As a consequence of a higher compression ratio (longer stroke and turbocharger), diesel engines produce more torque which means you get more acceleration off the line.
As mentioned earlier diesel fuel is denser and contains 39.6 MegaJoules/liter of energy compared to 33.7 MegaJoules/liter of gasoline. This indicates that every time the diesel fuel is burnt more amount of energy is transferred to the pistons thus increasing the torque on the crankshaft.
However, diesel engines run considerably leaner and can also use significant quantities of EGR to dilute the intake charge. Thus, more airflow and higher boost pressure are required for a given fuel flow in a diesel than for a gasoline engine running with a stoichiometric air-fuel ratio and having a similar output.
A diesel engine has more torque which means it can more easily move off, and you are less likely to stall.
In regards to actually learning to drive, you'll find there's not going to be much difference, only that the diesel may feel more powerful and is more noisy to drive. You'll notice these more if you practice with a friend or family member in a car that's a petrol.
Diesel engines are less prone to stalling because they usually have more torque – or “turning power” – which means they're harder to stop.
If you're going to be driving long distances or using your truck for heavy-duty towing on a regular basis, a diesel truck should suit. If you plan to go off-roading, head into less populated areas, or carry heavier items in your cargo bed, the typical gas engine might be the way to go.
Fuel Efficiency: Petrol engines use more fuel to produce more power while diesel engines use more air to increase compression and burn the fuel more effectively. Drivability: Diesel engines provide better acceleration while petrol engines provide better top speed.
The reason that diesel engines produce more torque than gasoline engines is that diesel fuel has greater compression resistance than gasoline. Because of the stability of diesel fuel — its compression resistance, — mechanical engineers can develop compression engines for diesel fuel.
The high compression ratio of diesel vehicles generates more torque, making diesel engines a better choice for pulling or hauling lots of weight. More torque. The high compression ratio of diesel vehicles generates more torque, making diesel engines a better choice for pulling or hauling lots of weight.
Diesel engines operate at a relatively low engine speed compared to gasoline engines which can help to extend the life of the turbocharger, but on the flipside of the coin, the turbo on a diesel engine will produce much higher boost pressure than on a gasoline engine.
You should therefore allow your engine to rev to the redline at least once every few hundred miles – but only when the oil is warm and you're on a quiet road. Diesel cars may also have problems with clogged diesel particulate filters (DPFs), which are designed to trap harmful exhaust emissions.
Turbochargers offer a number of benefits, including: Fuel efficiency: Diesel is 33% more fuel-efficient than gasoline, and turbochargers further increase diesel fuel efficiency. Improved performance: While ramping up horsepower, they lower emissions and improve altitude compensation.
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.
De-Stroked Duramax at a insane 7,800 High-RPM.
Once the excess gas in the fuel lines is used up, though, your engine can shut off, and you'll be stranded. That's because gasoline engines cannot easily combust diesel fuel. Since diesel fuel is very low in octane, depending on the amount of contamination, the engine may run rough or start knocking.
No. Engines are designed in such a way that they can perform at redline without breaking down or taking damage at those RPMs. This doesn't mean that you should redline your engine often. Working at peak performance be it an engine or anything else will take its toll and cause wear and tear.
Environment - Emissions from diesel engines contribute to the production of ground-level ozone which damages crops, trees and other vegetation. Also produced is acid rain, which affects soil, lakes and streams and enters the human food chain via water, produce, meat and fish.
If you maintain a diesel engine well and drive carefully, it can last 400,000 km before needing a major engine overhaul.
Between 1,300 and 1,500 RPM is the most fuel-efficient engine speed, or what some would call the “sweet spot.”
Consider Diesel Engine Heating Options
Because this puts the engine at a higher temperature, it will be easier to start and will require less time to warm up before driving.
Diesel engines normally have lower redlines than comparably sized gasoline engines, largely because of fuel-atomization limitations; even a small diesel engine, such as a Yanmar 2GM20 found on a sailboat, has a redline of 3400 RPM continuous, with a maximum 1-hour rating of 3600 RPM.
Due to diesel engines' increased fuel economy, you can get up to double the kilometres out of a tank, meaning less trips to the service station. Diesel fuel is less prone to price fluctuations than petrol.
Slow Down and Drive Conservatively
Speeding increases fuel consumption and decreases fuel economy as a result of tire rolling resistance and air resistance.
It's normal for your car's gasoline engine to run for around 200,000 miles before it needs a serious overhaul, or you need a new vehicle. But diesel engines can continuously run for an impressive 1,000,000-1,500,000 miles before needing any major work.