Method for adjusting traction of a pneumatically sprung vehicle and air spring system for performing the method
An air spring, motor vehicle technology, applied in vehicle components, elastic suspension, transportation and packaging, etc., can solve problems such as non-optimal control and adjustment methods
Active Publication Date: 2020-07-21
ZF CV SYST EURO BV
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Problems solved by technology
For this, the hitherto known control and regulation methods were judged to be suboptimal
Method used
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[0034] figure 1 A schematic diagram of a vehicle 1 is shown in plan view with a steered front steered axle A as well as a rear driven axle TA and a non-driven driven axle SA. The load of the vehicle 1 is in particular spring-damped via the first bearing bellows 2 at the left drive wheel TAL of the transaxle TA and via the second bearing bellows 4 at the right drive wheel TAR. A first pressure sensor S2 is arranged on the first bearing bellows 2 and a second pressure sensor S4 is arranged on the second bearing bellows 4 , which serve to sense pressure in the bearing bellows 2 , 4 of the drive axle TA. pressure.
[0035] The driven axle SA is spring-damped in a similar manner via the third bearing bellows 3 adjacent to the left wheel LAL of the driven axle SA and via the fourth bearing bellows 5 adjacent to the right wheel LAR of the driven axle SA . The pressure in the two bearing bellows 3 and 5 is sensed by a third pressure sensor S3 on the third bearing bellows 3 and a fo...
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The invention relates to a method and a device for traction regulation of a pneumatically sprung vehicle (1) with at least one front steering axle (A), rear drive Axle (TA) and driven axle (SA), the method comprises the following steps: starting from the regulation mode "pressure ratio regulation", switching to the regulation mode "slave axle load reduction", in the regulation mode "pressure ratio regulation" , to maintain a parameterized ratio of the air pressure in the bearing bellows (2, 4) of the drive axle (TA) to the air pressure in the bearing bellows (3, 5) of the driven axle (SA); check: from Whether the driving axle (SA) can reduce the load without overloading the driving axle (TA). As soon as the driven axle (SA) is able to reduce the load, there is an automatic switchover to the regulation mode "optimum traction". The pressure is increased and the pressure in the bearing bellows (3, 5) of the driven axle (SA) is reduced in order to thereby cause a load on at least one driving axle (TA) by deloading the driven axle (SA) Transfer without exceeding the maximum allowable axle load of the driving axle (TA) and deload the driven axle (SA) to maintain residual pressure. As soon as the signal for reloading the driven axle (SA) is present, there is a switch back to the control mode "pressure ratio control", with loading of the driven axle (SA) and unloading of the driving axle (TA).
Description
technical field [0001] The invention relates to a traction regulation method and an air spring system for a pneumatically sprung vehicle having at least one front steering axle, at least one rear drive axle and a driven axle upstream or downstream of the drive axle. Background technique [0002] In EP 0 411 352 B1 an axle load control device is described which is used as a starting aid for an air spring-loaded multi-axle vehicle in which there are devices on the axles through which Air spring bellows for valve train supply with compressed air. In addition to at least one drive axle, there is at least one additional axle that can be lifted, known as a lifting axle, or there is at least one additional axle that can be relieved in the form of a driven axle, which is arranged on the drive axle. Before or after the axle. In order to activate the starting aid, the air spring bellows of the additional axle are vented and, if necessary, the lifting axle is additionally raised by m...
Claims
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IPC IPC(8): B60G17/015B60G17/016B60G17/018B60G17/052
CPCB60G17/0155B60G17/018B60G17/0528B60G2300/0262B60G2400/51222B60G2400/61B60G2800/182B60G2800/214B60G17/0164
Inventor 乌韦·伦茨
Owner ZF CV SYST EURO BV