Yamaha R1 Series 2015, Service Manual

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FEATURES
1-10
Timing of each control system’s activation
New Traction Control System (TCS) that includes depth of banking as a parameter
A new Traction Control System (TCS) is adopted to effectively bring out the drive force potential of the
rear tire during acceleration. In addition to detecting difference in speed between the front and rear
wheels, the new system uses input on the degree of banking angle calculated by the IMU to adjust the
degree of the TCS to an optimum level in relation to the running conditions in real-time. As the banking
angle increases, the amount of TCS control also increases.
Slide Control System (SCS) for a high level of cornering performance
A Slide Control System (SCS) that functions to control engine output when a sideward slide is detected
in the rear tire is adopted. It adjusts output to an optimum level based on data from the IMU when the
rear tire slides and thus helps the rider focus on the race without distraction. The system supports the
TCS to contribute to smoother ride characteristics.
LIFt control system (LIF) to inhibit time loss due to front-wheel lift and the like
A LIFt control system (LIF) that smoothens machine motion during starts and acceleration is adopted.
When a tendency for front-wheel lift is detected by the IMU and other sensors for machine attitude, en-
gine output is adjusted to the optimum level to compensate for it and thus assist the rider’s machine
control.
Launch Control System (LCS) for sharp out-of-the-hole acceleration
A Launch Control System (LCS) is adopted to help ensure smooth and swift starts off the starting grid
in races. Turning on the LCS keeps engine rpm from rising above approximately 10,000 rpm even with
the throttle fully open, and maintains an optimum level of engine output in conjunction with input from
the TCS and LIF systems. This allows the rider to concentrate on clutch engagement and machine con-
trol to reduce stress during race starts.
a b c d e f
LCS
(Launch Control System)
TCS
(Traction Control System)
SCS
(Slide Control System)
LIF
(Lift Control System)
QSS
(Quick Shift System)
a. Start
b. Accelerate
c. Decelerate
d. Corner
e. Exit
f. Accelerate