The new L4 emission control standard is stricter than standard L3 on 2 main points
- Выбросы токсичных компонентов
- Check cycle
This new standard is mainly centred around the emission of pollutants, from the starting phase (coolant temperature between 20 and 30 ° C) and around monitoring of the correct operation of the emission control systems
The injection systems, as they are currently designed, are not able to comply with this new standard; new ECU strategies and new components are now necessary
Новые стратегии для выполнения этих норм снижения токсичности
- Sequential injection
- Maximise the efficiency of the catalytic converter during the cold phase (reduce the time required for priming of the catalytic converter) and monitor it to ensure that it operates correctly
- Combustion cycle monitoring (combustion diagnostics)
New components
- Реле компрессора, подающего воздух в выпускную систему
- Воздушный насос подачи воздуха в глушитель
- Клапан подачи воздуха в выпускную систему
- Датчик кислорода на выходе (каталитический нейтрализатор)
- Vertical accelerometer on the vehicle body