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CLUTCH PEDAL DEACTIVATION WHEN A DIRECTION OF TRAVEL OF A VEHICLE HAS CHANGED AND A CLUTCH PEDAL IS AT LEAST PARTLY DEPRESSED

IP.com Disclosure Number: IPCOM000249749D
Publication Date: 2017-Mar-31
Document File: 6 page(s) / 83K

Publishing Venue

The IP.com Prior Art Database

Abstract

The present solution relates to a system and a method for deactivating the clutch pedal and/or accelerator of a vehicle when a change of gear to a gear that changes the direction of motion of the vehicle has been performed, and where the clutch pedal and/or accelerator is at least partly depressed at the moment when the change of gear is completed. The clutch pedal is deactivated until the clutch pedal is fully depressed to thereby regain control of the clutch. The accelerator, if depressed, is deactivated until the accelerator has been fully released. With regard to the clutch pedal the driver may also fully release the clutch pedal and then depress the accelerator, in which case a conventional two pedal start of the vehicle may be performed.

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CLUTCH PEDAL DEACTIVATION WHEN A DIRECTION OF TRAVEL OF A VEHICLE HAS CHANGED AND A CLUTCH PEDAL IS AT LEAST PARTLY DEPRESSED

ABSTRACT

The present solution relates to a system and a method for deactivating the clutch pedal and/or accelerator of a vehicle when a change of gear to a gear that changes the direction of motion of the vehicle has been performed, and where the clutch pedal and/or accelerator is at least partly depressed at the moment when the change of gear is completed. The clutch pedal is deactivated until the clutch pedal is fully depressed to thereby regain control of the clutch. The accelerator, if depressed, is deactivated until the accelerator has been fully released.

With regard to the clutch pedal the driver may also fully release the clutch pedal and then depress the accelerator, in which case a conventional two pedal start of the vehicle may be performed.

BACKGROUND

Vehicle transmissions may include a clutch or other kinds of torque transmission means that can be used to selectively interrupt transmission of torque in a vehicle drivetrain. Even though gear changing operations may be arranged to be performed automatically by the vehicle control system in systems of this kind, e.g. a clutch pedal or similar means may still be used to allow the driver additional freedom of control of the propulsion of the vehicle by selectively manoeuvring the clutch when so is desired. In particular, the clutch may be used by the driver e.g. to control start of the vehicle, or e.g. cause the vehicle to only slowly move forward through the use of a slipping clutch.

The torque transmitting means such as a clutch may be arranged to be controlled solely by the driver, e.g. by a mechanical linkage between clutch pedal and clutch and thereby with no influence from the vehicle control system.

The system may also be designed such that the clutch pedal may still be used by the driver to control the clutch, but not directly through the use of a mechanical linkage. Instead, the clutch may be controlled through the use of a clutch-by-wire (CBW) system. In clutch-by-wire systems, an electrical signal representing e.g. a clutch pedal position is translated into a corresponding request for torque transmission, such as a corresponding clutch movement. For example, a position sensor or other suitable means can be used to detect a position of the driver manoeuvrable means, such as e.g. the position of a clutch pedal. An electrical signal representing this position is then translated into a corresponding driver request regarding e.g. clutch operation, and the vehicle control system controls actual clutch movement in dependence of the signal representing the position of the clutch pedal.

In this way, responsibility for controlling the manner in which the clutch is to be maneuverer may be transferrable between the driver of the vehicle and the vehicle control system so that opening and closing of the clutch may also be completely controlled by the vehicle contr...