AdBlue® has become a standard additive in many modern diesel vehicles. However, it is crucial to recognize that not all engines are compatible with this technology.
Vehicles meeting Euro 4, Euro 5, Euro 6, and newer emission standards typically require AdBlue®. Older diesel vehicles, especially those made before 2004, generally do not use Selective Catalytic Reduction (SCR) systems. Therefore, they do not require AdBlue®.
Additionally, non-road vehicles like certain construction equipment and small diesel generators do not always require AdBlue®. If their emissions meet permissible limits, AdBlue® is unnecessary.
Some diesel vehicles use Diesel Particulate Filter (DPF) systems to reduce soot emissions. In certain cases, these DPF systems can function effectively without AdBlue®, albeit with varying degrees of emission reduction.
Vehicles that require AdBlue® have SCR systems, which include several components: the AdBlue® tank, pump, injector, and SCR catalyst. The system operates by injecting AdBlue® into the hot exhaust gas upstream of the SCR catalyst.
Commercial vehicles, such as trucks and buses, are predominant users of AdBlue® due to their extensive long-distance operations and the significant benefits of reduced nitrogen oxide (NOx) emissions, which help meet increasingly stringent emission regulations.
Modern diesel passenger cars, particularly those manufactured post-implementation of Euro 4 emission standards, are generally fitted with SCR systems and thus require AdBlue®.
Similarly, industrial and construction diesel engines, including power generators and heavy machinery, frequently employ SCR systems and utilize AdBlue® to comply with various national emission regulations.
Source: https://www.jakartadaily.id/manufacturing/16213239624/compatibility-of-adblue-with-diesel-engines
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