Exhaust-Emission Analysis On Models With Diesel Engines - Skoda Octavia IV 2020 Service Manual

Test values for exhaust emission analysis on models with petrol
engines
Engine codes
Engine temperature
Catalyst warming-up time
Recommended stabilised idling speed (rpm)
CO content at idle speed (measured downstream of catalytic con‐
verter)
7)
Recommended increased idling speed (rpm)
Lambda value when engine is running at fast idling
CO content when engine is running at fast idling
Lambda probe version
7) The homologation value given by the manufacturer (also listed in the vehicle homologation documentation). Due to corresponding
national regulations and standards, this value can be reduced during the exhaust emission test!
Note
All tubes and plug connections, which had been removed or
disconnected for the test, must be correctly re-inserted or con‐
nected.
8.2 Exhaust-Emission Analysis on Models
with Diesel Engines
Note
The exhaust-emission analysis must be carried out accord‐
♦
ing to the valid national legislation of the particular country.
The work station for the exhaust emission analysis must
♦
satisfy the applicable national and regulations in the country
concerned.
♦ When possible the exhaust emission analysis should be car‐
ried out immediately after the road test.
To reduce noise, the front flap must be closed during the
♦
measurement up to the first latching.
Perform the following visual inspections as well as com‐
♦
ply with the test conditions below before performing the ex‐
haust-emission analysis:
Visual inspection
♦ Fully-functional crankcase ventilation
♦ Fuel system and injectors must be leak-sealed
♦ The exhaust system must be undamaged, leak-tight and
complete
♦ All vacuum hoses are connected
Vehicles with catalytic converter
♦ Catalytic converter is fitted, leak-tight and undamaged
Vehicles with particle filter
♦ Particle filter is fitted, leak-tight and undamaged
Octavia IV 2020 ➤, Octavia IV 2021 ➤
Maintenance - Edition 12.2020
2 min. at 2500 rpm 2 min. at 2500 rpm
2300 - 3500
7)
Broadband probe
DPCA DJKA
min. 80 °C min. 80 °C
650 ... 750 700 ... 800
max. 0.3 % max. 0.3 %
2300 - 3500
0.97 - 1.03 0.97 - 1.03
max. 0.2 % max. 0.2 %
Jump probe
8. Exhaust-emission analysis
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