RV125K7 (’07-MODEL) 21
COMPENSATION OF INJECTION TIME (VOLUME)
The following different signals are output from the respective sensors for compensation of the fuel injection
time (volume).
INJECTION STOP CONTROL
SIGNAL DESCRIPTION
ENGINE TEMPERATURE SENSOR
SIGNAL
When engine temperature is low, injection time (volume) is
increased.
INTAKE AIR TEMPERATURE
SENSOR SIGNAL
When intake air temperature signal is low, injection time (vol-
ume) is increased.
HEATED OXYGEN SENSOR SIGNAL Air/fuel ratio is compensated to the theoretical ratio from
density of oxygen in exhaust gasses. The compensation
occurs in such a way that more fuel is supplied if detected
air/fuel ratio is lean and less fuel is supplied if it is rich.
ENGINE RPM SIGNAL At high speed, the injection time (volume) is increased.
When starting engine, additional fuel is injected during
cranking engine.
ACCELERATION SIGNAL/
DECELERATION SIGNAL
During acceleration, the fuel injection time (volume) is
increased in accordance with the throttle opening speed and
engine rpm. During deceleration, the fuel injection time (vol-
ume) is decreased.
FUEL INJECTOR DRIVE CURRENT
SIGNAL
ECM detects this current and compensates the injection
time (volume).
SIGNAL DESCRIPTION
TIP-OVER SENSOR SIGNAL
(FUEL SHUT-OFF)
When the motorcycle tips over, the tip-over sensor sends a
signal to the ECM. Then, this signal cuts OFF current sup-
plied to the fuel injector and ignition coil.
OVER-REV. LIMITER SIGNAL The fuel injector stops operation when engine rpm reaches
rev. limit rpm.
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