Compensation Of Injection Time (Volume); Injection Stop Control - Suzuki GSR600 Service Manual

COMPENSATION OF INJECTION TIME (VOLUME)

The following different signals are output from the respective sensors for compensation of the fuel injection
time (volume).
SIGNAL
ATMOSPHERIC PRESSURE SENSOR
SIGNAL
ENGINE COOLANT TEMPERATURE SEN-
SOR SIGNAL
INTAKE AIR TEMPERATURE SENSOR
SIGNAL
HEATED OXYGEN SENSOR SIGNAL
BATTERY VOLTAGE SIGNAL
ENGINE RPM SIGNAL
STARTING SIGNAL
ACCELERATION SIGNAL/
DECELERATION SIGNAL

INJECTION STOP CONTROL

SIGNAL
TIP-OVER SENSOR SIGNAL
(FUEL SHUT-OFF)
OVER-REV. LIMITER SIGNAL
DESCRIPTION
When atmospheric pressure is low, the sensor sends the
signal to the ECM and reduce the injection time (volume).
When engine coolant temperature is low, injection time (vol-
ume) is increased.
When intake air temperature is low, injection time (volume)
is increased.
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.
ECM operates on the battery voltage and at the same time,
it monitors the voltage signal for compensation of the fuel
injection time (volume). A longer injection time is needed to
adjust injection volume in the case of low voltage.
At high speed, the injection time (volume) is increased.
When starting engine, additional fuel is injected during
cranking engine.
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.
DESCRIPTION
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 pump, fuel injectors and ignition coils.
The fuel injectors stop operation when engine rpm reaches
rev. limit rpm.
FI SYSTEM DIAGNOSIS 4-11