Abs Component Functions; Abs Block Diagram; Wheel Sensors And Wheel Sensor Rotors - Yamaha R1 Series 2015 Service Manual

ABS block diagram

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11
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1. Front brake master cylinder
2. Rear brake master cylinder
3. Hydraulic unit assembly
4. Rear brake master cylinder pressure sensor
5. Separation solenoid valve
6. Shuttle solenoid valve
7. ABS motor
8. Hydraulic pump
9. Front brake master cylinder pressure sensor
EAS30684

ABS COMPONENT FUNCTIONS

Wheel sensors and wheel sensor rotors

Wheel sensors "1" detect the wheel speed and transmit the rotation signal to the ABS ECU.
Each wheel sensor is composed of a permanent magnet and a hall IC. The sensor rotors "2" rotate with
the wheels. The sensor rotors "2" have 40 slots and are installed close to the wheel sensors. As the
sensor rotor rotates, the hall element in the hall IC installed in the wheel sensor generates pulses. The
pulse frequency, which is proportional to the magnetic flux density, is converted into a wave in the hall
IC so that it can be output.
The ABS ECU calculates the wheel rotation speed by detecting the pulse frequency.
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17
2
5
7
12 12
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16
10.Check valve
11.Buffer chamber
12.Inlet solenoid valve
13.Outlet solenoid valve
14.Rear brake caliper pressure sensor
15.Front brake caliper pressure sensor
16.Rear brake caliper
17.Front brake calipers
1-22
FEATURES
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