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Evaporative-emissions system
A system capturing hydrocarbon vapours from the fuel tank and routing them to the engine.
Key facts
Knowledge domainTechnical foundation
Connected categoryemissions
VerificationSource and vehicle variant are evaluated together
System layerOtomotiv teknolojisi
Core architectureSensor / control / actuator
Variant requirementVehicle + year + market + software
Overview
Evaporative-emissions system is treated as a complete vehicle-system function rather than one component.
Its implementation combines sensing, control logic, wiring/software and physical actuation.
Exact pins, thresholds, capacities and calibrations depend on vehicle, model year, market and controller version.
Operating principle
- Giriş sensörleri
Main components
- Giriş sensörleri
Diagnostic and service approach
- Besleme/şase
- Üretici servis planı
- Compare commanded values with actual physical response.
- Interpret companion DTCs, freeze frame and live data together.
Variant and safety boundary
- The same marketing name may use different hardware and software across generations.
- Numeric service data is published only for an exact vehicle variant.
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