Abstract: The system relates to a diaphragm pump, comprising an intake port for receiving fluid, a discharge port for outputting fluid, a first pump chamber, a second pump chamber separated from the first pump chamber, a diaphragm, which at least partly separates the first pump chamber from the second pump chamber, wherein the first pump chamber and the second pump chamber each have a connection both to the intake port and to the discharge port, said connection being suitable for fluid communication, and wherein at least one valve is provided, which prevents fluid flow from the first pump chamber and the second pump chamber to the intake port and prevents fluid flow from the discharge port to the first pump chamber and the second pump chamber.

Abstract: The system relates to a leakage diagnosis system and method for a tank of a vehicle, comprising at least one first connection point and a second connection point, which are each designed to be connected to the tank or to be open to an environment, at least one diaphragm pump which is designed for conveying fluid from the first connection point to the second connection point, at least one ventilation valve which is connected parallel to the diaphragm pump between the first connection point and the second connection point and which is designed to be switched into a first position in which the first connection point and the second connection point are fluidically connected, and into a second position which prevents a fluid flow at least from the second connection point to the first connection point, and at least one evaluation unit which is designed to operate the diaphragm pump, to switch the ventilation valve into the second position and to determine a pressure, in particular a pressure curve, in the connected

Abstract: The system relates to a leakage diagnosis system and method for a tank of a vehicle, comprising at least one first connection point and a second connection point, which are each designed to be connected to the tank or to be open to an environment, at least one diaphragm pump which is designed for conveying fluid from the first connection point to the second connection point, at least one ventilation valve which is connected parallel to the diaphragm pump between the first connection point and the second connection point and which is designed to be switched into a first position in which the first connection point and the second connection point are fluidically connected, and into a second position which prevents a fluid flow at least from the second connection point to the first connection point, and at least one evaluation unit which is designed to operate the diaphragm pump, to switch the ventilation valve into the second position and to determine a pressure (curve) in the connected tank, in order to deduce

Abstract: The system relates to a diaphragm pump, comprising an intake port for receiving fluid, a discharge port for outputting fluid, a first pump chamber, a second pump chamber separated from the first pump chamber, a diaphragm, which at least partly separates the first pump chamber from the second pump chamber, wherein the first pump chamber and the second pump chamber each have a connection both to the intake port and to the discharge port, said connection being suitable for fluid communication, and wherein at least one valve is provided, which prevents fluid flow from the first pump chamber and the second pump chamber to the intake port and prevents fluid flow from the discharge port to the first pump chamber and the second pump chamber.

Abstract: The system relates to a leakage diagnosis system and method for a tank of a vehicle, comprising at least one first connection point and a second connection point, which are each designed to be connected to the tank or to be open to an environment, at least one diaphragm pump which is designed for conveying fluid from the first connection point to the second connection point, at least one ventilation valve which is connected parallel to the diaphragm pump between the first connection point and the second connection point and which is designed to be switched into a first position in which the first connection point and the second connection point are fluidically connected, and into a second position which prevents a fluid flow at least from the second connection point to the first connection point, and at least one evaluation unit which is designed to operate the diaphragm pump, to switch the ventilation valve into the second position and to determine a pressure (curve) in the connected tank, in order to deduce