Method and system for reducing vehicle oscillations
AssigneeCLAAS Tractor SAS
InventorsJan Carsten Wieckhorst, Thomas Fedde
Life of this patent
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Abstract
A method for reducing vehicle oscillations for an agricultural vehicle with a drive engine, a running gear cooperating with the drive engine for driving wheels having pneumatic tires, and a control unit for regulating a tire pressure of at least one tire requires a number of steps. For example, the method includes generating a sensor signal as a function of at least one determined vehicle oscillation and regulating a tire pressure of at least one tire by the control unit as a function of the sensor signal in order to reduce the determined vehicle oscillation.
Claims8
A method for reducing vehicle oscillations for an agricultural vehicle comprising a drive engine and a running gear cooperating with the drive engine for driving wheels having pneumatic tires and a control unit for regulating a tire pressure of at least one tire, the method comprising the steps of:
- specifying a limit value (SG) for the sensor signal (S, S′, S″);
- storing the limit value in the control unit;
- using a tractive force sensor, generating a sensor signal (S, S′, S″) as a function of at least one determined vehicle oscillation;
- and
- regulating, by the control unit, a tire pressure of at least one tire as a function of the sensor signal (S, S′, S″) to reduce the at least one determined vehicle oscillation, until the limit value (SG) is exceeded, said step of regulating comprising:
- lowering the tire pressure of the at least one tire to a minimum tire pressure, wherein the minimum tire pressure depends on a tire load capacity limit of the tire;
- and
- raising, in a stepwise manner, the tire pressure when the sensor signal (S, S′, S″) continuously exceeds the limit value (SG), until the sensor signal (S, S′, S″) drops below the limit value (SG).
A method for reducing vehicle oscillations for an agricultural vehicle comprising a drive engine and a running gear cooperating with the drive engine for driving wheels having pneumatic tires and a control unit for regulating a tire pressure of at least one tire, the method comprising the steps of:
- specifying a limit value (SG) for the sensor signal (S, S′, S″);
- storing the limit value in the control unit;
- generating a sensor signal (S, S′, S″) as a function of at least one determined vehicle oscillation;
- and regulating, by the control unit, a tire pressure of at least one tire as a function of the sensor signal (S, S′, S″) to reduce the at least one determined vehicle oscillation, until the limit value (SG) is exceeded;
- wherein the sensor signal (S, S′, S″), is generated as a function of a measured output torque of the running gear, and wherein the step of regulating comprises:
- lowering the tire pressure of the at least one tire to a minimum tire pressure, wherein the minimum tire pressure depends on a tire load capacity limit of the tire;
- and
- raising, in a stepwise manner, the tire pressure when the sensor signal (S, S′, S″) continuously exceeds the limit value (SG), until the sensor signal (S, S′, S″) drops below the limit value (SG).
A system for reducing vehicle oscillations for an agricultural vehicle, comprising
- a drive engine;
- a running gear cooperating therewith for driving wheels having pneumatic tires;
- a tractive force sensor;
- and
- a control unit for regulating a tire pressure of at least one tire;
- wherein a sensor signal (S, S′, S″) is generated as a function of at least one ascertained vehicle oscillation, wherein a limit value (SG) specified for the sensor signal (S, S′, S″) is stored in the control unit, and a tire pressure of at least one tire is regulated by the control unit as a function of the sensor signal (S, S′, S″) to reduce the ascertained vehicle oscillation, the regulating carried out until the limit value (SG) is exceeded, and wherein the control unit is configured to regulate the tire pressure by lowering the tire pressure of the at least one tire to a minimum tire pressure, wherein the minimum tire pressure depends on a tire load capacity limit of the tire;
- and
- raising, in a stepwise manner, the tire pressure when the sensor signal (S, S′, S″) continuously exceeds the limit value (SG), until the sensor signal (S, S′, S″) drops below the limit value (SG).
Dependencies are inferred from the claim text.