Bombardier Recreational Products & Vehicles (BRP) has introduced a new two-stroke direct-injection outboard engine that produces up to 75% fewer total regulated emissions, with 15% better fuel efficiency and 20% more torque than leading four-stroke engines: the G2 engines, the next generation of Evinrude E-TEC outboard engines. Engine output ranges from 200 to 300 hp.
They new G2 engines—3.4-liter (3441 cc) V6 (74˚) outboards—release one-fifth of the carbon monoxide emissions of a four-stroke engine at idle and are compliant with stringent US Environmental Protection Agency (EPA), European Union (EU), and California Air Resources Board (CARB) 3-Star ultra-low emissions standards.
Using advanced computational fluid dynamics software developed by the University of Wisconsin, BRP crafted the entire engine around the moment of combustion and developed the first outboard engine block designed specifically for direct-injection technology.
The E-TEC incorporates pistons made from a new alloy originally developed by NASA. This alloy has proven to be 2 to 3 times stronger at operating temperature than the aluminum alloys pistons are traditionally made with. The pistons are full-skirt pistons; the internal design of the block (the intake, exhaust and transfer ports) doesn’t require machining “port windows” into the piston. This combined with the new alloy, increase the piston strength and durability.
The efficient piston/cylinder design provides performance while also providing 15% more fuel efficiency versus competitive outboards.
Improvements Bombardier initiated to the Engine Management Module (EMM) beginning with 2002 production—such as a 30% thicker pc board and increased cooling for components— have been designed into the EMM for the Evinrude E-TEC outboards.
BRP’s ICON Throttle allows the control and synchronization of multiple engines at the same time while fine tuning the RPMs by 1% increments to find the perfect combination to maximize fuel economy.