Why are major advantages & disadvantages of diesel & petrol engines (for city use)?

This problem causes a dilemma in the hearts of most purchasers. In fact, this is a very important choice. I will explain the advantages and disadvantages of diesel and gasoline vehicles. (We will skip the technical details and pay attention to the actual purpose)

1. Energetic Full Drive - The engine feels smooth and smooth. It is lightweight and easy to operate. Output is generally good (maximum speed)

1. Less torque, less traction (do not expect amazing performance before engine is boosted)

The overall cost of a car using a gasoline engine will be lower but the fuel cost will be somewhat higher and the efficiency will be lower. It is a good choice to buy a gasoline engine if you drive less and most travel is the limit of the city. If you do not drive a diesel car, you need a long time to break even you. Gasoline motor pocket is low, maintenance is easy, cheap spare parts

Compared with gasoline, fuel efficiency is high. Even at low speeds it is more efficient (you do not have to turn off the engine with a red light or worry about traffic jams).

5. High emissions (If you are an environmentally friendly person, I encourage you to avoid it based on this)

For vehicles equipped with diesel engines, the initial investment will be higher, but the most efficient and fuel cost will be lower. This is a good choice if you drive more to the public and often drive a highway. You will earn lots of acceleration, and fuel costs do not bother your pocket

Both diesel engines and gasoline engines convert fuel into energy through a series of small explosions or burning. The main difference between a diesel engine and a gasoline engine is how these explosions occur. In a gasoline engine, the fuel mixes with air, is compressed by the piston, and is ignited by a spark of the spark plug. However, in a diesel engine, air is first compressed and then fuel is injected. When the air is compressed, it is heated to about 400 ° C., because it is hot enough to ignite the fuel.

Regarding gas and diesel engine bus, both types of engines and fuels have advantages and disadvantages. When it becomes environmental impact, this is a draw. Historically, diesel engines have struggled to produce higher emissions than gasoline engines, but due to the regulations of the Environmental Protection Agency (EPA), today's natural gas and diesel emissions are negligible. Since EPA implemented the new diesel engine exhaust gas regulation in 2010, these two types of exhaust gas are almost the same.

Given the advantages of diesel engines to gasoline engines, there should be reasons to say that the former has never dominated the passenger car market. In the early days of diesel, there were indeed two main reasons for smell of fuel and "knock on diesel", especially during idling. Due to the complexity of the jet pump and the heavy construction required for the entire engine, construction costs are comparable to those of diesel engines. By 1930, however, Packard developed a 9 cylinder radial diesel aviation engine designed by Captain Woodstone. And it burned 225 bhp per hour at 1,900 points, weighing 2.27 pounds / bhp from 16 liters. It was rumored that the early packed engine can was fixed to the crankcase with buckling steel strip.