Engine Management System Information
No Motobike Manufactor have had involvement in this product.
The use of a manufactures name and / or model designation to describe the
motorcycles on this site does not imply that the manufacturer endorses
the use of this application.
System
Description
(675)
Goto Speed
Triple T509 (885 cc) & 955cc Goto Speed Triple 955i model 2002 - 2004
Goto
Speed Triple 1050
Goto Rocket
III
The Daytona 675 is fitted with an electronic
engine management system which encompasses control of both ignition and
fuel delivery. The electronic control module (ECM) draws information
from sensors positioned around the engine, cooling and air intake
systems and precisely calculates ignition advance and fueling
requirements for all engine speeds and loads.
In addition, the system has an on-board diagnostic function. This ensures that, should a malfunction occur in the engine management system, the malfunction type, and engine data at the time the malfunction occurred, are stored in the ECM memory. This stored data can then be recovered using a special service tool which is mandatory for all Triumph dealers. In this way, precise diagnosis of a fault can be made and the fault quickly rectified.
System Sensors
Intake air
temperature sensor
Situated
in the top of the airbox. As the
density of the air (and therefore the amount of oxygen available to
ignite the fuel) changes with temperature, an intake air temperature
sensor is fitted. Changes in air temperature (and therefore air
density) are compensated for by adjusting the amount of fuel injected
to a level consistent with clean combustion and low emissions.
Barometric
pressure sensor
Situated behind the cockpit and below the instrument
pack. The barometric pressure sensor measures atmospheric air pressure.
With this information, the amount of fuel injected is adjusted to suit
the prevailing conditions.
Manifold
Absolute Pressure (MAP) sensor
Situated to the left side of the airbox, connected to
each of the three throttle bodies by equal length tubes. The MAP sensor
provides information to the ECM which is used at shallow throttle
angles (very small throttle openings) to provide accurate engine load
indications to the ECM. This degree of engine load accuracy allows the
ECM to make very small adjustments to fuel and ignition which would
otherwise not be possible from throttle angle data alone.
Clutch
switch
Situated on the clutch lever. The clutch must be pulled
in for the starter motor
to operate.
Crankshaft
position sensor
Situated in the alternator cover. The crankshaft
position sensor detects movement of teeth attached to the alternator
rotor. The toothed rotor gives a reference point from which the actual
crankshaft position is calculated. The crankshaft position sensor
information is used by the ECM to determine engine speed and crankshaft
position in relation to the point where fuel is injected and ignition
of the fuel occurs.
Engine
coolant temperature sensor
Situated
at the rear of the cylinder head.
Coolant temperature information, received by the ECM, is used to
optimise fueling at all engine temperatures and to calculate hot and
cold start fueling requirements.
Throttle
position sensor
Situated at right end of the throttle body. Used to relay
throttle position information to the ECM. Throttle opening angle is used by the ECM to
determine fueling and ignition requirements for all throttle positions.
Road
speed sensor
Situated
in the upper crankcase, in front of
the engine breather. The road speed sensor provides the ECM with data
from which road speed is calculated and displayed on the speedometer.
Lambda
sensor
Situated
in the exhaust header system
upstream of the catalyst. The lambda sensor constantly feeds
information to the ECM on the content of the exhaust gases. Based on
this information, adjustments to the air/fuel ratio are made.
Side
stand switch
Situated
at the top of the sidestand leg. If
the sidestand is in the down position, the engine will not run unless
the transmission is in neutral.
Gear
position sensor
Situated
in the upper crankcase, behind the
gearbox output sprocket cover, on the left hand side of the engine. The
gear position sensor provides the ECM with selected gear information.
This is used to prevent the engine from starting if the transmission is
in gear. The sensor also provides information to the gear position
indicator and the neutral lamp in the instruments.
Fall
detection switch
Situated
below the instrument pack. The fall
detection switch will detect if the motorcycle is on its side and will
cut power to the ECM immediately. This prevents the engine from running
and the fuel pump from delivering fuel. In the event of a fall, the
switch is reset by returning the bike to an upright position and
switching the ignition off then back on again.
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 cylinders two and three of
the throttle bodies. 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 lire 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
forward of the fuse box. 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 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.
It will not operate at any other time.
Secondary
air injection solenoid
Located forward of the airbox, on the left hand
side of the air intake. The secondary air injection solenoid controls
airflow through the secondary air injection system.
Intake
air flap
Located in the air intake, between the
headlamps. The purpose of the intake air flap is to improve low down
power delivery. The intake air flap is closed up to 4500 rpm and 12
degrees of throttle, above which it opens.
Exhaust
butterfly valve
Located in the exhaust headers downstream of
the Lambda sensor. The purpose of the exhaust valve is to improve low
down power delivery. At idle, the exhaust valve is 30% open, rising to
approximately 50°/a open at 4500 rpm, and fully open at 7000 rpm and
above. The profile that the exhaust valve follows has been designed to
give no reduction of torque at full throttle.
Note:
In
this system, the starter
lockout system
(clutch switch, gear
position sensor, sidestand switch) all operate through the engine
management ECM.
!!
Important note !!
No Motobike Manufactor have had involvement in this
product.
The use of a manufactures name and / or model
designation to describe the
motorcycles on this site does not imply that the manufacturer endorses
the use of this application.