How Clean Are New Diesel Engines?

I just heard on the radio that, despite their well-deserved reputation for polluting the environment with fumes, soot, and other pollutants, diesel engines emit less carbon dioxide than gasoline engines. Is there any basis for this? Why does the trucking sector, as well as heavy equipment used in construction and other industries, rely on diesel?

When Volkswagen was exposed for placing software on its vehicles to cheat pollution tests, diesel engines took a tremendous, humiliating hit. However, diesel engines are more efficient than gasoline engines, and newer ones, according to one recent research, are cleaner, except for their greater nitrogen oxide emissions. Diesel sales have plummeted in Europe as a result of the problem, and some major towns, including as Paris, are considering banning them. Meanwhile, all-electric and hybrid automobile sales in Europe are steadily expanding.

Diesel engines are utilized in trucks and heavy machinery because they produce significantly greater torque than their gasoline-fueled counterparts, which means they simply push harder. They use many types of ignition: A diesel engine does not use spark plugs; instead, it compresses the air in its cylinders to the point where it becomes hot enough to ignite the diesel fuel.

Diesel is also utilized in huge trucks and other heavy equipment since the entire cost of running a diesel engine is about 30% less than that of a gasoline engine. In addition, a diesel engine can often run twice as long as a gasoline engine before requiring major maintenance. (Some Mercedes-Benz diesels have surpassed 900,000 miles.) Diesel engines emit less carbon dioxide than gasoline engines because they are more efficient. Diesel fuel has around 12% more energy per gallon than regular gasoline, and about 16% more energy than ethanol-containing gasoline.

According to a new study published in Scientific Reports by Canadian, European, and American scientists, newer diesel engines are actually cleaner than gasoline engines in several ways, and their visible pollutants are less harmful than the invisible toxins emitted by gas engines. Newer diesel engines, unlike earlier ones, have diesel particle filters that catch the majority of the toxic particulate matter. However, the amount of nitrogen oxide released by diesel engines continues to be an issue.

How clean are modern diesel engines?

According to Emissions Analytics, the latest Euro 6d-Temp diesel cars produce 71 percent fewer particles than their petrol counterparts. According to early testing by Emissions Analytics, new diesels produce 18 percent less CO2 in real-world testing.

Are new diesel engines bad for the environment?

While modern generation diesel engines release less carbon dioxide than gasoline engines, they tend to emit more NOx.

These emissions indicate that, in densely populated places, diesel engines are frequently the leading source of roadside air pollution, particularly among older vehicles.

As a result of these emissions, City Hall in London has implemented the T-charge, which targets the oldest and most polluting vehicles on the road.

Diesel car owners face additional taxes in addition to contributing to air pollution as the government attempts to wean the public off the vehicles.

For the first year of ownership, motorists who purchase new diesel vehicles have been subject to a VED tax increase from April 2018. Additional charges on diesel vehicles may be imposed by your local government through parking permits and other road-charging methods.

Are clean diesels really clean?

Clean diesel contains fewer sulfurs, which means that engines burn the liquid more efficiently and, as long as the engine is intended to be environmentally friendly, damage the environment significantly less than conventional systems. Clean diesel can be used as a normal fuel in TDI and hybrid engines, resulting in significantly less emissions than standard systems. Filters and catalytic converters are typically installed in hybrid and TDI engines to burn off nitrous oxide (or N2O), which is a major source of pollution from diesel engines.

Are 2021 diesel cars worth buying?

I was already worried about the future of diesel ICE vehicles. The Indian government’s announcement/news today has only given fuel to the fire.

1. Would you still consider purchasing a diesel vehicle?

2. What lifestyle modifications have you made in order to stay away from diesels indefinitely?

3. Do you believe diesel ICE automobiles will continue to sell in India in the commercial and personal markets for a long time?

I like diesel for the following reasons: mile-eaters, free-revving nature, high torque, better mileage, and the ability to drive for hours or days at a time. Most of us, I’m sure, do so for the same reasons. What are your thoughts on all of these criteria no longer being available? (For example, a turbo petrol with a strong/heavy right foot will become quite thirsty.) In fact, you’ll join the club of single-digit mileage drivers.)

We had a totally diesel garage in 2016, because most turbo diesels were more fun than their petrol counterparts at the time. Today, with BS6-related modifications such as DPF; lower and shorter running; and a desire to start living cleaner, etc., half of our garage is petrol and the other half is diesel, with the petrol consigned to the city and diesels more for longer excursions.

Long road travels in India are just that much more convenient with a diesel, with fewer fuel stops, less bother about fuel quality, and possibly even cleaner due to the fuel economy, given our infrastructure.

However, unlike some turbo diesels (yeah, I’m talking about you, S Cross 1.6), petrols warm up faster in the city, are quieter, and don’t suffer from turbo lag in traffic.

I can see EVs gradually taking over from diesels as they become more common, with convenient charging stations and a reasonable touring range, thanks to their quick torque and low fuel expenditures.

The BS6 standards have caused me to reconsider; I will not purchase another (new) diesel vehicle. I don’t want to deal with any DPF clogging or adblue difficulties.

For the most part, diesels are no longer available in the NCR. Unless the utilization is really high and the resale value is negligible, 10 years of usable lifespan is far too short.

No more diesels for me. It has a lot to do with gasoline costs, not simply the 10-year NCR deadline.

To go with my Hexa, I got a Jeep Compass last year to replace my aging diesel City. My plan was to utilize it as a touring vehicle because my family is large and requires two vehicles. Since then, diesel prices have risen by 35%. The cost of taking two large diesels on a long driving vacation has been turned on its head. Flights suddenly look so much more convenient, and in many cases, even cheaper. God only knows how high fuel prices may grow in the future; the possibilities are unlimited.

I can’t help but think, as good as the Compass is. I would have converted a gasoline vehicle to CNG and used it as my everyday transportation if I had purchased one. Or I could have gotten the ZS EV and saved 3-4 gallons of gas per year. Buying a diesel no longer makes sense to me. Currently, the two fuels are around the same price. Modern turbo petrol engines are only slightly less efficient than modern turbo diesel engines, but they are a lot more fun to drive. At these prices, flying or using the train for regular long-distance travel is preferable. For a car fan, this is a difficult reality to accept, but it is a reality nonetheless.

I’ll keep buying turbo-diesels as long as they’re on sale (easily another 15 – 20 years). Reasons:

– From an environmental standpoint, BS6 helps me feel more confident about driving a diesel. In two years, the Indian government plans to tighten emission regulations even more.

– In some cases, a diesel engine is just the superior alternative (Altroz, almost all big SUVs, Thar…).

– Diesel is the only engine option for several amazing automobiles (Endeavour, Carnival).

– Diesel is the more reliable alternative in some vehicles. For example, Seltos Diesel AT vs Seltos Petrol DCT (robust diesel, torque converter AT) (complex petrol, dual-clutch AT).

– I adore the torquey character of huge diesels (although new turbo-petrols are now available), as well as their workhorse nature.

– I adore how diesels allow you to “have your cake and eat it too.” I can drive aggressively and still maintain a good FE. Even when I drive my 530d hard on the highway, I get 10 to 11 kilometers per liter. I’ve seen 3 to 5 kmpl in a 6-cylinder petrol. On a Bombay-Goa drive, I get 15 kmpl in my 530d if I drive peacefully. A 6-cylinder petrol would get 9 to 10 kmpl in this situation. My 530d gets 7 kmpl in the city. A 6-cylinder petrol engine would get 4 to 5 kmpl.

– More importantly, there is no substitute for displacement + 6 cylinders. I’m addicted to German automobiles’ luscious 6-cylinder 3.0L diesels. With 6-cylinder diesels, there are lots of possibilities (beginning with the E-Class and 5-Series), but 6-cylinder petrol options are few and far between.

– At the end of the day, if I’m buying a car, I’ll go with the best engine option for that model, whether it’s petrol, diesel, or electric.

Are new diesel cars less polluting?

Despite the fact that diesel vehicles release more particles than gasoline vehicles, their CO2 emissions are often lower. It’s also worth noting that older diesels emit significantly more particles and CO2 than modern diesels, and that the European Union has been enforcing emissions regulations since 1992.

The initial European emissions rules, which took effect in January 1993 and applied to all new automobiles registered after that date, set a carbon monoxide (CO) limit of 2.72g/km and a nitrogen oxide (NOx) limit of 0.97g/km for diesel engines.

The Euro 5 standard, which applies to vehicles registered after January 2011, has achieved significant advancements. To meet the 0.18g/km NOx limit, diesel-powered vehicles must be equipped with diesel particulate filters (DPFs), which trap 99 percent of all particulate matter before it exits the exhaust.

The most recent diesel-powered vehicles (those sold after September 2015) meet Euro 6 emissions standards and are the cleanest in history. They have systems that convert most of the NOx from the engine to relatively harmless nitrogen and water, as well as DPFs; their NOx emissions are limited to 0.08g/km by law.

How many miles a year do you justify diesel?

Diesel is losing favor in the United Kingdom for a variety of reasons. However, if you drive 15,000 miles or more each year, a diesel automobile might be suitable for you. Because diesel is roughly 20% more efficient than gasoline, it should be cheaper to run in the long run, but only for drivers who travel large distances or frequently utilize highways.

If you reside in a city and/or drive less than 15 miles every trip, buying a gasoline is a better option. When driving a diesel automobile at low speeds, it emits the greatest pollution, and some aspects of a diesel car might become problematic if utilized wrongly.

Are short journeys bad for diesel engines?

This is also known as “diesel car city driving,” and it is something you should avoid. It’s common knowledge among petrolheads, but it’s always worthwhile to explain why.

Low-speed, short-distance driving easily clogs your Diesel Particulate Filter (DPF). If you have a high annual mileage (imagine 10,000+ miles per year) or mostly drive on highways, the effect will be significantly slower.

Is diesel going to be banned?

Nobody expects diesel to be officially outlawed, though some cities are likely to make the dirtiest types illegal. AdBlue and diesel particulate filters (DPF) are technologies that are designed to filter out soot particulates and nitrogen oxides (NOx) emissions, which have been related to health problems.

Can diesel engines be made cleaner?

Electronic controls, common rail fuel injection, variable injection timing, improved combustion chamber architecture, and turbocharging, among other advanced new technology, have made diesel engines cleaner, quieter, and more powerful than previous cars.