But generally speaking, carburetors traditionally have had the issues listed above. Computer-controlled, electronic fuel injection systems consist of a computer, an oxygen sensor, a set of fuel injectors, a fuel pressure regulator and an electric fuel pump. The oxygen sensor has the ability to generate voltage from 0 to 1, millivolts. Anything over millivolts is a rich mixture and anything below millivolts is a lean mixture, whereas millibolts is "just right".
This is called the stoichiometric ratio and is what the catalytic converter needs to perform its job at peak efficiency. What does the computer do to keep the ratios at theirn best? The computer does this by extending or shortening the length of time fuel injectors are held open. If the computer sees a voltage reading above the millivolts remember, rich mixture it will shorten the time injectors are held open to again get back to the millivolts.
The questions that were presented at the beginning of this article can be explained now that we know this information. Carburetors have no mechanical ability to correct lean or rich fuel mixtures.
If air leaks develop in vacuum lines, there will be excessive heat in the combustion chamber too much air makes it hotter. This excessive heat can damage or melt spark plug electrodes, burn valves and take the tension out of piston rings, resulting in excess oil consumption and a shorter engine life. If a rich mixture is present, possibly due to carburetor float problems or a sticking choke, you'll get poor fuel mileage, bad emissions, and carbon build up on spark plugs and pistons.
This will shorten spark plug life and raise the compression, causing the engine to require higher octane fuel to prevent pre-ignition problems. This is the main reason spark plugs last longer, valves are not burned and piston rings do not lose their tension resulting in shorter engine life.
Some direct fuel injection systems co-exist with port fuel injection systems. While the carburetor may have been around for over a century, fuel injection is a clearly superior alternative, delivering better power, fuel economy and lower emissions. For the modern driver, this is all you could ask for. Photo courtesy of Wikimedia Commons. Know How. Ben has been taking things apart since he was 5, and putting them back together again since he was 8.
Now, he writes on automotive topics across the web and around the world, including new automotive technology, transportation legislation, emissions, fuel economy and auto repair. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Do some more research on the inventor of carburettor. Read the Wikipedia article on Donat Banki who actually invented the carburettor. Hi Samrajit, Doing half research is harmful, well the carburettor was first invented by Samuel Morey in the year It was Samuel Morey who got the first patent to run this amazing device for a petroleum engine.
The said Donat Banki invented the carburettor for the stationary engine in the year Stay Pinned! This site uses Akismet to reduce spam. Learn how your comment data is processed. Sign in. Log into your account.
Forgot your password? Create an account. Sign up. Password recovery. Recover your password. Friday, November 12, Get help. The GoMechanic Blog. How does Carburetor work? How does Fuel Injection work? Carburetor Vs Fuel Injection Versatility The carburettor was phased out the automotive industry by the s, with fuel injection taking place and gaining prominence. Performance A fuel injection system with an electronically controlled fuel induction can constantly tweak the fuel delivery to the cylinders delivering better performance.
Fuel Economy A fuel injection system precisely delivers fuel in the right amount and can tweak it according to several parameters resulting is less fuel wastage and better fuel efficiency. Maintenance The only parameter where a carburettor trumps over fuel injection. How to extract the most life out of your car battery?
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