• March 18,

Diesel Exhaust Fluid Machine

Diesel engines have long been relied upon for their power and efficiency, but they also produce harmful emissions, particularly nitrogen oxides (NOx). To address this environmental concern, the use of Diesel Exhaust Fluid (DEF) has become crucial.

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In this article, we will explore the importance of DEF in diesel engines and delve into the world of DEF machines , discussing their functionality, types, benefits, and factors to consider when choosing one.

What is Diesel Exhaust Fluid (DEF)?

DEF, also known as AdBlue®, is a non-toxic, colorless liquid that converts harmful nitrogen oxides into harmless nitrogen and water vapor through a chemical reaction. It is composed of high-purity or Technical Grade urea and Deionized water. DEF is classified as an aqueous urea solution and is standardized according to the ISO standard.

Understanding Diesel Exhaust Fluid Machines

1. How DEF Machines Work

DEF machines are designed to handle the storage, dispensing, and refilling of DEF. These machines typically consist of a storage tank, a pump, a metering system, and a dispensing nozzle. The storage tank holds the DEF, while the pump and metering system ensure accurate dispensing based on the user’s requirements.

2. Types of DEF Machines

There are various types of DEF machines available, ranging from compact units for individual use to larger systems for commercial applications. Some DEF machines are designed for stationary installations, while others are portable and suitable for on-the-go refilling. Common types include DEF dispensers, bulk DEF systems, and mini-bulk DEF systems.

3. Benefits of Using DEF Machines

Using DEF machines brings several benefits. They enable efficient and accurate dispensing of DEF, eliminating the risk of spills and wastage. DEF machines also ensure the proper handling and storage of DEF, maintaining its integrity and preventing contamination. Additionally, these machines often come with integrated monitoring systems that provide real-time data on DEF levels and usage.

Diesel Exhaust Fluid machines play a vital role in the effective and efficient use of DEF in diesel engines. These machines provide adequate quality of Deionized Water and Diesel Exhaust Fluid solution ensuring compliance with environmental regulations and reducing harmful emissions. When selecting a DEF machine, consider factors such as capacity, quality, user-friendliness, and maintenance requirements to make an informed choice. By following best practices and implementing regular maintenance, you can maximize the lifespan and performance of your DEF machine.

Factors to Consider When Choosing a DEF Machine

When selecting a DEF machine, several factors should be taken into account to ensure optimal performance and user satisfaction.

1. Capacity and Output

Consider the volume of DEF required for your specific application. Choose a machine with an appropriate storage capacity and dispensing output to meet your needs efficiently on daily as well as monthly basis.

2. Quality and Accuracy

Ensure that the DEF machine meets the required quality standards and provides accurate metering and dispensing. Look for certifications such as ISO and check user reviews for reliability and performance.

3. User-Friendliness and Maintenance

Opt for a DEF machine that is user-friendly and easy to operate. Consider features such as intuitive controls, clear instructions, and ease of maintenance for a hassle-free experience.

Tips for Buying and Using Quality AdBlue®

Operate a fleet of diesel engine vehicles, such as a heavy goods vehicle (HGV)? Learn more about AdBlue®

With all modern diesel engine vehicles such as heavy goods vehicles (HGVs) now required to use a process called selective catalytic reduction (SCR), finding a reliable supplier of AdBlue® for your business is of utmost importance.

What is AdBlue®?

AdBlue® is an exhaust fluid, not to be confused with a fuel additive, and is the most recognised form of Diesel Exhaust Fluid (DEF), although it’s a trade name registered by the German car manufacturer’s association.

The most recent emissions legislation (Euro 6) introduced in saw the use of AdBlue® becoming mandatory to help minimise nitrogen oxide emissions released from diesel engines. In order to be used in diesel engines, AUS32 diesel exhaust fluid needs to meet ISO specifications.

What is AdBlue® made of?

AdBlue® is a non-toxic, odourless mixture made up of deionised water (67.5%) and urea (32.5%), which is where it gets its official name from (AUS32, Aqueous Urea Solution 32.5%).

Many people think AdBlue® is made of pig urine – but we can assure you it is not! Urea is a compound in nitrogen that turns into ammonia when heated. It’s technically derived from a by-product of urine but it is synthetically made for mass production.

Although its name insinuates that AdBlue® is blue, it is in fact colourless.

What does AdBlue® do?

AdBlue® is needed to meet legal emission standards to improve public health and reduce the UK’s overall emissions footprint. Beyond the legal requirements of its usage, AdBlue® also helps to reduce the number of harmful pollutants released from diesel-engine vehicles. This, of course, is beneficial for any business aiming to reduce its own carbon footprint, as well as helping to protect the environment. Here at Crown Oil, we’re doing all we can to reduce our own carbon footprint.

As the UK’s largest sole contributor of greenhouse gases, it’s no surprise that the transport sector is under increasing pressure to reduce pollution levels.

Where does AdBlue® go?

Our AdBlue® diesel exhaust fluid (DEF) comes in secure packaging with clear instructions on how to use it. There should be a specified tank on your vehicle for topping up the DEF tank with the AdBlue® solution.

AdBlue® is stored in a separate container and is topped up using a blue filter cap located either next to your fuel filler, under the bonnet or in the boot. Your vehicle’s handbook will include any fitted AdBlue® technology and how to add it safely.

The SCR system in your vehicle is very sensitive, so care must be taken because if anything other than diesel exhaust fluid in that tank, you risk damaging the vehicle.

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Even water can damage the SCR system on your vehicle, so it’s not advisable to water down your AdBlue® additive if you find you’re running low. If your SCR system is damaged, it can be very expensive to repair it, so it is important to be cautious when handling your AdBlue® and top-up your vehicles.

How does AdBlue® work?

AdBlue® reduces harmful emissions through a process called Selective Catalytic Reduction (SCR). Diesel never actually comes into contact with AdBlue® as both fluids are stored separately, which is also known as after-treatment technology, allowing the manufacturer to build as much power as they want.

Before emissions are released, AdBlue® is sprayed on the exhaust fumes after combustion, where the aqueous urea is converted into ammonia and CO2. This breaks down harmful mono-nitrogen oxides in the exhaust, leaving nitrogen and water which are released into the atmosphere through the exhaust system.

What happens if I run out of AdBlue®?

Vehicles give plenty of warning when AdBlue® is running low in the tank, usually via an alert on the dashboard. If your tank runs dry while you’re driving, the engine’s power and performance will drop to limit emissions.

Once the engine has stopped, it won’t restart until the tank has been topped up.

Which vehicles use AdBlue®?

If you have a diesel vehicle from Land Rover, Jaguar or any German or French manufacturer and it was registered after September , it will use AdBlue®. Engines with over 1.6-litre capacity will in almost all instances feature AdBlue® technology. Without this, many diesel cars would not meet new strict emission regulations.

However, some older vehicles also use AdBlue®, so it’s always best to check:

• The vehicle handbook
• If there’s an AdBlue® filler cap
• If the model name contains SCR or Blue
• With your dealer

How long does AdBlue® last?

Only a small amount of AdBlue® is used every journey and a full tank is likely to last you several thousand miles. However, AdBlue consumption depends on the engine and how economically you drive. It is usually around 1 litre every 600 miles, but some vehicles use as much as 1 litre every 350 miles.

Most drivers will fill up their AdBlue tank at least once between services. Our guide to AdBlue gives a more in-depth estimate of how much diesel engine fluid vehicles will use.

What is the shelf life of AdBlue®?

If AdBlue® is stored at ambient temperatures of around 24 degrees Celsius, it will last around two years. But if it’s subject to temperature fluctuations, its lifespan will decrease to around 1 year.

Is AdBlue® dangerous?

No, it’s completely harmless to humans, but it can corrode bodywork if spilt, so it’s important to take care when transporting and topping up your tank.

Will AdBlue® freeze?

The standard 32.5% solution will begin to crystallise and freeze at -11.111oC. When mixed, urea and water free at the same rate, so when the fluid thaws, it does not become diluted or overly concentrated, therefore having no impact on the grade of the product.

Can I add antifreeze to AdBlue® to prevent it freezing?

DEF is a specific formulate of 32.5% urea and water, but it also contains other compounds in minute quantities to stabilise it. Adding additives would affect the precise chemical makeup and therefore reduce the NOx-reducing properties. Any additional blending will compromise its ability to work properly and potentially harm the SCR system.

Are AdBlue® emulators illegal?

Yes, AdBlue® emulators effectively allow a vehicle to run without a working SCR system, tricking the engine and therefore breaking the law. These devices deactivate the warning light on a vehicle’s dashboard that alerts the driver that the diesel exhaust system is not working.

AUS32 is an effective way to help the industry in its efforts to reduce its environmental impact, so it’s alarming that an increasing number of transport operators are illegally using these cheat devices to disable pollution control systems.

During random roadside tests carried out between August and February , the Driver and Vehicle Standards Agency (DVSA) found that of the 10,237 trucks checked, 293 contained a cheat device that switches off the use of AdBlue®.

Why are transport operators using AdBlue® emulators?

Using the diesel exhaust fluid is an added running cost for operators – especially those who travel long distances. Disabling AdBlue® could save companies around 5% of costs but would increase emissions by almost 2.5 times the safe level. There are legal implications around modifying your vehicle’s emissions, which could result in potential penalties of £1,000 for a car and £2,500 for a van, lorry or bus.

Tips for safely using and handling AdBlue®

• The diesel exhaust fluid tank on your vehicle is clearly marked
• You can never be certain of the quality of a product with a similar name. So make sure you always buy AdBlue® from a reputable supplier
• When you need to refill, only use equipment that’s designed for diesel exhaust fluid
• Always close the AdBlue® tank cover firmly after refilling
• Diesel exhaust fluid will start to freeze at -10°C but it can be used when it has thawed.
• If you need to clean your AdBlue® container, use demineralised water
• Use water to clean any AdBlue® that has spilt on surfaces, inside your vehicle or even on the ground
• Storing AdBlue in direct sunlight will damage the quality of it
• Your tank which holds white diesel fuel is not designed for AdBlue® so make sure you don’t mix the tanks up
• Putting anything other than AdBlue® in the AdBlue® tank can be damaging and expensive to repair
• Other fluids cannot be mixed with AdBlue® – not even water, as it will damage the SCR.
• If you think water or any other fluid has got into your AdBlue®, do not use it and call us on 123 for advice.

Where can you buy AdBlue®?

Buying cheaper AdBlue® may help to reduce costs initially, but it can actually leave you with expensive problems in the future, including:

• Higher pollution levels
• Pressure build-up
• Decreased fuel economy

You can buy DEF at most petrol stations and from Crown Oil. As a nationwide AdBlue® supplier with vast buying power, we can offer huge savings on your AdBlue®, and deliver it directly to your site – simply call us for the latest AdBlue® prices. Alternatively, if you’re in the area, you can pick it up from one of our oil depots.

We also have a vast range of ancillary products and dispensing equipment on hand, such as hand pumps, IBC dispensers and drip trays to avoid contamination and spills.

If you have any further questions about AdBlue® that we haven’t answered here, you can call 123 to get further advice as well as request a quote.

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