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Since the invention of the internal combustion engine, engineers have been trying to find more effective ways to deliver fuel and air into the combustion engine. Considering the rising pollution in India, the country has moved from BS4 to BS6 emission standards, demanding more extensive mechanical changes in bikes and two-wheelers. Since they require accurate fuelling, many auto manufacturers have switched to fuel injection systems from carburettors.
A carburettor engine controls the ratio of air and fuel entering the engine. A fuel injection system is also responsible for doing the same. So, what is the difference between them? Simply put, a carburettor feeds the air-fuel mixture to the combustion chamber through mechanical components. The fuel injection system also does the same but with electronic sensors and electronic parts. In the following sections, we will briefly overview carburettor vs. fuel injection.
A carburettor is a device supplying a mixture of air and fuel to the bike’s spark-ignition engine. Its major components include a choke, idling, storage chamber, venturi-shaped restriction, accelerator pump, and a main jet. When the engine ignites, the choke controls the air intake and sends a fuel-rich charge to the cylinders. As the machine becomes warm, the choke opens gradually, and the main fuel jet gets activated and injects fuel into the inlet to drive the vehicle.
The primary purpose of a carburettor engine is to mix air and fuel in a particular ratio and send it to the bike's combustion chamber. It cuts off the airflow to the combustion chamber, mixes fuel, and feeds it to the engine. The carburettor airflow increases when you squeeze the bike's throttle, causing air suction and delivering the fuel to improve acceleration.
Technically, the carburettor is like a tube regulating fuel delivery to the engine to increase air velocity. The part restricting the fuel is called the venturi. As the air velocity increases, a low-pressure space builds up, facilitating the drawing of fuel from a jet near the venturi. It creates a mixture of air and fuel that burns in the combustion chamber to create a vacuum venturi effect.
Considering the rising pollution levels in India, new legislation instructed auto manufacturers to reduce their pollutant emissions and improve fuel efficiency. After several years of research, engineers developed the fuel injection system that helped accomplish these objectives. It uses new computer technologies to control air and fuel consumption without compromising power. Gradually, fuel injection systems replace all carbureted fuel systems in almost all gasoline engines.
The fuel injection system has a complex set of sensors and electronic parts that depend on a fuel pump to control the fuel flow in the combustion chamber. Located inside the bike’s fuel tank, this fuel pump supplies fuel to the combustion chamber through an ECU (Electronic Control Unit). It is like an electric brain that constantly regulates and calculates the air-fuel mixture to deliver a perfect concoction to the engine.
The ECU calculates the ideal mixture requirement based on several parameters like the engine speed, throttle position, load, engine temperature, etc. The fuel injection system has a nozzle that goes right into the cylinder chamber. The ECU instructs the injection system to send a controlled amount of fuel to the engine, enabling the most effective combustion mode.
Let’s look at the key difference between carburettor and fuel injection:
| Parameter | Fuel Injection | Carburettor |
| Inception | A newer innovation, first used in petrol engines in 1925 | First created in automobiles in 1826 |
| Working | Works electronically using an ECU | Works manually based on the rider’s discretion and driving skills |
| Fuel Injection | Fuel injection depends on the load condition in the engine | No monitoring of the fuel-air ratio |
| Fuel Control | The injector valve opens and closes several times per second to control the fuel injection. | The air entering the venture determines the fuel amount that the jet has to push. |
| Mileage and Power | Offers greater mileage with a higher power output | Ensures smooth running with a better horsepower |
| Installation | Complicated installation due to a complex fuel injection system and electronic components | Simple installation due to manual working and operation |
| Versatility | It can be used in both petrol and diesel vehicles | It cannot be used in diesel vehicles |
Buying a two-wheeler with a carburettor or fuel injection using bike finance from Hero FinCorp has several benefits. Here are a few:
Hero FinCorp is one of the most trusted NBFCs offering bike finance for both carburettor and fuel injection Hero bikes. Once you decide between carburettor vs. fuel injection in bikes, follow these steps to apply for a two-wheeler loan online:
Note: Hero FinCorp Bike Loans are exclusively available for Hero MotoCorp two-wheelers only. For bikes of other brands, you can get Hero FinCorp's Personal Loans with competitive interest rates and a flexible repayment tenure.
1. Are carburettors hard to maintain?
A carburettor is easier to maintain due to mechanical parts that are cheaper and easily available. Fuel injection systems have more complex parts not everyone can repair. However, they are less prone to damage and need less frequent repairs.
2. Which fuel injection is better?
There are different types of fuel injection systems, including single-point, multi-point, sequential, and direct. Direct fuel injection is better than others as it feeds fuel directly to the cylinders.
3. What produces more power, carburettor or fuel injection?
Fuel injection gives a higher power output with greater mileage.
4. Which one is the best, fuel injection or carburettor?
Fuel injection is better due to lower pollution and higher fuel efficiency. However, both have pros and cons and choosing one between them is a complex decision.
5. Do carburetted engines last longer?
A carburettor engine has a lower life expectancy than a fuel injection. Its several mechanical parts are prone to high wear and tear. Fuel injection systems have a cleaner mechanism that makes them last longer.
Disclaimer: The information provided in this blog post is intended for informational purposes only. The content is based on research and opinions available at the time of writing. While we strive to ensure accuracy, we do not claim to be exhaustive or definitive. Readers are advised to independently verify any details mentioned here, such as specifications, features, and availability, before making any purchasing decisions. Hero FinCorp does not take responsibility for any discrepancies, inaccuracies, or changes that may occur after the publication of this blog. The choice to rely on the information presented herein is at the reader's discretion, and we recommend consulting official sources and experts for the most up-to-date and accurate information about the products.
The act of paying out money for any kind of transaction is known as disbursement. From a lending perspective this usual implies the transfer of the loan amount to the borrower. It may cover paying to operate a business, dividend payments, cash outflow etc. So if disbursements are more than revenues, then cash flow of an entity is negative, and may indicate possible insolvency.
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