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US 6,142,124 AGranted
Method and device for controlling a load
AssigneeRobert Bosch GmbH
InventorsWerner Fischer, Dietbert Schoenfelder
Life of this patent
Estimating the term…
Abstract
A method and a device for controlling a load, in particular a solenoid valve for controlling the quantity of fuel to be injected. The load receives a bias current value before being activated. This bias current value is adapted.
Claims16
A method for controlling a load capable of receiving different current values in different phases, comprising the steps of:
- before an activation of the load, receiving at the load a bias current value that is less than a current value for causing a response in the load;
- adapting the bias current value as a function of a switching time of the load;
- maintaining the bias current value at a predetermined level for a time period prior to activation of the load.
A method for controlling a load capable of receiving different current values in different phases, comprising the steps of:
- before an activation of the load, receiving at the load a bias current value that is less than a current value for causing a response in the load;
- and
- adapting the bias current value as a function of a switching time of the load by:
- increasing the bias current value, and
- analyzing a change in the switching time of the load.
2 more elements
A method for controlling a load capable of receiving different current values in different phases, comprising the steps of:
- before an activation of the load, receiving at the load a bias current value that is less than a current value for causing a response in the load;
- and
- adapting the bias current value as a function of a switching time of the load, wherein the step of adapting the bias current value includes the substeps of:
- increasing the bias current value,
- analyzing a change in the switching time of the load, and
- reducing the increased bias current value by a safety margin when at least one of a sudden change in the switching time and a predetermined change in the switching time by more than a threshold value occurs.
3 more elements
A method for controlling a load capable of receiving different current values in different phases, comprising the steps of:
- before an activation of the load, receiving at the load a bias current value that is less than a current value for causing a response in the load;
- adapting the bias current value as a function of a switching time of the load;
- and
- repeating cyclically the step of adapting the bias current value during a driving cycle.
1 more element
A device for controlling a load, comprising:
- an activation device supplying the load with different current values in different phases, wherein the load receives, before being activated, a bias current value that is less than a current value for causing a response in the load;
- and
- an arrangement adapting the bias current value as a function of a switching time of the load;
- wherein the switching time of the load is shortened as a function of the adapted bias current value.
1 more element
A method for controlling a load capable of receiving different current values in different phases, comprising the steps of:
- before an activation of the load, receiving at the load a bias current value that is less than a current value for causing a response in the load;
- and
- adapting the bias current value as a function of a switching time of the load by:
- increasing the bias current value, and
- reducing the increased bias current value by a safety margin when at least one of a sudden change in the switching time and a predetermined change in the switching time by more than a threshold value occurs.
2 more elements
A method for controlling a load capable of receiving different current values in different phases, comprising the steps of:
- before an activation of the load, receiving at the load a bias current value that is less than a current value for causing a response in the load;
- and
- adapting the bias current value as a function of a switching time of the load, the switching time of the load being shortened as a function of the adapted bias current value.
A method for controlling a load capable of receiving different current values in different phases, comprising the steps of:
- before an activation of the load, receiving at the load a bias current value that is less than a current value for causing a response in the load;
- and
- adapting the bias current value as a function of a switching time of the load by:
- continuously increasing the bias current value until the bias current value reaches a predetermined threshold value, the predetermined threshold value being indicative of a minimum value at which the switching time of the load is shortened.
1 more element
A device for controlling a load, comprising:
- an activation device supplying the load with different current values in different phases, wherein the load receives, before being activated, a bias current value that is less than a current value for causing a response in the load;
- and
- an arrangement adapting the bias current value as a function of a switching time of the load, the arrangement performing the following:
- increasing the bias current value,
- analyzing a change in the switching time of the load, and
- reducing the increased bias current value by a safety margin when at least one of a sudden change in the switching time and a predetermined change in the switching time by more than a threshold value occurs.
3 more elements
A device for controlling a load, comprising:
- an activation device supplying the load with different current values in different phases, wherein the load receives, before being activated, a bias current value that is less than a current value for causing a response in the load;
- and
- an arrangement adapting the bias current value as a function of a switching time of the load, the arrangement performing the following:
- increasing the bias current value, and
- reducing the increased bias current value by a safety margin when at least one of a sudden change in the switching time and a predetermined change in the switching time by more than a threshold value occurs.
2 more elements
A device for controlling a load, comprising:
- an activation device supplying the load with different current values in different phases, wherein the load receives, before being activated, a bias current value that is less than a current value for causing a response in the load;
- and
- an arrangement adapting the bias current value as a function of a switching time of the load, the arrangement continuously increasing the bias current value until the bias current value reaches a predetermined threshold value, the predetermined threshold value being indicative of a minimum value at which the switching time of the load is shortened.
A device for controlling a load, comprising:
- an activation device supplying the load with different current values in different phases, wherein the load receives, before being activated, a bias current value that is less than a current value for causing a response in the load;
- and
- an arrangement adapting the bias current value as a function of a switching time of the load, the arrangement maintaining the adapted bias current value at a predetermined level for a time period prior to activation of the load.
Dependencies are inferred from the claim text.