ACOVI

L'outil d'acquisition angulaire compact et performant développé par Aboard Engineering : analyse de combustion sur véhicule, contrôle moteur avec pression cylindre en boucle fermée.

Recording modes

Manually launched or externally triggered
Possible limitation of the record duration (expressed in number of cycles)
Pre-trigger : record N cycles preceding the recording trigger
"Post-mortem" : record N previous cycles to engine stall
possibility to select the data to be recorded (angular, calculated or both)

Performances

ACOVI_hand

The acovi allows to sample and process any analog signal (+ / - 10V) with a 0,5°CA resolution. For example, using cylinder pressure signals, the acovi computes in real time the key engine combustion characteristics (PMI / IHR / MFB / Pmax / Angle Pmax / pressure-volume diagram.

Thanks to a simple and ergonomic Graphical User Interface (GUI),running on a PC, the user can easily configure the tool parameters (engine architecture, acquisition type, recording mode).

Engineering

On customer request, ABOARD ENGINEERING can develop specific functions, addressing a particular need.

Application

On vehicle combustion analysis (thermal and hybrid engines)
Tuning and calibration on engine and vehicle
Characterisation of engine management systems (cylinder pressure....)
Reverse engineering of engine management systems
Cylinder pressure signal processing for closed loop engine control....

Technical description

Number of +/- 10V angular analog channels	4
Supported crank target	60-2 teeth / 60-1 / 36-2 / 36-1 /24 -1
Angular resolution of acquisition	0.5° CA up to 6.000 rpm 1° CA up to 10.000 rpm 2° CA up to 16.000 rpm
Calculation of combustion parameters	PMI - IHR - MFB -pressure / volume diagram Pmax -Pmax Angle
Calculated values sent on CAN bus	Pmax / Pmax angle / PMI /MFB

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