Performing A Test; Standard Test - ASSEMBLAD INFRAGAS-196 Operating Manual

Assemblad
3

PERFORMING A TEST

3.1

STANDARD TEST

Here the suggested procedure to test an engine is explained. It is also shown that
INFRAGAS-196 is a complete instrument to test in an exhaustive way the combustion
process and all the related devices of a car engine.
A) Install and switch on the instrument as explained in the preceding chapters.
B) Insert the gas takeup tip into the exhaust pipe.
C) Start the car engine and connect the RPM probe to one of the spark plugs cables,
being sure that the arrow on the body of the clamp is in the direction of cylinder.
D) Insert the temperature probe into the oil rod receptacle.
E) Using FUNC key select ambient temperature (AMB °C) and verify that its value is in
the range 0÷45 °C.
F) Using FUNC key select ambient pressure (PRESS mb) and verify that its value is in
the range 850÷1050 mbar.
G) Using FUNC key select oil temperature and wait until this parameter has reached 80
°C to be sure that engine has been properly warmed up. In case of lower temperature
keep the engine at about 2000 RPM until this temperature is reached.
H) When the proper oil temperature has been reached verify that RPM value is in the
range declared by the car manufacturer. In case of missing declaration RPM must not
exceed 1000 RPM.
I) If the 15 min. warm-up time is over, and Pump is OFF, press MEAS key and start
sampling exhaust gases (after a preliminary automatic self-calibration) until gas
readings are stable.
J) Print data (*) as a report of measurements done. Note that printer gives an additional
parameter: the corrected value of CO (CO corr). This paramenter is helpful in case of
leaks in the car exhaust pipe. Expression for CO corr is the following:
[CO] corr % = (#) x
where (#) it is:
ASSEMBLAD S.r.l. - Costruzioni Elettroniche - Via Marzabotto, 4 - 50013 Campi Bisenzio - Firenze - Italy
Tel. +39-055-890485 - Fax +39-055-890496 - E-mail: info@assemblad.it - Web: www.assemblad.it
Infragas-196 and Infragas-196 PC-Module * Operating manual
[CO%] / ( [CO%]+[CO2%] )
= 15 for engines supplied with gasoline
= 12 for engines supplied with CH4
= 14 for engines supplied with GPL
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