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Air assisted direct injection systems have been in commercial production for four years having established themselves as a technical breakthrough in the pursuit of low-emission two-strokes, whilst providing the end-user with smooth operation and a significant reduction to fuel consumption. The same core technology has demonstrated significant advantages for automotive direct injected four-stroke engines. For the non-automotive sector, research has since aimed to provide manufacturers with alternate cost-function options, thus extending market penetration opportunities for low cost air assist DI. By extensively benchmarking the air assisted direct injection system applied to customer marine products, Orbital engineers are developing significantly simplified systems which inherit the most performance-critical aspects of the existing production system, whilst eliminating some of the components required in today's production system.

Air Assisted Direct in-cylinder injection systems have now been in commercial production for over 18 months in large two-stroke outboard applications, offering the customer the advantage of emissions control, significant fuel economy improvements, smooth and misfire-free operation and improved driveability. With the pending implementation of emission controls in most two-stroke engine applications, the fuel system of choice must be capable of being adapted in a short time period to a new or given application. Over the last three years, the air assisted direct injection system has been successfully applied across a range of cylinder displacements from 50 to 500cc. In all applications, the in-cylinder injection system's hardware has been maintained common in order to share in the benefits of economies of high volume production.