Interrelated power delivery controls – including engine control – Brake control – Brake control having holding device – with means on engine...
Reexamination Certificate
2001-08-16
2004-01-20
Lavinder, Jack (Department: 3683)
Interrelated power delivery controls, including engine control
Brake control
Brake control having holding device, with means on engine...
C477S194000, C477S191000
Reexamination Certificate
active
06679810
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a motor vehicle as well as to a method for operating a motor vehicle.
2. Description of the Related Art
A method for operating a motor vehicle in a particular way, namely a method to assist a motor vehicle starting operation, is already known from DE 196 30 870 A1.
DE 196 30 870 A1 proposes to assist a starting operation of a motor vehicle having an automatic transmission and that is secured in a rest condition by brake engagement through an external force, to subsequently detect a torque produced by a drive motor. As soon as the torque exceeds a threshold value, brake engagement is released according to the known method.
That known arrangement is suitable for assisting motor vehicle starting operation in certain driving situations.
Of course, certain improvements with regard to flexibility as well as assembly possibilities of such an arrangement are desirable.
The object of the present invention is to provide a motor vehicle that prevents unintentional rolling away in given conditions, and that at the same time is economical as well as structurally simple to manufacture and that is additionally very versatile.
SUMMARY OF THE INVENTION
In accordance with the invention there is consequently provided a motor vehicle that has an electronically-controlled clutch apparatus and/or that has an automated shift transmission and that is provided with a hill holder apparatus.
The hill holder apparatus prevents undesired movement of the motor vehicle primarily under predetermined conditions, that is, at predetermined times or in predetermined situations.
The terms “undesired motion” as well as “brake effect” are in the sense of the invention to be understood to be broadly construed. The term “brake effect” applies, for example, according to intention, to a parking brake system and to parking brake system operation and/or a service brake and to service brake operation. Likewise, any type of delayed engagement of starting movement can be understood by that term.
It should be noted that, in the sense of the invention, at least indirect should be understood particularly to be direct and/or indirect.
The motor vehicle has a drive system such as, for example, an engine. Preferably the engine is an internal combustion engine. The motor vehicle is further provided with a driven system. The driven system includes for example at least one axle and at least two wheels. Preferably the driven system includes four wheels.
The motor vehicle in accordance with the invention further includes a torque transmitting apparatus such as a clutch, as well as a transmission unit.
The transmission unit is disposed between the drive system and the driven system. Preferably, the torque transmitting apparatus is disposed between the transmission unit and the drive system. Especially preferred is the disposition of the transmission unit between the drive system and the torque transmitting apparatus.
The invention is in that respect advantageous in that for motor vehicles with electronically-controlled clutch arrangements (designated by the applicant as electronic clutch management EKM) as well as ASG motor vehicles, undesired rolling away of the motor vehicle is prevented in a secure and reliable type and way. Those situations of undesired rolling away can occur, for example, on a hill. Accordingly, a hill holder arrangement makes possible during starting, for example, retention of a motor vehicle immediately before, as well as during, the starting process. But a hill holder apparatus in accordance with the invention also makes possible the prevention of undesired motor vehicle movement beyond one of such starting processes. Further, the invention is advantageous to the extent that it can be very flexibly matched with specific motor vehicles having ASG, as well as electronically controlled clutch arrangements.
In accordance with an especially preferred embodiment of the invention undesired movements of a motor vehicle are terminated as well as prevented by the hill holder apparatus.
It is also preferred that the hill holder apparatus terminates as well as prevents rolling away on a hill.
In accordance with an especially preferred embodiment of the invention, a braking as well as a parking operation can be performed on the vehicle by the hill holder apparatus at predetermined times and/or in predetermined situations.
Preferably further, the hill holder produces direct and/or indirect coupling in the manner of a clutch between at least a portion of the drive system and at least a portion of the driven system. The clutch is, for example, designed in such a manner that components that are movable with respect to each other during vehicle rolling motion are firmly coupled to each other. For example, the invention provides that a component mounted in the torque flow between the drive system and the driven system is at least temporarily rigidly affixed in place relative to the vehicle body.
It is further preferred that the drive system and/or the driven system are at least partly firmly affixed relative to the vehicle body, whereby the drive system again is firmly coupled to the driven system.
According to an especially preferred embodiment of the invention, the hill holder apparatus engages essentially independently of the service brake in a vehicle movement situation.
It is further especially preferred that the hill holder apparatus controls the vehicle motion status at least in part and/or at least temporarily as a function of at least one vehicle condition parameter. Such a vehicle condition parameter for instance is its speed or the clutch temperature or a rotational speed, such as engine rpm or the transmission rotational speed. It is also preferred that the movement condition of the motor vehicle is controlled at least partly as a function of its driving condition. For example, one such driving condition is “creeping” or “starting” or “driving” or “neutral” or “park.”
It is further preferred that the hill holder apparatus is at least in part designed as a locking system or has at least part of a locking system.
In accordance with another especially preferred embodiment of the invention, the hill holder apparatus is at least partly mechanical, or engages at least partly an at least partly mechanical component. Especially preferred is a clutch based at least in part on mechanical principles, which is controlled by the hill holder apparatus.
Especially preferred, further, the hill holder apparatus has at least a portion of a mechanical locking system or represents a part of a mechanical locking system. A locking system based on other principles also is preferred in accordance with the invention.
An especially preferred motor vehicle has a hill holder apparatus with at least one free-wheeling component. The free-wheeling component is mounted, for example, near the transmission. For example, the operation of such a free-wheeling component can be controlled as a function of rotational speed. Preferably, one direction of rotation is blocked in some ranges of rotational speeds. Preferably further, the free-wheeling component operates in such manner that under certain situations one direction of rotation is blocked. For example, the hill holder apparatus is designed with a free-wheeling component in such a manner that whenever the accelerator pedal is not operated, the free-wheeling component is switched to prevent vehicle backward movement. It is further preferred that at least one free-wheeling component is associated with the individual transmission gear ratios.
In accordance with an especially preferred embodiment of the invention, the hill holder apparatus is at least partly electrical. It is further preferred that the hill holder apparatus has at least a portion of an electrical locking system.
Especially preferred, the hill holder apparatus is at least partly magnetic. Also preferred is an at least partly electromagnetic hill holder apparatus.
In accordance with an especially preferred embodiment of the invention, the hill holder app
Boll Bernhard
Salecker Michael
Schneider Georg
Stinus Jochen
Lavinder Jack
Luk Lamellen und Kupplungsbau Beteiligungs KG
Pezzlo Benjamin
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