Self-Study Programme 189 2.3L petrol engine in the LT '97.pdf

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Service
189
The 2.3 l petrol engine
in the LT ‘97
Design and Function
Self Study Programme
Customer Service
A commercial vehicle with a petrol engine?
...is not impossible.
Volkswagen Commercial Vehicles is featuring
a 2.3 l petrol engine in its LT '97 range as a
high performance option.
Find out more about it in this self study
programme!
2
Page
Overview ........................................................................................ 4
Engine - mechanical ...................................................................... 6
Oil circuit ........................................................................................ 8
Cooling system .............................................................................. 10
Fuel supply ..................................................................................... 11
Self check ....................................................................................... 13
Injection and ignition system....................................................... 14
System overview........................................................................... 16
Ignition system .............................................................................. 18
Injection system ............................................................................ 28
Idling control.................................................................................. 32
Exhaust cleaning ........................................................................... 35
Functional diagram ....................................................................... 38
Self diagnosis................................................................................. 41
Self check ....................................................................................... 45
New
Note!
The Self Study Programme is not a repair
manual!
For information on testing, adjustments and
repairs refer to the appropriate customer
service literature.
3
Overview
The new 2.3 l petrol engine
has been specially developed for commercial
vehicles. It delivers high level torque over a
wide range of revs.
189-01
The engine has a cross flow cylinder head with
four valve technology. This makes for good
fuel mixing and therefore low emission
combustion.
189-61
4
The torque and performance diagram
shows a maximum torque value of 210 Nm.
The torque value is over 180 Nm in an engine
speed range of 1500 to 5500 1/min. The engine
delivers its maximum output of 105 KW at
5500 1/min.
This permits constant and strong tractive
power even with heavy loads. Throughout the
entire engine speed range it is possible to
drive economically yet with powerful
acceleration and few gear changes.
110
100
90
80
70
60
50
105KW
210Nm
40
30
20
10
0
0
220
200
180
160
140
120
100
1000 2000 3000 4000 5000 6000 7000
189-76
Data
Engine abbreviation
Cylinders
Capacity
Bore
Stroke
Compression
Power
Maximum torque
Engine management
AGL
R4
2295 cm
3
90.9 mm
88.4 mm
8.8 : 1
105 kW/ 143 HP
at 5500 1/min
210 Nm at 4000 1/min
Siemens Motronic
5

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