What`s the Diesel Exhaust Fluid (DEF)?
- Be used for dealing with car exhaust.
- Comprise of around 67% deionized water, 32% urea.
Normally, urea is in solid form.
The most common is for fertilizer in agriculture, and urea also be in medicine, food, and cosmetics; vehicles use more purity and cleanness requirements.
The exhaust gas emitted by diesel cars is not friendly to the environment, so the drivers need to inject urea regularly.
Urea can turn NOx into nitrogen and water, which will improve the emission pollution.
The filling port for urea is next to the diesel port.
The consumption ratio of diesel cars is around : 20 part of diesel will consume 1 part of urea.
How to judge if the urea is expired?
The car urea generates Ammonia (pungent odor) under high temperatures, so we can judge from the odor if the urea is expired.
Is injecting urea necessary?
If the driver ignores the lack of urea, driving will still be possible, but the top speed will be lowered under the electric monitoring.
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