LAMBDA controller - LCB80

Technical Specification

Lambda Controller can be used for efficient combustion process in:

LAMBDA controller is based on circuit BOSCH CJ125 which serves basic function of oxygen sensor along with supporting microprocessor for filtering and control. Microprocessor also provides forwarding data to the diagnostic interface USB or CANbus in protocol SAE J1939. Lambda probe heater is controlled by PID regulator and the resistance of measuring cell (Nerns Cell) with auto-off option according to engine speed received from CANbus.

LAMBDA controller processes and visualizes data about Lambda mixture – λ, Oxygen – O₂, Ratio – A/F, Probe temperature – T [°C], Supply voltage – U[V] and Engine speed – RPM.

Main Features

• Supply voltage range 7 to 36V (12V/24V)
• Consumption 10W (Lambda heater)
• Operation temperature −40 to 85°C
• Support for Lambda sensor type: LSU 4.9 and LSU 4.2
• Used BOSCH CJ125 circuit and microprocessor support
• Visualization:
  • Lambda – λ .......................... 0.7 to 12.5 (± 0.1%)
  • Oxygen – O2 ........................ -7.5 to 20% (± 0.1%)
  • Ratio – A/F ............................ Gasoline, Diesel, Methanol, Ethanol
  • E85, LPG, CNG, Hydrogen
  • Temperature – T [°C] ......... -40 to 1050°C (± 3°C)
  • Supply voltage – U [V] ......... 7 to 50V (± 2%)
  • Analog out – AO  ................. 0-5V, 0-10V, 0-20mA, 4-20mA (± 0.1%)
  • Engine hours ....................... [h:m:s]
• CANbus support at protocol SAE J1939 (250kbps)
• Supported connection or integration with ECU MASTER
• Galvanically isolated USB – USB protection against earth fault and EMC disturbances
• PC application – configuration and visualization measured values
• Measuring the supply voltage
• Dimensions 118×101×23mm
• Spring terminals (screw terminals upon request)
  

Signal Description

 ^* Index of pins depends on Lambda probe type; index in brackets belongs to type LSU 4.2

Wiring schema

Application LAMBDA control – visualization software

Visualization is done from application LAMBDA control run on your PC. You will find the app at this website in the bottom - Aplication Software: "LAMBDA control...", as zip file.  The application works under Windows 95 and higher. Installation requires 4MB of free space at your hard disc.

To connect lambda to PC is used USB interface. The driver can be downloaded below "USBdriver...".

Visualized information

• Revolutions [RPM]
• Lambda – λ
• Oxygen – O₂
• Ratio – A/F
• Temperature – T [°C]
• Supply voltage – U [V]
• Analog output – AO [V/mA]
• Engine hours [h:m:s]

AFR – Air Fuel Ratio