A fuel additive system includes a fuel supply having an intake manifold, a fuel tank, a fuel supply line, and a fuel delivery system. A fuel additive supply is fluidly connected to the fuel supply for adding fuel additive to fuel from the fuel supply. The fuel additive supply includes a fuel additive tank and a fuel additive supply line connecting the fuel additive tank to the fuel supply.

A ship propulsion system comprises at least one internal combustion engine with a combustion chamber for burning a fuel and a turbocharger with a compressor in an intake tract of the internal combustion engine. The ship propulsion system further comprises an electrolysis device, which produces hydrogen and oxygen gas, which are added on a pressure side of the compressor and conducted to the internal combustion engine. Moreover, a water tank and an alcohol tank are connected to a pressure side of the compressor in order to add water and alcohol to the charge air.

An internal combustion engine has a combustion chamber, an intake tract through which air can flow, a first tank for a liquid spark-ignition fuel, a second tank for water, a mixing region, in which the spark-ignition fuel from the first tank is to be mixed with the water from the second tank thereby creating a mixture having the spark-ignition fuel and the water, an injection valve which is allocated to the combustion chamber and by which the mixture can be injected directly into the combustion chamber, and a second injection valve which is allocated to the combustion chamber and provided in addition to the injection valve and by which in relation to the water and the spark-injection fuel, only the spark-injection fuel from the first tank can be injected at a location upstream of the combustion chamber into the intake tract and thus into the air flowing through the intake tract.

A dual-fuel fuel injection system for an internal combustion engine has a liquid fuel injection branch and a gas fuel injection branch, in which a gas injector assembly that is controllable via a control fluid is situated. The liquid fuel forms the control fluid of the gas injector assembly.

A dual-fuel fuel injection system for an internal combustion engine has a liquid fuel injection branch and a gas fuel injection branch, in which a gas injector assembly that is controllable via a control fluid is situated. The liquid fuel forms the control fluid of the gas injector assembly.

A fuel distributor, for example that is usable as a fuel rail for mixture-compressing spark-ignition internal combustion engines, includes a main body, on which a plurality of high-pressure outlets are provided. The main body includes at least one dividing wall that at least largely separates an inflow region from a damping region within the main body. The main body is made up of at least two profiles that are joined to each other.

A fuel distributor, for example that is usable as a fuel rail for mixture-compressing spark-ignition internal combustion engines, includes a main body, on which a plurality of high-pressure outlets are provided. The main body includes at least one dividing wall that at least largely separates an inflow region from a damping region within the main body. The main body is made up of at least two profiles that are joined to each other.

A fuel circulation system of a diesel type engine configured to use carbonaceous aqueous slurry or emulsion fuels. The diesel type engine includes a fuel injection system which is fluidly connected to the fuel circulation system. The fuel circulation system comprises: at least one fuel feed pump comprising a positive displacement pump located in the fuel circulation system before the fuel injection system, the fuel feed pump configured to supply a controlled amount of carbonaceous aqueous slurry fuel to the fuel injection system; and at least one volumetric flow controller comprising at least one of a second positive displacement pump configured to operate in reverse as a positive displacement pressure let-down device, or a volumetric flow valve operated as a positive displacement pressure let-down device, the volumetric flow controller located in the fuel circulation system after the fuel injection system, the volumetric flow controller providing a controlled regulation of return flow/fuel system pressure from the fuel injection system from zero to maximum flow/pressure.

A fuel circulation system of a diesel type engine configured to use carbonaceous aqueous slurry or emulsion fuels. The diesel type engine includes a fuel injection system which is fluidly connected to the fuel circulation system. The fuel circulation system comprises: at least one fuel feed pump comprising a positive displacement pump located in the fuel circulation system before the fuel injection system, the fuel feed pump configured to supply a controlled amount of carbonaceous aqueous slurry fuel to the fuel injection system; and at least one volumetric flow controller comprising at least one of a second positive displacement pump configured to operate in reverse as a positive displacement pressure let-down device, or a volumetric flow valve operated as a positive displacement pressure let-down device, the volumetric flow controller located in the fuel circulation system after the fuel injection system, the volumetric flow controller providing a controlled regulation of return flow/fuel system pressure from the fuel injection system from zero to maximum flow/pressure.

An engine including a main fuel injection valve, a pilot fuel injection valve, a liquid fuel supply rail pipe, and a pilot fuel supply rail pipe. The main fuel injection valve supplies liquid fuel from the liquid fuel supply rail pipe to a combustion chamber during combustion in a diffusion combustion system. The pilot fuel injection valve supplies pilot fuel from the pilot fuel supply rail pipe to the combustion chamber in order to ignite gaseous fuel during combustion in a premixed combustion system. The liquid fuel supply rail pipe is disposed at one side of an imaginary vertical plane including an axis of a crank shaft. The pilot fuel supply rail pipe is disposed at the side of the imaginary vertical plane at which the liquid fuel supply rail pipe is disposed.