INTERNAL COMBUSTION ENGINE AND METHOD FOR OPERATING SUCH ENGINE

Internal combustion engine (100) and method for operating an internal combustion engine (100), comprising a fluid reservoir (110, 114) connectable to either an intake manifold (192) or an exhaust manifold (101) of the internal combustion engine (100), pumping means (102) for pumping a fluid, and regulating means (111, 130, 150, 160, 171) for directing or controlling the flow of the fluid, wherein the regulating means (111, 130, 150, 160, 171) is configurable to fill the fluid reservoir (110, 114) with fluid pumped by the pumping means (102), wherein the regulating means (111, 130, 150, 160, 171) is configurable to connect the reservoir (110, 114) to either the intake manifold (192) or the exhaust manifold (101) depending on an operating mode of the internal combustion engine (100) for releasing fluid from the reservoir (110, 114) into the intake manifold (192) and the exhaust manifold (101) respectively.