| Torsional control for torque distribution -> Monitor Keywords |
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Torsional control for torque distributionTorsional control for torque distribution description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20090170651, Torsional control for torque distribution. Brief Patent Description - Full Patent Description - Patent Application Claims
The invention relates to torsion control of driving torque distribution applicable in mechanical engineering, and particularly in the vehicle manufacturing industry, as well as wherever there is a need for automatic control of torque in functionally connected objects. A large number of torque distributors for use in vehicles operate with one permanently connected driving axle. In the cases of loss of cohesion between the road and the wheels on that axle, the distributors engage automatically driving axles, which are not permanently connected. Generally, the engages are carried out by means of multidisk clutches in an oil bath. The engaging/disengaging of the clutches is most often carried out by hydraulic or electromagnetic actuators with externally fed energy, and the instructions are generated by electronic control equipment. The distribution of engine torque on the driving wheels is also controlled by operation on the mechanisms and systems of the vehicle, which are functionally related to the interaction “wheels—road”. The efficiency of the control depends mostly on how quickly the system works. To achieve a high level of road safety and cost-effectiveness of the motion, there is also a need for precise dispensing of control actions. The preciseness of the dispensing strongly depends on the accuracy of determining the loss of cohesion. Important is also the number of motion parameters which are taken under consideration in such control (speed, engine mode, turning, accelerations). In electronic control, the losses of cohesion are generally registered indirectly by ABS sensors through registration of skidding of the driving wheels. An evaluation of the cohesion values lacks. The registration is carried out when there already are energy losses and consequences which adversely affect the motion stability. The registration of cohesion values is substituted for registration of the consequences of cohesion loss. Thus the start of giving distribution control instructions is delayed. When the cohesion losses are registered by means of torque sensors fitted after the transmission mechanism (JP 63013824), there is no such delay as described above, but here also lacks a sufficiently accurate quantitative assessment of losses. The control action, as a result of a control instruction, occurs upon operating (changing the active status) of the actuator. The control actions are further delayed by the time necessary for operating of the actuators after giving control instructions to them. The distribution control process in torque distributors with electronic control includes the following stages: registration of cohesion losses, generation and transmission of control instructions to actuators, operation of actuators. In control by means of sensors, there exists a direct correlation between the degree of satisfying the distribution requirements and the degree of design complexity, which accompany that design. A major disadvantage of all electronically controlled torque distributors is the delay of control actions towards the moments of arising necessity of them. The reason for this disadvantage is the indirect registration of cohesion losses, as well as the resulting thereof separation and consecutive fulfilment of the stages of the distribution control process. The purpose of this invention is to create torsion control of driving torque distribution, with which the changes in the cohesion between the road and wheels on permanently connected driving axles are directly registered through devices including elastic elements sensitive to torsional loadings, and the mechanical transfers in these devices are converted into physical control actions that can be applied in doses. The purpose is achieved by means of torsion control of driving torque distribution which includes driving shafts with their driving components, differential and interlocking mechanisms of permanently and non-permanently connected driving axles, axle clutches with their engaging devices operating non-permanently connected driving axles as well as actuators for controlling the operation of mechanisms and systems of the object of application of the invention, which are functionally related to the interaction “wheels—road”. In a shaft, which is mechanically connected to a permanently connected driving axle, at least one unit is integrated for formation of relative mobility, which through its sensitive to torsion loadings elastic elements detaches over the shaft length at least two relatively mobile parts. By means of these parts a unit for conversion of the relative mobility into physical control actions is formed. The unit for conversion of the relative mobility into physical control actions contains a hollow rotative-shaped component, which is attached to one of the relatively mobile part of the unit for formation of relative mobility, and is located coaxially to the other one. Cammed profiles are cut into the rotative-shaped component. These profiles are interacting with round ends of stems protruding from a disk, which is attached to the shaft, by a splined joint. By means of a second sliding kinematic unit the disk is also connected to one end of a control lever, which is suspended by its middle part on an axis of swing, which axis is firmly fixed to the chassis. The opposite to the disk end of the lever is connected to actuators used for controlling the operation of mechanisms and systems of the object of application, which are functionally related to the interaction “wheels—road”. The control lever is connected by means of a drive line of a clutch with an engaging device of at least one axle clutch of a non-permanently connected driving axle, and along the drive line of a clutch a device for dispensing the physical control actions is installed. The control lever is connected by means of a drive line of a brake with a control unit of the braking system, and along the drive line of a brake a device for dispensing the braking actions is installed. The invention provides for control actions on actuating units performing control of engine torque distribution, which actions are manifested at the time of occurrence of their causes. The so improved control efficiency ensures increase of the road safety of vehicles in bad and sharply changing road conditions and improvement of their fuel efficiency. The invention provides simple technical means for forming and applying torsion reactions under torsion loadings of shafts. These reactions contain torsion information which accurately, directly and continuously reflects the adhesive forces values and of the useful work carried out by the transmission within the interval of values risky for road safety. Continue reading about Torsional control for torque distribution... Full patent description for Torsional control for torque distribution Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Torsional control for torque distribution patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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