• The Vulcan 1700 takes advantage of FI and exhaust tuning optimized for maximum performance in the low-mid-rpm range, giving it plenty of grunt on the boulevard
• Utilizes one sensor in place of the usual three, for simplicity and light weight
• Based on the systems used by the Ninja 650R and Vulcan 900 motorcycles
Electronic Throttle Valve System
• Fully electronic throttle actuation system enables the ECU to control the volume of intake air (via throttle valve angle) and fuel (via fuel injector timing) delivered to the engine
• Optimized fuel injector timing and throttle valve position results in accurate, powerful engine response
• Control of both fuel injection and airflow provides easy starting and precise cold-engine idle speed control
• From the rider’s perspective, the ETV works like a standard cable-operated throttle
• the throttle grip is still connected to cables, so the feel at the grip is the same
• Twisting the throttle turns a pulley on the throttle body which triggers the Accelerator Position Sensor (APS) to send a signal to the ECU, which then modulates the throttle valves via a DC motor
• Accurate throttle position is relayed to the ECU by a Throttle Position Sensor (TPS)
• APS and TPS send two sets of signals to the ECU for system redundancy in the unlikely event of a sensor failure