lambdatronic lt4 datasheet 51 en 2785631627pdf
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Bosch Motorsport | Lambdatronic LT4
Lambdatronic LT4
www.bosch-motorsport.com
u Supply of up to 4 Bosch lambda sensors, typeLSU 4.2, LSU 4.9 or Mini-LSU 4.9
u Integrated voltage compensation for sensor heater
The Lambdatronic LT4 provides controlled pumpingcurrent to supply up to 4 Bosch lambda sensors, typeLSU 4.2, LSU 4.9 or Mini-LSU 4.9. The lambda value,the sensor temperature and diagnostics are availablevia CAN and analog signal.The LSU contains a Nernst and a pump cell. The lamb-da in the Nernst cell is controlled to lambda = 1.013 in-dependent of the oxygen contents on the emissionside, through a current through the pump cell. The cur-rent proportional output voltage of the IC is a measureof the lambda value.The main feature and benefit of this unit is the combi-nation of the Bosch well known lambda IC and a verycompact box size with motorsports specification. Fur-thermore the analog signal output can be configuredfreely.Functions
Application Lambda 0.75 to 10.12Compatible Bosch sensor type LSU 4.2, LSU 4.9, Mini-LSU 4.9Channels 4Heater Internal
Technical SpecificationsMechanical DataWeight with wire 98 gSealing 100 % humidityMounting VelcroSize w/o wire (w*l*h) 54 x 59 x 13 mmOperating temp. range (housing) -20 to 85CStorage temp. range -20 to 85CMax. vibration Vibration Profile 1 (see Appendix
or www.bosch-motorsport.com)Electrical DataPower supply US (6.5) 10 to 14 VMax power supply (1 min) US Max. 26 VThermal dissipation loss 3 W at 14 VCurrent Is 5 ACurrent Is (Heating up) 26 ASoftwareConfiguration with Modas Sport Included
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CharacteristicSignal output 1 CANSignal output 2 4 x 0 to 5 V analogCAN- baud rate 500 kbaud or 1 MbaudSignal resolution 2,5 * 10-4 lambdaSignal sampling rate 100 HzCAN refresh rate 100 HzConnectors and WiresConnector AS 6-14-35PNConnector loomAS 1-14-35SN
F 02U 000 355-01
Sleeve VitonWire size 26Wire length L 20 cmPin AssignmentPin Function1 + 12 V (Battery +)2 + 12 V (Battery +)3 Ground (Battery -)4 Ground (Battery -)5 K-Line diagnostic connection6 CAN1 + (high)7 CAN1 (low)8 Analog out 19 Analog out 210 Analog out 311 Analog out 412 Reference GND for analog out13 Shield14 Pump current LSU 1 IP115 Virtual GND LSU 1 VM116 Heater PWM LSU 1 Uh-117 Heater (Batt +) LSU 1 Uh+118 Setup current LSU 1 IA119 Nernst voltage LSU 1 UN120 Pump current LSU 2 IP221 Virtual GND LSU 2 VM222 Heater PWM LSU 2 Uh-2
23 Heater (Batt. +) LSU 2 Uh+224 Setup current LSU 2 IA225 Nernst voltage LSU 2 UN226 Pump current LSU 3 IP327 Virtual GND LSU 3 VM328 Heater PWM LSU 3 Uh-329 Heater (Batt +) LSU 3 Uh+330 Setup current LSU 3 IA331 Nernst voltage LSU 3 UN332 Pump current LSU 4 IP433 Virtual GND LSU 4 VM434 Heater PWM LSU 4 Uh-435 Heater (Batt. +) LSU 4 Uh+436 Setup current LSU 4 IA437 Nernst voltage LSU 4 UN4
Installation Notes
The LT4 is designed to supply 4 Bosch lambda sensors, type LSU 4.2,LSU 4.9 or Mini-LSU 4.9The LT4 is featured with voltage compensation for the heating profileThe unit can be connected to any CAN system (500 kbaud or 1 Mbaud)and analog measuring device.To avoid signal errors, a cable length of maximum 1.5 m between sensorand box is recommended.The unit is secure from miss-pinning.The reference ground (GND_REF) has to be connected either to themeasuring device or to the system ground.A ground offset of 2 V (max.) between GND and GND_REF has not to beexceeded.See the LT4 function sheet for software documentation (e.g. CAN proto-col).Please find further application hints in the offer drawing at our home-page.
Communication
Communication link K-Line / CAN
Ordering InformationLambdatronic LT4Order number F 01T A20 070-08
2 | Lambdatronic LT4
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Dimensions
3 | Lambdatronic LT4
Represented by:
Europe: North and South America: Asia-Pacific: Australia and New Zealand: Bosch Engineering GmbHMotorsportRobert-Bosch-Allee 174232 AbstattGermanyTel.: +49 7062 911 79101Fax: +49 7062 911 [email protected]
Bosch Engineering North AmericaMotorsports38000 Hills Tech DriveFarmington Hills, MI 48331-3417United States of AmericaTel.: +1 248 876 2977Fax: +1 248 876 [email protected]
Bosch Engineering Japan K.K.Motorsport Department18F Queens Tower C, 2-3-5 Minato MiraiNishi-ku, Yokohama-shiKanagawa 220-6218JapanTel.: +81 45 650 5610Fax: +81 45 650 [email protected]
Robert Bosch Pty. Ltd1555 Centre RoadClayton, Victoria, 3168AustraliaTel.: +61 (3) 9541 3901Fax: +61 (3) 9541 [email protected]
Bosch Engineering GmbH 2014 | Data subject to change without notice2785631627 | en, V1, 28. May 2014