Triumph 2010 Tiger 800, Руководство по обслуживанию

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Fuel System/Engine Management
System Actuators
In response to signals received from the sensors, the ECM
controls and directs messages to a series of electronic and
electro-mechanical actuators. The function and location of
the actuators is given below.
Throttle stepper motor - situated between
the throttle bodies of cylinders two and three.
The throttle stepper actuates a cam/lever
which causes variations in the closed throttle
position. Although used primarily to ensure
target idle speed is maintained, it also
increases throttle opening when the engine is
cold.
•
Canister purge valve <California models
only> - situated in the vapour return line
between the carbon canister and the throttle
bodies. The purge valve controls the return of
vapour which has been stored in the carbon
canister during the period when the engine is
switched off. The valve is 'pulsed' by the ECM
to give control over the rate at which the
canister is purged.
•
Injectors - located on the throttle body. The
engine is fitted with three injectors. The spray
pattern of the injectors is fixed but the length
of time each injector can remain open is
variable according to operating conditions.
The duration of each injection is calculated by
the ECM using data received from the
various sensors in the system.
•
Ignition coils - plug-top coils are located in
the cam cover. There are three coils fitted,
one for each spark plug. The ECM controls
the point at which the coils are switched on
and off. In calculating the switch-on time, the
ECM allows sufficient time for the coils to
charge to a level where a spark can be
produced. The coils are switched off at the
point of ignition, the timing of which is
optimised for good engine performance.
EMS main relay - situated behind the
battery. When the ignition is switched on, the
EMS main relay is powered up to provide a
stable voltage supply for the ECM. When the
ignition is turned off, the ECM carries out a
power down sequence during which the EMS
main relay remains powered by the ECM for
1 minute. The ECM power down sequence
includes: writing the adaption data to ECM
memory and referencing the position of the
throttle stepper motor.
•
Fuel pump - located inside the fuel tank. The
electric pump delivers fuel into the fuel
system, via a pressure regulator, at a constant
3 bar pressure. The pump is run continuously
Note:
when the engine is operating and is also run
briefly when the ignition is first switched on
to ensure that 3 bar is available to the system
as soon as the engine is cranked. Fuel
pressure is controlled by a regulator also
situated inside the fuel tank.
Cooling fan - located behind the radiator.
The ECM controls switching on and off of the
cooling fan in response to a signal received
from the coolant temperature sensor. When
the coolant temperature rises to a level where
the cooling effect of natural airflow is
insufficient, the cooling fan is turned on by
the ECM. When the coolant temperature falls
sufficiently, the ECM turns the cooling fan off.
The fan only becomes operational when the
engine is running. lt will not operate at any
other time.
•
In this system, the starter lockout system
(clutch
switch, gear position sensor,
sidestand switch> all operate through the
engine management ECM.
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SeiVice Manual
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Tiger 800 and Tiger 800XC
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