Abstract: The invention relates to a method and an apparatus for battery state identification. The battery state is determined by measurement of the voltage of a motor vehicle battery during the starting process over a predetermined time period, determination of a minimum voltage level of the motor vehicle battery during the predetermined time period of the measurement process, assessment of the state of charge of the vehicle battery on the basis of the minimum voltage level, and control of the generator as a function of the assessment of the state of charge of the motor vehicle battery, thus ensuring an adequate supply to the vehicle power supply system and adequate charging of the vehicle battery, while at the same time optimizing the fuel consumption and the emissions.

Abstract: A metering device for a heating appliance has a pump arrangement for the delivery of liquid that is supplied via an inlet region to an outlet region and a valve arrangement by which the pump arrangement is connected with the inlet region to receive liquid or with the outlet device to deliver liquid. The valve arrangement has a valve member that is brought into a first actuating position in which the valve member permits a liquid flow from the inlet region to the pump arrangement and prevents a liquid delivery from the pump arrangement to the outlet region. In a second actuating position the valve member prevents a liquid supply from the inlet region to the pump arrangement and permits a liquid delivery from the pump arrangement to the outlet region.

Abstract: A metering pump device, particularly for a heating appliance has a pump arrangement for the delivery of liquid which can be supplied via an inlet region to an outlet region and also a valve arrangement by means of which the pump arrangement can be selectively brought into connection with the inlet region to receive liquid or into connection with the outlet device for the delivery of liquid. The valve arrangement has a valve member that can be brought into a first actuating position and into a second actuating position. The first actuating position the valve member permits a liquid flow from the inlet region to the pump arrangement and prevents a liquid delivery from the pump arrangement to the outlet region, and in the second actuating position the valve member prevents a liquid supply from the inlet region to the pump arrangement and permits a liquid delivery from the pump arrangement to the outlet region.