Please comment on the pros and cons of petrol and diesel cars

When it comes to today's automobile market, it is called a fire, and the main reason for the fire is probably the price reduction. In the uproar of price reduction, the car dream of countless families seems to be getting closer and closer. However, there are also headaches, gasoline prices have continued to rise, oil prices have hit record highs, and the problem of fuel consumption has become one of the top considerations for consumers today.

In view of the increasingly serious fuel consumption problem in China, Professor Gong Jinke, director of the China Internal Combustion Engine Society, pointed out that China should end the history of only gasoline cars and vigorously develop diesel cars with good fuel economy.

The development of diesel cars in our country is an inevitable trend, and the development of some diesel vehicles on the basis of gasoline vehicles can fully reflect the advantages of gasoline vehicles and diesel vehicles, and at the same time, it can also make full use of the proportion of gasoline and diesel energy structure in our country. Diesel vehicles are more fuel-efficient than gasoline vehicles, which is determined by the technical characteristics of the engine. Because the compression-ignition diesel engine has a higher energy conversion than the ignition gasoline engine, the energy consumption is 45%-60% of the gasoline engine, and the diesel ** is lower than the gasoline**, the engine has less complex high-pressure ignition device than the gasoline engine, and the life is generally longer than the gasoline engine product, so the fuel economy of the diesel engine is better than that of the gasoline engine.

At the same time, diesel engines also have outstanding advantages over gasoline engines in terms of safety and environmental protection.

Diesel fuel is not volatile, has a high ignition point, and is not easy to be ignited or occur due to accidental circumstances**; The emission of carbon dioxide is also about 30%-35% lower than that of gasoline engines, and the exhaust emissions of diesel vehicles are better than those of gasoline vehicles.

In addition, the diesel engine is also very small in terms of power and gasoline engine, some performance parameters are even better than gasoline engine, for example, the low-speed torque of diesel engine is relatively large, which is reflected in the diesel car climbing ability is stronger than gasoline car, and the acceleration at low speed is faster than that of gasoline engine.

Based on the above technical characteristics of diesel vehicles, foreign countries are increasing the popularization of diesel cars, according to the data, European diesel cars have accounted for 32% of the annual production of cars, France, Spain and other countries are as high as more than 50%. Compared with the development of foreign diesel cars, the domestic car market is still dominated by gasoline vehicles.

In view of this situation, Professor Gong pointed out that the quality of diesel in China is the most important reason restricting the development of domestic diesel cars. At present, the diesel quality in most parts of the country simply cannot meet the requirements of the latest Euro III and IV emission standards for diesel engine technology, and the fuel with higher sulfur content will not only lead to the deterioration of the diesel vehicle emission system, but also shorten the engine life and increase the repair and maintenance costs.

In addition, most of the domestic consumers' awareness of modern diesel engines is still very low, and most people still stay in the 70s of the last century on the understanding that the black smoke is billowing and the noise is unbearable, and there will be great resistance to diesel cars. In response to this situation, Professor Gong pointed out that with the development of new diesel engine technology, diesel vehicles have made great progress in exhaust emissions and noise reduction.

Gasoline Eco-friendly Diesel has high emissions.

Gasoline is small and diesel is strong.

Gasoline is highly resistant to violence Diesel has no anti-violence.

In fact, the energy of diesel is higher, and the diesel engine is more powerful!

It's easy for a gasoline car to get shot**, diesel won't, hahaha.

The advantages and disadvantages of diesel and gasoline cars are as follows:

1. Advantages of gasoline vehicles

The sound of gasoline vehicles is small, and at this stage, no matter how the diesel car is made, the movement of the gasoline car is still smaller than that of the diesel car. Gasoline vehicles also have a lot of power, generally around 100kw.

Disadvantages of gasoline cars

High fuel consumption of gasoline vehicles Usually, a level of gasoline vehicles is about 25-30% more waste oil than diesel vehicles. Gasoline vehicles also have less torque, generally 30%-40% less than diesel vehicles. Climbing hills, overtaking and planing, torque is the most important.

2. Advantages of diesel vehicles

Diesel car has a long life, economical and durable, the speed of the diesel engine is low, the relevant parts are not easy to age, the wear of parts is less than that of the gasoline engine, the life is relatively long, there is no ignition system, and there are few auxiliary appliances, so the failure rate of the diesel engine is much lower than the fuel consumption of the gasoline engine, and the fuel consumption of the electronically controlled common rail turbocharged diesel engine is comparable to the fuel consumption of the electronically controlled gasoline engine.

The low-speed and high-torque diesel engine of diesel vehicles usually can obtain high torque at a very small speed, 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.

Compared with gasoline, diesel vehicles are not easy to volatile, have a higher ignition point, and are not easy to be ignited or occur due to accidental circumstances**, so the use of diesel is more stable and safe than the use of gasoline.

Disadvantages of diesel cars

Diesel vehicles are noisy and vibrate, which affects 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.

The fuel injection device of the diesel engine, which has a high manufacturing cost, is extremely precise and difficult to manufacture, and if inferior fuel is used, the life of the injection device will be seriously shortened. Because the compression ratio of diesel engines is very high, it requires high structural strength, so the weight and volume will be relatively large.

Advantages and disadvantages of gasoline cars:

Advantages: (1) The engine noise is small, and friends who take buses and tractors should have experience, the movement is already very small, but the personal feeling should still be bigger than the gasoline engine.

2) High power.

2) Low torque. The torque of gasoline vehicles is generally 30%-40% less than that of diesel vehicles. Climbing up the hill, overtaking and digging pits, relying on torque for diesel cars.

Advantages and disadvantages of diesel vehicles:

Advantages: (1) Fuel saving. Diesel vehicles of the same level are about 30% more fuel-efficient than gasoline vehicles.

2) Large torque. The torque of diesel vehicles of the same level is generally about 30% greater than that of gasoline vehicles.

Disadvantages: (1) Loud sound. The sound of diesel cars is still greater than that of gasoline cars. It's a loud voice, and you'd better hear it yourself.

If you want to buy a G10, is it better to buy a diesel car or a gasoline car, ask about the advantages and disadvantages of diesel cars and gasoline cars, probably diesel cars save some fuel, gasoline cars are more comfortable, do you have any suggestions??? If you want to buy a G10, is it better to buy a diesel car or a gasoline car, ask about the advantages and disadvantages of diesel cars and gasoline cars, probably diesel cars save some fuel, gasoline cars are more comfortable, do you have any suggestions??? Look at what it is for, if it is to pull the goods, it must be diesel, the torque is large, the power is sufficient, if it is to pull people, the gasoline is enough, a little bit of the diesel engine maintenance cost is low, the failure rate is low, the maintenance cost of the gasoline engine is high, the diesel engine should be maintained at a certain temperature, and the engine is not fuel-efficient for the diesel car, which is indeed the case.

Gasoline cars are generally front-engined, and the speed is high (the maximum speed of the general car is 8000 rpm), its advantages are high speed, vibration and sound are smaller, and the more sensitive car burns gasoline and runs faster. And diesel cars are different! Not only the rear engine, but also the speed is not high (generally up to 4500 rpm), and its advantage is that it has a lot of horsepower!

Gasoline cars are less powerful. Diesel cars are more powerful than gasoline cars. When diesel cars burn oil, they will remove very black gases.

To put it simply, diesel saves money, strong, but there are also disadvantages, the noise is relatively large, and the most afraid is the emission problem, now the emission standard is updated too fast, gasoline is more convenient, not as troublesome as diesel, advantages: (1) the engine noise is small, friends who take buses and tractors should have experience, the movement is already very small, but the personal feeling should still be larger than the gasoline engine (2) power. Cons: ...

Diesel engines should maintain a certain temperature'In addition, flame-out is not fuel-efficient for diesel vehicles. Indeed it is. Gasoline vehicles are generally front-engined with high revs (up to 8000 rpm).

Its advantages are that it is fast, has little vibration, has little sound, and has high sensitivity The car burns gasoline and runs fast. But diesel cars are not the same! Not only the rear-mounted engine, but also the speed is not high (generally up to 4500 rpm), which has the advantage of high horsepower!

However, the top speed is not as good as that of a gasoline car (for example, the Jetta gasoline version can run 150-160km h, and the diesel version can only run 130km h).

The operation is a bit clumsy! The vibration and sound are relatively loud! This is evident when idling in place!

Big cars run fast on diesel! In addition, diesel cars have idle speed (that is, after starting the car, you can drive at a certain speed without stepping on gas, and diesel cars and gasoline cars are also different in driving control!). For example, when the car starts, the speed is not the same!

Gasoline is more volatile than diesel, but diesel has a lower ignition point than gasoline (most people don't know this). Thus, taking advantage of this property, gasoline and air are atomized proportionally in a carburetor or intake manifold and compressed in a cylinder.

It is then ignited by the spark plug, burned, and expanded to do work, driving the crankshaft to rotate. The diesel engine uses a high-pressure fuel injector to inject diesel directly into the cylinder for atomization, and then compresses it naturally to reach the deflagration point, without the need for spark plugs. The difference between the two in performance is that the gasoline engine has a high speed, generally reaching 7000 rpm, easy to start, and low noise, but there are many auxiliary sail and electrical equipment, and the maintenance is complicated.

The diesel engine has the characteristics of high torque, simple structure, high reliability, low fuel consumption and good fuel economy.

Modern advanced diesel engines are more environmentally friendly (this will be explained later), but the disadvantages are low speed (4000 5000 rpm), high noise (which has been well solved in small high-speed diesel engines for automobiles), and the use of low-quality diesel or improper maintenance is prone to black smoke. Therefore, we can find that domestic large vehicles and construction machinery use diesel engines, while automobiles use gasoline engines. It's not rotten.

It must be a little more advantageous, the first petrol car is cheap and fast, and it is more environmentally friendly than diesel cars.

Yes, it's a bit big, and the car can run a lot of kilometers, and you won't have any problems driving around the stool, and it will smell too bad. All parties know that the rough file is very perfect, and there are many advantages.

The advantages are very many, the fuel consumption of the gasoline car is particularly low, its ** is also particularly cheap for the Xiangchang party, the speed of the gasoline car is also very fast, and the vibration attack and the sound of the slap are particularly small and sensitive.

First of all, the working characteristics of the diesel engine determine that its thermal efficiency can easily crush the gasoline engine, although the current mainstream manufacturers claim that the thermal efficiency of the gasoline engine has made a great breakthrough, but this is only the maximum thermal efficiency in the ideal state, and does not mean that the combustion flame temperature of the diesel itself is higher than that of gasoline in the actual driving, which will have some power advantages; Secondly, the diesel engine adopts a compression-ignition ignition that can make full use of thermal energy, and theoretically has more torque under the premise of other parameters. However, the real fuel-saving principle of diesel engines relies on speed.

These factors are the key to the real impact on the market ownership of diesel vehicles; Consumer cognition is the most important, and consumer cognition can also be understood as consumers' consumption habits or interpretation of cars; In the field of passenger cars, in the mid-80s of the last century, there were still individual private cars, the advantages of diesel vehicles are relative to gasoline vehicles, the advantages of gasoline vehicles are relative to diesel vehicles, and the advantages of diesel vehicles are more, but the advantages of gasoline vehicles are more, so the sales of gasoline vehicles are much higher.

The disadvantage is that the movement is loud, and the sound of a tractor is really similar. It is difficult to refuel on the highway, and it takes a long time to refuel with a large truck! Although the efficiency of the diesel engine can be as high as 50%, far exceeding the thermal efficiency of the gasoline engine of 40%, the post-treatment of the gasoline engine is extremely simple, and a three-way catalytic converter can be done.

There are relatively few models of pickup trucks, and the second, and most important feature is that diesel cars vibrate! Especially when waiting for the traffic light, the car is very vibrating, except for the million-dollar luxury car, the diesel engine of the Land Rover or something, the movement is small, and the noise is loud! Tens of thousands of family cars are not very acceptable, and the general large machinery uses more diesel, so the amount of civilian diesel is small, and the domestic diesel emissions are not up to standard, and individual areas prohibit personal diesel vehicles on the plate.

The main thing is that the engine oil power is relatively strong, and in the process of inhaling the mixture, but the diesel often inhales fresh air, the gasoline engine is ignited, but the diesel engine is compression ignition, there is still a big difference between the two.

The refueling location is very convenient, and saves time and effort, the price of gasoline is cheap, protect the earth's environment, the current environmental pollution situation is very serious, our country attaches great importance to the protection of the environment, with gasoline, there may be some good protection of the environment.