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HONDA ‘BLASTS’ ITS COMPETITION OUT OF THE WATER

Honda’s revolutionary Boosted Low Speed Torque (BLAST™) system, featured in the new BF75 and BF90, pioneers a new age in four-stroke outboard engines.

Developed to improve acceleration at lower speeds, BLAST™ results in powerful hole shot performance – equivalent to that of rivalling two-stroke outboards – to get boats on the plane quicker.

Honda Marine technical officer Darren Milgate said the ‘air/fuel ratio linked ignition timing control technology’ bridged the acceleration gap between two-stroke and four-stroke outboards.

Honda’s BLAST™ system, featured in the new BF75 and BF90 four-stroke outboards, results in powerful hole shot acceleration on par with that of two-stroke engines.

“Hole shot acceleration of Honda’s new BF75 and BF90 is improved by MBT trace control – MBT standing for Minimum advance for Best Torque,” Mr Milgate said.

“The engine’s Electronic Command Module (ECM) determines throttle opening during acceleration and advances the ignition timing to develop more horsepower at low revs.

“A quick movement of the throttle control lever activates the BLAST™ system, aggressively advancing the ignition curve.

“Upon slow advancement of the throttle control lever, a mild ignition spark advance curve is initiated.”

During acceleration, the air/fuel ratio goes to a richer air/fuel ratio setting, which is more fuel than the engine demands. At that point, the ECM – receiving information from the throttle sensor and other engine sensors – determines the best spark advance by tracing the ignition timing (-1° to knock limit) for best air/fuel ratio.

“In a nutshell, the resultant boost in horsepower and torque at low revs contributes to very strong acceleration from 0-50m to get the boat on the plane quickly, something which was traditionally considered a weak point of four-stroke outboards,” Mr Milgate said.

“Not anymore!

“This patented technology will be the global benchmark for future four-stroke outboard engine designs.”

Further information: Honda – (03) 9270 1111 or visit: www.honda.com.au