A hydrogen regulation module for a hydrogen internal combustion engine includes a common body that defines therein a gas flow path for a hydrogen stream, the gas flow path extending from an inlet port to an outlet port the common body integrating: a shut off valve to selectively open or close the flow of hydrogen through the gas flow path; a pressure regulating valve configured to regulate the pressure of the hydrogen stream towards the outlet; a purge valve configured to allow purging the gas flow path downstream of the shut off valve; a first pressure relief valve in fluid communication with the gas flow path downstream of the shut off valve and of the pressure regulating valve; and a filter unit to retain particles beyond a predetermined particle size, arranged upstream of the shut off valve and pressure regulating valve. A temperature sensor and a pressure sensor on the hydrogen stream are upstream of the shut off valve and of the pressure regulating valve.

The present invention relates to a device for direct injection of a gaseous fuel, in particular hydrogen, which device comprises: a pressure-control unit which is designed to convert a supplied variable pressure level of the gaseous fuel into a fixed constant output pressure level; a distributor unit which is connected to at least one injector for direct injection of the gaseous fuel, which has been guided through the pressure-control unit, into a combustion chamber; and a fluid connection between the pressure-control unit and the distributor unit in order to guide the gaseous fuel at a constant output pressure downstream towards the distributor unit. The device is characterized in that a flow-control valve is disposed along the fluid connection and designed to adjust the constant output pressure level of the gaseous fuel to a desired target pressure not exceeding the output pressure level.