Is a fine spray through which fuel is injected into an engine?
Injectors. The injectors through which the fuel is sprayed are screwed, nozzle-first, into either the inlet manifold or the cylinder head and are angled so that the spray of fuel is fired towards the inlet valve . The injectors are one of two types, depending on the injection system.
What is fuel spray?
The fuel spray atomizes into droplets, vaporizes, and mixes with air. The process of fuel spray penetration and droplet formation can be described by jet penetration models. In-cylinder mixing of fuel and air can be further enhanced by measures downstream or upstream of the lift-off length.
Which of the following is not the function of the fuel injection system?
Which of the following is not the function of the fuel injection system? Explanation: The functions of the fuel injection system are to filter the fuel, to time the fuel injection, to break up the fuel into small particles. 10. The cold start injector provides a lean air-fuel ratio.
What is fuel spray nozzle?
A fuel spray nozzle comprises a fuel passage (1) having at least one inlet and at least one outlet. The outlet is configured for accelerating fuel exiting the fuel passage into a jet. An air passage may be arranged axially within the annular array of fuel passage outlets.
How energy efficient is gasoline?
Sadly, even with regular car maintenance such as a tune-up or an oil change, today’s gasoline engines are only around 30 to 35 percent efficient, which means roughly 65 cents out of every dollar you spend on gas goes to waste.
What makes an engine efficient?
The efficiency of an engine is defined as ratio of the useful work done to the heat provided. This means the friction and other losses are subtracted from the work done by thermodynamic expansion. Thus an engine not delivering any work to the outside environment has zero efficiency.