Traditional Culture Encyclopedia - The 24 Solar Terms - Diesel vehicles have many advantages. Why is the sales volume low?
Diesel vehicles have many advantages. Why is the sales volume low?
The characteristic of high torque is the treasure of daily driving. It was brisk at first, and overtaking at low and medium speeds was explosive and unambiguous. If it's not a big uphill road, you don't have to take it. The more leisurely you drive, the more you can feel the constant motivation behind the uphill road, and the more practical you are. For the person you like, the ticking of diesel engine is simply the mechanical sound of nature. Calm when idling, powerful when driving. Especially when driving at a low speed with the accelerator on, I can't help but open the window and turn off the music when I hear the deep and powerful click and the hiss of the turbocharger.
But diesel vehicles also have disadvantages. Diesel oil has high viscosity and weak volatility, and it is easier to burn because of the characteristics of diesel engine injection combustion, and it will not completely produce black smoke. Therefore, it is easy to get dirty inside the diesel engine. No matter how well managed, the throttle intake manifold valve always contains a lot of carbon deposits, and the newly changed oil is almost black when it is pumped out within a few minutes of idling. This does not affect our normal use, but it is easy to cause exhaust problems. Many diesel pickup trucks around will look for scalpers during the annual inspection. The combustion flame temperature of diesel oil itself is higher than that of gasoline, which will have some power advantages.
The higher the speed, the greater the fuel consumption, which is the characteristic of all engines. The speed limit of gasoline engine is relatively loose, assuming the acceleration time is the same. The speed of gasoline vehicles is two or three thousand revolutions per minute more than that of diesel vehicles. Under the premise of the same displacement, diesel vehicles are of course more fuel-efficient standards. This is the key factor of diesel economy. If the diesel engine adopts rolling ignition which can make better use of heat, theoretically, under the premise of the same other parameters, it will have greater torque. The actual fuel economy principle of diesel engine depends on the limitation of rotational speed, which refers to the frequency of crankshaft rotation per minute.
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