Bosch LSU 4.9 O2 Sensor
Description
OVERVIEW
The Bosch LSU sensor is a 5 wire Wideband Lambda sensor. It is used to control fuel and ignition systems to optimize a car’s performance in the areas of emissions, power or fuel economy.
The Lambda sensor can be connected to
- M1 ECUs using an LTC – (Lambda to CAN)
- PLM – (Professional Lambda Meter)
- Dash/Enclosed Logger
- Hundered series ECUs with a Lambda upgrade enabled
Lambda gives a measure of the Air to Fuel Ratio (AFR) that is independent of the type of fuel being used.
| Lambda 1.00 | Stoichiometric ratio: no excess fuel and no excess air |
| Lambda >1.00 | Lean: excess air |
| Lambda <1.00 | Rich: excess fuel |
MoTeC ECUs allow for a Lambda aim table based on load and RPM. Referencing the measured Lambda, the Quick Lambda function in the software adjusts the values in the fuel control table at the specified load and RPM site to achieve the aim Lambda.
Similarly, the Lambda Was function adjusts the values in the fuel control table using recorded Lambda measurements from a data log.
ACCESSORIES
- 59001 – LAMBDA BUNG MILD STEEL WELD-IN 18 x 1.5
- 59002 – LAMBDA BUNG STAINLESS STEEL WELD-IN 18 x 1.5
- 64010 – LAMBDA CONNECTOR KIT BOSCH LSU 4.9
- 61118 – PLM BOSCH LSU 4.9 ADAPTOR LOOM
Complete Kit
- The complete Lambda kit contains a PLM, Bosch LSU 4.9 Lambda sensor, and all required looms and accessories
- 15005 – PLM – KIT WITH LSU 4.9 LAMBDA SENSOR 2.5 METRE
- 15005LL – PLM – KIT WITH LSU 4.9 LAMBDA SENSOR 6 METRES
SPECIFICATIONS
- Maximum continuous operating temperature is 930 °C
- Maximum temperature for a short period is 1030 °C (maximum 10 minutes)
- Mounting torque 60 Nm max
- Lifetime estimates
- Sensor lifetimes are highly dependent on application. Typically sensor lifetime for high performance engines is 500 hours in unleaded fuel and 50 hours in leaded fuel.
- Fuel: Unleaded gasoline, ethanol gasoline blends, methanol, diesel, LNG, CNG, LPG
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