Lambdatronic LT4

Application

Lambda 0.75 to 10.12

Compatible Bosch sensor type

LSU 4.2, LSU 4.9, Mini-LSU 4.9

Channels

4

Heater

Internal

Weight with wire

98 g

Sealing

100 % humidity

Mounting

Velcro

Size w/o wire (w*l*h)

54 x 59 x 13 mm

Operating temp. range (housing)

-20 to 85°C

Storage temp. range

-20 to 85°C

Max. vibration

Vibration Profile 1 (see Downloads or www.bosch-motorsport.com)

Power supply U_S

(6.5) 10 to 14 V

Max power supply (1 min) U_S

Max. 26 V

Thermal dissipation loss

3 W at 14 V

Current Is

5 A

Current Is (Heating up)

26 A

System Configuration tool RaceCon 2.7.0.9 or later

Signal output 1

CAN

Signal output 2

4 x 0 to 5 V “analog”

CAN- baud rate

500 kbaud or 1 Mbaud

Signal resolution

2,5 * 10-4 lambda

Signal sampling rate

100 Hz

CAN refresh rate

100 Hz

Connector

AS614-35PN

Connector loom

AS114-35SN

F02U.000.365-01

Sleeve

Viton

Wire size

26

Wire length L

20 cm

Pin

Function

1

+ 12 V (Battery +)

2

+ 12 V (Battery +)

3

Ground (Battery -)

4

Ground (Battery -)

5

K-Line diagnostic connection

6

CAN1 + (high)

7

CAN1 - (low)

8

Analog out 1

9

Analog out 2

10

Analog out 3

11

Analog out 4

12

Reference GND for analog out

13

Shield

14

Pump current LSU 1 IP1

15

Virtual GND LSU 1 VM1

16

Heater PWM LSU 1 Uh-1

17

Heater (Batt +) LSU 1 Uh+1

18

Setup current LSU 1 IA1

19

Nernst voltage LSU 1 UN1

20

Pump current LSU 2 IP2

21

Virtual GND LSU 2 VM2

22

Heater PWM LSU 2 Uh-2

23

Heater (Batt. +) LSU 2 Uh+2

24

Setup current LSU 2 IA2

25

Nernst voltage LSU 2 UN2

26

Pump current LSU 3 IP3

27

Virtual GND LSU 3 VM3

28

Heater PWM LSU 3 Uh-3

29

Heater (Batt +) LSU 3 Uh+3

30

Setup current LSU 3 IA3

31

Nernst voltage LSU 3 UN3

32

Pump current LSU 4 IP4

33

Virtual GND LSU 4 VM4

34

Heater PWM LSU 4 Uh-4

35

Heater (Batt. +) LSU 4 Uh+4

36

Setup current LSU 4 IA4

37

Nernst voltage LSU 4 UN4

Communication link

K-Line / CAN

Typical lifetime: max. 220 h / 2 years

For application with severe conditions and/or high volume, please contact your Bosch Motorsport counterpart in order to define the most appropriate validation program

The LT4 is designed to supply 4 Bosch lambda sensors, type LSU 4.2, LSU 4.9 or Mini-LSU 4.9

The LT4 is featured with voltage compensation for the heating profile

The 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 sensor and box is recommended.

The unit is secure from miss-pinning.

The reference ground (GND_REF) has to be connected either to the measuring device or to the system ground.

A ground offset of 2 V (max.) between GND and GND_REF has not to be exceeded.

See the LT4 function sheet for software documentation (e.g. CAN protocol).

Please find further application hints in the offer drawing at our homepage.