Method and device for controlling a drive unit
First Claim
1. A method for controlling a drive unit having an output quantity, the method comprising the steps of:
- determining a maximum permissible value of said output quantity;
initiating measures when the instantaneous value of said output quantity exceeds said maximum permissible value;
forming said maximum permissible value on the basis of an accelerator pedal position; and
, filtering said maximum permissible value in at least one operating state in accordance with the dynamic of an intake manifold of an internal combustion engine with said filtering including a dead zone member which represents the dead time in said intake manifold.
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Accused Products
Abstract
A method and an arrangement for controlling a drive unit are suggested wherein a maximum permissible value of an output quantity is determined. This maximum permissible value is compared to the actual value and, when the permissible value is exceeded by the actual value, reaction measures are initiated. The maximum permissible value is filtered at least in one operating state in accordance with filter means including a filter and a dead zone member. Furthermore, the maximum permissible value is continuously reduced in dependence upon the approaching of at least one quantity to a limit value. This quantity represents an operating state.
99 Citations
10 Claims
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1. A method for controlling a drive unit having an output quantity, the method comprising the steps of:
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determining a maximum permissible value of said output quantity;
initiating measures when the instantaneous value of said output quantity exceeds said maximum permissible value;
forming said maximum permissible value on the basis of an accelerator pedal position; and
,filtering said maximum permissible value in at least one operating state in accordance with the dynamic of an intake manifold of an internal combustion engine with said filtering including a dead zone member which represents the dead time in said intake manifold. - View Dependent Claims (2, 3)
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4. A method for controlling a drive unit having an output quantity, the method comprising the steps of:
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determining a maximum permissible value of said output quantity;
initiating measures when the instantaneous value of said output quantity exceeds said maximum permissible value; and
,continuously reducing said maximum permissible value in dependence upon a distance of at least one variable from a limit quantity with said variable indicating a specific operating state. 5.The method of claim 4, wherein splines are utilized for determining a reduction quantity. - View Dependent Claims (5, 6)
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7. A method for controlling a drive unit having an output quantity, the method comprising the steps of:
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determining a maximum permissible value of said output quantity;
initiating measures when an instantaneous value of said output quantity exceeds said maximum permissible value; and
,determining said maximum permissible value in dependence upon at least one of a minimum charge and a minimum value which is formed utilizing an engine-temperature dependent value when an additional torque request is present.
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8. An arrangement for controlling a drive unit having an output quantity, the arrangement comprising:
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a control unit including;
means for forming a maximum permissible value for said output quantity;
means for initiating reaction measures when an instantaneous value exceeds said maximum permissible value;
filter means for filtering said maximum permissible value; and
,said filter means including a dead zone member derived from an intake manifold dead time.
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9. An arrangement for controlling a drive unit having an output quantity, the arrangement comprising:
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a control unit including;
means for forming a maximum permissible value for said output quantity;
means for initiating reaction measures when an instantaneous value exceeds said maximum permissible value; and
,correcting means for continuously reducing said maximum permissible value in dependence upon a distance of at least one variable from a limit quantity with said variable indicating a specific operating state.
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10. An arrangement for controlling a drive unit having an output quantity, the arrangement comprising:
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a control unit including;
means for forming a maximum permissible value for said output quantity;
means for initiating reaction measures when an instantaneous value exceeds said maximum permissible value; and
,means for determining said maximum permissible value in dependence upon at least one of a minimum charge and a minimum value which is formed utilizing an engine-temperature dependent value when an additional torque request is present.
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Specification