WO2007011282A1 - Dispositif pour régler la fonctionnalité d’un accélérateur - Google Patents

Dispositif pour régler la fonctionnalité d’un accélérateur Download PDF

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Publication number
WO2007011282A1
WO2007011282A1 PCT/SE2006/000870 SE2006000870W WO2007011282A1 WO 2007011282 A1 WO2007011282 A1 WO 2007011282A1 SE 2006000870 W SE2006000870 W SE 2006000870W WO 2007011282 A1 WO2007011282 A1 WO 2007011282A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
spring
accelerator
moving
towards
Prior art date
Application number
PCT/SE2006/000870
Other languages
English (en)
Inventor
Sven Gustafsson
Original Assignee
Nomix Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nomix Ab filed Critical Nomix Ab
Publication of WO2007011282A1 publication Critical patent/WO2007011282A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
    • B60K26/02—Arrangements or mounting of propulsion unit control devices in vehicles of initiating means or elements
    • B60K26/021—Arrangements or mounting of propulsion unit control devices in vehicles of initiating means or elements with means for providing feel, e.g. by changing pedal force characteristics

Definitions

  • the present invention relates to a device for adjusting the operability of an accelerator.
  • Devices of the type described by way of introduction can be used to affect the behaviour of a driver of a motor-driven vehicle. More specifically, the device can affect the operability of the accelerator so that it will be more difficult or heavier to operate when the driver exhibits a non-desirable behaviour.
  • a device of this type is known from W0056566.
  • the device affects an accelerator of a motor-driven vehicle so that the accelerator in a basic state is operable with difficulty. By activating the device, it will assist the operation of the accelerator in such a manner that it will be operable for the driver without difficulty.
  • the device can be activated when the vehicle is driven at a speed below or equal to a currently prevailing permissible maximum speed, whereby the device will encourage a driving behaviour where the prevailing speed limit regulations are respected.
  • the prior art device functions in a satisfactory manner, its construction may in some cases cause problems since the construction is relatively complicated. This means that the prior art device can be both expensive and bulky.
  • a device for adjusting the operability of an accelerator, such as a throttle pedal, said device comprising a cylinder, a piston which is arranged in the cylinder and movable relative to the cylinder from a first piston position to a second piston position against the action of a piston spring, an element which is arranged in the piston and connectable to the accelerator and which is movable relative to the piston from a first element position to a second element position against the action of an element spring, a piston moving means, which is arranged to move the piston between the first piston position and the second piston position.
  • the accelerator When the piston is in the first piston position, the accelerator is, in its state connected to the element, operable to increase the speed by moving the piston together with the element towards the second piston position.
  • the accelerator When the piston is between the first and the second piston position, the accelerator is operable by first moving the element to the second element position and then moving the piston together with the element towards the second piston position. When the piston is in the second piston position, the accelerator is operable by moving the element towards the second element position.
  • the piston spring has a spring constant which is higher than a spring constant of the element spring.
  • the accelerator When the piston is in the first piston position, the accelerator is operable to increase the speed by moving the piston together with the element towards the second piston position. This movement occurs against the action of the piston spring, which has a higher spring constant than the element spring. Thus, a comparatively greater effort is required to operate the accelerator in this situation.
  • the accelerator When the piston is in the second piston position, the accelerator is operable to increase the speed by moving the element from the first element position to the second element position. This movement occurs against the action of the element spring, which has a lower spring constant than the piston spring. The effort to operate the accelerator is thus in this situation comparatively smaller .
  • the accelerator When the piston is in a position between the first and the second piston position, the accelerator is operable to increase the speed by first moving the element to the second element position and then moving the piston together with the element to the second piston position. The initial movement of the element occurs against the action of the element spring and thus is proportionately light. The subsequent movement of the piston together with the element occurs against the action of the piston spring and thus is proportionately heavy.
  • the inventive device consequently allows in a simple and reliable manner adjustment of the operability of the accelerator .
  • the device is largely accommodated in a cylinder, which means that it will be relatively compact.
  • the piston moving means of the device is movable by a drive means, which may consist of an electric motor in the form of a direct-acting stepping motor.
  • the drive means affects the piston moving means so that the piston can be made to take a desired position in or between the first and the second piston position.
  • the drive means comprises a rotatable, threaded rod which engages a threaded hole in the piston moving means.
  • the drive means acts to rotate the rod, whereby the piston moving means can be made to take the desired position.
  • the piston is moved by the piston moving means in a simple and reliable manner.
  • the piston spring can be a compression spring which is compressed in moving the piston from the first piston position towards the second piston position.
  • the element spring can be a compression spring which is compressed in moving the element from the first element position towards the second element position.
  • the device comprises a con- necting means for connecting the accelerator to the element.
  • the device comprises a control unit which is arranged to control the movement of the piston moving means as a function of predetermined parameters. These parameters may comprise prevailing speed limit regulations or use of safety belt. This makes it possible to adjust the operability of the accelerator to encourage a desired behaviour of the user.
  • Fig. 1 is a schematic, part-sectional side view of an inventive device where a piston is in a first piston position and an element is in a second element position.
  • Fig. 2 is a schematic, part-sectional side view of the device in Fig. 1 where the piston is in a second piston position and the element is in a first element position.
  • Fig. 3 is a schematic, part-sectional side view of the device in Fig. 1, where the piston is in the second piston position and the element is in the second element position.
  • Fig. 4 is a schematic side view of an inventive device and an accelerator connected thereto, the accelerator being in an idle position.
  • Fig. 5 is a schematic side view of the device and the accelerator, the accelerator being in a position for maximum speed.
  • Figs 1-3 illustrate an embodiment of a device 1 according to the present invention.
  • the inventive device 1 comprises a cylinder 3 extending along a longitudinal axis 2 and a piston 4 arranged therein.
  • the cylinder 3 has a suitable cross- section, such as a circular cross-section.
  • the piston 4 is movably arranged relative to the cylinder 3 between a first piston position indicated at A and a second piston position indicated at B. In the embodiment illustrated, the piston 4 is movable along the longitudinal axis 2 of the cylinder 3 between the first A and the second B piston position.
  • the piston 4 comprises a piston plate 5 which is slidable along the inner circumferential surface of the cylinder 3 between the first A and the second B piston position.
  • the piston plate 5 supports, on a surface facing away from a first end 6 of the cylinder 3, a hollow piston rod 8 which extends concentrically around the longitudinal axis 2 of the cylinder 3.
  • a piston moving means 9 is arranged in the cylinder 3 between the piston plate 5 and the first end 6 of the cylinder 3.
  • a drive means 10 is arranged outside the cylinder 3 at the first end 6 thereof.
  • the drive means 10 comprises an electric motor 11 in the form of a direct-acting stepping motor.
  • the drive means 10 is arranged to move the piston 4 between the first A and the second B piston position by the piston moving means 9.
  • the drive means 10 comprises also a rod 12 which is rotatable by the electric motor 11 and provided with an external thread.
  • the threaded rod 12 extends into the cylinder 3 and engages a threaded hole 13 in the piston moving means 9.
  • the treaded rod 12 further extends through the threaded hole 13 into the hollow piston rod 8.
  • the piston moving means 9 By rotation of the threaded rod 12 by means of the electric motor 11 , the piston moving means 9 is consequently movable along the longitudinal axis 2 of the cylinder 3 and can thus be made to engage the piston plate 5 to move the piston 4 between its first A and second B piston position.
  • the first piston position A is defined by a shoulder 14 formed in the inner circumferential surface of the cylinder 3 (see Fig. 1) and the second piston position B is defined by the position of the piston moving means 9 when moved to an outer end position on the treaded rod 12 (see Fig. 2) .
  • a piston spring 15 of compression spring type is arranged in the cylinder 3 concentrically and outside the piston rod 8.
  • the piston spring 15 extends between the surface of the piston plate 5 facing away from the first end 6 of the cylinder 3 and a second end 7 of the cylinder 3. Thus the piston spring 15 will be compressed in moving the piston 4 from the first piston position A to the second piston position B.
  • An element 16 is arranged inside the hollow piston rod 8 and is movably arranged relative to the piston rod 8 between a first element position C and a second element position D. More specifically, the element 16 is slidable along the inner circumferential surface of the hollow piston rod 8.
  • the first element position C corresponds to a position at a first end 17 of the piston rod 8.
  • the piston moving means 9 must be moved to the outer end position on the treaded rod 12 (see Fig. 2) so that said rod 12 no longer occupies the space inside the hollow piston rod 8.
  • the second element position D is defined by a shoulder 19 formed in the inner circumferential surface of the hollow piston rod 8 adjacent to a second end 18 thereof.
  • An element spring 20 of compression spring type is arranged inside the hollow piston rod 8 between the element 16 and the second end 18 of the piston rod 8. The element spring 20 will thus be compressed in moving the element 16 from the first element position C to the second element position D.
  • An accelerator schematically illustrated at 21, is connectable to the element 16 via a connecting means 22 which in the embodiment shown is a wire.
  • the element spring 20 has a spring constant which is lower than a spring constant of the piston spring 15. The force required to compress the piston spring 15 is thus greater than the force required to compress the element spring 20.
  • Fig. 1 illustrates the piston 4 in its first element position A and the element 16 in its second element position D.
  • the accelerator 21 is in a non-actuated position, corresponding to the idle position. If a user in this situation should want to increase the speed, he must affect the accelerator 21 by such a force that the piston 4 is moved together with the element 16 from the first piston position A towards the second piston position B, that is the user must overcome the counteracting force of the piston spring 15.
  • Fig. 2 illustrates the piston moving means 9 in such a position that the piston 4 is in the second piston position B and the element 16 is in the first element position C.
  • the accelerator 21 is again shown in a non- actuated position.
  • Fig. 3 shows the accelerator 21 in a position for maximum speed, which means that the element 16 has been moved to the second element position D.
  • the counteracting force of the piston spring 15 is greater than the counteracting force of the element spring 20. Consequently, less effort is required to operate the accelerator 21 for increasing the speed when the inventive device 1 is in the state shown in Fig. 2 than in the case when the device 1 is in the state shown in Fig. 1.
  • the user can operate the accelerator 21 to increase the speed by first moving the element 16 to the second element position D and then moving the piston 4 together with the element 16 towards the second piston position B. Initially the operation of the accelerator 21 will thus be proportionately light and, subsequently, heavy.
  • a connecting means 22 in the form of a wire extends from the element 16 of the device 1, through the second end 18 of the piston rod 8 and through the second end 7 of the cylinder 3 to the accelerator 21.
  • the piston 4 is in the first piston position A and the accelerator 21 is in a position that corresponds to idling.
  • the piston 4 has been moved to the second piston position B, while at the same time the element 16 has been moved to the second element position D by operating the accelerator 21 for maximum speed.
  • the inventive device 1 can further comprise a control unit (not shown) , which is arranged to control the movement of the piston moving means 9 performed by the driving means 10 as a function of predetermined parameters . These parameters can be such that the inventive device acts to encourage a desirable behaviour of a user, that is a driver of a motor vehicle equipped with an inventive device.
  • control unit can be supplied with information about the maximum permissible speeds prevailing in the current road system while, for instance, a GPS based system checks the position of the vehicle in the road system. The control unit detects the speed of the vehicle and compares it with the maximum permissible speed for the current road section. If the speed is below or equal to the maximum permissible speed, the control unit controls the drive means to make the piston moving means take a position, in which the accelerator is operable without difficulty.
  • the inventive device possesses the property of supplying information about the current speed limit to the user via the accelerator.
  • the user will in fact when operating the accelerator experience an end position, in which the accelerator will be heavy to operate. This end position corresponds to the case when the element has been moved to the second element position and a further increase of the speed can only be achieved by moving the piston towards the second piston position.
  • the control unit will control the piston moving means to be moved towards the first end of the cylinder.
  • the piston spring will press the piston towards the first piston position, which in turn moves the element towards the second element position. If the element has been moved to the second element position, a further movement of the piston towards the first piston position will result in the user experiencing how the throttle pedal is pressed upwards. If the user wishes to continue driving at the current, non-permissible speed, a greater effort is thus required. If the user allows the foot to follow the throttle pedal, a new end position will appear, corresponding to the new speed limit.
  • the inventive device thus acts to encourage a cer- tain behaviour, in the example described above respecting the prevailing speed limit regulations.
  • the device is not compelling, that is it is possible for the user to act contrary to the desirable behaviour, which can be important from a safety point of view. In over- hauling, it may for example in some cases be justified for a vehicle driver to exceed the permissible speed limit .
  • control means controlling the drive means may also concern, for instance, use of safety belt or activation of dipped headlights .
  • the drive means in some other way. It is thus possible to design the drive means as a hydraulically or pneumatically acting means for moving the piston moving means.
  • piston spring and/or the element spring in some other way.
  • they can be in the form of tension springs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

La présente invention concerne un dispositif destiné à régler la fonctionnalité d’un accélérateur (21), tel qu’une pédale d’accélérateur, comprenant un cylindre (3), un piston (4) agencé dans le cylindre (3) et mobile par rapport au cylindre (3) depuis une première position de piston (A) vers une seconde position de piston (B) de par l’action d’un ressort de piston (15), un élément (16) agencé dans le piston (4) et pouvant être raccordé à l’accélérateur (21) et mobile par rapport au piston (4) depuis une première position d’élément (C) vers une seconde position d’élément (D) de par l’action d’un ressort d’élément (20), un moyen de déplacement de piston (9), agencé pour déplacer le piston (4) entre la première position de piston (A) et la seconde position de piston (B). Lorsque le piston (4) se trouve dans la première position de piston (A), l’accélérateur (21) se trouve dans son état raccordé à l’élément (16), fonctionnel pour augmenter la vitesse en déplaçant le piston (4) avec l’élément (16) vers la seconde position de piston (B). Lorsque le piston (4) se trouve entre la première position de piston (A) et la seconde position de piston (B), l’accélérateur est fonctionnel en déplaçant d’abord l’élément (16) vers la seconde position d’élément (D) et en déplaçant ensuite le piston (4) avec l’élément (16) vers la seconde position de piston (B). Lorsque le piston (4) se trouve dans la seconde position de piston (B), l’accélérateur est fonctionnel en déplaçant l’élément (16) vers la seconde position d’élément (B). Le ressort de piston (15) a une constante de ressort qui est plus élevée qu’une constante de ressort du ressort d’élément (20).
PCT/SE2006/000870 2005-07-15 2006-07-12 Dispositif pour régler la fonctionnalité d’un accélérateur WO2007011282A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0501673-8 2005-07-15
SE0501673A SE527580C2 (sv) 2005-07-15 2005-07-15 Anordning för anpassning av manövrerbarheten hos ett gasreglage

Publications (1)

Publication Number Publication Date
WO2007011282A1 true WO2007011282A1 (fr) 2007-01-25

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ID=36141799

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2006/000870 WO2007011282A1 (fr) 2005-07-15 2006-07-12 Dispositif pour régler la fonctionnalité d’un accélérateur

Country Status (2)

Country Link
SE (1) SE527580C2 (fr)
WO (1) WO2007011282A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8913668B2 (en) 2008-09-29 2014-12-16 Microsoft Corporation Perceptual mechanism for the selection of residues in video coders

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5568797A (en) * 1991-12-26 1996-10-29 Landerretche; Alain Power control assistance device for motor vehicles
WO2000056566A1 (fr) * 1999-03-24 2000-09-28 Nomix Ab Systeme de reglage de vitesse, unite de commande d'un tel systeme et procede de reglage de la vitesse d'un vehicule

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5568797A (en) * 1991-12-26 1996-10-29 Landerretche; Alain Power control assistance device for motor vehicles
WO2000056566A1 (fr) * 1999-03-24 2000-09-28 Nomix Ab Systeme de reglage de vitesse, unite de commande d'un tel systeme et procede de reglage de la vitesse d'un vehicule
US6615943B1 (en) * 1999-03-24 2003-09-09 Nomix Ab Speed adjusting system, control, unit for such a system and method for adjusting the speed of a vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8913668B2 (en) 2008-09-29 2014-12-16 Microsoft Corporation Perceptual mechanism for the selection of residues in video coders

Also Published As

Publication number Publication date
SE0501673L (sv) 2006-04-11
SE527580C2 (sv) 2006-04-11

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