4903523
Electronic Fuel Control Actuator
Cummins®

The Electronic Fuel Control Actuator part number 4903523, manufactured by Cummins, is a component designed to regulate fuel delivery in commercial trucks. Its purpose is to enhance the precision and efficiency of fuel injection, contributing to the overall performance and emissions control of the vehicle. Cummins, a well-established name in the diesel engine industry, produces this actuator as part of its commitment to innovation and quality in commercial vehicle technology ¹.

Basic Concepts of Electronic Fuel Control Actuators

An Electronic Fuel Control Actuator is a device that modulates the amount of fuel injected into the engine’s combustion chamber. It operates within the fuel injection system, receiving signals from the engine control unit (ECU) to adjust fuel delivery based on various operating conditions. This component is vital in modern diesel engines, where precise fuel control is necessary to meet stringent emissions standards and optimize engine performance ².

Compatibility with Cummins Engines

ISC Series Engines

• ISC CM2150
• ISC CM850
• ISC8.3 CM2250

The ISC series engines, including the ISC CM2150, ISC CM850, and ISC8.3 CM2250, are equipped with the Electronic Fuel Control Actuator 4903523. This part ensures precise control over fuel injection, enhancing the engine’s responsiveness and fuel economy.

ISL Series Engines

• ISL CM2150
• ISL9 CM2150 SN
• ISL9 CM2250
• ISL9.5 CM2880 L138

The ISL series engines, such as the ISL CM2150, ISL9 CM2150 SN, ISL9 CM2250, and ISL9.5 CM2880 L138, also utilize the 4903523 actuator. This component is essential for maintaining the balance between power output and fuel efficiency in these high-performance engines.

QSC and QSL Series Engines

• QSC8.3 CM850 (CM2850)
• QSC9 CM2250 / QSL9 CM2250
• QSL8.9 CM2150 L141
• QSL9 CM2250
• QSL9 CM2350 L102
• QSL9 CM850 (CM2850)

The QSC and QSL series engines, including the QSC8.3 CM850 (CM2850), QSC9 CM2250 / QSL9 CM2250, QSL8.9 CM2150 L141, QSL9 CM2250, QSL9 CM2350 L102, and QSL9 CM850 (CM2850), are also compatible with the 4903523 actuator. This part plays a role in the fuel management system of these engines, ensuring smooth operation and optimal performance under various conditions.

Role of Part 4903523 Electronic Fuel Control Actuator in Engine Systems

The Electronic Fuel Control Actuator (part 4903523) is an integral component in the efficient operation of modern engine systems, particularly in the context of fuel management and delivery. This actuator works in concert with several key components to ensure optimal engine performance, fuel efficiency, and emissions control.

Integration with Fuel Actuator Kit

When integrated with a Fuel Actuator Kit, the Electronic Fuel Control Actuator enhances the precision of fuel delivery. The actuator receives signals from the engine control unit (ECU) and adjusts the fuel metering accordingly. This ensures that the correct amount of fuel is delivered to the combustion chamber under varying engine loads and operating conditions.

Coordination with Fuel Injection Pump

In systems equipped with a Fuel Injection Pump, the Electronic Fuel Control Actuator plays a significant role in modulating the injection timing and quantity. By precisely controlling the actuator, the injection pump can deliver fuel with high accuracy, which is essential for maintaining engine efficiency and reducing emissions.

Interaction with Fuel Pump and Fuel Pump Assembly

The actuator also interfaces with the Fuel Pump and Fuel Pump Assembly to regulate the fuel pressure within the system. This interaction ensures that the fuel is delivered at the optimal pressure, which is vital for the proper functioning of the injectors and overall engine performance.

Role in Fuel Pump Adapter and Fuel Pump Mounting

In conjunction with the Fuel Pump Adapter and Fuel Pump Mounting components, the Electronic Fuel Control Actuator helps in stabilizing the fuel supply. It ensures that the fuel pump operates within its designed parameters, thereby prolonging the lifespan of the pump and enhancing the reliability of the fuel system.

Functionality within XPI JV Components and XPI JV System Cummins MR

For engines utilizing XPI JV Components and the XPI JV System Cummins MR, the Electronic Fuel Control Actuator is essential for the high-pressure fuel system. It enables the system to achieve the necessary fuel pressures for direct injection, which is critical for the performance and efficiency of these advanced engine systems. The actuator’s ability to fine-tune fuel delivery contributes to the overall robustness and responsiveness of the engine.

Benefits

The implementation of the 4903523 Electronic Fuel Control Actuator in a truck’s engine system offers several benefits. It contributes to improved fuel efficiency by ensuring that fuel is delivered in the most efficient manner possible. Additionally, it enhances engine performance by allowing for precise control over the combustion process. Furthermore, reduced emissions are a direct result of the actuator’s ability to optimize fuel delivery, helping the vehicle meet environmental regulations.

Troubleshooting and Maintenance

Common issues with the 4903523 Electronic Fuel Control Actuator may include malfunctions due to electrical faults or wear and tear from continuous operation. Diagnostic procedures involve checking for error codes from the ECU, inspecting electrical connections, and testing the actuator’s response to commands. Regular maintenance, such as cleaning and inspecting the actuator and its connections, can help ensure optimal performance and longevity.

Conclusion

The 4903523 Electronic Fuel Control Actuator is a vital component in the fuel management system of Cummins engines, ensuring optimal engine performance, fuel efficiency, and emissions control. Its integration with various engine components and systems highlights its importance in modern diesel engine technology.

References