Abstract: The invention is directed to a starter system for an internal combustion engine, comprising an electric starter; a starter battery for warming up or starting the combustion engine; a temperature measuring device for measuring the temperature of the starter battery; a power electronics module, which actively varies the magnitude of a discharge current drawn from the starter battery for the purpose of warming up or starting the engine; and a control device, feeding the power electronics module with the value of the discharge current to be varied, where, at low battery temperatures, the maximum discharge current is lower than at high temperatures. The invention is also directed to a method for starting an internal combustion engine.

Abstract: The invention concerns a drive system, especially for a vehicle, with a drive unit, especially an internal combustion engine, a transmission with variable transmission ratio between drive unit and drive, and especially with a continuously variable transmission ratio or one variable in fine gradations, at least one additional unit driven by the drive unit, especially an electric generator, a control, which selects the transmission ratio within a range of possible transmission ratios, so that the highest possible efficiency is achieved with joint consideration of the individual efficiency functions of the vehicle drive and the additional unit(s) and their drive, in which the individual efficiency functions are incorporated in the total efficiency with a weight corresponding to the power fraction of the vehicle drive and additional unit(s). The invention is also geared toward a corresponding method.