AWS2 Signal Conditioning Unit. User s Guide

Transcription

1 AWS2 Signal Conditioning Unit User s Guide

2 Copyright The data in this document may not be altered or amended without special notification from ETAS GmbH. ETAS GmbH undertakes no further obligation in relation to this document. The software described in it can only be used if the customer is in possession of a general license agreement or single license. Using and copying is only allowed in concurrence with the specifications stipulated in the contract. Under no circumstances may any part of this document be copied, reproduced, transmitted, stored in a retrieval system or translated into another language without the express written permission of ETAS GmbH. Copyright 2007 ETAS GmbH, Stuttgart The names and designations used in this document are trademarks or brands belonging to the respective owners. Document AM R1.3.2 EN TTN F 00K AWS2 Signal Conditioning Unit

3 Contents 1 Introduction About This Manual Contents Typographical Conventions Startup Installing the LSU Lambda Sensor Starting Up the AWS2 Signal Conditioning Unit Setting the Heater Control Setting the Sensor Internal Resistance Connecting the Lambda Sensor Working with AWS Lambda Measurements The Pump Current Ip Measuring the Sensor Temperature The Sensor Internal Resistance Ri Appendix Technical Data AWS Contents 3

4 4.1.2 Sensor Connection Output Signals Sensor Cable Cable Jack Sensor Side Pin Assignment Sensor Cable Lambda Curves of the LSU Model Ranges LSU 4.2, 80 Ω LSU 4.x, 100 Ω LSU 4.9, 300 Ω Ordering Descriptions and Accessories AWS Sensor Cable Other Accessories ETAS Contact Addresses Contents

5 1 Introduction The AWS2 signal conditioning unit is used in conjunction with the Robert Bosch LSU broadband lambda sensor to evaluate the sensor signal. The AWS2 signal conditioning unit can be used for the following as an inexpensive alternative to the precision measuring instrument LA4: evaluating the LSU sensor signal in engine ECUs continuous measurements to determine sensor accuracy map optimization. The LSU sensor is fitted in the exhaust system as a measuring sensor (possibly in addition to a lambda sensor which has already been installed). The signal conditioning unit AWS2 is used to determine the pump current of the sensor and the current sensor internal resistance. The signal conditioning unit can be operated with various model ranges of the LSU lambda sensor; different sensor internal resistances must be set on the unit for this purpose. The unit is also designed to facilitate upgrading to ensure that it can be used with all future model ranges. 1.1 About This Manual Contents This manual is divided into two parts. The first part contains installation guidelines for the LSU lambda sensor and instructions on how to start up the AWS2 signal conditioning unit. The second part explains how to use the AWS2 in the various application areas. The technical data of the AWS2 is listed in the reference section at the end of this User s Guide. Introduction 5

6 1.1.2 Typographical Conventions The following typographical conventions are used in this manual: Inscriptions on the measuring instrument are printed bold. Example: Connect the AWS2 EN terminal to the "Engine on" signal of the ECU. All content highlights, foreign terms and new terms introduced in the text are represented in italics. Example: Connect the AWS2 GND terminal to the electronic ground of the ECU. 6 Introduction

7 2 Startup This section explains how to install the LSU lambda sensor, start up the AWS2 and describes the relevant settings for the sensor heater. Please note that improper handling can lead to the lambda sensor and the AWS2 being damaged. 2.1 Installing the LSU Lambda Sensor You can obtain the LSU lambda sensor from Robert Bosch GmbH or order it directly from ETAS GmbH. Please observe the following general guidelines when installing the lambda sensor: Select the point of installation in exhaust gas pipes at a point where the exhaust gas composition is representative and remains within the prescribed temperature limits. The following maximum values apply for the LSU 4.2 you can obtain from ETAS: max. gas temperature: 980 C max. temperature at the hexagon head: 630 C Cold exhaust gas at a high flow velocity may exceed the operating temperature of the sensor cell, depending on the operating voltage. This may lead to measurement errors. Hot exhaust gas at temperatures above the controlled ceramic temperature may cause the operating temperature of the sensor cell to rise. This may lead to measurement errors. The active sensor ceramic is heated up quickly by the internal heater. When defining the point of installation, make sure that the amount of condensate penetrating from the exhaust gas system is minimal in order to avoid ceramic breakages. The sensor should be installed at a position which fulfils the following conditions: Define a point for installing the sensor as close to the engine as possible. Ensure a minimum distance of 15 cm from the combustion chamber. Strive to achieve a rapid warm-up of the exhaust pipe just upstream of the sensor installation point. Startup 7

8 The exhaust pipe should be on a downward stretch to avoid the accumulation of condensate upstream of the sensor installation point (no recesses, projections or cutting edges, etc.). The angle of installation should be inclined at least 10 to the horizontal (sensor tip pointing down). This prevents condensate or fuel from accumulating between the sensor housing and the sensor ceramic during the cold-start phase. Installation using special grease on screw thread (e.g. Bosch No for the 120 g tin). Tightening torque: Nm, the material and the thread must have sufficient properties and strength. Avoid excessive heating of the sensor cable gland, in particular when the engine is switched off. Do not use any cleaning or greasy liquids or vaporizing substances on the sensor connection. 8 Startup

9 How to install the LSU lambda sensor Select a position on the exhaust pipe for the lambda sensor at least 15 cm from the combustion chamber. Otherwise, the sensor will suffer heat damage. Before installing the sensor, weld a threaded boss in the exhaust manifold. When you install the LSU lambda sensor, pay attention to the use of ultra-high heatresistant lubricant (cf. page 8). Spread it round the threaded boss of the LSU sensor before you screw the sensor in. This will avoid difficulties when you remove the sensor later. The tip of the LSU lambda sensor should project at least half way into the exhaust pipe to obtain accurate mixture measurements. The LSU lambda sensor is heated via the AWS2 and must always be connected to the AWS2 when it is exposed to engine exhaust gases. Startup 9

10 2.2 Starting Up the AWS2 Signal Conditioning Unit This section describes how to start up the AWS2 signal conditioning unit. It tells you how to connect the unit and which settings you have to adjust before you can switch it on. Starting up takes place in three steps which are all described in detail below: setting the heater control setting the sensor internal resistance connecting the lambda sensor Setting the Heater Control The AWS2 controls the heater by default; the heater release on the front of the unit is bridged (EN and GND connected to each other). This setting can be kept for cold-start measurements and for cases where no suitable ECU is available. If you are using the AWS2 on board and a corresponding engine ECU is installed, connect the heater control to the ECU. This means you are linking the temperature of the sensor to the temperature of the exhaust gas flow, and thus minimizing the risk of damaging the sensor. To connect the heater control to the engine ECU, you need details of the ECU pin assignment, which you can find out if necessary from the manufacturer. Connecting the heater control Remove the shoprting bar that connects the EN and GND terminals on the front of the unit. Connect the AWS2 GND terminal to the electronic ground of the ECU. Always use the electronic ground to prevent the heater control from being damaged due to ground offset. 10 Startup

11 Connect the AWS2 EN terminal to the "Engine on" signal of the ECU. The sensor is heated as soon as the engine is switched on. The yellow LED indicates that the sensor is being heated Setting the Sensor Internal Resistance The AWS2 signal conditioning unit can be operated with various model ranges of the LSU lambda sensor. There is a characteristic sensor internal resistance for every model range. Make sure that the unit is set correctly before you connect the sensor to the AWS2. If you are not sure which model range your sensor belongs to, ask the manufacturer about the internal resistance. Please refer to the following table for information on the sensor internal resistance (R i ) and the ordering description of the most common model ranges. Model Range Ordering Description R i LSU Ω LSU (other) 80 Ω LSU Ω LSU Ω Tab. 2-1 Internal Resistance of the Common LSU Model Ranges Startup 11

12 Setting the sensor internal resistances Ri-Selector NC Use the table Tab. 2-1 to determine the nominal internal resistance of your lambda sensor. If you are in any doubt, contact the manufacturer for the precise value. Use the rotary switch on the back of the unit to set the appropriate value Connecting the Lambda Sensor The last step is to connect the lambda sensor to the AWS2 using the cable supplied and activate the power supply. The AWS2 is operated with 12 V DC which is required for signal evaluation and the heater control. Connecting the lambda sensor Connect the cable supplied to the 26-pin socket on the back of the AWS2. Connect the general-purpose connector on the sensor cable to the corresponding jack on the cable. Do not use any cleaning or greasy liquids on the sensor cable connection. 12 Startup

13 Connect the power supply for the AWS2 to the relevant voltage source (12 V DC). The green LED on the front of the signal conditioning unit indicates that the measuring instrument is ready for operation. Startup 13

14 14 Startup

15 3 Working with AWS2 The terminals for the output signals of the AWS2 are on the front of the instrument and are shown with the names of the output signal: VIp lambda sensor pump current VRi lambda sensor internal resistance You can use the sensor pump current to determine the lambda value with the help of a suitable curve: the sensor internal resistance is the basis for calculating the current sensor temperature. A voltage is available at the two outputs of the AWS2 which linearly depends on the relevant measurement, i.e. the sensor pump current or its internal resistance. The values for the output voltage can be read using a simple measuring instrument or oscilloscope. If you are using an ECU in which suitable inputs are defined, you can connect these directly to the output signals of the AWS2. The following sections describe how you execute simple measurements with the AWS2 and evaluate the output signals of the AWS2. Please refer to page 24 in the Appendix of this manual for an overview of the lambda curves for the common model ranges. 3.1 Lambda Measurements Lambda measurements can be executed as continuous measurements to check the accuracy of the sensor or as measurements in the vehicle. In both cases, the AWS2 output signal V Ip is used to determine the sensor pump current. An ECU is not normally used for continuous measurements; the heater release on the AWS2 has to be bridged. When lambda is measured in the vehicle, the heater release should be connected to a suitable engine ECU (cf. the section "Setting the Heater Control" on page 10). A suitable curve must be available on the ECU if you want to use the output signal of the AWS2 there. The output signal is allocated to the lambda air/fuel ratio in the ECU. The evaluation of the pump current signal VIp is described in the next section The Pump Current Ip The pump current I p of the LSU lambda sensor is the basis for determining the lambda value in the exhaust gas flow. The lambda value is calculated in two steps: Working with AWS2 15

16 first of all, the sensor pump current I p is derived from the output signal V Ip you then use the suitable curve for your sensor to determine the lambda value. The following formula shows the relation between the output signal VIp and the pump current I p. V Ip = 1648, V ma Ip + 25V, This results, for example, in a pump current I p of about 1.0 ma for the value V Ip =4.15V. For further interpretation of the measurement, use a curve suitable for the sensor used to determine the lambda value which corresponds to the pump current I p. Fig. 3-1 shows the relationship between the pump current I p and the lambda air/fuel ratio (here using the example of the LSU 4.2 model range which can be obtained from ETAS at 100 Ω). Fig. 3-1 Lambda Curve for the LSU 4.2 Model Range at 100 Ω When using the LSU 4.2 model range at 100 Ω, the calculated pump current I p = 1 ma corresponds to a lambda value of about 1.7. The exhaust gas is lean. For ideal combustion (lambda value = 1), the pump current has to be I p which approximately corresponds to an output voltage V Ip of 2.5 V. The lambda curves for the common model ranges are listed in the Appendix to this User s Guide on page 24. The diskette supplied also contains the curves in CSV file format. 16 Working with AWS2

17 3.2 Measuring the Sensor Temperature In addition to determining the lambda value, you can also determine the current internal resistance of the sensor both in continuous measurements and measurements in the vehicle to monitor the measuring accuracy. You use the V Ri output of the AWS2 (whose signal you can read using a suitable measuring instrument) to determine the sensor internal resistance. The evaluation of the output signal V Ri is described in the following section The Sensor Internal Resistance Ri The sensor internal resistance R i makes it possible to determine the current sensor temperature. The sensor only returns reliable results if it has attained a suitable operating temperature. This is why you still you have to preheat the sensor (for about 20 seconds) when executing, for example, cold-start measurements. The relation between the output signal of the AWS2 V Ri and the internal resistance of the sensor depends directly on the model range used. The following formula describes the general relation. V Ri = 2, 5V α R i The basis for the allocation of the values is the nominal sensor internal resistance R i nom. You determine the relevant slope α for the equation above in accordance with the internal resistance from the following table. Model Range Ordering Description R i nom. Slope α LSU Ω 3,29 mv / Ω LSU (other) 80 Ω 2,63 mv / Ω LSU Ω 2,63 mv / Ω LSU Ω 0,877 mv / Ω This means that the following formula is valid for the LSU 4.2 model range with an internal resistance of 100 Ω. V Ri = 2, 5V 2, 63mV Ω R i Working with AWS2 17

18 A general rule for the interpretation of the output signal is: the higher the voltage V Ri, the higher the sensor temperature. You have to ascertain the curve for the sensors with which you determine the relation between internal resistance and sensor temperature yourself. 18 Working with AWS2

19 4 Appendix 4.1 Technical Data AWS2 Features Values Dimensions (H/W/D) 40 mm/ 80 mm/ 90 mm Operating voltage 10 V V Power consumption (without sensor) 50 ma Temperature range -40 C C Sensor Connection Features Supported sensor types Nernst voltage regulation Pump current supply Power supply of the heater Values 80 Ω, 100 Ω, 300 Ω 450 mv -3 ma ma 3.5 A Output Signals Features Pump current Ip Sensor internal resistance Ri Pumped reference (only LSU 4.9) Values 2500 mv + Ip / 1 ma 1648 mv 2500 mv - Ri / Ri nom. 263 mv μa Appendix 19

20 4.2 Sensor Cable Cable Jack Sensor Side Short Name Cable connector Cable jack AWS2 side Sensor side K113, CBL110-5 SUB-D26 Universal jack RB130fl K114, CBL111-5 SUB-D26 Jack RB130rd (Code1) CBL151-3, CBL151-5 SUB-D26 Jack RB150 (Code 1) CBL155-3, CBL155-5 SUB-D26 Jack RB150 (Code A) Pin Assignment Sensor Cable Connector SUB-D26 (all sensor cables) Abb. 4-1 Sensor cable AWS2 side (Connector side view) Pin Signal Meaning 1 H+ Heater U batt 2 U Batt + Power supply (plus) 3 U Batt + Power supply (plus) 4 5 RE+ Nernst voltage 6 IPN Virtual Ground 7 U Batt - Power supply (Ground) 8 H- Heater clock minus 9 H- Heater clock minus 10 H+ Heater U batt 11 H+ Heater U batt 12 U Batt + Power supply (plus) 20 Appendix

21 Pin Signal Meaning 13 U Batt + Power supply (plus) U Batt - Power supply (Ground) 17 U Batt - Power supply (Ground) 18 H- Heater clock minus 19 H+ Heater U batt RT Calibrating resistor 24 IP Pump current 25 U Batt - Power supply (Ground) 26 H- Heater clock minus Appendix 21

22 Jack LSU RB130fl (Cable K113, CBL110-5) rt ws gn IP H- RT IPN H+ RE+ ge gr sw Fig. 4-2 Jack LSU RB130fl (Jack side view) Pin Signal Meaning 1 RE+ Nernst voltage 2 RT Calibrating resistor 3 H+ Heater U batt 4 H- Heater clock minus 5 IPN Virtual Ground 6 IP Pump current 22 Appendix

23 Jack RB130rd (Cable K114, CBL111-5) Fig. 4-3 Jack RB130rd (Jack side view) Pin Signal Meaning 1 IP Pump current 2 IPN Virtual Ground 3 H- Heater clock minus 4 H+ Heater U batt 5 RT Calibrating resistor 6 RE+ Nernst voltage Jack RB150 (Cable CBL151, CBL155) Fig. 4-4 Jack RB150 (Jack side view) Pin Signal Meaning 1 IP Pump current 2 IPN Virtual Ground 3 H- Heater clock minus 4 H+ Heater U batt 5 RT Calibrating resistor 6 RE+ Nernst voltage Appendix 23

24 4.3 Lambda Curves of the LSU Model Ranges LSU 4.2, 80 Ω Different oxygen curves exist for the AWS2 for LSU model series 4.2. Please use the oxygen curve assigned to the hardware revision of your AWS2. Details of the hardware revision of your AWS2 are on the bottom of the AWS2 under the identification plate. LSU 4.2, 80 Ω (AWS2 Hardware Revisions C01x) This Lambda curve is to apply for AWS2 hardware revisions C01x. V Ip λ V Ip λ V Ip λ 0,1603 0,75 2,4816 1,01 5,2023 3,00 0,5226 0,78 2,4914 1,01 5,2967 3,20 0,7524 0,80 2,5010 1,01 5,4191 3,50 0,8609 0,81 2,5243 1,02 5,5230 3,80 0,9694 0,82 2,5468 1,02 5,6393 4,20 1,0748 0,83 2,5685 1,03 5,7360 4,60 1,1769 0,84 2,5895 1,03 5,8179 5,00 1,2711 0,85 2,6100 1,04 5,9041 5,50 1,3732 0,86 2,6299 1,04 5,9762 6,00 1,4674 0,87 2,6851 1,05 6,0904 7,00 1,5584 0,88 2,7046 1,06 6,1765 8,00 1,6477 0,89 2,7732 1,08 6, ,00 1,7371 0,90 2,8735 1,11 6, ,00 1,8169 0,91 3,0650 1,18 6, ,00 1,8981 0,92 3,2533 1,25 1,9765 0,93 3,4464 1,33 2,0520 0,94 3,6411 1,43 2,1249 0,95 3,8390 1,54 2,1952 0,96 4,1120 1,71 2,2655 0,97 4,2396 1,80 2,3276 0,98 4,4423 1,97 2,3899 0,99 4,6466 2,18 24 Appendix

25 V Ip λ V Ip λ V Ip λ 2,4515 1,00 4,8557 2,43 2,4617 1,00 4,9862 2,67 2,4718 1,00 5,0953 2,80 LSU 4.2, 80 Ω (AWS2 Hardware Revisions D01x and E01x) This Lambda curve is to apply for AWS2 hardware revisions D01x and E01x. V Ip λ V Ip λ V Ip λ -2,788 1) 0,550 2,201 0,960 4,405 1,972-2,611 1) 0,560 2,270 0,970 4,606 2,176-2,267 1) 0,580 2,331 0,980 4,811 2,425-1,934 1) 0,600 2,392 0,990 4,939 2,666-1,613 1) 0,620 2,452 1,000 5,046 2,800-1,303 1) 0,640 2,462 1,002 5,151 3,000-1,004 1) 0,660 2,472 1,004 5,243 3,200-0,717 1) 0,680 2,482 1,006 5,363 3,500-0,440 0,700 2,492 1,008 5,465 3,800 0,205 0,750 2,501 1,010 5,580 4,200 0,560 0,780 2,524 1,015 5,674 4,600 0,786 0,800 2,546 1,020 5,755 5,000 0,892 0,810 2,567 1,025 5,839 5,500 0,999 0,820 2,588 1,030 5,910 6,000 1,102 0,830 2,608 1,035 6,022 7,000 1,202 0,840 2,627 1,040 6,107 8,000 1,294 0,850 2,682 1,053 6,226 10,000 1,395 0,860 2,701 1,060 6,306 12,000 1,487 0,870 2,768 1,080 6,386 15,000 1,576 0,880 2,866 1,113 6,467 20,000 1,664 0,890 3,054 1,178 6,516 25,000 1,752 0,900 3,239 1,252 6,548 30,000 1,830 0,910 3,428 1,334 6,614 32,767 Appendix 25

26 V Ip λ V Ip λ V Ip λ 1,910 0,920 3,619 1,428 1,986 0,930 3,814 1,535 2,061 0,940 4,081 1,707 2,132 0,950 4,207 1,802 1) calculated values 26 Appendix

27 4.3.2 LSU 4.x, 100 Ω V Ip λ V Ip λ V Ip λ -3,066 1) 0,550 2,185 0,960 4,506 1,972-2,880 1) 0,560 2,258 0,970 4,717 2,176-2,518 1) 0,580 2,322 0,980 4,932 2,425-2,168 1) 0,600 2,386 0,990 5,067 2,666-1,829 1) 0,620 2,450 1,000 5,180 2,800-1,503 1) 0,640 2,460 1,002 5,290 3,000-1,189 1) 0,660 2,471 1,004 5,388 3,200-0,886 1) 0,680 2,481 1,006 5,514 3,500-0,595 0,700 2,491 1,008 5,621 3,800 0,084 0,750 2,501 1,010 5,742 4,200 0,458 0,780 2,525 1,015 5,841 4,600 0,695 0,800 2,548 1,020 5,926 5,000 0,808 0,810 2,571 1,025 6,015 5,500 0,920 0,820 2,592 1,030 6,090 6,000 1,028 0,830 2,614 1,035 6,207 7,000 1,134 0,840 2,634 1,040 6,296 8,000 1,231 0,850 2,691 1,053 6,422 10,000 1,337 0,860 2,711 1,060 6,506 12,000 1,434 0,870 2,782 1,080 6,591 15,000 1,528 0,880 2,886 1,113 6,676 20,000 1,620 0,890 3,083 1,178 6,727 25,000 1,712 0,900 3,278 1,252 6,761 30,000 1,795 0,910 3,477 1,334 6,830 32,767 1,879 0,920 3,678 1,428 1,959 0,930 3,883 1,535 2,037 0,940 4,164 1,707 2,113 0,950 4,296 1,802 1) calculated values Appendix 27

28 4.3.3 LSU 4.9, 300 Ω V Ip λ V Ip λ V Ip λ -2,331 1) 0,550 2,524 1,010 4,725 2,357-1,995 1) 0,570 2,594 1,030 4,807 2,469-1,673 1) 0,590 2,660 1,050 4,890 2,590-1,365 1) 0,610 2,747 1,077 4,972 2,724-1,069 1) 0,630 2,818 1,100 5,054 2,870-0,796 0,650 2,912 1,132 5,137 3,032-0,631 0,661 3,042 1,179 5,219 3,212-0,466 0,673 3,077 1,192 5,302 3,413-0,302 0,687 3,159 1,224 5,384 3,639-0,140 0,700 3,242 1,258 5,466 3,896 0,028 0,714 3,339 1,300 5,549 4,189 0,193 0,728 3,406 1,331 5,631 4,528 0,358 0,742 3,489 1,370 5,714 4,923 0,452 0,750 3,604 1,429 5,796 5,391 0,687 0,772 3,654 1,455 5,878 5,953 0,852 0,788 3,736 1,502 5,961 6,642 0,972 0,800 3,818 1,550 6,043 7,506 1,182 0,822 3,901 1,602 6,126 8,622 1,346 0,841 3,983 1,657 6,208 10,119 1,426 0,850 4,046 1,701 6,290 12,233 1,676 0,880 4,148 1,777 6,384 15,990 1,833 0,900 4,230 1,844 2,198 0,950 4,313 1,915 2,377 0,979 4,395 1,990 2,434 0,990 4,478 2,072 2,488 1,000 4,560 2,160 2,500 1,003 4,642 2,255 1) calculated values 28 Appendix

29 4.4 Ordering Descriptions and Accessories AWS2 Ordering Description Short Name Order Number Signal conditioning unit for lambda sensors AWS2 F 00K with - Sensor cable K113 for LSU 4.2/LSU 4.7, 3m, - Shorting bar for heater release AWS2_SCBR, - Curve files AWS2_CSV_D Signal conditioning unit for lambda sensors with - Lambda sensor LSUS_42, SR4 - Sensor cable CBL151-3 for LSU 4.9, 3 m - Shorting bar for heater release AWS2_SCBR, - Curve files AWS2_CSV_D Sensor Cable Sensor Cable for LSU 4.2, LSU 4.7 AWS2 F 00K Ordering Description Short Name Order Number Sensor cable for LSU 4.2 and LSU 4.7, K113 F 00K with jack RB130fl (Code 1), length 3 m Sensor cable for LSU 4.2 and LSU 4.7, CBL110-5 F 00K with jack RB130fl (Code 1), length 5 m Sensor cable for LSU 4.2 and LSU 4.7, K114 F 00K with jack RB130rd (Code 1), length 3 m Sensor cable for LSU 4.2 and LSU 4.7, with jack RB130rd (Code 1), length 5 m CBL111-5 F 00K Appendix 29

30 Sensor Cable for LSU 4.9 Ordering Description Short Name Order Number Sensor cable for LSU 4.9, CBL151-3 F 00K with jack RB150 (Code 1), length 3 m Sensor cable for LSU 4.9, CBL151-5 F 00K with jack RB150 (Code 1), length 5 m Sensor cable for LSU 4.9, CBL155-3 F 00K with jack RB150 (Code A), length 3 m Sensor cable for LSU 4.9, with jack RB150 (Code A), length 5 m CBL151-5 F 00K Other Accessories Ordering Description Short Name Order Number Shorting bar for heater release AWS2 AWS2_SCBR F 00K Curve files AWS2_CSV_D F 00K Lambda sensor LSU 4.2, SR4 LSUS_ Lambda sensor LSU 4.9, SR4 LSUS_ Appendix

31 5 ETAS Contact Addresses ETAS HQ ETAS GmbH Borsigstraße 14 Phone: Stuttgart Fax: Germany WWW: North America ETAS Inc Miller Road Phone: ETAS INC Ann Arbor, MI Fax: USA WWW: Japan ETAS K.K. Queen's Tower C-17F Phone: , Minatomirai, Nishi-ku Fax: Yokohama Japan WWW: Great Britain ETAS Ltd. Studio 3, Waterside Court Phone: Third Avenue, Centrum 100 Fax: Burton-upon-Trent Staffordshire DE14 2WQ WWW: Great Britain ETAS Contact Addresses 31

32 France ETAS S.A.S. 1, place des Etats-Unis Phone: SILIC 307 Fax: Rungis Cedex [email protected] France WWW: Korea ETAS Korea Co. Ltd. 4F, 705 Bldg Phone: Yangjae-dong, Seocho-gu Fax: Seoul [email protected] Korea China ETAS (Shanghai) Co., Ltd Bank of China Tower Phone: Yincheng Road Central Fax: Shanghai , P.R. China [email protected] WWW: 32 ETAS Contact Addresses