Module offers CAN connectivity and pressure compensation

Paul Boughton
Labcell has introduced the ECM LambdaCAN module for in-vehicle and dynamometer applications where a wide measurement range and fast response are required.

Being CAN-compatible means that the lambda (air-fuel ratio) module is easy to integrate within a CAN-based control and monitoring system and the module is also offered with a pressure compensation option that improves accuracy dramatically when the engine is operating away from stoichiometric conditions.

Targeted at engine designers, developers and tuners, and capable of operating with all Bosch and NTK-type next-generation wideband sensors, the LambdaCAN measures from 0.40 to 25 lambda (and AFR from 6.0 to 364, and per cent O2 from 0 to 25) with an accuracy of +/-0.005 lambda at stoichiometric.

Response time is less than 150ms, and the LambdaCAN can be programmed for use with any fuel. The sensors are factory calibrated, with the calibration stored in a chip mounted within the sensor's connector. Recalibration can be performed readily in ambient air, with the recalibration also stored in the chip.

For users interested in non-stoichiometric conditions, the LambdaCAN module is available with optional pressure compensation to improve accuracy; it also enables the module to be used in applications such as the measurement of percentage oxygen in the inlet manifold. If the pressure compensation option is utilised, the pressure data is available via the CAN bus in the same way as the lambda data.

The LambdaCAN module benefits from a compact (145 x 120 x 40mm), rugged, sealed casing with through holes that enable multiple modules to be mounted together either in the vehicle or the dynamometer cell.

Data can be read by any suitable device on the CAN bus. For in-vehicle applications Labcell offers the ECM dashCAN two-channel display. Alternatively, the LambdaCAN module can be connected to the ECM 5220 Lambda Analyser for in-vehicle or dynamometer applications, or up to 16 modules can be multiplexed for monitoring individual cylinders.

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