to allow the vehicle door to open. The vehicle door also includes an exterior side without an exterior door handle. The vehicle door also includes a powered door pusher mechanism including a plunger and a second electric actuator actuatable to move the plunger between a retracted position and an extended position. The plunger engages the vehicle body and pushes the door to a partially open position to define a gap between the second side edge portion and the vehicle body whereby a user can insert a portion of a hand and pull the door to a fully open position. The apparatus further includes a controller mountable in the door. Alternatively, the controller may be mounted in the host vehicle. The controller is configured to actuate the first electric actuator to unlatch the latch mechanism. The controller is further configured to actuate the second electric actuator a first time to move the plunger from the retracted position to the extended position to partially open the vehicle door. The controller is also configured to actuate the second electric actuator a second time to move the plunger from the extended position to the retracted position when the door is open. After the plunger is retracted, the door may close without interference from the plunger.

Another aspect of the present disclosure is a vehicle that includes a body and a door movably mounted to the body. The door has a powered latch and an electric actuator that extends and retracts a plunger from the inside of the door. The vehicle also includes a controller that unlocks the power latch and actuates the electric actuator such that the plunger contacts the vehicle body and pushes the door open, followed by actuation of the electric actuator to retract the plunger.

Another aspect of the present disclosure is a method of opening a vehicle door from outside of a vehicle without grasping an exterior handle of the vehicle. The method includes unlatching and unlocking the power door latch. The method further includes actuating an electric actuator on the door and extending a plunger from an interior side of the door such that the plunger pushes against a body of the vehicle and at least partially opens the door to form a gap between an edge of the door and the body of the vehicle. The user then inserts a portion of the hand into the gap and pulls the door to move the door further open. The method further includes actuating an electric actuator on the door and retracting the plunger when the door is open.

These and other aspects, objects, and features of the present invention will be understood and appreciated by those skilled in the art upon studying the following specification, claims, and appended drawings.

Drawings

In the drawings:

FIG. 1 is a partial isometric view of a portion of a vehicle door in a closed position;

FIG. 2 is a partial isometric view of a vehicle door in a partially open position;

FIG. 3 is a partial view of a portion of the powered door pusher mechanism showing the plunger in a retracted position;

FIG. 4 is a partial view of a portion of the power door pusher mechanism showing the plunger in an extended position;

FIG. 5 is a partial schematic view of a vehicle door;

FIG. 6 is a partial schematic view of the power latch mechanism;

FIG. 7 is a schematic view of the control system and the power latch mechanism; and

fig. 8 is a flow chart showing operation of the powered door latch and the powered door pusher.

Detailed Description

For purposes of this description, the terms "upper," "lower," "right," "left," "rear," "front," "vertical," "horizontal," and equivalents thereof shall be used in the orientation illustrated in FIG. 1. However, it is to be understood that the invention may assume various alternative orientations and step sequences, except where expressly specified to the contrary. It is also to be understood that the specific devices and processes illustrated in the attached drawings, and described in the following specification are simply exemplary embodiments of the inventive concepts defined in the appended claims. Hence, specific dimensions and other physical characteristics relating to the embodiments disclosed herein are not to be considered as limiting, unless the claims expressly state otherwise.

Referring to fig. 1, a motor vehicle 1 includes first (front) and second (rear) doors 10 and 10A, respectively. The vehicle 1 may include additional doors on opposite sides of the vehicle (not shown). One or more of the vehicle doors 10, 10A, etc. may include a powered door pusher mechanism 20. As discussed in more detail below, the door 10 may also include a powered latch mechanism 106 having a controller 116. An outboard release switch 113 (see also fig. 5) is operatively connected to the controller 116. As shown by broken lines 113A, 113B, and 113C of fig. 1, the external unlock switch 113 may be installed in various positions. The unlock switch 113 may include a conventional movable switch member, a touch sensor, or a capacitive sensor. As discussed in more detail below in connection with fig. 5-7, the user actuates the power latch 106 by actuating the switch 113, thereby unlatching the power latch mechanism 106. The powered latch mechanism may be configured to communicate with the wireless device 6. The wireless device 6 may comprise a conventional remote control or the wireless device 6 may comprise a smart phone programmed to communicate with the controller 116 of the power latch mechanism 106. The controller 116 may be configured to require an authorization security code to be received from the wireless device 6 prior to unlocking the power latch 106. Thus, if the user actuates switch 113, controller 116 does not unlock power latch 106 unless an authorized security code has been received from wireless device 6.

Referring again to fig. 1, the vehicle door 10 includes a first (front) edge portion 12 that is rotatably mounted to a vehicle body structure 103 (see also fig. 5) by hinges 104A, 104B, or the like. The door 10 also includes a second (rear) side edge portion 14 opposite the first side edge portion 12. As discussed in more detail below, the power latch mechanism 106 of the vehicle door 10 includes a first electric actuator, such as an electric motor 192 (FIG. 6), which can be actuated to unlatch the latch mechanism 106 to allow the vehicle door 10 to open. As shown in FIG. 1, the exterior side 16 of the vehicle door 10 is free of an exterior door handle. Further, the exterior side 16 of the door 10 does not include a receptacle or other feature for grasping the door 10 when the door 10 is in the closed position of fig. 1.

The vehicle door 10 also includes a powered door pusher mechanism 20. As discussed in more detail below in connection with fig. 3 and 4, the powered door advancer mechanism 20 includes a plunger 22 and a second electric actuator, such as an electric motor 24, that is actuatable to move the plunger 22 between a retracted position (fig. 3) and an extended position (fig. 4). The vehicle door 10 also includes a controller, such as a latch controller 116, that is configured to actuate a first electric actuator (e.g., an electric motor 192) to unlatch the powered latch mechanism 106. The controller 116 is also configured to actuate a second electric actuator (e.g., the electric motor 24) to move the plunger 22 from the retracted position (fig. 3) to the extended position (fig. 4) to at least partially open the vehicle door 10 to form a gap 26 (fig. 2) between the edge 14 and the adjacent surface 28 of the vehicle door 10. The adjacent surface 28 may comprise the leading edge of the rear door 10A. Alternatively, the surface 28 may comprise a surface of the vehicle body structure 103. The controller 116 is also configured to move the plunger from the extended position (fig. 4) to the retracted position (fig. 3) when the door 10 is open. Because the plunger 22 is retracted when the door 10 is in the open position, the user can close the door without interference from the plunger 22.

Referring to fig. 3 and 4, the powered door pusher mechanism 20 includes a housing 32 and a mounting bracket or mounting plate 34. The powered door pusher mechanism 20 is mounted to the interior side 29 of the door structure 30 by threaded fasteners 36 that extend through openings 35 in the bracket or plate 34. When installed, the powered door pusher mechanism 20 is disposed in the interior space 17 of the door 10. An interior space 17 is defined between the exterior side 16 and the interior side 18 of the door 10. The electric motor 24 is operatively connected to the plunger 22 by a gear train 38 or other suitable means. In the example shown, the gear train 38 includes a rotating gear 38A that engages a rack 38B on the plunger 22. However, it should be understood that a variety of gear arrangements may be employed. The plunger 22 reciprocates between a retracted position of fig. 3 and an extended position of fig. 4. The electric motor 24 is actuatable to move the plunger from the retracted position to the extended position, and the electric motor 24 is also actuatable to move the plunger 22 from the extended position (fig. 4) to the retracted position (fig. 3). The electric motor 24 may be operably connected to the controllers 116A-116D and the backup power sources 152A-152D of the power latches 106A-106D (fig. 7). It should be understood that a solenoid or other suitable powered actuator may be employed in place of the electric motor 24. For example, the plunger 22 may be biased to an open or closed position by a spring, and the solenoid coil may be actuated to overcome the bias and move the plunger 22. Thus, it should be understood that the controller 16 may provide powered actuation of the plunger 22 in the extension and retraction directions by controlling a powered one-way actuator associated with a spring.

The powered door pusher mechanism 20 also includes one or more sensors 40 that provide signals to the latch controller 116 regarding the position of the plunger 22. The sensor 40 may include one or more hall effect sensors and/or microswitches. The hall effect sensors provide a particular vehicle current versus travel (hall count) curve stored in the controller 116. The controller 116 may use this data to determine (or know) the full travel position of the plunger 22 (fig. 4).

The vehicle door 10 may also include a door belt stop mechanism 42 (fig. 5). The door strap mechanism 42 provides one or more stops or stops to hold the door 10 in one or more specific, predetermined partially open positions and/or fully open positions. Typically, the door 10 tends to remain stationary in the check or stop position. However, if the user applies sufficient force to the door 10, the door 10 may move away from the stopper in the opening or closing direction. The stop mechanism 42 may have a check or stop position corresponding to the fully extended position of the plunger 22 (fig. 4). Thus, the stop mechanism 42 tends to hold the door 10 in the first checking position corresponding to the position shown in fig. 4. Various types of door strap (pawl) mechanisms are generally known in the art and therefore a detailed description of the stop mechanism 42 is not believed necessary.

As discussed in more detail below, after the electric motor 24 is initially actuated to partially open the door 10 by moving the plunger 22 from the retracted position (fig. 3) to the extended position (fig. 4), the electric motor 24 is actuated to retract the plunger 22 to the retracted position (fig. 3). Even after the plunger is retracted (fig. 3), the stop or backstop provided by the mechanism 42 tends to hold the door 10 in the first checking position (fig. 4). The angular position sensor 44 (fig. 5) may be operatively connected to the latch controller 116. The sensor 44 provides a signal indicative of the angular position of the door 10 relative to the vehicle body structure 103. The controller 116 may be configured to retract the plunger 22 only if the door 10 has been rotated open to or beyond the first verification position of fig. 4. This ensures that the plunger 22 does not retract until after the user has opened the door 10 to or beyond the first checking position of fig. 4 to prevent pinching of the user's hand. It should be appreciated that the sensor 44 is optional and that the latch controller 116 may be configured to retract the plunger 22 immediately after extending the plunger 22. Alternatively, the controller 116 may be configured to retract the plunger 22 after a predetermined period of time (e.g., 3 seconds) after the plunger 22 is initially moved to the extended position of fig. 4.

The latch controller 116 may use data from the sensor 40 to determine whether an object has been encountered. For example, if the controller 116 initially actuates the electric motor 24 and the plunger 22 begins to extend from the retracted position of fig. 3, but the door encounters an object that prevents the plunger 22 from moving to the fully extended position (fig. 4), the controller 116 may be configured to retract the plunger 22 even if the plunger 22 fails to reach the fully extended position of fig. 4. The latch controller 116 may be configured to apply Pulse Width Modulation (PWM) control to provide variable power to the electric motor 24 to control the force generated by the electric motor 24 and/or the speed at which the plunger 22 is extended and/or retracted. The controller 116 may be configured to increase or decrease the power supply to the electric motor 24 as needed to maintain the target speed while moving the plunger 22 at a predetermined constant target speed. If the door 10 encounters an object that requires increased power to maintain the speed of the plunger 22, the controller 116 may be configured to retract the plunger 22 if the power requirement to maintain the target speed exceeds a predetermined level. Further, when the door 10 is in the fully closed position, a large force may be required to initiate movement of the door 10 due to ice build-up or other physical connection/friction/adhesion between the door 10 and the door body 103. The controller 116 may provide increased power to the electric motor 24 during the initial movement from the retracted position of fig. 3 to provide the increased force required to initially move the door 10.

The plunger 22 may include an end surface 23, the end surface 23 contacting the surface 21 of the vehicle body 103 to push the door 10 from the closed position (fig. 3) to the first testing position (fig. 4). When the door 10 is in the first inspection position, a gap "G" is formed between the interior side 18 of the door 10 and the vehicle body 103. As shown in fig. 2, the gap G is preferably large enough to allow the user 2 to insert the hand 4 of the user 2 into the gap G. The gap "G" is preferably at least about 20mm, more preferably at least about 50 mm. Typically, the gap "G" may be in the range of about 20mm to about 250 mm. Further, the stroke of the plunger 22 is substantially equal to the gap G. Since the interior space 17 of the door 10 is limited, the length of the plunger 22 and the corresponding size of the gap G may be limited by space issues.

As discussed above, in addition to the electric motor 24, the powered door mover mechanism 20 may include a solenoid or other powered mechanism. Further, it should be understood that the plunger 22 may have other configurations, and the present invention is not limited to the particular linear plunger configuration shown and described above.

With further reference to fig. 5-7, the door 10 includes a door structure 102 that is movably mounted to a vehicle structure 103 using hinges 104A and 104B in a known manner. The powered latch 106 is operatively connected to a latch controller 116. The controller 116 may comprise a separate control module as part of the power latch 106, and the vehicle 1 may comprise a power latch 106 at each door of the vehicle 1. The door 10 may also include an internal unlock input member, such as an internal unlock switch 112 operatively connected to the controller 116, and an external unlock switch 113 also operatively connected to the controller 116. An inside unlock switch 112 is provided on the inside of the door 10 where it is accessible from the vehicle interior, and an outside unlock switch 113 is provided on the outside of the door 10 and is accessible from the outside of the vehicle 1 when the door 10 is closed.

To exit the vehicle 1, the user 2 actuates the inside unlock switch 112 or the outside unlock switch 113 to generate an unlock request to the controller 8. If the latch 106 is unlocked and/or certain predetermined operational limits or conditions exist, the controller 116 generates a signal so that the powered latch 106 is unlocked upon activation of the internal unlock switch 112. The door 10 may also include an unlock input member, such as an unlock switch 114 mounted to the inside of the door 10. The unlock switch 114 is operatively connected to the controller 116. The controller 116 may be configured to store a door or latch locked or unlocked state that may be changed by actuating the unlock switch 114.

To enter the vehicle 1, the user 2 transmits a security code to the controller 116 using the wireless device 6 and then actuates the external unlock switch 113. The operation of the powered door mover 20 for accessing the vehicle 1 is discussed in more detail below in conjunction with fig. 8.

The controller 116 may be configured (e.g., programmed) to deny an unlock request generated by actuating the inside unlock switch 112 or the outside unlock switch 113 if the controller 116 determines that the power latch 106 is in the locked state. The controller 116 is preferably a programmable controller that is configurable to unlock the power latch 106 according to predetermined operating logic that programs the controller 116. However, the controller 116 may include circuitry and components configured to provide the desired operating logic. As used herein, the term "controller" may refer to one or more processors, circuits, electronic devices, and other such components and systems arranged to provide the desired control.

With further reference to fig. 6, the powered latch 106 may include a movable retaining (latching) member, such as a pawl 180 that pivots about a pivot 182 and a pawl 186 rotatably mounted for rotation about a pivot 188. The pawl 186 is movable between a disengaged or unlocked position 186A and a latched or engaged configuration or position 186B. In use, when the door 10 is open, the pawl 180 is normally in the extended position 180A. When the door 10 is closed, the surface 190 of the pawl 180 contacts the striker 184 mounted to the vehicle structure. Contact between the striker 184 and the surface 190 of the pawl 180 rotates the pawl 180 about the pivot 182 in the direction of arrow "R1" until the pawl 180 reaches the closed position 180B. When the pawl 180 is in the closed position 180B and the pawl 186 is in the engaged position 186B, the pawl 186 prevents the pawl 180 from rotating to the open position 180A, thereby preventing opening of the door 10. The pawl 180 may be biased by a spring or the like (not shown) to rotate in a direction opposite arrow R1 such that the pawl 180 rotates to the open position 180A unless the pawl 186 is in the engaged position 186B. The pawl 186 may be biased by a spring or the like (not shown) in the direction of arrow R2 such that when the door 10 is closed, the pawl 180 rotates to the closed position 180B and the pawl 186 rotates to the engaged position 186B as the striker 184 engages the pawl 180. The latch 106 may be unlocked by rotating the pawl 186 in the direction opposite the arrow R2, allowing the pawl 180 to rotate from the closed position 180B to the open position 180A.

A powered actuator, such as an electric motor 192, may be operatively connected to the pawl 186 to rotate the pawl 186 to the disengaged or unlocked position 186A. The controller 116 may unlock the powered latch 106 to the unlocked configuration or state by causing the powered actuator 192 to rotate the pawl 186 from the latched or engaged position 186B to the unlocked configuration or position 186A. However, it should be understood that various types of power latches may be employed, and that the power latch 106 need not include the pawl 180 and the power pawl 186, as shown in FIG. 6. For example, the powered actuator 192 may be operatively interconnected with the pawl 180 using a mechanical device other than the pawl 186 to move the powered latch 106 between the latched and unlatched conditions. Typically, the vehicle door 10 may be pulled open if the powered latch 106 is in the unlatched state, but when the powered latch 106 is in the latched state or configuration, the powered latch 106 holds the vehicle door 10 in the closed position.

With further reference to fig. 7, the latching system 125 can include a driver side front powered latch 106A, a passenger side front powered latch 106B, a driver side rear powered latch 106C, and a rear passenger side powered latch 106D. The powered latches 106A-106D are configured to selectively hold the respective driver and passenger front and rear doors of the vehicle 1 in a closed position. Each power latch 106A-106D may include a controller 116A-116D, respectively, that is connected to a medium speed data network 118 including network cables 118A-118D. The controllers 116A-116D are preferably programmable controllers, but may include circuitry configured to provide the desired operating logic. Data network 118 may include a medium speed controller area network ("MS-CAN") operating in accordance with known industry standards. Data network 118 provides data connectivity between controllers 116A-116D and digital logic controller ("DLC") gateway 120. DLC gateway 120 is operatively connected to a first data network 122 and a second data network 124. The first data network 122 may include a first high speed controller area network ("HS 1-CAN") and the second data network 124 may include a second high speed controller area network ("HS 2-CAN"). Data networks 122 and 124 may operate according to known industry standards. The first data network 122 is connected to an instrument panel set ("IPC") 126, a restraint control module ("RCM") 128, and a powertrain control module ("PCM") 130. The RCM 128 uses data from the acceleration sensors to determine whether a crash event has occurred. The RCM 128 may be configured to deploy occupant restraints and/or shut off the vehicle's fuel supply in the vent upon detection of a collision. The RCM 128 may be configured to generate an emergency notification system ("ENS") signal if a collision occurs. The ENS signal may be transmitted over one or both (preferably both) of the data networks 122 and 124. The RCM is also preferably directly ("hardwired") connected to each of the power latches 106A-106D by wires (not shown) so that the power latches 106A-106D receive the ENS signal even if the data networks 122 and 124 are inoperable. The first high speed data network 122 may also be connected to a display screen 132, and the display screen 132 may be located inside the vehicle to provide a visual display to the vehicle occupants. The second high speed data network 124 is operatively connected to an anti-lock brake ("ABS") module 134, the module 134 including sensors that measure vehicle speed.

The system 125 also includes a body control module ("BCM") 140 connected to the first high speed data network 122. The body control module 140 is also operatively connected to the power latches 106A-106D by the data lines 136A-136D. The controllers 116A-116D may also be directly connected ("hardwired") to the control module 140 by electrical conductors such as wires 156A-156D, respectively. The wires 156A-156D may provide redundant data connections between the controllers 116A-116D and the controller 140, or the wires 156A-156D may comprise unique data connections between the controllers 116A-116D and the controller 140. The control module 140 may also be operatively interconnected to a sensor (not shown) that signals the control module 140 if the vehicle door is ajar. The control module 140 is also connected to a host vehicle power source, such as a battery 148. Each power latch 106A-106D may be connected to the host vehicle power supply 148 by a connector 150A-150D. The power latches 106A-106D may also include a backup power source 152, which may be used to actuate the power actuator 192 in the event of an interruption or loss of power supply to the host vehicle power source ("VPWR") 148. Backup power sources 152A-152D may include capacitors, batteries, or other electrical energy storage devices. Typically, the backup power sources 152A-152D store sufficient electrical energy to provide temporary operation of the controllers 116A-116D and multiple actuations of the power actuator 192 to allow unlocking of the vehicle door in the event of a failure or disconnection of the primary power source/battery 148.

Each power latch 106A-106D is also operatively connected to a two pole (e.g., two pole normally open or one pole normally open and one pole normally closed) internal unlock switch 112A-112D, respectively, that provides a user input (unlock request). The powered latches 106A-106D are also operatively connected to external unlock switches 154A-154D, respectively. The controllers 116A-116D are also operatively connected to the unlock switch 114 (fig. 4). The controllers 116A-116D may be configured to store a lock state ("locked" or "unlocked"), and to use the lock state to control the powered latches 106A-106D.

With further reference to fig. 8, the latch controller 116 (or the host vehicle controller 140) may be configured to operate in accordance with the program 48 to permit vehicle entry. After starting at 50, the controller 116 determines whether an unlock request (e.g., a wireless security code for the wireless device 6) has been received at step 52. If no unlock request is received, the controller 116 does nothing, as shown at step 54. If an unlock request is received at step 52, the controller 116 unlocks the power latch 56 at step 56. It should be understood that the controller 116 may have stored "locked" and "unlocked" states, such that the unlocking step 56 may include changing an electrical (memory) state or "flag" in the controller 116. Further, it should be understood that the latch controller 116 may be configured to require receipt of a specific authorization/identification (e.g., a unique security code wirelessly transmitted by the wireless device 6) prior to unlocking the power latch 106.

If an unlock request is received at 58, the process continues to step 62 and the power latch 106 is unlocked (e.g., the electric motor 192 (fig. 6) is actuated). If no unlock request is received at step 58, no further action is taken by the controller 58. After step 62, at step 64, the controller 116 actuates the power door advancer mechanism by actuating the electric motor 24, and the controller 116 monitors the current and position of the plunger 22. The process then continues to step 66 and the controller 116 adjusts the Pulse Width Modulation (PWM) as needed. The controller 116 may be configured to maintain the plunger 22 at the target speed, if applicable. However, it should be understood that the controller 116 may be configured to control the plunger 22 using PWM (or other suitable means) according to other predetermined criteria.

If the plunger stops before reaching the fully extended position, as shown at step 68, the controller 116 retracts the plunger, as shown at step 70. If the plunger 22 reaches the fully extended position (step 72), the controller 116 retracts the plunger 22.

It should be understood that numerous changes and modifications may be made to the aforementioned structures without departing from the concepts of the present invention, and further it should be understood that such concepts are intended to be covered by the following claims unless these claims by their language expressly state otherwise.