Yamaha FJR1300R, Service Manual

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GEN
INFO
FEATURES
• Deceleration control
Deceleration control is effected in accordance with the signals from the throttle position sensor. As
the rider operates the accelerator to decelerate the motorcycle that is in motion, the throttle position
sensor acutates in unison with the accelerator. When the engine speed is greater than a prescribed
value with the throttle fully closed (thus applying engine braking), the ECU executes a deceleration
fuel cut-off. The injection of fuel to all the cylinders is stopped when fuel cut-off control is executed,
thus improving fuel economy.
È
Engine speed
É
Duration
Ê
Fuel cut-off control (stopping fuel injection)
Ë
Basic injection duration
Ì
Basic injection duration
• Over-revving control
This function effects fuel cut-off control when the engine speed becomes greater than the pre-
scribed value. The fuel cut-off control regulates the engine speed by stopping the injection of fuel
into two cylinders when the engine speed becomes greater than the specified value. If the engine
speed increases further, this control stops the injection of fuel to all the cylinders. Thus, the over-
revving control effects fuel cut-off control in two stages.