Throttle body injection is the most simple type of efi and the closest to carburetion in operation. Electronic fuel injection uses signals from several sensors located on the engine. May 29, 2017 hey there mrkrish onthego here fuel injection vs carburetor explained hope you like the video my gears. It got hard to ignore fuel injection around that time, anywho. Sumped tanks normally accept aluminum an fittings and braided stainless steel fuel lines to carry the fuel to the carburetor. To carburate or carburet and thus carburation or carburetion, respectively means to mix the air and fuel or to.
Fuel injected systems work a little differently that carbureted engines, because there is no air mixed with the fuel in the metering system. Fuel injectors are calibrated to force the same amount of fuel into each cylinder. Once you try to restart the hot engine, the cylinders initially may not receive the right amount of fuel in the. The combustion of gas releases energy into the pistons and combustion. Which offers the best performance, carburetor or fuel injection, is highly debated question among car enthusiasts. My friend recommended me to remove the fuel injection and replace it with a carburetor. Posa style carburetors trace their history back to the late 60s and early 70s. Additionally, the annularflow boosters can also potentially offer improved fuel mileage in some applications. There are two different versions of fuel injection port fuel injection and direct injection. To view the carburetor version is the cub cadet xt1 lt46. Jun 17, 2018 generally speaking, this improved fuel atomization eliminates flat spots when the carburetor transitions from idle to partthrottle, for better performance at the lower end of the rev range. I am deciding between getting a 2010 vino 50 which has a carburetor and a 20 vino 50 which is fuel injected. You must select a pump that will flow the required amount at the planned pressure. The fuel injection system used for these tests is a timed, port injection system with speeddensity control.
The carburetor was invented by karl benz founder of mercedes. A carburetor is a part of a combustion engine in which the fuel is converted into vapor and mixed. Our framemount inline pump kit comes with the fuel. Electronic fuel injection tech we put dynatek racings new fuel injection to the test against a classic carburetor. In either case,the power valve selected should be 12 the intake manifold. A stock fuel injected 302 from 8693 will run and run and run. Tpi its not terribly surprising that the stock l98 tpi system produced more lowspeed power than the conventional carb and dualplane intake. If your bike has carburetors you will end up working on them. Fuel injection in nascar reflects the technology used by production toyota, chevrolet, and ford vehicles on the road today. Carbs tend to do 1 or 2 things very very well, meaning if you want an all out race motor or a constant rpm boat motor, its very easy to get it to do that very very very well. However, the maintenance costs of a carburetor engine are generally higher than for one with fuel injection so it can all even out in the long run. The process of preparing this mixture is called carburetion. Dec 28, 2015 im worried if im making a mistake by getting the carbed version instead of ordering a 2016 with fuel injection. In most cases, a highoutput fuel pump is needed to meet the demands of the system.
Fuel injected motorcycles are fast taking over carbureted ones, which until the beginning of the new millennium ruled the roost. Aug 16, 2002 i believe the ultimate combo in an old car is the old car with modern drivetrainelectronics fuel injection. First and foremost, fuel injection on fourstroke motocross bikes is a fait accompli. Its easy to use, o maintain, and cheaper in buying and repairing in later time. Small particles and impurities in the fuel can be a little more problematic with efi. Both fuel and air are carried throughout the entire intake tract. This has been a project that i have had in mind for a few years thinking that i would be a great way to get the best out of a bike. Emissions from carbureted and timed port fuel injected. Today, lets glimpse into the world of fuel delivery. Thats because of the main advantage that injection has over carburetion. Jan 27, 2012 the carburetor is currently much less expensive than the electronic fuel injection systems.
Based on these signals, a computer decides the best fuel air mixture for the engine. Unfortunately, a lot can be lost in terms of this fuel system. I was wondering if anyone had any insights on the differences between the two. The fuel injection nozzle is provided directly in the combustion chamber. Difference between carburetor and fuel injection compare. Unlike carburetors, a fuel injection system is comprised of a complex set of electronics and sensors. It is sometimes colloquially shortened to carb in the uk and north america or carby in australia.
Why fuel injection has replaced carburetors on motorcycles. To start any conversation of the carburetor vs fuel injection, one has to start at the very beginning of the internal combustion engine. A mixture of fuel and air is ignited by a spark plug in order to create a small explosion that moves the. An electronic fuel injection system efi is a more complicated fuel system. Carburetors vs fuel injection muscle mustangs and fast.
The fuel flow, sparkadvance, and other functions are determined in most part from the critical values of engine speed and intake manifold air density. Electronic fuel injection efi engine system of toyota kijang series. Starting in carbureted engines, the fuel air mixture meets in the carburetor. Fuel injection fundamentals introductory notes density pressure vacuum the proflo system uses the speeddensity sd method of control. Learn more about carburetors vs fuel injection in this cjs article. Due to the less of findings and production of a fuel injection system. The carburetor type motorcyle nearly has the same milleage as the fuel injection one, good. Carburetor vs fuel injection in an internal combustion engine, the fuel air ratio of the fuel air mixture has significant influence on the performan. Converting 1977 vw campmobile to carburetor maintenance. In fuel chemistry, the term has the more specific meaning of increasing the carbon and therefore energy content of a fluid by mixing it with a volatile hydrocarbon.
Ive got a 1977 vw campmobile that hasnt run in over 6 years due to malicious acts against my volkswagen from some local kids. The yamaha yz250f was the last holdout and they quit holding out. Carburetor chokes can be either manual or electric. It has become the primary fuel delivery system used in gasoline. Better starting, more power, better throttle response, better fuel economy and you wont have plugged up carburetor jets to deal with anymore.
In road test, an engine supplied by a carburetor does have more power and precision. Carburetor or fuel injection my question is about what type of induction would get me the best fuel economy, carbureted or fuel injection, im looking for maximum fuel economy not performance. Port fuel injection is the most widely utilized form of injection today. A pressure carburetor is a type of fuel metering system manufactured by the bendix corporation for piston aircraft engines, starting in the 1940s. Discussion in lawn mowing started by clay duncan, apr 27, 20. The air intake is measured by the air sensor location inside. The mixture then goes to each cylinder through the air intakes. Although most small engines use the carburetor system for its simplicity and cheap prices, and less maintenance costs, fuel injection is the perfect choice for the modern vehicles for better performance, lower emissions, and fuel economy. Blogs car info our show mechanics files vehicle donation.
Probably one of the most controversial discussions among motorcycle enthusiasts is the difference between carbureted and fuel injected bikes, as each of them has its own avid supporters. The first fuelinjection system on a streetbike debuted in 1980, but for the most part, carbs were how motorcycles mixed air and fuel right up to the turn of the century. Oct 05, 2017 better starting, more power, better throttle response, better fuel economy and you wont have plugged up carburetor jets to deal with anymore. There is a pressure pump which pressurizes the fuel which allows it to be atomized and hence inside the combustion chamber, the spray is in the form of a mist which allows for complete and cleaner combustion. Edelbrock designed the avs2 carb to blend the price and practicality of carburetion with the response and crispness of efi. Fuel injection systems are becoming more popular for those wanting the best performance from their engines.
Jun 23, 2015 check the fuel tank first,if it is full of crap and sediment,then you know it hasnt had proper care,then walk away from it,other than that,no need to worry about carbs,if it has had good care in the past,it should be fine,as others have stated,run nonethanol high octane gas in it,a good additive,and good oil,it should run issue free for many years,now thats not to say it wont ever give you. Which offers the best performance, carburetor or fuel injection, is highly. Also with injection you need a fuel pump high pressure, complete gas lines with a return. Which one gives better mileagefuel efficiency fuel.
It is recognized as an early type of throttlebody fuel injection and was developed to prevent fuel starvation during inverted flight. A servo regulator measures airflow entering the engine, and meters fuel accordingly for the proper mixture. In an internal combustion engine, the fuel air ratio of the fuel air mixture has significant influence on the performance of the engine, since it directly controls the power output of the engine. Fuel injection technology has been found to be one of the most important technical advances in stock automobiles since nascar was founded in 1947. Being the oldschool type, i only have fuel injection on the everyday drivers, so others can offer their input on that aspect of your build. Home technology mechanics difference between carburetor and fuel injection. May 06, 2008 fuel injection meters the fuel much more precisely than the carburetor.
The main difference between carburetor and fuel injection system carburetor zfuel is atomized by processes relying on the air speed greater than fuel speed at the fuel nozzle, zthe amount of fuel drawn into the engine depends upon the air velocity in the venturi fuel injection system zthe fuel speed at the point of delivery is greater than the. The first fuel injection system on a streetbike debuted in 1980, but for the most part, carbs were how motorcycles mixed air and fuel right up to the turn of the century. Electronic fuel injection system for a 2stroke all. Feb 21, 2014 first and foremost, fuel injection on fourstroke motocross bikes is a fait accompli. Fuel injection is the introduction of fuel in an internal combustion engine, most commonly. In carbureted engines, the fuelair mixture meets in the carburetor. Thats a load of crap, if you take good care of your bike the carbs may never need. Installation takes mechanical expertise, knowledge of your motorcycle and experience interpreting electrical wiring diagrams. The fuel injection system is computerized and works on a lot.
As a rule, as the pressure goes up, the flow capacity goes down. In the fuel injected engine, the fuel and air do not mix until they reach the cylinder. Should i buy a fuel injected or carburetor riding lawn. Then, set the car at the park or neutral for an automatic or manual car, respectively. Aug 20, 2010 probably one of the most controversial discussions among motorcycle enthusiasts is the difference between carbureted and fuel injected bikes, as each of them has its own avid supporters. While carburetion may still hold a small advantage in the smoothness of offtoon throttle transitions like getting back on the gas from a closed throttle in a corner, or when driving at a very low speed, particu. Fuel is injected above the throttle blades by one or more fuel injector nozzles. One of the first carburetors of this style was the lake injector. Incidentally, im thinking about it for a corvair engine 164ci. Dont confuse the word injector with fuel injection, as these series of carburetors are not a fuel injector or. It has become the primary fuel delivery system used in gasoline automotive engines, having almost completely replaced carburetors in the late 1980s. Fuel injection, because it can be more precisely controlled, results in more efficient use of fuel, reduced fuel consumption and fewer emissions, which is the main reason it began to replace the carburetor in the 1970s. Fuel injectionis a system for mixing fuel with air in an internal combustion engine.
The carburetor, a device which atomises the fuel and mixes it with air. Case injection pump breakdown free pdf file sharing. Your motorcycle is either being fed fuel through a carburetor with jets, or via a throttle body with an injector. The good motorcycle has best carburetor which gives good acceleration, strong engine to the bike. The carbed bike will suffer additional power loss because it cannot automatically adjust the air fuel mixture to compensate for the thinner air. The primary difference between carburetion and fuel injection is that fuel injection atomizes the fuel through a small nozzle under high pressure, while a carburetor relies on suction created by intake air accelerated through a venturi tube to draw the fuel into the airstream. July 15, 2014 mike aguilar drag racing, fuel delivery, general engine, hot rods, howto and tech tips, tech, tech tips 0. Carburetor vs fuel injection pros and cons youtube.
Nov 06, 2016 carburetor vs fuel injection which is best. Fuel injection or fi is the introduction of fuel in an internal combustion engine by the means of an injector known as fuel injector. Look forward to the conclusion of this post in the next few weeks, in the meantime check out a few of these links that will help you understand the fuel injection systems, air induction systems and ignition systems available for your classic car, muscle car, street or rat rod. Im finally in a position to overhaul the engine and would like to get rid of its now broken fuel injection system in favor of a carburetor. At least cars with carborator and manual shift will still start and run.
How to convert a carbed motorcycle to efi it still runs. For a layman, as the name suggest, fuel injection system injects fuel into the engine optimally such that only required fuel is used by the engine and thus gives out better fuel economy. If you go with a carb, just change the lower manifold and just go. Oct 01, 2014 look forward to the conclusion of this post in the next few weeks, in the meantime check out a few of these links that will help you understand the fuel injection systems, air induction systems and ignition systems available for your classic car, muscle car, street or rat rod. The only down side and its not really a downside is efi requires a better fuel filtration system than a carb engine. No fuel draining is necessary, and since the gasket sits above the fuel l evel, it can be reused without concern. Currently, no production automobile manufacturers use carburetors as a part of the fuel delivery system. The word carburetor comes from the french carbure meaning carbide. In this paper, we will explain various types of fuel injection system that are used most. Simply put, there is no competion whatsoever with a stock 60s70s v8 vs a v8 from a mustang from 8695, or even 95 up. On petrol engines, fuel injection replaced carburetors from the 1980s onward.
Perfomance between conventional engine carburetor system and. Installing a procharger f1a94 in search of 8second timeslips. These days motorcycle engines are getting so improved in terms of power delivery and fuel efficiency. Every bike in my garage thats a total of eight has a carburetor. A fuel injected bike can compensate for the lower air density and maintain an optimum fuel air ratio for whatever elevation its operating. What i noticed is that i had to use the clutch a lot to feather what felt to me to be a somewhat unrefined throttle response. In the manual we will outline the powerjection iii installation and use of the stage iii dashboard software. I dont believe drag racers in the 60s and 70s would have spent that much on mechanical fuel injection for a measly 10hp. When you park a fuel injected airplane after flying, fuel can vaporize in the injector lines. Should i buy a fuel injected or carburetor riding lawn mower. Fuel injectors are electronically controlled mechanical devices that are responsible for spraying injecting the right amount of fuel into the engine, so that a suitable air fuel mixture is created for optimal combustion.
The age old carburetors are slowly getting replaced by the newer fuel injection system. Carburetors are heavier than fuel injection systems. If i can smell unburned fuel, its got a carburetor. I can typically tell if a cars engine is carbureted or injected just by smelling the exhaust as the car passes me. And if you are a little sentimental, carburetors were the first fuel system designed. Fuel injection considerations one other item to consider is the fuel pump, as well as its relationship with the fuel pressure regulator. A carburetor uses the vacume of the intake stroke to draw air through the. To help our customers shop hasslefree, we have categorized our products. Perhaps not all the bikers know about the functionality of a carburetor on their motorcycle or has a very little interest in it. I think fuel injection took over because of emission control and you dont need the pump the carb thing to start a car. Introduction the primary difference between carburetors and fuel. Many believe that performance is best with a carburetor while others insist that the only way to go is with fuel injection gasoline. Efi or electronic fuel injection has been around since the 1980s on automobiles and it has finally been installed on the riding mowers.
I may change the tranny to a 700r4, dont know if it would help the fuel economy that much. Hi all, after some consideration about drz400sm carb choices pumper vs cv i decided to that i would like to give fuel injection a go. Carburetors model 4160 carburetor exploded view fuel injection throttle bodies fuel pumps. A carburetor american english or carburettor british english is a device that mixes air and fuel for internal combustion engines in the proper air fuel ratio for combustion. However, it is possible to obtain an efi kit and fuel pump from a motorcycle accessory outlet and convert a carbed motorcycle to efi.
The carburetor meters fuel only by mechanical linkage and engine manifold vacuum. Edelbrock electronic fuel injection installation and performance. The carburetor type motorcycle is always the number1 choice. Therefore, too much fuel is consumed, too many emissions are released, and optimal performance is not obtained. Dyno testing a holley double pumper vs custom stack injection. I got my class m last week and have so far ridden two motorcycles. Fuel flow from the injector nozzles is intermittent and timed to a fixed part of the engine cycle so that fuel delivery occurs only during a portion of the intake stroke when the air velocity is high. Speaking from an outsider of the world of high end engine build prospective so i will feel no ill will at being corrected. But then again, the battle between the two continues as to which one is the best. Learn fuel, target air fuel, and fuel table 11 introduction thank you for your purchase of the professional products powerjection iii fuel injection system. Even lower capacity motorcycle engines are also getting hitech technologies and features. I have 1 26 efi and 1 28efi they save on gas i have a 25 carb it likes it gas vs the efi. Shop for affordable electronic fuel injection systems developed using oemlevel components, walkthrough fitech fuel injection.
Crosscountry driving was 95% of the miles we put on it. Carburer means to combine with carbon compare also carburizing. Fuel injector vs carburetor gasoline, motor oils, concept. Plenty of go for any situation, but the primary focus was always optimum fuel economy, for me. This configuration provides little precision in metering of the air to fuel ratio.