Ignition And Fuel Injection Timing - Yamaha F200A Supplementary Service Manual

GEN
INFO
General information

Ignition and fuel injection timing

This engine adopted the group injection system that the fuel required for one combustion is injected
twice per one cycle.
Therefore, the injector driving circuits can be integrated to 3 circuits and a simpler electrical struc-
ture is obtained.
Firing order : #1, #2, #3, #4, #5, #6
Injection order : #1 and #4 → #2 and #5 → #3 and #6 (group injection)
Cylinder
Cylinder #1
Ignition
Injection
Cylinder #2
Ignition
Injection
Cylinder #3
Ignition
Injection
Cylinder #4
Ignition
Injection
Cylinder #5
Ignition
Injection
Cylinder #6
Ignition
Injection
5
Crankshaft angle
180˚
120˚
Compression TDC Combustion
Intake Compression
Intake
Exhaust Intake
Combustion Exhaust
Combustion
https://www.boat-manuals.com/
720˚
Exhaust
Combustion
TDC
Compression Combustion
TDC
Compression
Intake
Exhaust
Intake
: Ignition spark
: Wasted spark
Intake
Exhaust
Exhaust
Combustion
TDC
Compression
TDC
Compression
S60L1190
60L3D1X