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BOSCH氧传感器LSU4.9

氧传感器

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博世LSU4.9氧传感器英文详细说明书， The wide band lambda sensor LSU is a planar ZrO2 dual cell limiting current sensor with an integrated heater. It is used to measure the oxygen content and the λ-value of exhaust gases in automotive engines (gasoline and diesel). Its monotonic output signal in the range of λ=0.65 to air makes the LSU capable of being used as an universal sensor for λ=1 measurement as well as for other λ ranges. The connector module contains a trimming resistor, which defines the characteristics of the sensor and is necessary for the sensor function. The wide band sensor LSU operates only in combination with a special LSU control unit (e.g. AWS control box, LA4 or CJ125 IC).

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Technical Product Information

Y 258 E00 015e

Seite/Page 1 von/of 13

Datum/Date 14.6.2005

©Alle Rechte bei Robert Bosch GmbH, auch für den Fall von Schutzrechtsanmeldungen. Jede Verfügungsbefugnis, wie Kopier- und Weitergaberecht, bei uns.

©Robert Bosch GmbH reserves all rights even in the event of industrial property.We reserve all rights of disposal such as copying and passing on to third parties

Produkt / Product:

Planar Wide Band Lambda Sensor

Typ / Type:

LSU4.9

Bemerkung / Comment:

All data given in this document are nominal values

and might be subject of change at all time.

Nr.

Index

Seite

Page

Änderung

Revision

Datum

Date

GS-EX/ENG6-

Ham

GS-EX/ENG6 GS-EX/ENG

1 -

Erstausgabe / First Edition

14.6.05

gez Hamann gez Meier gez.

Stanglmeier

translation to English 26.8.05

Contents

Characteristics 2

2. Application conditions 5

3. Functional values 7

4. Installation instructions 9

5. General operating instructions 12

Technical Product Information

Y 258 E00 015e

Seite/Page 2 von/of 13

Datum/Date 14.6.2005

©Alle Rechte bei Robert Bosch GmbH, auch für den Fall von Schutzrechtsanmeldungen. Jede Verfügungsbefugnis, wie Kopier- und Weitergaberecht, bei uns.

©Robert Bosch GmbH reserves all rights even in the event of industrial property.We reserve all rights of disposal such as copying and passing on to third parties

General

The wide band lambda sensor LSU is a planar ZrO

dual cell limiting current

sensor with an integrated heater. It is used to measure the oxygen content

and the λ-value of exhaust gases in automotive engines (gasoline and die-

sel). Its monotonic output signal in the range of λ=0.65 to air makes the

LSU capable of being used as an universal sensor for λ=1 measurement as

well as for other λ ranges.

The connector module contains a trimming resistor, which defines the

characteristics of the sensor and is necessary for the sensor function.

The wide band sensor LSU operates only in combination with a special

LSU control unit (e.g. AWS control box, LA4 or CJ125 IC).

1. Characteristics

1.1 Circuit of LSU and control unit

1.2 Electrical connection:

Pin1: Pumping Current APE red

Pin2: Virtual Ground IPN yellow

Pin3: Heater Minus H- white

Pin4: Heater Vbatt H+ grey

Pin5: Trim Current RT green

Pin6: Nernst Voltage RE+ black

, CO, HC, H

−

Measuring

Resistance

61.9 Ohm

Trimming Resistor

30-300 Ohm

Reference

Voltage

450 mV

←

-control

−

←

meas

red

green

yellow

white

black

grey

APE

VM=2,5V

−

IPN

−

20 µA

Reference Pump Current

Sensor Cell

AWS

Technical Product Information

Y 258 E00 015e

Seite/Page 3 von/of 13

Datum/Date 14.6.2005

©Alle Rechte bei Robert Bosch GmbH, auch für den Fall von Schutzrechtsanmeldungen. Jede Verfügungsbefugnis, wie Kopier- und Weitergaberecht, bei uns.

1.3 Sensor element

The heater supply voltage must be controlled, so that the temperature of

the sensor is kept at the operation point. The temperature is measured by

measuring the internal resistance of the sensor’s Nernst cell R

i,N

Nominal internal resistance of λ=1 Nernst cell R

i,N

for new sensors (operating and calibration point)

(measured with AC f = 1...4 kHz) 300 Ω

Max. current load of λ=1 Nernst cell

Continuous AC (f = 1...4 kHz) ≤ 250 µA

for R

I,N

measurement

Recommended value for reference pumping current

continuous = 20 µA

Max. pumping current into pump cell (I

)

- for rich gas signal (λ≥0,65) ≥ -9 mA

- for lean gas signal (air) ≤ 6 mA

1.4 Isolation resistance

(all values for new sensors in static air, heater off)

- between housing and each heater- and

sensor circuit connector pin at room

temperature ≥ 30 MΩ

- between sensor signal circuit and heater

circuit at 600°C hexagon temperature ≥ 1 MΩ

- between sensor signal pin APE and housing

at 600°C hexagon temperature: ≥ 100 kΩ

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2018-11-16

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