Method for supplying voltage to a motor vehicle
First Claim
Patent Images
1. A method for supplying voltage to a motor vehicle having a storage battery, a generator driven by an engine of the vehicle, and a regulator for the engine idle rpm, the method comprising the steps of:
- operating the regulator as a function of a respective operating state of the battery; and
subjecting the regulator for the engine idle rpm to a regulating signal which depends on a charge state of the battery, whereby a reduced engine idle rpm is maintained at values lower than a maximum engine idle rpm value for as long as said charge state permits in order to reduce fuel consumption by said motor vehicle.
1 Assignment
0 Petitions
Accused Products
Abstract
In a method for supplying voltage to a motor vehicle with a battery, with a generator driven by the engine of the vehicle, and a device for regulating the idle rpm of the engine as a function of the respective operating state of the battery, the device for regulating the idle rpm is subject to a regulating signal that depends on the charge state of the battery.
-
Citations
18 Claims
-
1. A method for supplying voltage to a motor vehicle having a storage battery, a generator driven by an engine of the vehicle, and a regulator for the engine idle rpm, the method comprising the steps of:
-
operating the regulator as a function of a respective operating state of the battery; and subjecting the regulator for the engine idle rpm to a regulating signal which depends on a charge state of the battery, whereby a reduced engine idle rpm is maintained at values lower than a maximum engine idle rpm value for as long as said charge state permits in order to reduce fuel consumption by said motor vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A method for controlling engine idle rpm in a motor vehicle having a storage battery, a generator driven by an engine of the motor vehicle, and a regulator for regulating the engine idle rpm, the method comprising the steps of:
-
determining a charge balance over a previous operating period; determining the charge state from the previously determined charge balance; maintaining a reduced engine idle rpm value in the event of a negative charge balance until the charge state of the battery drops below a threshold value; only increasing the reduced engine idle rpm value to obtain a balanced charge balance of the battery; and setting a maximum possible engine idle rpm value if said charge state of the battery reaches a lower limit value.
-
Specification