Lambda Sensor LSU 4.
9
This sensor is designed to measure the
oxygen content and Lambda value of
exhaust
gases
in
automotive
engines
(gasoline or Diesel).
The wide band lambda sensor LSU 4.9 is a
planar ZrO2 dual cell limiting current
sensor
with
integrated
heater.
Its
monotonic output signal in the range of
= 0.65 to air makes the LSU capable of
being used as an universal sensor for = 1
measurement as well as for other
ranges. The connector module contains a
trimming
resistor,
which
defines
the
characteristic of the sensor. The LSU
operates only in combination with a
special
LSU-IC,
used
in
most
Bosch
Motorsport ECUs and Lambda control
units like LT4.
The main benefit of the LSU is the robust
design combined with the high Bosch
production quality standard.
Application
Application
Fuel
Mechanical Data
0.65
Weight w/o wire
120 g
gasoline/Diesel
Length
84 mm
Bio fuel compatibility
E85
Thread
M18x1.5
Exhaust gas pressure
< 4 bar
Exhaust gas temperature range
(operating)
< 930 C
Exhaust gas temperature range
(max.)
< 1,030 C
Tightening torque
22 mm
40 60 Nm
Electrical Data
Hexagon temperature
< 600 C
Cable and protective sleeve
temperature
< 250 C
Connector temperature
< 140 C
Storage temperature range
-40 100 C
Max. vibration
(stochastic peak level)
< 1,000 m/s2
05 Feb. 10
Wrench size
Power supply H+ nominal
System supply voltage
Heater power steady state
Heater control frequency
7.5 V
10.8 V ... 16.5 V
7.5 W
100 Hz
Nominal resistance of Nernst cell
300
Max Current load for Nernst cell
250 A
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Connectors and Wires
Connector
Mating connector
Characteristic
[1] 1 928 404 687
[2] AS 6-07-35PN
[1] D 261 205 356-01
[2] AS 0-07-35SN
Pin 1
IP / APE
Pin 2
VM / IPN
Pin 3
Uh- / H-
Pin 4
Uh+ / H
Pin 5
IA / RT
Pin 6
UN / RE
Sleeve
fiber glas / silicone coated
Wire size
AWG 24
Wire length L
32.5 cm
Various motorsport and automotive connectors are
available on request.
Please specify the required wire length with your
order.
Application Hint
The LSU 4.9 can be connected to most Bosch
Motorsport ECUs and lambda control units like LT4.
The lambda sensor should be installed at point
which permits the measurement of a representative
exhaust-gas mixture, which does not exceed the
maximum permissible temperature.
Install at a point where the gas is as hot as
possible.
Observe the maximum permissible temperature.
As far as possible install the sensor vertically (wire
upwards).
Signal output
Ip meas / Ua (AWS)
Accuracy @ = 1.016
1.016 0.007
Accuracy @ = 0.8
0.80 0.01
Accuracy @ = 1.7
1.70 0.05
IP
UA [V]
Lambda []
-1.243
0.192
0.750
-0.927
0.525
0.800
-0.800
0.658
0.822
-0.652
0.814
0.850
-0.405
1.074
0.900
-0.183
1.307
0.950
-0.106
1.388
0.970
-0.040
1.458
0.990
1.500
1.003
0.015
1.515
1.010
0.097
1.602
1.050
0.193
1.703
1.100
0.250
1.763
1.132
0.329
1.846
1.179
0.671
2.206
1.429
0.938
2.487
1.701
1.150
2.710
1.990
1.385
2.958
2.434
1.700
3.289
3.413
2.000
3.605
5.391
2.150
3.762
7.506
2.250
3.868
10.119
The sensor is not to be fitted near to the exhaust
pipe outlet, so that the influence of the outside air
can be ruled out.
Part Number
LSU 4.9
[1] 0 258 017 025
The exhaust-gas passage opposite the sensor must
be free of leaks in order to avoid the effects of leakair.
LSU 4.9
[2] B 261 209 358-02
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Protect the sensor against condensation water.
The sensor is not to be painted, nor is wax to be
applied or any other forms of treatment. Use only
the recommended grease for lubricating the thread.
Please find further application hints in the offer
drawing (http://www.bosch-motorsport.com).
05 Feb. 10
