Method for controlling charging of battery of e.g. inline-4 engine for supplying energy to pump of motor car, involves charging battery via auxiliary generator when charging condition of battery lies below high threshold value

摘要

The method involves conducting intake air through a throttle bypass (204) around a throttle (62) and through a turbine (206) for driving an auxiliary generator (210), and charging a battery (212) via the auxiliary generator when a charging condition of the battery lies below a high threshold value. The valve is arranged in an intake channel of an engine (10). A mechanically driven primary generator (214) is used for charging the battery in addition to the auxiliary generator only when the charging condition of the battery is smaller than a low threshold value or when a vehicle runs slow. An independent claim is also included for a system controlling charging of a battery of a multi-cylinder engine.