Warm-Up Enrichment - Yamaha XV1700PCRC Service Manual

• Warm-up enrichment

When the engine temperature is low, a warm-up coefficient is applied in accordance with the signals
from the engine temperature sensor in order to effect fuel enrichment. Because the engine temper-
ature determines the coefficient, the coefficient changes with the fluctuations in the engine tempera-
ture. The coefficient increases with the decrease in the engine temperature, and decreases with the
increase in the engine temperature. The ratio of fuel enrichment also changes with the changes in
the coefficient.
Changes in compensation coefficient and compensation injection duration
1.0
Engine temperature
Low
Changes in compensation coefficient
Long
Injection
duration
Short
60 (˚C)
High
1 - 25
FEATURES
Warm-up enrichment
Basic injection duration
Compensation injection duration
GEN
INFO
Duration