A system for measuring an injection process in a combustion engine includes a tank configured to hold a fuel. A storage container is configured to hold a compressed fuel. At least one injection valve is arranged at the storage container. A fuel line in which a fuel conveying pump and a high-pressure fuel pump are arranged. The fuel conveying pump and the high-pressure fuel pump are configured to convey the fuel into the storage container. A first pressure sensor is configured to measure a pressure in the storage container. A detection device is configured to detect control data of the at least one injection valve. A measuring device is arranged in the fuel line. The measuring device is configured to measure a temporally resolved volumetric or gravimetric flow process. A processor is connected to the measuring device and to the first pressure sensor via a data transmission line.
