Dealer Development Center, Pune
58
Pulsar DTS-i 150/180 Training Notes
DTS-i Ignition & DC Ignition System
1.
The most obvious feature is the Twin Spark Plug
configuration of the Engine. The cylinder head has 2 spark
plugs one on either side. The spark plugs are of the same
Heat range (Champion RG4HC (Resistive) and have similar
electrode gaps. These also spark simultaneously, This has
been done to improve the combustion process by reducing
the time of combustion. The end results are low emissions,
good fuel economy and good drive ability
2.
To enable the sparking of the 2 spark plugs, a intelligent
CDI capable of handling this was developed. Further more,
the ignition timing has been optimised to give the best
0
0
output from engine (10 BTDC @ 1400 rpm, 25 BTDC @
3000 rpm). To enable optimum ignition timing for part
throttle loads and full throttle loads, there are separate
ignition maps stored in the memory of the CDI. These are
activated depending on the throttle opening and engine
speed. The Digital CDI has a bit Microprocessor which
handles all these inputs and gives out the required and
correct spark advance.
3.
To enable switching the required ignition maps, a
magnetically operated need switch is incorporated on the
carburettor throttle shaft and carburettor body. This is
known as TRICS. Throttle Responsive Ignition Control
System.
4.
This engine has been extensively tuned for more Power
and Torque.
5.
The DTSi technology has enabled the Pulsar to meet 2009
norms without any Secondary air injection devices.
-
DC Ignition System works on DC electrical energy given by
battery. The vehicle battery is always kept charged by the
magneto through DC voltage regulator which is incorporated in
the R.R. unit. Hence the role of the battery is very important
and you can not disconnect the battery from the vehicle.
Disconnection of the battery will disable the starting of the
vehicle.
Advantage
•
Constant & Consistent high intensity current is available
even at low engine RPM which gives improved combustion
and better startability.
•
No head light voltage fluctuations even at lower rpm
resulting into safe night ride.
DTS-i (Digital Twin Spark Ignition) Ignition System
DC Ignition System
Dealer Development Center, Pune
59
Pulsar DTS-i 150/180 Training Notes
Maintenance - Electrical
Battery
Technical Specification :
• Type & Capacity
12V - 9 AH
0
• Specific gravity of electrolyte
1.24 for use above 10 C
for initial filling of new battery
0
• Specific gravity of electrolyte
1.28 for use below 10 C
for initial filling of new battery
• Initial charging duration
10 ~ 15 hrs
• Initial charging current
0.9 to 1 Amp
Initial Charging Procedure
1. Fill each cell with battery grade sulfuric acid of
the correct Sp. gravity (1.24 at room temp. for
0
use above 10 C and 1.28 at room temp. for
0
use below10 C).
2. Allow the battery to stand for 30 min. after
filling.
3. Keep vent plugs open. Connect battery to
charger and charge at 0.9 Amp.
4. Charge continuously for 10~15 hours taking
Sp. gravity readings every hour. Fully charged
condition is indicated when all cells are
gassing freely and evenly and show no rise in
specific gravity over 3 successive readings.
5. After charging push vent plugs strip firmly into
place and wash off acid spillage with water
and dry the battery.
6. Using the battery load tester confirm for good
indication of state of charge of battery.
Checking the Specific Gravity
The charge condition of the individual cell can be
checked by measuring Sp. gravity of electrolyte in
that cell. The specific gravity of electrolyte can be
checked by using Hydrometer having small
diameter spout.
For measuring the Sp. gravity bring the electrolyte
in the Hydrometer to eye level, and read the
graduations on the float scale bordering on the
lower meniscus (i.e. curved down portion of
electrolyte surface) as shown in the figure. After
charging is over, fit the filling caps strip, wash acid
spillage with water. Dry the battery. Ensure
terminals are clean.
Battery Installation:
Install the battery on vehicle as described below
a. Ensure that in all six cells the level of
electrolyte is near the maximum level mark.
b. To clean and dry the surface wipe the top of
the battery with a clean cloth. Install the
battery inside the box provided on floor board.
Fasten the battery firmly with bracket & allied
fasteners.
c. Connect cables to the positive and negative
terminals properly. Reverse connections will
damage the charging system permanently.
d. Always connect “negative (earthling) terminal”
at Iast.
e. Clean battery terminals and cable connections.
Smear them with petroleum jelly to avoid
corrosion.
g. Check that the battery cable connections are
firm and cables do not rub against any metal
components.
Battery Charging Procedure :
This is a M.F (Maintenance Free) battery. This
battery is not having any exhaust tube instead it
has a unique vent mechanism.
The electrolyte level in this M.F. battery needs to
be topped up with distilled water not exceeding
the max level if found that the electrolyte level is
below min level / dropped down. In case battery
in discharged and needs to be charged using
battery changed procedure is as follows :
•
Remove battery from vehicle
•
Clean battery throughly
•
Remove gang bar strip.
Read
Here
Hydrometer
