Patent ID: 8621916

Claim:
A system for measuring an injection process, the system comprising: a measurement chamber filled with a fluid; an injection valve configured to inject an amount of the fluid via an injection into the measurement chamber; a piston arranged in the measurement chamber; a sensor configured to generate a voltage, the voltage being a measure of a piston travel, the sensor being connected with an evaluation unit configured to continuously detect the piston travel in the measurement chamber; a rotary displacement pump configured to be driven dependent on an existing volume difference, the rotary displacement pump being arranged in a bypass channel to the measurement chamber; a pressure sensor arranged in the measurement chamber; and at least one of a heating element and a cooling device arranged at the measurement chamber, the at least one of the heating element and the cooling device being configured to be actuated by a controller so that an amount of energy introduced by the amount of the fluid injected by the injection valve and an amount of energy introduced by the at least one of the heating element and the cooling device is substantially constant for every injection.