Self Study Program 558 – Close-coupled Petrol Particulate Filter

VAG SSP 558. Particulate filters have been standard in vehicles with diesel engines for a while now. This applies to passenger vehicles, goods vehicles, buses and even tractors.

The first diesel engines equipped with particulate filters were used as early as the 1970s in mining and in factories. The first car with a particulate filter was produced in 1985 exclusively for the American market.

Volkswagen produced its first diesel vehicle with particulate filter in 2004 for the European market.

On 1 September 2017, the emission limits for the particle number were lowered for type approvals of vehicles with direct injection petrol engines in the EU. A transition period of one year shall apply to new vehicles that already have a type approval.

Volkswagen is, however, already pointing the way and is fitting a 1.4-l 110-kW TSI petrol engine with particulate filter in the Tiguan. The model with this engine is spearheading new developments in the area of petrol engines.


  • Introduction
    • Particulate filters for petrol engines
    • Useful knowledge for practice
    • Information on exhaust gas legislation
  • Exhaust gas basics
    • The composition of exhaust gases from petrol engines
    • The formation of particles
  • Measures on the engine
    • The measures inside the engine
    • The measure outside the engine
  • Measures in the exhaust system
    • Petrol particulate filter
  • Engine management system
    • Sensors
    • Particulate filter regeneration
  • Summary 
    • A comparison of particulate filters for petrol and diesel engines
  • Test your knowledge

The self-study programme shows the design and function of
new developments.
The contents will not be updated.

For current testing, adjustment and repair instructions, refer to the relevant service literature.

Language: English
Format: PDF
Pages: 28

Self Study Program 558 – Close-coupled Petrol Particulate Filter