Carburetor or injector?
Application of various constructive decisions frequent not always clearly for the majority of rayder. However everyone has the merits and demerits.
The carburetor and injector (fuel injection) carry out the same function, namely form vozdushno – a fuel mix for its giving in engine cylinders. In what difference and who has advantages?
It would seem for the majority this question it is obvious and they will give a palm to an injector as the last completely forced out the carburetor from automobile motors. For the majority, an injector which is now realized in the form of the device of injection of fuel with electronic control, the thing though mysterious, but is represented much more simply than the carburetor. For whom operation of the engine is reduced to turn of a key and the gas handle, will undoubtedly prefer an injector.
However everything isn't so simple. The injector appeared as a result of development of electronics and requirements on reduction of emissions from combustion in the atmosphere. The carburetor representing difficult system working at the expense of a difference in pressure, obrazuyemy in an inlet collector, its main channels and the atmosphere, at the correct control forms optimum structure of a fuel mix. For those who isn't so familiar with this question, we will report that the fuel mix happens poor, rich and nominal if to estimate it by amount of fuel of air falling on volume arriving in the cylinder. And the carburetor forms such structure of a mix which is necessary to the engine for the concrete moment of work. At start, the system of enrichment submits very rich mix necessary for warming up of the engine to the engine. At acceleration, the accelerating pump sharply injected an additional portion of fuel enriching a mix and allowing to raise a torque on low turns. At work without reduction or increase in turns, in cylinders the balanced mix which has been a little grown poor arrives. Setup of the carburetor is carried out by a selection of fuel and air jets. As a rule in most cases it becomes once. As a result of use of the carburetor the engine receives very good dynamic characteristics, allowing to be accelerated and realize sharply potential of volume not only on high turns, but on averages and even on the low. However, purity of emission left much to be desired.
Appeared electronics allowed to create an injector which could realize the concept of the grown poor fuel mix, allowing to reach reduction of harmful emissions. However the grown poor mix not only reduced dynamic characteristics in transitional modes, but also increased burning temperature that resulted in need of additional cooling. With air cooling the temperature of combustion of a fuel mix is very essential to engines. Some heard, and probably and faced that replacement of a regular exhaust system by an exhaust with low resistance, led to an engine overheat. The reason of it in emergence of the grown poor fuel mix.
Now a couple of words about reliability. The in itself carburetor is rather simple and practically doesn't demand adjustments in use. If there is a fuel filter and you use qualitative gasoline, the carburetor works smoothly. The system of an injector comprises much more components, such as the pump creating pressure, sensors on an entrance and a final path, the electronic block, operating work of a nozzle. Anyway, but over time, any knots can fail. Even if the got littered carburetor allows to reach to garage, refusal of one of knots of an injector leaves us on a roadside.
Use of the carburetor or injector will give almost identical maximum moshchnostny characteristics of engines. But those who got used to feel capacity and a torque as reaction to turn of the handle of gas, instead of in the form of figures on paper, will see at once a difference. The engine with the carburetor sharper and sympathetic on opening of an air zaslonka. The injector smoothes characteristics and does it to smoother. The electronic control unit remembering need to create grown poor mix simply steals capacity in transitional modes. Exactly thanks to injector application, and its function of smoothings, began possible to increase to volume of engines of stokovy motorcycles (Japanese to 2 liters), without effort change on the coupling handle.
Some councils.
Those who wants to receive the sharp and priyemisty engine can use the carburetor. Those to whom has the luck to receive the engine with an injector, can improve its characteristics having changed the engine management program. As it is necessary to remember that at replacement of a stokovy exhaust system on афтемаркет, you should think of change of settings of the carburetor or an injector.
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Good article, thanks.
For some reason the author doesn't write that on the injector motor any algorithm of management toplivopodachy, and not just "zarezanno-ecological", and also flexible adaptation to quality of fuel, climate and other conditions can be easily realized. Unlike carburetor where any adaptation and the unique algorithm is sewn rigidly up in a carburetor design, and this design strongly narrows a class of algorithms.
Yes the carburetor is a last century, now injection system new steers the wheel. The main thing gasoline qualitative to fill in. I am admissible 98 only I fill in.
the carburetor steered the wheel steers the wheel and will steer the wheel, and your operation of a car likely villages pressed gas got out and пох as there everything works with IMHO