Which is better, diesel or petrol? Is a diesel or petrol car better?

Traditionally, due to the different structures of gasoline engines and diesel engines, gasoline engines often belong to high-speed engines, which are faster in the long run, while diesel engines are low-rpm and high-torque engines, which are generally used for trucks, etc., but now each engine has developed greatly, so their respective advantages and disadvantages are not very obvious.

The characteristics of diesel vehicles are fuel-efficient, full of power, but the noise is too loud, the development trend of the car is diesel vehicles, but at present, there are too many diesel impurities in China.

Take Jetta as an example, diesel cars are fuel-efficient, but maintenance costs are expensive and noisy.

Gasoline vehicles are popular and easy to maintain.

I recommend a taxi with diesel, private car or petrol.

Diesel vehicles. High horsepower.

Plenty of power. Loud noise.

Pollution. Slow speed.

Suitable for pulling goods. Gasoline cars.

Low power. Fast speed.

Low noise.

The service life is different, the noise is different, and the economy is different.

First, the life of diesel vehicles is different, the compression ignition method is adopted, and the structure is much simpler than that of gasoline vehicles, so the engine failure rate is relatively low, which is quite resistant. The failure rate is low, and the life span is relatively long.

Second, the noise is different, the compression ratio of diesel engines is high, the maximum burst pressure in the cylinder is greater than that of gasoline engines, and the moment of inertia of crankshaft connecting rods and piston groups is larger, resulting in diesel engines not working softer, running smoothly and lower noise than gasoline engines.

Third, the economy is different, low fuel consumption, low oil prices are the most obvious advantages of diesel cars. Although the initial cost of diesel engines is relatively high, its fuel economy is about 30 percent higher than that of gasoline engines. Therefore, after a certain mileage of use, the cost of diesel engine car plus initial purchase fee is significantly lower than that of gasoline engine car.

Diesel vehicles have a bit more gravity than gasoline vehicles. Gasoline vehicles are light vehicles. Generally, trucks and SUVs with large displacement will choose diesel vehicles, which are powerful. Gasoline vehicles are general small cars and sedans, which are light and fast.

Each has its own advantages, and the decibels are as follows:

First, the advantages of gasoline vehicles.

1. The sound is small.

At this stage, no matter how diesel vehicles are made, the movement of gasoline vehicles is still smaller than that of diesel vehicles.

2. High power.

Disadvantages of gasoline cars.

1. High fuel consumption.

Usually, a grade of gasoline vehicles is about 25-30% more waste oil than diesel vehicles.

2. Small torque.

The torque of gasoline vehicles is generally 30%-40% less than that of diesel vehicles. Climbing hills, overtaking and planing, torque is the most important.

Second, the advantages of diesel vehicles.

1. Long life, economical and durable.

Diesel engine.

The speed is lower, the related parts are not easy to age, and the parts wear is also more than that of gasoline engines.

Less, the life is also relatively long, there is no ignition system, and there are few auxiliary electrical appliances, so the failure rate of the diesel engine is much lower than that of the gasoline engine, which has low fuel consumption and liters of electronically controlled common rail turbocharging.

The fuel consumption of a diesel engine is comparable to that of a liter of electronically controlled gasoline engine.

2. Low speed is large.

Torque diesel engines can usually obtain high torque at very small speeds, which is better than gasoline engines in complex road surfaces, climbing, and loading. However, it is not as good as gasoline vehicles in terms of speeding up and high-speed driving on the highway.

3. High security.

Compared with gasoline, it is not volatile and ignition point.

It is higher and less likely to be ignited or occur by accident**, so it is more stable and safe to use diesel than gasoline.

4. More environmentally friendly.

The greenhouse effect from diesel engine emissions.

45% lower than gasoline, carbon monoxide.

With hydrocarbon emissions are also low, just nitrogen oxides during the service life of the vehicle.

and PM (particulate) emissions are greater than those of gasoline engines. With the continuous progress of technology, its emissions have reached Euro III and Euro IV emission standards.

Diesel engine disadvantages.

1. Loud noise.

Vibrations affect driving comfort, so passenger cars are relatively rarely used. However, with the continuous progress of technology, some mid-to-high-end diesel vehicles have been quite close to gasoline engines, and major domestic and foreign automobile manufacturers have also launched many diesel cars and SUVs.

2. High manufacturing cost.

The fuel injection device of diesel engine is extremely precise and difficult to manufacture, and if inferior fuel is used, the life of the injection device will be seriously shortened. Due to the compression ratio of diesel engines.

It is very high, and it requires high structural strength, so the weight and volume will be relatively large.

3. Difficult to start.

Due to the fact that diesel is not volatile and compression ignition, etc., it starts coldly in winter.

Not as good as a gasoline engine. Even if there is a preheating device, it should be preheated for tens of seconds before it can be started.

It doesn't matter if it's a diesel car or a gasoline car, all. It's just that there are different types of diesel and gasoline vehicles. Diesel car power, suitable for pulling goods or pulling. Gasoline cars are mainly pulled.

It must be a gasoline car good. Because gasoline vehicles have a more obvious sense of acceleration than diesel cars, and it is also more convenient. So gasoline cars are good.

Diesel cars have the benefits of diesel cars, gasoline cars have the benefits of gasoline cars, relatively speaking, diesel cars are much more powerful than gasoline cars, but diesel cars are more expensive than gasoline, and diesel cars are more expensive than gasoline cars.

Personally, I think gasoline cars are better, because gasoline cars have better power, the driving environment will be more comfortable and quiet, and the driving experience will be better.

No matter how good it is, it will not be installed in a passenger car...

Some people say that diesel cars are better than gasoline cars, but there are very few people who buy diesel cars in China. You can't say that.

Let's see the traffic on the road. With 9 seats as the dividing line, gasoline vehicles with less than 9 seats account for a large proportion, and diesel vehicles with more than 9 seats account for a large proportion. More than 95% of trucks, especially bulk cargo, are diesel.

Why is this happening? The distinctive feature of diesel vehicles is high torque at low speeds. In other words, the climb should be adapted to the load. This can be applied to both passenger and freight transport.

Most of the vehicles with less than 9 seats are private cars, official cars, and unit blind cars, so Mohong does not have much requirement for the torque and load of the vehicle, so as long as the power is matched, everyone chooses gasoline vehicles.

The disadvantage of diesel cars is that they are easy to wax in winter, especially in extremely cold regions. In addition, diesel vehicles emit more pollutants than gasoline vehicles, and many places restrict diesel vehicles from entering the home.

In addition, diesel cars are noisier than gasoline cars. So gasoline vehicles are mostly passenger cars.

In fact, diesel cars have many advantages. Gasoline and diesel vehicles with the same horsepower consume less fuel than gasoline vehicles, and have higher load capacity and climbing ability.

To sum up, small cars are mostly gasoline vehicles, and large buses and trucks are mostly diesel vehicles.