FUEL SYSTEM
Electronic Control System
6-40
6LY3 Service Manual
© 2007 Yanmar Marine International
Timer Phase Detection
The timer phase is detected by two pulsar gears
(Figure 6-50)
and is calculated by the ECU from the
deviation of two pulses. The pulsar gear of crankshaft is located on the flywheel.
Figure 6-50
Figure 6-50
Timer phase detection
Top pulse
Top pulse
Top pulse
Crank
pulse
Cam
pulse
360°
Crank angle
0°
-360°
12 pulse
12 +1 pulse
Cam gear
Crank gear
Pulsar gear
0005714