Best answer: What’s different about a diesel engine?

Are diesel engines better?

Diesel engines are still more efficient than gas engines, but less so for those who are mostly engaged in city driving. Diesel cars also have more torque, which results in better fuel economy along with more impressive acceleration. … For most U.S. consumers, diesel fuel and gas fuel cost about the same.

Why are diesel engines more efficient?

Diesel engines are more efficient than gasoline engines for two reasons: (i) higher cylinder pressures and corresponding higher temperatures lead to improved thermal efficiency for the diesel engine; (ii) the air throttling required to control the gasoline engine power output reduces engine efficiency and is not used …

What are the disadvantages of a diesel engine?

Cons of diesel cars

Diesel fuel usually costs more. Servicing can be more expensive, although you don’t need to do it as often. Diesel cars produce a lot more NO2. Diesel engines can be slightly noisier.

What is unique about diesel engine?

Here are some interesting facts about diesel fuel. Diesel engines compress air to one out of 20 parts per volume. … Diesel fuel is more efficient than gasoline engines. With gas engines, only 20% of the fuel actually moves the vehicle and the rest is lost to friction, noise, or other engine functions.

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Is it bad to let a diesel engine idle?

Most engine manufacturers recommend that newer diesel engines idle for no more than 3 minutes before driving. … Letting an engine idle actually does more damage to the engine than starting and stopping. Running an engine at idle causes twice the wear on internal parts com- pared to driving at highway speeds.

What is the average life of a diesel engine?

But diesel engines can continuously run for an impressive 1,000,000-1,500,000 miles before needing any major work. In fact, a well-maintained diesel engine can be on the road for 30 years or more.

What is high mileage for a diesel engine?

Diesel Rule 1: NEVER buy high mileage

To be clear – avoid diesel cars with over 100,000 miles on the clock.

Should I buy a diesel if I dont tow?

You don’t have to tow with it to properly maintain it but it does need to work some, get it good and hot. If you plan on taking trips, driving for a couple hours or more than it will be fine. Diesels are made to run all day long, hours on end. Maintance is key so you will have to step it up a bit on that end of things.

What are the pros and cons of a diesel engine?

The Pros and Cons of Diesel Engines

  • PRO: Diesels get great mileage. …
  • CON: Although diesel fuel used to be cheaper than gasoline, it now often costs the same amount or more. …
  • PRO: Diesel fuel is one of the most efficient and energy dense fuels available today.
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Are Short Trips bad for diesel engines?

Short trips do not let the diesel engine get warmed up well enough to remove deposits and keep carbon from accumulating and being burnt off. That’s all really. You need at least 15-20 minutes of loaded running to get it to temp and say about 1 hour straight a month of highway driving minimum to keep it all happy.

What are the bad things about diesel?

Diesel fuel (refined from crude oil) produces many harmful emissions when it is burned, and diesel-fueled vehicles are major sources of harmful pollutants, such as ground-level ozone and particulate matter.

Is it a bad idea to buy a diesel car?

Despite the negative headlines, the impressive fuel economy of diesel cars means they still make more sense than petrol and hybrid models if you do a high annual mileage or cover a lot of miles on the motorway. … Just bear in mind that, if your driving is mainly town-based, diesels really are best avoided.