Abstract: Engine system comprising a compression ignition engine (20) including at least one combustion chamber and a cold flame vaporizer (40) in which a fuel is partially oxidized in preheated air to form a cold flame gas. The cold flame vaporizer (40) is in fluid communication with the combustion chamber of the compression ignition engine (20). There is further provided means (50) for supplying air such that the cold flame gas can be mixed with the additional air before being injected into the combustion chamber, and means (22) for injecting a pilot fuel into the combustion chamber, thereby producing a pilot flame in the combustion chamber which ignites the mixture of cold flame gas and air. There is also provided a method for a substantially NOx-free combustion of diesel fuel in a compression ignition engine (20).

Abstract: A hydrogen system (10) comprising a reformer (12), in which a vaporized hydrocarbon fuel (50) is reformed to yield a reformate gas (62) comprising hydrogen, and a hydrogen consumer (40), the reformer and the hydrogen consumer being arranged in fluid communication such that the reformate gas can be fed to the hydrogen consumer, the hydrogen consumer, when in use, consuming at least a part of the hydrogen produced by the reformer wherein the hydrogen system further comprises:—an off gas burner (35) which is arranged such that it is in fluid communication with the hydrogen consumer and a first heat exchanger (21), in which offgas burner, when in use, remaining reformate gas in offgas from the hydrogen consumer is combusted, producing exhaust gas (53) which is passed through the first heat exchanger;—at least one air pump (30) which is arranged such that it is in fluid communication with the reformer and the offgas burner, the at least one air pump, when in use, supplying air to said reformer and offgas burner,—a

Abstract: There is described an exhaust gas cleaning apparatus for the cleaning of exhaust gas which originates from a combustion process in a combustion chamber. The exhaust gas cleaning apparatus comprises an exhaust gas flow path which is arranged in fluid communication with the combustion chamber and through which the exhaust gas is flowing, and a cold flame gas supply which provides a cold flame gas. The cold flame gas supply is arranged in fluid communication with the exhaust gas flow path such that the cold flame gas can be injected into the exhaust gas flowing in the exhaust gas flow path and thereby, at least partly, remove impurities such as particulate matter, NOx and hydrocarbons, which are present in the exhaust gas. There is also described a method for cleaning of exhaust gas.