Method and device for monitoring the tire pressure of motor vehicle tires
OwnerNorbert POLZINinventor
Life of this patent
Estimating the term…
Abstract
A method for monitoring the tire pressure of motor vehicle wheels of which at least one is equipped with a tire pressure sensor. The tire pressure can be very easily monitored even at those wheels not having a tire pressure sensor if, at a first wheel having a tire pressure sensor, the tire pressure or a quantity that is a function of the tire pressure is measured and this measurement value is used as a reference value, and in addition a quantity that is a function of the tire pressure is measured at a second wheel that does not have a tire pressure sensor, and the corresponding measurement value is compared to the reference value.
Claims8
A method for monitoring the tire pressure of motor vehicle tires of which at least one is equipped with a tire pressure sensor, the method comprising:
- measuring the tire pressure or a quantity that is a function of the tire pressure at a first wheel that has a tire pressure sensor;
- using a measurement value as a reference value for the monitoring of the tire pressure at another wheel;
- measuring a quantity that is a function of the tire pressure at a second wheel that does not have a tire pressure sensor;
- and
- determining a loss of pressure at the second wheel if a condition is met that is a function of the quantity measured at the second wheel and of the reference value.
A control device for monitoring the tire pressure of motor vehicle tires of which at least one is equipped with a tire pressure sensor, the control device comprising:
- means for measuring the tire pressure or a quantity that is a function of the tire pressure at a first wheel that has a tire pressure sensor;
- means for using a measurement value as a reference value for the monitoring of the tire pressure at another wheel;
- means for measuring a quantity that is a function of the tire pressure at a second wheel that does not have a tire pressure sensor;
- and
- means for determining a loss of pressure at the second wheel if a condition is met that is a function of the quantity measured at the second wheel and of the reference value.
A device for monitoring the tire pressure of motor vehicle tires, comprising:
- a number of tire pressure sensors, the number being less than a total number of wheels;
- a plurality of wheel rotational speed sensors;
- and
- a control unit that processes a measurement signal of a tire pressure sensor and/or a wheel rotational speed sensor of a first wheel that is equipped with a tire pressure sensor, that processes a measurement signal of a wheel rotational speed sensor of a second wheel that does not have a tire pressure sensor, and that determines therefrom whether a loss of pressure has occurred at the second wheel.
Dependencies are inferred from the claim text.