Zum Hauptinhalt springen

Lambdatronic LT4

Lambdatronic LT4

The Lambdatronic LT4 provides controlled pumping current to supply up to 4 Bosch lambda sensors, type LSU 4.2, LSU 4.9 or Mini-LSU 4.9. The lambda value, the sensor temperature and diagnostics are available via CAN and analog signal.

The LSU contains a Nernst and a pump cell. The lambda in the Nernst cell is controlled to lambda = 1.013 independent of the oxygen contents on the emission side, through a current through the pump cell. The current proportional output voltage of the IC is a measure of the lambda value.

The main feature and benefit of this unit is the combination of the Bosch well known lambda IC and a very compact box size with motorsport specification. Furthermore the analog signal output can be configured freely.

Product Highlights

Features

  • Supply of up to 4 Bosch lambda sensors, type LSU 4.2, LSU 4.9 or Mini-LSU 4.9
  • Integrated voltage compensation for sensor heater

Downloads

Literature


Software

Product Details

Application
Lambda 0.75 to 10.12
Application
Compatible Bosch sensor type
Lambda 0.75 to 10.12
LSU 4.2, LSU 4.9, Mini-LSU 4.9
Application
Channels
Lambda 0.75 to 10.12
4
Application
Heater
Lambda 0.75 to 10.12
Internal
Mechanical Data
Mechanical Data
Weight with wire
98 g
Mechanical Data
Sealing
100 % humidity
Mechanical Data
Mounting
Velcro
Mechanical Data
Size w/o wire (w*l*h)
54 x 59 x 13 mm
Mechanical Data
Operating temp. range (housing)
-20 to 85°C
Mechanical Data
Storage temp. range
-20 to 85°C
Mechanical Data
Max. vibration
Vibration Profile 1 (see Downloads or www.bosch-motorsport.com)
Electrical Data
Electrical Data
Power supply US
(6.5) 10 to 14 V
Electrical Data
Max power supply (1 min) US
Max. 26 V
Electrical Data
Thermal dissipation loss
3 W at 14 V
Electrical Data
Current Is
5 A
Electrical Data
Current Is (Heating up)
26 A
Software Tool (free download)
Software Tool (free download)
System Configuration tool RaceCon 2.7.0.9 or later
Characteristic
Characteristic
Signal output 1
CAN
Characteristic
Signal output 2
4 x 0 to 5 V “analog”
Characteristic
CAN- baud rate
500 kbaud or 1 Mbaud
Characteristic
Signal resolution
2,5 * 10-4 lambda
Characteristic
Signal sampling rate
100 Hz
Characteristic
CAN refresh rate
100 Hz
Connectors and Wires
Connectors and Wires
Connector
AS614-35PN
Connectors and Wires
Connector loom
AS114-35SN
F02U.000.365-01
Connectors and Wires
Sleeve
Viton
Connectors and Wires
Wire size
26
Connectors and Wires
Wire length L
20 cm
Pin Assignment
Pin Assignment
Pin
Function
Pin Assignment
1
+ 12 V (Battery +)
Pin Assignment
2
+ 12 V (Battery +)
Pin Assignment
3
Ground (Battery -)
Pin Assignment
4
Ground (Battery -)
Pin Assignment
5
K-Line diagnostic connection
Pin Assignment
6
CAN1 + (high)
Pin Assignment
7
CAN1 - (low)
Pin Assignment
8
Analog out 1
Pin Assignment
9
Analog out 2
Pin Assignment
10
Analog out 3
Pin Assignment
11
Analog out 4
Pin Assignment
12
Reference GND for analog out
Pin Assignment
13
Shield
Pin Assignment
14
Pump current LSU 1 IP1
Pin Assignment
15
Virtual GND LSU 1 VM1
Pin Assignment
16
Heater PWM LSU 1 Uh-1
Pin Assignment
17
Heater (Batt +) LSU 1 Uh+1
Pin Assignment
18
Setup current LSU 1 IA1
Pin Assignment
19
Nernst voltage LSU 1 UN1
Pin Assignment
20
Pump current LSU 2 IP2
Pin Assignment
21
Virtual GND LSU 2 VM2
Pin Assignment
22
Heater PWM LSU 2 Uh-2
Pin Assignment
23
Heater (Batt. +) LSU 2 Uh+2
Pin Assignment
24
Setup current LSU 2 IA2
Pin Assignment
25
Nernst voltage LSU 2 UN2
Pin Assignment
26
Pump current LSU 3 IP3
Pin Assignment
27
Virtual GND LSU 3 VM3
Pin Assignment
28
Heater PWM LSU 3 Uh-3
Pin Assignment
29
Heater (Batt +) LSU 3 Uh+3
Pin Assignment
30
Setup current LSU 3 IA3
Pin Assignment
31
Nernst voltage LSU 3 UN3
Pin Assignment
32
Pump current LSU 4 IP4
Pin Assignment
33
Virtual GND LSU 4 VM4
Pin Assignment
34
Heater PWM LSU 4 Uh-4
Pin Assignment
35
Heater (Batt. +) LSU 4 Uh+4
Pin Assignment
36
Setup current LSU 4 IA4
Pin Assignment
37
Nernst voltage LSU 4 UN4
.

Further Information

Communication link
K-Line / CAN
Typical lifetime: max. 220 h / 2 years
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
Typical lifetime: max. 220 h / 2 years
The LT4 is designed to supply 4 Bosch lambda sensors, type LSU 4.2, LSU 4.9 or Mini-LSU 4.9
Typical lifetime: max. 220 h / 2 years
The LT4 is featured with voltage compensation for the heating profile
Typical lifetime: max. 220 h / 2 years
The unit can be connected to any CAN system (500 kbaud or 1 Mbaud) and analog measuring device.
Typical lifetime: max. 220 h / 2 years
To avoid signal errors, a cable length of maximum 1.5 m between sensor and box is recommended.
Typical lifetime: max. 220 h / 2 years
The unit is secure from miss-pinning.
Typical lifetime: max. 220 h / 2 years
The reference ground (GND_REF) has to be connected either to the measuring device or to the system ground.
Typical lifetime: max. 220 h / 2 years
A ground offset of 2 V (max.) between GND and GND_REF has not to be exceeded.
Typical lifetime: max. 220 h / 2 years
See the LT4 function sheet for software documentation (e.g. CAN protocol).
Typical lifetime: max. 220 h / 2 years
Please find further application hints in the offer drawing at our homepage.

Lambdatronic LT4
Order number: F01T.A20.070-09

Generally blocked are direct and indirect business involving high risk destinations, including Russia, Belarus, Cuba, Iran, North Korea, Syria, Libya, Afghanistan, and certain non-governmental controlled Ukrainian regions. This list may change as geopolitics evolve.