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Advanced Digital Engine Management, Fuel Injection and Emissions Control Suzuki Suzuki GSXR 711 2011

Each cylinder's secondary injector is mounted at a 15-degree angle and is aimed to bounce sprayed fuel off the The primary injector for each cylinder has been repositioned at a shallower, 35-degree angle from the throttle-body centerline, spraying atomized fuel below the primary butterfly valve and directly down the intake port, improving throttle response. The primary injector for each cylinder operates under all conditions, and the secondary injector adds more fuel during high-rpm, high-load operation. The latest fine-spray injectors each have 8 small holes for improved fuel atomization, which contributes to more complete combustion.

The result is more linear throttle response, increased torque and reduced emissions. The secondary valve is controlled by the ECM, which monitors engine rpm, primary butterfly valve position (or how much throttle the rider has selected) and gear position, then opens or closes the secondary butterfly valve incrementally to maintain the ideal intake air velocity for improved cylinder charging and more efficient and complete combustion. The primary butterfly valve in each throttle body is linked directly by cable (which provides a positive, instantaneous connection between the rider and the machine) to the throttle grip operated by the rider. At the heart of the SDTV system are two linked, double-barrel downdraft throttle bodies, each cylinder getting its own tapered barrel carrying two butterfly valves and two compact fuel injectors. The ECM operates a state-of-the-art Suzuki Dual Throttle Valve (SDTV) closed-loop fuel injection system, an advanced ignition system and several emission control systems, producing better throttle response, smoother power delivery, improved mileage and reduced emissions.

 The GSX-R features a repositioned engine management computer (also known as the Engine Control Module, or ECM) to allow the wiring harness to be simplified and made lighter.

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