3917835
Electronic Fuel Control Actuator
Cummins®

The Electronic Fuel Control Actuator (3917835) by Cummins is a component designed to regulate fuel delivery in commercial trucks. Its purpose is to enhance the precision of fuel injection, thereby contributing to the overall efficiency and performance of the engine. This actuator is significant in the operation of commercial trucks as it ensures optimal fuel delivery, which is essential for maintaining engine efficiency and reducing emissions.

Basic Concepts

Electronic fuel control actuators are integral to the fuel injection system of diesel engines. They function by adjusting the timing and amount of fuel injected into the engine’s combustion chamber. This precise control over fuel delivery contributes to improved engine performance, efficiency, and emissions control. The actuator receives signals from the engine control unit (ECU) to make real-time adjustments based on driving conditions and engine load ¹.

Role in Truck Operation

The 3917835 Electronic Fuel Control Actuator plays a pivotal role in the operation of commercial trucks by managing fuel delivery to the engine. It ensures that the correct amount of fuel is injected at the optimal time, which enhances engine efficiency and performance. Additionally, by precisely controlling fuel injection, the actuator contributes to emissions control, helping trucks meet regulatory standards for exhaust emissions ².

Key Features

The 3917835 Electronic Fuel Control Actuator is characterized by several key features that enhance its functionality and reliability. These include precision control capabilities, which allow for fine-tuning of fuel delivery; durability, ensuring long-term performance under demanding conditions; and compatibility with Cummins engines, making it a suitable choice for a wide range of commercial truck applications ³.

Benefits

Utilizing the 3917835 Electronic Fuel Control Actuator offers several benefits. It contributes to improved fuel efficiency by optimizing fuel delivery, which can lead to cost savings for fleet operators. Enhanced engine performance is another advantage, as the actuator ensures that the engine operates at peak efficiency. Additionally, by controlling fuel injection more precisely, the actuator helps reduce emissions, promoting environmental sustainability ⁴.

Troubleshooting and Maintenance

To ensure optimal performance and longevity of the 3917835 Electronic Fuel Control Actuator, regular maintenance and troubleshooting are recommended. Common issues may include electrical faults or mechanical wear. Maintenance tips include checking for proper electrical connections, ensuring the actuator is free from debris, and monitoring its performance through diagnostic tools. Addressing issues promptly can prevent more significant problems and extend the actuator’s lifespan ⁵.

Integration with Cummins Engines

The 3917835 Electronic Fuel Control Actuator is designed to integrate seamlessly with Cummins engines. Its compatibility with various engine models makes it a versatile component in Cummins’ fuel management system. The actuator works in conjunction with the engine’s ECU to optimize fuel delivery, demonstrating Cummins’ commitment to innovation and efficiency in diesel engine technology ⁶.

Technological Advancements

The 3917835 Electronic Fuel Control Actuator incorporates several technological advancements. These include electronic control systems that allow for precise adjustments to fuel delivery and precision engineering that ensures durability and reliability. These advancements contribute to the actuator’s ability to enhance engine performance and efficiency while reducing emissions ⁷.

Environmental Impact

The use of the 3917835 Electronic Fuel Control Actuator has a positive environmental impact. By optimizing fuel delivery and reducing emissions, it contributes to more sustainable transportation practices. This is particularly important in the commercial trucking industry, where emissions regulations are becoming increasingly stringent. The actuator’s role in emissions control demonstrates Cummins’ commitment to environmental responsibility ⁸.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes diesel and natural gas engines, as well as related technologies. With a history of innovation in the diesel engine industry, Cummins offers a wide range of products designed to meet the needs of various industries. The company’s commitment to innovation is evident in its development of advanced components like the 3917835 Electronic Fuel Control Actuator, which contribute to improved engine performance, efficiency, and environmental sustainability ⁹.

Compatibility with Specific Engine Models

The Cummins Electronic Fuel Control Actuator part number 3917835 is designed to work seamlessly with a range of Cummins engines, ensuring precise control over fuel delivery and engine performance. This actuator is integral to the electronic fuel control system, which is essential for maintaining optimal engine operation.

4B3.9 Engine Series

The 3917835 actuator is specifically engineered to fit the 4B3.9 engine. This engine model is known for its robust performance and reliability, often used in various industrial and heavy-duty applications. The actuator ensures that the 4B3.9 engine operates efficiently by regulating fuel flow according to the engine’s demands.

6B5.9 Engine Series

Similarly, the 3917835 actuator is compatible with the 6B5.9 engine. This engine variant is also widely used in heavy-duty applications, providing substantial power and durability. The actuator’s role in this engine is to maintain precise fuel control, which is essential for the engine’s performance and longevity.

Role of the Electronic Fuel Control Actuator in Engine Systems

The Electronic Fuel Control Actuator (part 3917835) is integral to the operation of the Electronic Engine Control System (EECS). This actuator is responsible for modulating the fuel delivery to the engine, ensuring that the air-fuel mixture is optimized for performance, efficiency, and emissions control.

Interaction with the Electronic Engine Control System

The EECS relies on the Electronic Fuel Control Actuator to execute precise adjustments to the fuel flow. The system continuously monitors various parameters such as engine load, throttle position, and air intake temperature. Based on these inputs, the EECS sends signals to the actuator to increase or decrease fuel delivery accordingly.

Coordination with Other Components

1. Throttle Body: The actuator works in tandem with the throttle body to maintain the correct air-fuel ratio. As the throttle position changes, the actuator adjusts fuel delivery to match the varying air intake.

2. Oxygen Sensors: Feedback from the oxygen sensors is vital for the EECS. These sensors measure the oxygen content in the exhaust gases, providing data that the EECS uses to fine-tune the actuator’s performance, ensuring optimal combustion.

3. Engine Control Unit (ECU): The ECU is the brain of the EECS, processing data from various sensors and sending commands to the actuator. The ECU’s algorithms determine the necessary fuel adjustments to achieve desired engine performance and efficiency.

4. Fuel Injectors: The actuator indirectly influences the fuel injectors by modulating the pressure and flow of fuel. This ensures that the injectors deliver the precise amount of fuel required at any given moment.

5. Exhaust Gas Recirculation (EGR) System: The actuator also plays a role in the EGR system by helping to maintain stable combustion conditions. This interaction helps reduce nitrogen oxides (NOx) emissions, contributing to a cleaner exhaust.

Conclusion

In summary, the Electronic Fuel Control Actuator (part 3917835) is a key component in the EECS, ensuring that fuel delivery is meticulously controlled to enhance engine performance, fuel efficiency, and emissions compliance. Its integration with Cummins engines and compatibility with specific models underscores its importance in modern diesel engine technology.