Abstract:
The invention relates to a fuel cell system assembly comprising at least two coupled fuel cell systems (A, B) that can be operated at different load points, each fuel cell system (A, B) being connected to a respective cooling circuit (3A, 3B) comprising a circulating coolant, via a coolant supply line (1A, 1B) and a coolant drain line (2A, 2B). According to the invention, the cooling circuits (3A, 3B) are coupled via a common return line (4), via which the coolant supply lines (1A, 1B) can be supplied with coolant, and a return conduit of at least one ancillary unit (5, 6), for example an electric heating device (5) and/or a heater core (6), is connected to the common return line (4).
Abstract:
The invention relates to a piston accumulator (1) and a method for determining a position of a piston (5) that can be moved inside a housing (3) of the piston accumulator (1). One or more inductive sensors (15) are arranged on an exterior surface (21) of the housing (3) and configured to detect a movement of the piston (5) inside the housing (3) caused by electromagnetic induction. In this way, a determination of the current position of the piston (5), which is technically simple to realise and contact-free, can be implemented and used, for example, to monitor a charge state of the piston pressure accumulator (1).