FR2725241A1 - POWER CONTROL SYSTEM OF A DRIVE MOTOR - Google Patents

Abstract

a) Power control system of a drive motor, with an adjusting member (4) driven by an adjusting device (12) and the position of which controls the power of the motor, the adjusting device (12) being able to be put into operational engagement with the member (4) by a transmission means (10). b) Control system characterized in that, during the operational engagement of the transmission means (10) with the adjustment member (4), the transmission means (10) deploys (20) whose direction departs from the direction of operation (14) and in that an actuation detector (30) connected to the housing (40) is provided which detects the deployment (20) of the transmission means (10).

Description

i

  "Power control system of a drive motor

"

State of the art.

  The invention relates to a power control system for controlling the power of an engine with an adjusting member which can be moved by means of an adjusting device relative to a housing, an adjusting member whose position controls the engine power, system into which the adjuster can be put, at least indirectly via a transmission means driven by the adjuster in a

  direction of operation in operational contact with the

adjustment gane.

  There are power control systems used to control the power of an engine, for example for vehicles, with a regulating member which can be

  move relative to a housing and whose position con-

  checks the engine power. The adjusting member can be moved by means of an adjusting device and the adjusting device can be put into operational engagement

  with the regulating member by means of a transmission means

  if we. In the case of a known power control system, it is possible, using a potentiometer, to determine

  the position of the adjuster and, with another poten-

  tiometer, determine the position of the transmission means.

  Using the two potentiometers it can be determined whether the transmission means is in operational connection with

  the regulating member. However, as the two potentiomè-

  very have different characteristic curves and tolerances, this type of determination, used to know if the adjustment device is in operational connection with

  the regulating member is problematic. The two potentio-

  meters must also be very precisely calibrated,

  which represents a considerable cost.

  There is also a power control system in which there is provided, between the regulating member and the transmission means, what is called a driven switch which delivers an electrical switching signal when the transmission means is arrived in engagement with the regulating member or when the transmission means comes off from the regulating member. However, this driven switch has the disadvantage that a mobile electrical power

  must reach the switch, or that the electric power

  that must be connected to the driven switch by means of a contact track over which a sliding contact can pass. There are power control systems in the case of which the adjusting member, in addition to movement by the control device, can be further moved by an actuating device. When the regulator is

  moved by means of the actuating device, the device

  adjustment tif is then no longer engaged with the

  setting. This situation, namely whether the

  glage is engaged or not with the adjusting member,

  can be determined using the two potentiometers

  sensing the position of the adjusting member and the position

  of the transmission medium, or using the switch

  trailed, or with a switch that controls the position of the actuator. The switch that controls the

  position of the actuating device, however, has the

  this type of detection does not always deliver a

  correct signal due to the game that exists in the action

  between the actuating device and the re-

  glage. Advantages of the invention. The power control system produced according to the invention is characterized in that, during the operational engagement of the transmission means with the member

  the transmission means deploys

  ment whose direction deviates from the operating direction and in that there is an actuation detector connected to the

  box which detects the deployment of the transmission means

if we.

  The power control system according to the

  vention a, compared to the system according to the state of the art-

  especially the advantage that can be determined

  in a simple, safe and reliable way, the coming into operative

  between the control device and the adjustment member, without it being necessary to have

mobile power lines.

  According to other characteristics of the invention

  tion: - the adjustment member can also be moved by means of an actuation device, - the actuation detector comprises a contact which closes during deployment of the transmission means,

  - the actuation detector comprises a contact which opens

  vre during deployment of the transmission means.

  The system of return to the initial state which

  shovel the means of transmission in the opposite direction of its

  folding has the advantage of increasing considerably more

  the reliability of the actuation detector.

  If the means of transmission is carried out under the

  form of a worm screw mounted in a mobile way for the de-

  bending in the axial direction, we then obtain

  advantageous a particularly reliable embodiment

ble and simple to manufacture.

  Drawings. The present invention will be described below in more detail using embodiments of

  the invention shown in the accompanying drawings in the-

  which: - Figures 1 to 7 show different shapes

  particularly constituted

  tagger, a power control system according to the

vention.

Description of the invention.

  The power control system consisting of

  The invention can be used to control different drive motors. The engine is, for example, a throttling engine. In this case, the adjusting member comprises, for example, a throttling valve. The engine can also

  be a Diesel engine. In the case of Diesel engines the-

  among other things, an adjusting rod consists of a

  timing which controls the power of the Diesel engine. The motor may as well still be an electric motor. In this

  case the adjusting member comprises for example a potentiometer

  tre which regulates the voltage supplied to the electric motor.

  We will explain the construction and the mode of operation of the power control system produced

  according to the invention from power control systems

  sance suitable for throttle motors. The organ of re-

  Glage includes for example a throttle valve. But the regulating member can also be easily adapted to

other drive motors.

  Figure 1 shows a first example of realization

tion selected.

  Figure 1 shows a section of a hose

  mission 2. Through the intake pipe 2 it is possible to bring a gas mixture to an engine not shown. In the case

  motor, for example, a throttle motor.

  The gas mixture supplied to the engine is adjusted using a

  adjusting member 4. The adjusting member 4 includes a

  throttle pet 5, a throttle valve pin 6 and an adjusting member lever 8 with a stop member

setting 4a.

  The throttle valve 5 of the adjusting member 4 is rotationally connected to the axis 6 of the throttle valve. The lever 8 of the adjusting member is also connected in rotation with the axis 6 of the throttle valve. The throttle valve 5 and the lever 8 of the adjusting member are mounted so as to be able to rotate on the throttle valve axis 6 with respect to the intake pipe 2. The throttle valve 5 is located inside the intake pipe 2 and the lever 8 of the adjusting member is arranged outside the pipe

  2. To better recognize the constituent parts

  essential elements, we have shown the intake pipe

  cut, but there is also shown the lever 8 of the gold-

  adjustment shaft located above the cutting plane on

  representation, for a better understanding.

  Outside the intake pipe 2, a means of transmission 10 has been mounted on the axis 6 of the throttle valve, so that it can rotate.

  transmission 10 can pivot with respect to axis 6 of the

  throttle fart. The transmission means 10 is entrained

  born by an adjustment device 12 disposed outside the intake pipe 2. As the adjustment device 12 is located outside the intake pipe 2 and above the

  drawing plan, we can't see the device

  setting 12 in the chosen direction of sight, but it has been shown

  nevertheless felt in dashes in Figure 1.

  The adjusting device 12 can drive the transmission means 10 clockwise (FIG. 1) and anti-clockwise, which is shown in the drawing by a double

  symbolically arrow. The double arrow is represented

  accordingly as the operating direction 14 of the

means of transmission 10.

  The throttle valve 5 of the adjusting member 4 can be moved counterclockwise by a

  shows in the closing direction and in the direction of the ai-

  watch faces in the opening direction The movement

  cement of the throttle valve 5 in the opening direction is represented accordingly as the direction of the full load 28 and is symbolically represented in the drawings by an arrow drawn in dashes and provided with

the reference numeral 28.

  The adjusting device 12 can move, by means of a stop 10a provided on the transmission means, the adjusting member 4 in the direction of the full load 28. The adjusting device 12 acts on the stop 10a of the transmission and the stop 4a of the adjusting member acts on the adjusting member 4. Between the stop 10a of the means

  of transmission and the center of rotation of the means of trans-

  mission 10 there is a certain radial distance.

  In the case of the embodiment chosen, the adjusting member 4 can also be moved by means of an actuating device 16. One end of the actuating device 16 can act on the adjusting member 4. The

  Figure 1 shows only the end of the acces-

  operation 16 which can be put into operational gear

  with the lever 8 of the adjusting member 4.

  A spring 18 has also been provided, not representing

  both for reasons of visibility, in FIG. 1, that the two ends 18a, 18b of the spring 18. The end 18a engages on the intake pipe 2 and the end 18b acts, by means of the lever 8 of the adjusting member, on the adjusting member 4 anticlockwise, that is to say anticlockwise

sense of full load 28.

  The transmission means 10 is mounted so as to be able to rotate on the axis 6 of the throttle valve with sufficient radial clearance. If the transmission means 10 is driven by the adjustment device 12 in the clockwise direction and if in this case the stop 10a of the transmission means is in operational engagement with the stop 4a of the adjustment member 4 , the transmission means 10 is then in this way deployed radially in the region of the axis of rotation due to the radial distance

  between the stop 10a of the transmission means and the axis of ro-

  tation of the transmission means 10. This radial deployment

  is symbolically represented in Figure 1 by a arrow

  che with the reference numeral 20. This arrow is

  shown below as deployment 20.

  In the case of the embodiment shown

  tee in FIG. 1 the operating direction 14 of the transmission means 10 extends along an arc of a circle around an axis concentric with the axis of rotation 6 of the throttle valve. The deployment 20 extends radially by

  relation to direction of operation 14.

  There is further provided a device for returning to the initial state 22 represented symbolically by an arrow in FIG. 1. When there is no coming into operational engagement between the transmission means 10 and the member setting 4, i.e. when the means of

  transmission 10 is no longer engaged with the re-

  setting 4, the device for returning to the initial state 22 is on standby

  so that the deployment 20 reverses.

  In the case of the power control system,

  an actuation detector 30 has also been provided.

  actuator 30 is constituted for example so that the deployment 20 of the transmission means 10 closes a contact provided in the actuation detector 30. When the deployment 20 disappears again, this contact then opens again. The actuation detector can

  however, also be constituted in such a way that the

  bending 20 opens the contact and in such a way, when the deployment 20 reverses, that the contact of the

  actuator 30 closes again.

  The drawings show an arrow for-

  view of the reference numeral 28. The direction of this arrow is represented consequently as the direction of the full load 28. In the case of a displacement of the lever 8 of

  the regulating member and, in this way, the shut-off valve

  regulation 5 of the adjusting member 4 in the direction of full load 28 represented by the arrow, the valve

  throttle 5 opens the passage through the intake hose

  mission 2, which leads to an increase in the

  sance delivered by the motor not shown.

  The actuation of the actuation detector 30 and

  other possibilities of advantageous realization of the

  bending 20 of the transmission means 10 will still be

  explained in more detail from the examples of realizations

tion that will follow.

  Figure 2 shows another example of implementation.

tion selected preferably.

  In all the figures the same parts or those which function in the same way are provided with the same references. Insofar as the opposite has not been mentioned or insofar as it has not been shown in the drawings, what will have been mentioned and represented from one of the exemplary embodiments will also be worth in the case of the other exemplary embodiments and, also

  as long as nothing else will emerge from the explanations

  the details of the different examples of implementation

can be combined with each other.

  In the case of the embodiment shown

  tee in Figure 2, the adjusting member 4 comprises the throttle valve 5, the axis 6 of the throttling valve and the lever 8 of the adjusting member. One end of the axis 6 of the throttle valve is bent on the side so that a lever is formed at this end, thanks to

  which we can rotate the axis 6 of the check valve -

  is lying. The lever 8 of the adjustment member is articulated at

  this end of the axis 6 of the throttle valve. A die-

  linear placement of the lever 8 of the adjusting member

  due to a pivoting movement of the throttle valve 5.

  The actuator 16 is essential-

  ment formed by an actuating lever 32, a Bowden cable 34, an operating element 36 and a return spring or several return springs 38a, 38b, 38c. On the lever

  actuation 32 there is a stop 32a and a stop 32b.

  When the actuation lever 32 is actuated in the

  direction of full load 28, lever 8 of the retaining member

  glage 4 can be driven in the direction 28 of full load by the actuating device 16 by means of the stop 32a of the actuating lever 32. When the actuating element 36 is released the return springs 38a, 38b drive the actuating lever 32 in the opposite direction to the direction 28 of the full load and, by means of the stop 32b, it is ensured that the lever 8 of the adjusting member is

  recalled opposite to the direction of full load 28.

  The spring 18 also drives the adjusting member 4 in the direction

  contrary to the meaning of full load 28.

  The parts shown in the drawings are shown

  tees in a housing 40. For reasons of visibility, only the spare parts 40a have been shown from the housing 40,

  b, 40c, 40d, 40e, 40f, 40g, 40h, 40i.

  You can move, using the element of ma-

  work 36, the actuation lever 32 in the direction of full load 28 until this actuation lever 32

  comes into abutment on the housing part 40a. When the-

  actuating plate 36 is not actuated, the actuating lever

  Due to the return springs 38a, 38b, 32 is located on the fixed part of the housing 40b.

  The adjustment device 12 comprises a servo

  tor 42 with a drive shaft 44.

  The transmission means 10 comprises an endless screw 46 mounted so as to rotate in the housing part 40c and the housing part 40d, as well as a driver which can slide 48. The operating direction 14 of the screw

  endless 46 of the transmission means 10 is that of the ro-

  tation of the worm 46 around its longitudinal axis

  nal, which is shown in Figure 2, so

  symbolic, by a double curved arrow provided with the re-

digital reference 14.

  The worm 46 is provided with a thread 50.

  The thread 50 meshes with a contrary thread 52 provided on the driver 48. Depending on the direction of rotation of the worm 46, the driver 48 is moved in the direction 28 of the full load or in the opposite direction. The possibility

  movement of the driver 48 is limited, in the opposite direction

  milking in the direction 28 of the full load, through the housing part 40e and, in the direction 28 of the full load, through the housing part 40f. The mobility of the coach 48 in

  the direction 28 of full load is limited in a way

  significantly stronger, in the chosen embodiment, than the possibility of movement of the lever 8 of the adjustment member via the actuating device 16. For this reason, the possibility of movement of the setting 4 via the

  setting 12 is noticeably more limited than through

  diary of the actuating device 16.

  But we can also modify the example of realization

  tion in such a way that the adjuster 12 of]! the adjusting member 4 can move until full load. For this it is only necessary to do without the stop 32b and, instead of the housing part 40f, to use as a stop for the driver 48 the part of the housing 40i further depressed in the direction 28 of full load. For this reason the stop 32b and the parts of

  housing 40f, 40i are shown in dashes.

  Between the worm 46 and the drive shaft

  ment 44 of the adjusting device 12, a drive is provided

  torque torque 54. Torque drive

  rotation is provided so that one can trans-

  put a rotational movement of the output shaft 44, without change, to the worm 46. The torque drive 54 does not, however, transmit force in the axial direction (relative to the worm 46 ). The worm 46 is freely movably mounted inside the housing parts 40c, 40d in the axial direction, until an appendage 56 or an appendage 58 of the worm 46 comes into abutment on the housing part

40c.

  The actuation detector 30 comprises a first

  link contact 61 and a second contact 62.

  In the embodiment shown in Figure 2 the reset device 22 is in the form of a leaf spring inserted in the housing part 40h. The other end of the leaf spring

  acts in the axial direction on the worm 46. The device

  tif reset 22 drives the appendage 58 of the worm 46 against the housing part 40c and tends in this way to raise the deployment 20. The force of the reset device 22 is very small and just large enough, as friction requires, to bring the transmission means 10 back with the

  worm 46 and driver 48 against the deployment

ment 20.

  When the deployment 20 of the worm 46 is large enough for the appendage 56 to be actuated completely or at least almost completely against the housing part 40c (displacement of the worm 46 to the left, relative to the figure 2), the contacts 61, 62 are then electrically connected to each other. If the

  worm 46 is with its appendix 58 complete-

  or at least almost completely on the box part

  tier 40c (movement of the endless screw 46 to the right, with respect to FIG. 2) the electrical contact between the two contacts 61, 62 is then open. The opening or

  closing of the electrical contact is controlled by the

  median of a first electric line 61a and through the

  intermediate of a second electrical line 62a of a control unit 66. The first electrical line 61a is electrically fixedly connected to the first contact 61 and the

  second electrical line 62a is connected to the second connector

tact 62.

  The adjustment position of the lever 8 of the adjustment member and, in this way, the pivoting angle of the throttle valve 5 are detected using a

  displacement 68. Another displacement detector 69 de-

  tect the adjustment position of the driver 48 of the transmission means 10. The signals of the displacement detectors

  68, 69 are also brought to the control unit 66. Se-

  depending on the quality of the setting you want for the action-

  nement of the adjusting member 4 it is possible, if necessary, to do without the displacement detector 68 and / or the

displacement 69.

  In the area of the housing part 40b there is

  contact 70. Contact 70 controls the reset position.

  setting of the operating lever 32. When the operating lever

  tction 32 rests on the housing part 40b, the

  contact 70 is then closed and, when the operating lever

  ment 32 is lifted from the housing part 40b, the contact then opens. The contact signal 70 is brought to

  the control unit 66. Using the contact 70, it is possible to

  complete if the operating element 36 is actuated or not

  and we can therefore exert an influence on the

  setting of the adjusting member 4. Depending on the quality of the adjustment desired when adjusting the adjusting member 4, it is possible to

  if necessary do without contact 70.

  The servomotor 42 can turn the screw without

  end 46 in both directions of rotation, which is shown

  felt in FIG. 2 by the double arrow which symbolizes the direction of operation 14. According to the direction of rotation of the worm 46 the driver 48 moves in the direction of full load 28 or in the opposite direction. The driver 48 can move inside the housing parts 40e

and 40f.

  When the operating element 36 has been completed

  ment or almost completely actuated, the lever 78 of the adjusting member is then actuated by means of the actuating lever 32 in the direction 28 of full load whereby the stop 4a of the lever 8 of the member

  adjustment 4 is lifted from the stop 10a of the coach 48.

* In this case it lacks the force oriented in the direction of the

  bending 20 (to the left in FIG. 2) by the adjusting member 4, by means of the driver 48, on the worm screw 46. The appendix 58 of the worm screw 46 rests more or less on the housing part 40c. This means that in

  this operating position there is no deploy-

  ment 20 of the transmission means 10. In this way the

  electrical contact between the contacts 61, 62 of the actuation detector 30 is open. Thus, the control unit 66

  knows that there is a working state in the case of-

  which control of the adjusting member 4 is not carried out

  killed by the adjuster 12, but differently.

  When the operating element 36 is not action-

  born, the actuating lever 32 of the actuating device

  ment 16 then rests on the housing part 4b and there is a certain distance between the stop 32a and the lever 8 of the adjusting member. In this case the spring 18 acts by means of the lever 8 of the adjusting member on the driver 48 of the transmission means 10. The driver 48 in turn acts on the worm 46 in the direction of deployment 20, and the appendix 56 is actuated against the housing part 40c. In this way the electrical contact between the contacts 61, 62 of the actuation detector 30 closes. The control unit 66 then knows that there is a

  operating state in the case of which the control unit

  glage 4 is actuated by means of the adjustment device 12.

  To obtain a high quality of adjustment when moving the adjusting member 4, it is important to

  find out whether the operating state prevails in the case of-

  which adjustment member 4 is moved by means of the device

  tif of adjustment 12. Depending on the operating state, corresponding suitable programs are deposited in the control unit 66, which can be called up for the state of

corresponding operation.

  Figure 3 shows another example of implementation.

  tion preferentially selected.

  Figure 3 shows a fragment of the selected embodiment. The unrepresented parties of

  power control system match essential-

  ment to the parts shown in figure 2 of the

power control.

  In the case of the embodiment shown

  tee in figure 2 the reset device

  22 actuates the worm screw 46 of the transmission means 10.

  On the contrary, in the embodiment shown in the

  figure 3 the device for resetting to the initial state 22 ac-

  the coach 48 of the transmission means 10. The

  strength of the reset device 22 is chosen

  sie so that the appendix 58 is not compressed too strongly against the housing part 40c, so as not to maintain, in particular between the thread 50 of the worm 46 and the counter threading of the driver 48, a

too much friction. Figure 3 shows the operating state in which the lever 8

  of the adjusting member 4 is lifted from the driver 48 of the transmission means 10, so that the contact of the actuation detector 30 is open. The operating state has been represented in 10 in the case of which there is no deployment of the means of

transmission 10.

  Figure 4 shows another example of implementation.

particularly preferred.

  Unlike Figure 2, in the case of

  the embodiment shown in Figure 4, the con-

  tact between the two contacts 61, 62 is open when the screw

  endless 64 is deployed in the direction of deployment 20.

  Figure 5 shows another example of implementation.

  tion selected for a power control system

according to the invention.

  In the case of the embodiment shown

  tee in Figure 5 the reset device 22 constituted in the form of a leaf spring also assumes

  the second contact function 62. The leaf spring of the device

  positive reset 22 is inserted into the housing part 40h in such a way that when the screw without

  end 46 is deployed in the direction of deployment 20, the res-

  leaf spell exerts a restoring force on the worm screw 46 and at the same time the electric line 62a which passes through the leaf spring comes into contact with the first

contact 61.

  In addition, FIG. 5 provides a third contact 63 while, when the worm screw 46 is not deployed, the electrical contact between the first contact 61 and the second contact 62 is open. The three contacts 61, 62, 63 of the actuation detector 30 have the advantage that two contacts are available, one of the two contacts being open and the other contact being closed. If the two contacts are simultaneously open or closed, the control unit 66 then knows that there is an electrical fault and

can react accordingly.

  Figure 6 shows another example of implementation.

  tion, preferentially selected.

  Unlike other examples of construction

  in the case of the exemplary embodiment, there is no

  presented in FIG. 6, of mechanical contact between the endless screw 46 of the transmission means 10 and the actuation detector 30. A detector element 74 has been placed on the endless screw 46. In the case of displacement in the direction of deployment 20 of the worm 46, the element of

  detector 74 moves relative to the action detector

  30, what the actuation detector 30 can

  finish without contact thanks to what in the detector

  actuation 30, depending on the embodiment, a contact is

green or closed.

  Figure 7 shows another preferred example of

realization of the invention.

  Figure 7 shows a side view of a fragment of the intake pipe 2. Inside the intake pipe 2 there is the throttle valve 5 of the adjusting member 4. Like the check valve throttle 5 is not visible on

  the side view, it has been shown in dashes.

  On the side of the intake pipe 2 an adjustment box 80 has been clamped using two screws 77. The screws 77 serve as fixing means. The adjustment box 80 has

  a lid. To be able to look without hindrance

  the adjustment box 80, the cover has not been shown.

  Inside the adjustment box 80 is

  wind the adjusting device 12 and the transmission means

  sion 10, as well as the actuation detector 30. An ex-

  end of the axis 6 of the throttle valve of the regulating member 4 penetrates through the wall of the intake pipe 2 into the adjustment housing 80. At this end of the axis 6 of the throttle valve on has formed, integrally in rotation, the lever 8 of the adjusting member. On the lever 8 of the adjusting member 4 is the stop of the adjusting member 4a. The driver 48 is mounted on the axis 6 of the valve

  choke so that you can turn freely inside

  inside an angle that you can choose. On the driver 48 of the transmission means 10, the stop 10a of the transmission means has been formed in the form of a bead forming

protruding axially.

  In Figure 7 the actuator 16

  (Figures 1 to 6) is not shown. The delivery system

  tction 16 can, in the case of the embodiment shown in Figure 7, be optionally disposed on the side of the intake pipe 2 which is located opposite

the view shown.

  FIG. 7 shows the operating state in the case of which the endless screw 46 is deployed in the direction of deployment 20. Inside the adjustment box 80 there is provided a stop 82 secured to the box. The housing stop 82 is formed in such a way that the end,

  facing worm 46, of the leaf spring of the device

  positive reset 22, rests on the housing stop 82 when the worm 46 is deployed in the direction of deployment 20. In this case the worm 46 is supported on the device leaf spring reset 22 which in turn relies on the stopper

  housing 82. In doing so, the second contact 62 comes into contact

  tact with the first contact 61. In this way the contact

  between the two contacts 61, 62 closes.

  As shown in FIG. 7, a notch 86 has also been provided on the housing stop 82. When the screw without

  end 64 is brought back in the opposite direction to the deployment

  ment 20 (to the right in relation to figure 7) the

  size 86 has the effect that the first contact 61 is held back which gives the assurance that, in this case, the second contact 62 is detached from the first contact 61. The end of the worm 46 of the means of

  transmission 10, which is turned away from the drive

  ment of the torque 54, is maintained in a bearing

  compensation 84. The compensation level 84 is

  set in such a way that the endless screw 46 is held in the radial direction, but that this endless screw 46 can move freely in the axial direction, that is to say in the direction of deployment 20, and that the the end maintained in the compensation bearing 84 of the worm 46 can freely pivot by a certain angle. In this way we cleverly compensate for possible misalignments of

the worm 46.

  With contact 70 (FIG. 2) it is possible to detect whether the adjusting member 4 is actuated by means of the operating element 36. As, however, between the stop 32a of the actuating lever 32 and the lever 8 of the member adjusting it

  there is play in the direction of actuation (figure 2), the

  tact 70 opens while the adjustment member 4 is still controlled by the adjustment device 12. In particular, for this reason, the actuation detector 30 is appreciably better than the contact 70 for checking whether the adjustment device 12 is in operational engagement with

the adjusting member 4.

  In the case of the embodiments shown

  ted in Figures 2 to 7, the worm 46 of the transmission means 10 is rotated by the adjusting device 12 about the longitudinal axis of the worm 46. This means that the direction of operation 14 is

  a rotational movement. When coming into operative socket-

  transmission means 10 with the retaining member

  glage 4, the worm 46 of the transmission means 10 ef-

  deploys 20 in the direction of the axis

  longitudinal of the worm 46. In the case of the example

  ple of embodiment shown in Figure 1 the device

  12 adjusts the transmission means 10 to-

  rotation of the axis of rotation of the throttle valve 6. This

  means that even in the case of this example of realization

  tion, the direction of operation 14 is a ro-

  tation. When the transmission means comes into engagement with the adjusting member 4, the transmission means 10 deploys in the region of its axis of rotation, this deployment 20 occurring perpendicular to

  the axis of rotation of the transmission means 10.

  The examples of embodiments shown have in common the fact that when the transmission means 10 come into operational engagement with the adjusting member 4, the transmission means 10 or at least part of the transmission means 10 completes the deployment 20 , the meaning of this

  deployment 20 deviating from the proper operating direction-

  ment says 14 of the transmission means 10. With the detector

  actuator 30 connected to the housing 40, this defect is detected

bending 20.

  In the case of the power control system, it can be detected whether the adjustment device 12 is in operational connection with the adjustment member 4. According to the embodiments shown, the relative position of the transmission means 10 is checked for this. by

  relative to lever 8 of the adjusting member 4. The same function

  tion could also be filled using a detector

  provided between the transmission means and the re-

  glage, this detector measuring the relative position of these two parts. This direct measurement detector would however

  the disadvantage that the detector could not be available

  dried in solidarity with the housing, which means that it

  would have to draw a moving line going from the box to the detector

  tor. In the case of the power control system

  posed in the present application, the relative position is indirectly detected between the transmission means 10 and the adjusting member 4, thanks to the fact that the

  deployment 20 relative to the housing 40 using the detector

  actuator 30 which is integral with the housing.

  In the case of the embodiments shown

  tees (Figures 2 to 7), the transmission means 10 is separated by the drive of the torque 54 of the servomotor 42. Finally we will also mention the fact that, in a simplified embodiment of the invention, the means can be integrated into the actuator. In the case of this embodiment, the booster comprises for example a rotor which can rotate and which can slide axially. Even in the case of this embodiment, the operating direction 14 is a rotational movement and the deployment 20 is a longitudinal movement. Of

  this way even in the case of this form of realization

  tion, the direction of deployment 20 deviates from the direction of operation

  tction 14. This simplified embodiment is obtained for example when one gives up, in the case of the embodiment shown in FIG. 7, the drive

  of the torque 54 which allows axial movement between

  be the worm 46 and the rotor of the servomotor 42, but for this gives the rotor of the servomotor 42 a little axial play to allow deployment 20. As those skilled in the art can easily manufacture this simplified form of

  based on the figures contained in the pre-

  feel request, we will give up an additional figure

  having this simplified embodiment.

  The actuation detector 30 can be integrally mounted on the housing 40; there is no need, in the case of the power control system produced according to the invention, to have, between the housing 40 and the actuation detector 30, a mobile electrical line nor either an electrical contact track with an electric slider

sliding on it.

Claims (6)

R E V E N D I C A T I 0 N S   1) Power control system for control   der the power of a motor, with an adjusting member (4) which can move by means of an adjusting device (12) relative to a housing, adjusting member (4) whose position controls the power of the motor, system into which the adjusting device (12) can be put, at least indirectly via a transmission means (10) driven by the adjusting device   (12) in an operating direction (14) in operative engagement   tional with the adjusting member (4), power control system characterized in that, when the transmission means (10) are brought into operational contact with   the adjustment member (4), the transmission means (10) ef-   performs a deployment (20) whose direction deviates from the operating direction (14) and in that there is an actuation detector (30) connected to the housing (40) which detects the   deployment (20) of the transmission means (10).   2) Power control system according to re-   vendication 1, characterized in that the regulating member   (4) can also be moved by means of an attachment device operation (16).   3) Power control system according to re-   vendication 1 or claim 2, characterized in that the actuation detector (30) comprises a contact (61,   62) which closes during the deployment of the transmission means sion (10).   4) Power control system according to one   of claims 1 to 3, characterized in that the detector   actuator (30) includes a contact (61, 62) which   opens during deployment of the transmission means (10).   ) Power control system according to one   claims 1 to 4, characterized in that the means for   transmission (10) is formed by a worm (46) whose   deployment takes place in its axial direction.   6) Power control system according to one   of claims 1 to 5, characterized in that it is provided   a reset device (22) which recalls   the transmission means (10) in the opposite direction to the deployment ment (20).