General
Directive 70/220/EEC, last amended by Directive 2003/76/EC, concerning measures for the prevention of air pollution from motor vehicle emissions.
Directive 96/96/EC, last amended by Directive 2003/27/EC, concerning the technical monitoring of motor vehicles and motor vehicle trailers.
The purpose of the current Directives, is the maintenance of low emission levels during the entire service life of motor vehicles, by means of regular exhaust gas emissions tests and to ensure that the vehicles mainly responsible for the pollution are taken out of circulation for that period of time during which they are not properly maintained.
Several member states have issued their own regulations concerning exhaust gas emissions tests for light motor vehicles (especially passenger vehicles), which are more stringent than the EC Directive 96/96/EC.
On-Board Diagnostic System (OBD)
The OBD system is the name for a diagnosis system that is integrated in the engine electronics for monitoring emission-related components, and is capable of indicating malfunctions (e.g. catalytic converter efficiency degradation, occurrence of combustion misfiring, failure or power loss of oxygen/oxygen sensors, fuel injection system or the like) with the aid of fault codes stored in the computer and displaying the probable cause thereof. In Europe the on-board diagnosis system is also referred to as EOBD.
The "Fault" or "Malfunction Indicator" (= MI) denotes a visual (lamp = MIL) signal which warns the driver of the vehicle quite clearly that there has been a malfunction in an emission-related component connected to the OBD system or within the OBD system itself.
Motor Vehicles with Self-Ignition Engines (Diesel Engines)
To measure smoke opacity, the engine speed is increased quickly with the transmission in neutral (no load), i.e. the engine is accelerated from idle to cut-off speed.
Note. Adam Opel GmbH has determined its own reference values using suitable testers and measurement procedures. These special limit values are listed in the tables and are applicable.
The EGE directive makes provision for extended tolerances for road traffic vehicles. Therefore, the specifications for diesel engine speeds and smoke density limit values differ with respect to type test values and EGE values. This is necessary in order to take account of normal wear and distance driven:
All values specified in this brochure are the EGE test values.