Cover of an internal combustion engine assembly having a common rail, engine assembly and automotive vehicle including such a cover

Cover for an internal combustion engine assembly comprising a pressurized fuel accumulator feeding fuel to at least one injector, the cover defining, with a cylinder head, a volume designed to receive the pressurized fuel accumulator and the injector, the cover bordering a first sub-volume, designed to receive the injector, and a second sub-volume separated from the first sub-volume by a separation wall of the cover and designed to receive the pressurized fuel accumulator, wherein the cover includes a frame to be fitted on the cylinder head and a cap removably fitted on the frame, and

• wherein the separation wall is designed for the passage of a fuel connection connecting the injector to the pressurized fuel accumulator,
• wherein the frame defines a first contour of the frame bordering the first sub-volume and a second contour of the frame bordering the second sub-volume,
• wherein the cap includes walls defining a first contour of the cap coinciding with the first contour of the frame and a second contour of the cap coinciding with the second contour of the frame, and
• wherein, when the cap is assembled to the frame, the first contour of the cap and the first contour of the frame match to define the first sub-volume and the second contour of the cap and the second contour of the frame match to define the second sub-volume.