Method of storing vehicle operating condition parameters
First Claim
1. In a vehicle anti-skid system havingtransducers for detecting operating condition parameters of the vehicle and an evaluation circuit forming control signals to influence braking pressure at predetermined operating conditions of the vehicle, in dependence on the transducer signals,a method for storing operating condition parameters of the vehicle comprising the steps ofsensing when the control signals for influencing the braking pressure are being generated;
- and storing operating condition parameters comprising at least one of;
longitudinal vehicle speedlongitudinal decelerationtransverse vehicle speedtransverse decelerationbraking pathduring the period in which the brake pressure influencing signals are being generated.
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Accused Products
Abstract
An anti-skid brake system for vehicles is proposed in which various transducers for detecting operating condition parameters of the vehicle are provided, which cooperate with an evaluation circuit in such a manner that control signals are formed on the basis of the transducer signals for influencing the brake pressure at predetermined operating conditions. Circuitry are additionally provided which store the operating condition parameters, such as vehicle speed and deceleration, braking path and the like, during the braking event under the predetermined operating conditions; and to control marking of the road surface during these braking events.
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Citations
21 Claims
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1. In a vehicle anti-skid system having
transducers for detecting operating condition parameters of the vehicle and an evaluation circuit forming control signals to influence braking pressure at predetermined operating conditions of the vehicle, in dependence on the transducer signals, a method for storing operating condition parameters of the vehicle comprising the steps of sensing when the control signals for influencing the braking pressure are being generated; -
and storing operating condition parameters comprising at least one of; longitudinal vehicle speed longitudinal deceleration transverse vehicle speed transverse deceleration braking path during the period in which the brake pressure influencing signals are being generated. - View Dependent Claims (3, 5, 6, 7, 8, 9)
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2. In a vehicle anit-skid system having
transducers for detecting operating condition parameters of the vehicle and an evaluation circuit forming control signals to influence braking pressure at predetermined operating conditions of the vehicle, in dependence on the transducer signals, a method for storing operating condition parameters of the vehicle comprising the step of applying markings to the road surface during the period in which the control signals for influencing the brake pressure are being generated.
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10. In a vehicle anti-skid system having
transducers for detecting operating condition parameters of the vehicle and an evaluation circuit forming control signals to influence braking pressure at predetermined operating conditions of the vehicle, in dependence on the transducer signals, a method for storing operating condition parameters of the vehicle comprising the steps of sensing when the control signals for influencing the brake pressure are being generated; -
sensing if the existing slip (λ
) between a wheel of the vehicle and the road surface is below a predetermined slip switching threshold (λ
1);defining, during generation of the brake pressure influencing signals, a test phase (I, II, III, V); reducing the slip switching threshold (λ
1) to a lower predetermined amount (λ
1T) during said test phase if the existing slip was below the slip switching threshold;and generating a record representative of skid marks if the existing slip (λ
) has dropped below the predetermined level of the slip switching threshold (λ
1T). - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification