3279847
Injector
Cummins®

Introduction

The Cummins 3279847 Fuel Injector is a component designed for use in commercial trucks, specifically engineered to enhance the efficiency and performance of Cummins engines. This fuel injector is integral to the operation of these vehicles, ensuring that fuel is delivered to the engine in a precise and controlled manner, which is vital for optimal engine function.

Basic Concepts of Fuel Injectors

A fuel injector is a device that sprays fuel into an engine’s combustion chamber. It operates by receiving pressurized fuel from the fuel system and atomizing it into a fine mist upon activation. This process is governed by the engine’s electronic control unit (ECU), which determines the timing and duration of fuel delivery based on various engine parameters such as load, speed, and temperature. Fuel injection technology allows for more efficient combustion, better fuel economy, and lower emissions compared to traditional carburetor systems ¹.

Role of the 3279847 Fuel Injector in Truck Operation

The 3279847 Fuel Injector plays a specific role in the operation of commercial trucks by ensuring that fuel is delivered to the engine cylinders in a highly atomized state. This precise fuel delivery contributes to the engine’s performance and efficiency by promoting complete combustion. The injector’s design allows it to withstand the high pressures and temperatures within the engine, ensuring reliable operation under various driving conditions.

Key Features of the 3279847 Fuel Injector

The 3279847 Fuel Injector is characterized by several key features that enhance its performance and durability. These include precision engineering that ensures accurate fuel delivery, robust construction to withstand the harsh operating environment of a commercial truck engine, and compatibility with Cummins engines, which guarantees seamless integration and optimal function within the engine system.

Benefits of Using the 3279847 Fuel Injector

Utilizing the 3279847 Fuel Injector in commercial trucks offers several advantages. It contributes to improved fuel efficiency by ensuring that fuel is used more effectively during combustion. This results in enhanced engine performance, allowing trucks to operate more powerfully and smoothly. Additionally, the precise fuel delivery helps in reducing emissions, making the vehicle more environmentally friendly ².

Troubleshooting Common Issues with Fuel Injectors

When dealing with fuel injectors, it is important to be aware of common issues that may arise. Symptoms such as rough idling, decreased engine performance, or increased fuel consumption can indicate problems with the fuel injector. Troubleshooting may involve checking for clogged injectors, inspecting the fuel system for leaks, or assessing the electrical connections to the injector. Addressing these issues promptly can help maintain the engine’s efficiency and longevity.

Maintenance Tips for Fuel Injectors

To ensure the optimal performance and longevity of fuel injectors, regular maintenance is recommended. This includes periodic cleaning to remove any deposits that may accumulate, inspecting the injectors for signs of wear or damage, and following the manufacturer’s guidelines for replacement schedules. Proper maintenance helps in preventing issues and ensures that the fuel injectors continue to operate efficiently.

Cummins Corporation Overview

Cummins Corporation is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and related technologies. With a history spanning over a century, Cummins has established a strong reputation in the commercial truck industry for producing reliable and high-performance engines. The company’s commitment to innovation and quality has made it a preferred choice for commercial vehicle manufacturers and operators worldwide ³.

Cummins Fuel Injector 3279847 Compatibility

The Cummins Fuel Injector part number 3279847 is designed to integrate seamlessly with various engine models, ensuring optimal performance and reliability. This part is engineered to meet the stringent demands of modern diesel engines, providing precise fuel delivery and enhancing overall engine efficiency.

K19 Engine Group

The Cummins Fuel Injector 3279847 is compatible with the K19 engine series, which includes a range of industrial and commercial diesel engines. These engines are known for their robust construction and high performance, making them suitable for a variety of applications, from construction equipment to agricultural machinery.

The injector’s design ensures that it fits perfectly within the K19 engine’s fuel system, allowing for efficient fuel atomization and combustion. This compatibility is crucial for maintaining the engine’s power output and fuel economy, ensuring that the K19 engines continue to deliver reliable performance under various operating conditions.

By integrating the Cummins Fuel Injector 3279847 into the K19 engine series, users can expect improved fuel efficiency, reduced emissions, and enhanced engine longevity. This compatibility underscores Cummins’ commitment to providing high-quality components that enhance the performance and reliability of their engines.

Role of Part 3279847 Fuel Injector in Engine Systems

The part 3279847 Fuel Injector is integral to the efficient operation of engine systems by ensuring precise fuel delivery. This component works in concert with several other parts to optimize engine performance.

Integration with Engine Control Unit (ECU)

The Fuel Injector communicates with the Engine Control Unit (ECU) to regulate the amount of fuel sprayed into the combustion chamber. The ECU monitors various parameters such as engine load, RPM, and air-fuel ratio to determine the optimal fuel quantity. The injector then atomizes the fuel, creating a fine mist that enhances combustion efficiency.

Interaction with the Air Intake System

An efficient air intake system is essential for the proper functioning of the Fuel Injector. The air filter cleans incoming air, ensuring that only clean air mixes with the fuel. The mass airflow sensor (MAF) measures the amount of air entering the engine, providing data to the ECU to adjust fuel delivery accordingly. The Fuel Injector must precisely match the air volume with the correct fuel amount to maintain an optimal air-fuel ratio.

Coordination with the Ignition System

The Fuel Injector must synchronize with the ignition system to ensure that the fuel-air mixture ignites at the right moment. The ignition coil generates a high-voltage spark at the spark plug, igniting the mixture. The timing of this spark is critical, and the Fuel Injector must deliver fuel just before this moment to ensure complete combustion.

Role in Exhaust Gas Recirculation (EGR) System

In engines equipped with an Exhaust Gas Recirculation (EGR) system, the Fuel Injector plays a part in reducing emissions. The EGR valve recirculates a portion of the exhaust gas back into the intake manifold. The Fuel Injector must adjust fuel delivery to compensate for the diluted air-fuel mixture, ensuring that the engine continues to run efficiently while reducing nitrogen oxides (NOx) emissions.

Contribution to Turbocharging and Supercharging Systems

In turbocharged or supercharged engines, the Fuel Injector must handle increased air volume. The turbocharger or supercharger compresses incoming air, allowing more oxygen to enter the combustion chamber. The Fuel Injector must deliver a corresponding increase in fuel to maintain the correct air-fuel ratio, enhancing both power and efficiency.

Impact on Fuel Rail and Injector Pulse Width

The Fuel Injector is part of the fuel rail system, which maintains consistent fuel pressure. The injector pulse width—the duration for which the injector remains open—is crucial for fuel delivery. The ECU adjusts this pulse width based on real-time data, ensuring that the Fuel Injector delivers the exact amount of fuel needed for optimal performance.

Conclusion

By understanding how the part 3279847 Fuel Injector interacts with these components, engineers and mechanics can better diagnose issues, optimize engine performance, and ensure reliable operation.