Apr 05, 2019 a fuel injection sprays calculated spurts of fuel directly into the combustion chamber. Pdf fuel efficiency and emission characteristics are two main concerns. Electronic fuel injection uses signals from several sensors located on the engine. An electronic fuel injection system efi is a more complicated fuel system than a carbureted system. Fuel injection does allow for more accurate control of the air fuel ratio, and in doing so, allows a bike to run cleaner and keep a catalytic converter on board. The atomic throttle body injection system has been designed to make installation and initial setup the easiest way to convert your classic car to efi. Small particles and impurities in the fuel can be a little more problematic with efi. May 29, 2017 hey there mrkrish onthego here fuel injection vs carburetor explained hope you like the video my gears. It has been on larger zero turn mowers for some time now and will slowly trickle down to the smaller machines such as selfpropelled and push mowers in time. Stand alone means that the system only needs 12 volt ignition and 12 volt battery feed to make the system run. Basically, during combustion the piston compresses the air fuel mixture in preparation for ignition which is know as a power.
Electronic fuel injection system for a 2stroke allterrain. Fuel injection considerations one other item to consider is the fuel pump, as well as its relationship with the fuel pressure regulator. A fuel injected system is a computer controlled fuel delivery system. Many believe that performance is best with a carburetor while others insist that the only way to go is with fuel injection gasoline. To explain the basic working of a carburetor, think of it as a tube that feeds an air fuel mixture into the cylinder from one end, with an air filter. Basic streetstrip carbureted equipment costs far less than efi parts, but once you get into. 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. Pdf influence of fuel injector position of portfuel injection retrofit. Carburetors vs fuel injection muscle mustangs and fast.
Ford mustang small block ford with standard deck 1966, ezefi 2. The main difference between carburetor and fuel injection system carburetorzfuel 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 systemzthe fuel speed at the point of delivery is greater than the air speed to atomize the fuel. The fuel tank contains a fuel gauge sending unit, a filler tube and a fuel pump. May 28, 20 for the best answers, search on this site fuel injection is far better than carburetor. Sep 24, 2011 we have never lost a customer at least permanently to fuel injection, either mechanical or electronic. May 06, 2008 fuel injection meters the fuel much more precisely than the carburetor. This modern technology and device literary enhanced the modern motorcycle engine capability and efficiency. The carburetor meters fuel only by mechanical linkage and engine manifold vacuum.
Direct fuel injection, in particular, tends to be much higher in cost than common port fuel injection. May 16, 2016 the injectors are capable of consistently breaking the fuel into tiny droplets that flash to vapor and distribute themselves evenly in the individual intake ports. But now that you know a little more about the difference between the two systems, flying both types, and troubleshooting their problems, should be a little more simple. Carbs or fuel injection american snowmobiler magazine. A fuel injection system is designed and calibrated specifically for the types of fuel it will handle.
An iterative learning control feedback circuit controller is utilized to provide the optimum fuel injection rate at all times. Fuel tank the fuel tank contains a fuel gauge sending unit, a filler tube and a fuel pump. Fuel injection does allow for more accurate control of the airfuel ratio, and in doing so, allows a bike to run cleaner and keep a catalytic converter on board. Hp efi air fuel ratio looking at the air fuel ratio curves generated by the carburetor and fuel injection, we see that the carb was initially lean, then transitioned to ideal. Msd atomic efi fuel injection system complete master kit w.
An efi system relies on injectors and a fuel pump to control fuel flow and to feed the engine. Sep 10, 2012 carburettors and electronic fuel injection systems are devices used to mix fuel and air with a proper ratio and control the fuel air mixture given to the engine. Speaking from an outsider of the world of high end engine build prospective so i will feel no ill will at being corrected. The atomic efi master kit is a complete kit designed for anyone planning to convert from a carburetor to fuel injection. The research is presented to get the number of comparison for torque, power, and specific fuel consumption between conventional engine. Furthermore it has some awesome advantages and also have few disadvantages. The air intake is measured by the air sensor location inside.
Electronic fuel injection tech we put dynatek racings new fuel injection to the test against a classic carburetor. A fuel injection sprays calculated spurts of fuel directly into the combustion chamber. If you require a fuel system component at the time of your injector service, please let us know and we will provide you with a price quote and availability. I think that youd see a lot more mechanical fuel injection in unlimited class racing if that was what made the most power. Hey there mrkrish onthego here fuel injection vs carburetor explained hope you like the video my gears. For the best answers, search on this site fuel injection is far better than carburetor. Jun 30, 2016 electronic fuel injection vs carburettors 1.
The carburetor was first introduced in the late 19th century and the fuel injection methods came. The direct fuel injection system design incorporates a fuel injection assembly to deliver continuously variable injection flow rate by controlling the injector needle position. This system was designed specifically for four or two stoke engines. An iterative learning control feedback circuit controller is utilized. In contrast, a carbureted system requires only a pump, a feed line, a carburetor, and the manifold. The main benefits to using direct injection is that the amount of fuel and air can be perfectly released and then injected into the cylinder according to the. We all know about suzukis cracked engine case problem in 08, and im one of the guys that purchased a updated 08 its an 08 chassis, with a factory installed 09 engine. 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. This discussion has probably existed as long as there have been combustion engines around, and both systems are still in widespread use.
The afc system did have a computer of sorts this is the fuel injection system that people claimed cb radios affected the fuel injection trigger points looked just like a set of nonadjustable ignition points,they seldom were a problem. Today, it has been superseded by gasoline injection systems which thanks to. Carburetor vs fuel injection pros and cons youtube. Fuel injection vs carburetor what motorcycle should i. Fuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of an injector all diesel engines use fuel injection by design. Carbureted and fuel injected engines have their pros and cons. The fuel pump pulls fuel from the gas tank, pressurizes it and forces it. Gas engines can use gasoline direct injection, where the fuel is directly delivered into the combustion chamber, or indirect injection where the fuel is mixed with air before the intake. You must select a pump that will flow the required amount at the planned pressure. If you want reliability, with no electronic crap to worry about, maybe you prefer a carb. Emissions and fuel efficiency when it comes to fuel efficiency, injection systems simply cant be beat. Some members have suggested avoiding the optional fuel injection on devilles and fleetwoods, and favoring models with carburetors. Based on these signals, a computer decides the best fuel air mixture for the engine. Read on to find out the difference, pros, cons, advantages and advantages and maintenance.
You can still buy many machines with a carburetor on them and that will last for some time but not forever. Basically, during combustion the piston compresses the airfuel mixture in preparation for ignition which is know as a power. Nov 06, 2016 a carburetor is dependent upon the velocity of air entering the venture to create a good airfuel mix to feed the engine, and serves to maintain the fuel circuits which pump the petrol and although the majority of current highperformance bikes have switched to fuel injection, there are still plenty of motorcycles fitted with carburetor. The fuel injection nozzle is provided directly in the combustion chamber. Mar 31, 2016 comparison of royal enfield efi vs royal enfield carburetor. After my research i have discovered that the advantages are heavily directed towards the fuel injection. Caution to reduce the chance of personal injury andor property damage, the following instructions must be carefully observed. 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. Various posts have referred to difficulties with fuel injection on late70s cadillacs. Never has so much power been placed in one compact package. 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. Better starting, more power, better throttle response, better fuel economy and you wont have plugged up carburetor jets to deal with anymore. Should i buy a fuel injected or carburetor riding lawn. Oct 05, 2017 fuel injection is not going away and the more the epa pushes for more air quality standards on small engines, the faster implementation will roll out.
I know fuel injection is supposed to be more reliable, but how about performance. Why fuel injection has replaced carburetors on motorcycles. 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. Emissions are a major factor in modern motoring and is likely to be even more critical in the future. Increase fuel efficiency with direct fuel injection system design. 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 injection uses many different sensors to detect things like weather changes, altitude, barometric pressure i think is what thats called, and throttle position to deliever the correct amount of fuel to the cylinders as needed to maximize power and economy.
May 01, 2017 emissions and fuel efficiency when it comes to fuel efficiency, injection systems simply cant be beat. Aug 20, 2010 a fuel injected system is a computer controlled fuel delivery system. Carburetor vs fuel injection motorcycle fuel systems. However, when comparing carburetors vs fuel injection, it is important to note the two function differently. It may be harder to kick, but not by much and when its warm its a one kick. Aug 06, 2009 efi is just a more precise fuel air ratio and delivery system at all rpm ranges. The ecu reads various sensors located on the vehicle and makes the determination of how much fuel to allow the engine to have. The fuel is forced through a small nozzle under pressure in the combustion chamber where it ignites and produces the power stroke. Increase fuel efficiency with direct fuel injection system. I quads with both, and i prefer the fi myself, but i am frightened of the day that it start giving me trouble. Should i buy a fuel injected or carburetor riding lawn mower. One of the first recorded instances where one system was. Jan 27, 2012 port fuel injection is the most commonly used and direct fuel injection is the latest developed fuel injection system.
Efi or electronic fuel injection has been around since the 1980s on automobiles and it has finally been installed on the riding mowers. Carburetor vs fuel injection summit racing 101 youtube. Fuel injection systems are also able to operate normally regardless of orientation, whereas carburetors with floats are not able to operate upside down or in microgravity, such as that encountered on airplanes. With aftermarket tuning software, it also allows much finer adjustments of the fuel map. Couple the precision of the air fuel measurement along with timed, pressurized injection of the fuel directly into the intake port, and you have a superior system. An efi system is basically developed for the control of injection timing and fuel.
Fuel injection meters the fuel much more precisely than the carburetor. To view the carburetor version is the cub cadet xt1 lt46. Subscribe to get the latest videos, articles, and quizzes that make you a smarter, safer pilot. Your motorcycle is either being fed fuel through a carburetor with jets, or via a throttle body with an injector. Between the years 1973 and 1995, the highly reliable, mechanical multipoint injection system kjetronic was installed as original equipment in seriesproduction vehicles. My guess would be that if a fuel injection specialist were hired to select and tune a system and a carburetion specialist were hired to select and tune a system. This is primarily because injections systems can be more precise and theyre more easily controlled than the carburetor. Both present in internal combustion engines, carburetors and fuel injection systems accomplish similar tasks. But for just plain badass looks, its way cooler that a 4500 on a victor. As a rule, as the pressure goes up, the flow capacity goes down.
A carburetor is dependent upon the velocity of air entering the venture to create a good airfuel mix to feed the engine, and serves to maintain the fuel circuits which pump the petrol and although the majority of current highperformance bikes have switched to fuel injection, there are still plenty of motorcycles fitted with carburetor. Meanstreet offers an onboard ecu and fuel pressure regulator to bring. Electronic fuel injection system for a 2stroke all. Can you do more enhancements to a carburetor therefore have an advantage over the fuel injected motor.
Eventually fuel injection became much more reliable than carburetors. It has become the primary fuel delivery system used in automotive engines, having replaced carburetors during the 1980s. Carburetor or fuel injection harley davidson forums. We only use the 5 sensors so this is a very simple system, and the best of all the fuel injection system installed on your vehicle runs completely closed loop once warmed up 14. I have owned both, but never been able to compare apples to apples. This product is made of highquality materials to serve you for years to come. Efi complete tbi fuel injection kit for stock small block.
Most fuel injection systems are for gasoline or diesel applications. The relative merits of carbs or fuel injection are again of interest to us snowmobilers, as tighter emission requirements may be looming on the horizon. My 06 1200 custom is supposed to be the last sportster with a carburetor. 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. Difference between carburetor and fuel injection compare. The only down side and its not really a downside is efi requires a better fuel filtration system than a carb engine. Carburetor vs fuel injection is debated as fuel delivery systems. Marren fuel injection stocks a large inventory of fuel injection components, including fuel pumps, sensors, etc. Fuel injection uses many different sensors to detect things like weather changes, altitude, barometric pressure i think is what thats called, and throttle position to deliever the correct amount of fuel to the cylinders as needed to maximize power and economy in the operating. So fuel injection system is an hitech and complex fuel feeding system. In fact, that very reason is a large part of why injection systems started replacing carburetors during the 1970s. Carburettors and electronic fuel injection systems are devices used to mix fuel and air with a proper ratio and control the fuel air mixture given to the engine.