Suzuki UK Marine

Suzuki Makes the Ultimate Breakthrough - the New DF300 Provides the Ultimate in Efficiency and Power

Feb 2010

The original, Innovation Award winning, DF300 broke new ground. It was the very first 300 horsepower four stoke outboard and it set a new benchmark for performance and power from a compact and lightweight outboard.

Now Suzuki has taken this Ultimate outboard to the next level. The addition of Suzuki’s Lean Burn Control technology as well as a new Oxygen (O2) Feedback Control System will provide boaters with a dramatic improvement in fuel economy as well as environmental friendly operation, further enhancing the overall performance and value of the DF300, Suzuki’s flagship outboard motor.

Initial tests show the new DF300 to be 15% more economical than the current DF300 without sacrificing on any of the power for which the original model was already famous. In essence – the best is about to get a whole lot better!
The details of the new specifications were revealed at the Miami International Boat Show on February 11th. The new DF300 will feature Suzuki’s Lean Burn Control System, a brand new O2 Feedback Control System and a new, water detecting fuel filter.

Suzuki’s innovative Lean Burn Control System was first introduced on the DF70/80/90 to much acclaim from boaters and the media alike. It predicts fuel needs according to operating conditions allowing the engine to run on a more efficient mixture through the use of a lean air-fuel ratio. This system delivers its benefits over a wide operating range, providing significant improvements in fuel economy from low-speed operation into the cruising range.

By combining this unique Lean Burn Control System with the Suzuki Precision Control, Suzuki’s electronic throttle system, which is already a key feature of the standard DF300, enables infinite electronic control of the fuel flow and air flow, increasing the limit of the controllable revolution range. This improves the fuel economy across a much wider range of engine speeds.
 
The brand new O2 Feedback Control System, which is the first to be employed in a Suzuki outboard, enables the emissions to be more stable and cleaner than prior systems. By monitoring the levels of Oxygen in the exhaust emissions the O2 Feedback Control System provides continuous real-time adjustment to the air fuel ratio, ensuring the optimum amount of fuel whatever the RPM.

In another first, the new generation DF300 will also incorporate a new fuel filter that detects if there is any water in the fuel and warns the operator. Water in the fuel can occur for a number of reasons. If it enters the engine, water can cause poor combustion, lower power output and corrosion. Heavier than the fuel, water accumulates at the bottom of the fuel filter. A float that is heavier than the fuel and lighter than water will be incorporated in the filter and will activate a switch when it rises over a permissible amount. This will then trigger an alert on the console that signals to the operator that there is water in the fuel. On the digital gauges, a “WATER IN FUEL” message appears. At the same time, a buzzer sounds when the engine is in neutral.

All of these new features will make the DF300 even more appealing to both leisure boaters and commercial operators.

Mr Yamamoto, Head of European Marketing Group, Suzuki Motor Corporation said, “Our engineers are always striving for perfection so with this new technology we have made our flagship engine even better. Once again, Suzuki’s technology is set to give our four strokes the edge when it comes to fuel efficiency and clean, environmentally friendly operation without sacrificing on performance.”