Abstract: An exhaust system (10) for a dual fuel engine comprising a catalyst assembly comprising a first catalyst (4) comprising a methane oxidizing catalyst and a second catalyst (6) comprising a selective catalytic reduction catalyst, the first catalyst (4) being positioned upstream of the second catalyst (6).

Abstract: A storage tank assembly for storage of cryogenic liquids including a first outer tank and a second, inner tank, the first and second tanks being spaced apart from one another to form an insulation space therebetween. Each of the first and second tanks has a first end, and an opposite second end spaced apart from the first end, and a wall extending from the first end to the second end. The assembly further includes a pipe work system comprising a plurality of pipes and a first connector extending through the wall of the first tank, the pipe work being connectable to the first connector such that the pipe work is spaced apart from the wall of the first tank.

Abstract: An exhaust system (10) for a dual fuel engine, which engine is adapted to operate in a first mode in which the engine is fuelled entirely by a liquid fuel, and a second mode in which the engine is fuelled predominately by a gaseous fuel, the system comprising a first oxidation catalyst (22), a first temperature sensor (30) adapted to measure a core temperature of the first oxidation catalyst, and a controller (32) for controlling whether the engine operates in the first mode or the second mode, wherein the first temperature sensor is operatively connectable to the controller such that the controller prevents the engine from running in the second mode if the core temperature of the first oxidation catalyst is below a predetermined temperature.

Abstract: A multi-mode engine system comprising a first mode in which the engine is fuelled substantially entirely by a first fuel, and a second mode in which the engine is fuelled substantially entirely by a second fuel, or by a mixture of the first and second fuels, the engine comprising: a first engine control unit (ECU) for controlling the flow of the first fuel into the engine when the engine is operating in the first mode; and a second ECU operatively connected to the first ECU; wherein the first ECU comprises: a signal receiver for receiving the first input signals, and an output for emitting a first output signal; and the second ECU being adapted to modify the first output signal when the engine is running in the second mode to produce a first modified signal and a second calculated signal.

Abstract: A method for controlling an engine in either a first mode in which the engine is fuelled by a first fuel, or in a second mode in which the engine is fuelled by a mixture of the first fuel and a second fuel, the method comprising the steps of programming the engine to operate initially in the first mode, repeatedly sensing a plurality of first variables and obtaining a measured value for each sensed first variable, and emitting a first input signal dependent on the measured value of each sensed first variable, causing a first output signal, comprising a plurality of injector control signals, to be emitted in dependence on the first input signals for controlling the amount of the first fuel supplied to the engine, switching the mode of operation to the second mode, selecting one or more of the injector control signals to produce a first modified signal, which determines the amount of first fuel supplied to the engine and generating a second calculated signal, which determines the amount of second fuel supplied

Abstract: An injector emulation device for incorporation into a multiple fuel engine control system including a first control device (4) configured to operate a plurality of fuel injectors (10) to inject a first fuel into selected cylinders (8) of the engine (6) when the system is operating on the first fuel only and a second control device (54) arranged to operate, instead of the first control device (4), said plurality of injectors (10) to inject said first fuel when the system operates in multifuel mode, said first control device being connected to an injector emulation device for operation during said multifuel mode. The injector emulation device includes an electrical load device (157) arranged to mimic the electrical load characteristic of the injector (10) being emulated and further including electronic means which mimic the inductance and flyback characteristics of the injector (10) being emulated.

Abstract: An exhaust system (10) for a dual fuel engine comprising a catalyst assembly comprising a first catalyst (4) comprising a methane oxidising catalyst and a second catalyst (6) comprising a selective catalytic reduction catalyst, the first catalyst (4) being positioned upstream of the second catalyst (6).

Abstract: A storage tank assembly for storage of cryogenic liquids comprising a first outer tank and a second, inner tank, the first and second tanks being spaced apart from one another to form an insulation space, each of the first and second tanks having a first end, and an opposite second end spaced apart from the first end, and a wall extending from the first end to the second end, the assembly further comprising a pipe work system comprising a plurality of pipes and a first connector extending through the wall of the first tank, the pipe work being connectable to the first connector such that the pipe work is spaced apart from the wall of the first tank.