4937691
Exhaust Outlet Connection
Cummins®

The 4937691 Electronic Fuel Control Actuator Assembly, manufactured by Cummins, is a component designed to enhance the operation of heavy-duty trucks. Cummins, a well-established name in the automotive and heavy-duty truck industries, produces this actuator assembly to ensure efficient and reliable fuel management in diesel engines.

Basic Concepts

Electronic Fuel Control Actuator Assemblies are integral to the fuel system of diesel engines. They function by precisely controlling the amount of fuel injected into the engine’s combustion chamber. This control is achieved through electronic signals that adjust the actuator’s position, thereby regulating fuel delivery. The actuator interacts with the engine’s electronic control unit (ECU) to optimize fuel injection timing and quantity, ensuring efficient combustion and engine performance ¹.

Operation of the 4937691 Electronic Fuel Control Actuator Assembly

The 4937691 Electronic Fuel Control Actuator Assembly operates by receiving signals from the engine’s ECU. These signals are based on various engine parameters such as load, speed, and temperature. The actuator then adjusts the fuel injection process to maintain optimal engine performance. It does this by modulating the position of the fuel control valve, which directly affects the amount of fuel delivered to the engine. This precise control helps in achieving the desired balance between power output, fuel efficiency, and emissions ².

Purpose and Role in Truck Operation

In the context of heavy-duty truck operation, the 4937691 Electronic Fuel Control Actuator Assembly plays a significant role. It contributes to fuel efficiency by ensuring that the engine receives the precise amount of fuel needed for any given operating condition. This results in better fuel economy and reduced operating costs. Additionally, the actuator helps in controlling emissions by optimizing the combustion process, which leads to lower emissions of pollutants. Overall, it enhances engine performance by ensuring smooth and efficient operation under various load and speed conditions ³.

Key Features

The 4937691 Electronic Fuel Control Actuator Assembly is characterized by its robust design and high-quality construction materials. It incorporates advanced technological features such as precise electronic control mechanisms and durable components that ensure long-term reliability. The assembly is engineered to withstand the harsh conditions typical of heavy-duty truck environments, providing consistent performance over time.

Benefits

The use of the 4937691 Electronic Fuel Control Actuator Assembly offers several benefits. It improves fuel economy by optimizing fuel delivery, which translates to cost savings for truck operators. Reduced emissions are another significant advantage, as the precise control of fuel injection helps meet stringent environmental regulations. Enhanced engine performance is also a key benefit, with the actuator ensuring smooth and efficient engine operation. Additionally, the assembly contributes to increased reliability, reducing the likelihood of fuel system-related issues.

Troubleshooting and Maintenance

To ensure the optimal performance and longevity of the 4937691 Electronic Fuel Control Actuator Assembly, regular maintenance is recommended. This includes checking for any signs of wear or damage, ensuring that electrical connections are secure, and verifying that the actuator is functioning within specified parameters. Troubleshooting common issues may involve diagnosing electrical faults, checking for proper signal transmission from the ECU, and ensuring that the actuator moves freely without obstruction.

Integration with Cummins Engines

The 4937691 Electronic Fuel Control Actuator Assembly is designed to integrate seamlessly with Cummins engines. It is compatible with a range of Cummins diesel engines, enhancing their performance and efficiency. The integration process involves ensuring that the actuator is properly installed and that it communicates effectively with the engine’s ECU. Specific considerations for installation may include verifying electrical connections and ensuring that the actuator is aligned correctly within the fuel system.

Regulatory Compliance

The 4937691 Electronic Fuel Control Actuator Assembly plays a role in helping trucks comply with regulatory standards and emissions regulations. By optimizing fuel injection and combustion, it assists in meeting environmental and safety requirements. This ensures that trucks equipped with this actuator assembly can operate within the limits set by regulatory bodies, contributing to reduced environmental impact and safer road conditions.

Cummins Overview

Cummins Inc. is a leading manufacturer in the automotive and heavy-duty truck industries, known for its high-quality engines and components. The company has a long history of innovation and excellence, offering a wide range of products designed to meet the demanding needs of various applications. Cummins is recognized for its commitment to quality, reliability, and performance, making it a trusted name in the industry.

Compatibility of Cummins Electronic Fuel Control Actuator Assembly (Part 4937691)

The Cummins Electronic Fuel Control Actuator Assembly, identified by part number 4937691, is a critical component in the operation of several Cummins diesel engines. This part is integral to the engine’s fuel management system, ensuring precise control over the fuel delivery to the engine’s combustion chambers.

QSB4.5 CM850 (CM2850) and QSB6.7 CM850 (CM2850)

The QSB4.5 CM850 (CM2850) and QSB6.7 CM850 (CM2850) engines are part of Cummins’ QSB series, known for their reliability and efficiency in various applications. The Electronic Fuel Control Actuator Assembly for these engines is designed to interface seamlessly with the engine’s electronic control module (ECM). This assembly ensures that the engine’s fuel injection system operates within the parameters set by the ECM, optimizing performance and fuel efficiency.

QSB7 CM2880 B117

The QSB7 CM2880 B117 engine, another member of the QSB series, also utilizes the Cummins Electronic Fuel Control Actuator Assembly (4937691). This engine is typically found in heavy-duty applications, where it provides robust power and durability. The actuator assembly in this engine model is engineered to handle the higher demands of these applications, ensuring that the engine can maintain optimal performance under varying loads and conditions.

Installation and Functionality

Across these engines, the installation of the Electronic Fuel Control Actuator Assembly is a straightforward process, designed for ease of maintenance and replacement. The assembly connects to the engine’s fuel injection system, typically via a series of electrical connectors and mechanical linkages. It works in conjunction with the engine’s sensors and the ECM to regulate fuel delivery, ensuring that the engine operates at peak efficiency and performance.

Importance of the Assembly

The Electronic Fuel Control Actuator Assembly is crucial for the overall health and performance of the engine. It ensures that the engine can respond to changes in load and operating conditions by adjusting the fuel delivery accordingly. This not only enhances the engine’s performance but also contributes to its longevity by preventing excessive wear and tear on engine components.

Role of Part 4937691 Electronic Fuel Control Actuator Assembly in Engine Systems

The Electronic Fuel Control Actuator Assembly, identified by part number 4937691, is integral to the precise management of fuel delivery within engine systems. This component works in harmony with various engine components to ensure optimal performance and efficiency.

Interaction with the Connection

The Electronic Fuel Control Actuator Assembly interfaces with the engine’s electronic control unit (ECU) through a dedicated connection. This connection allows the ECU to send signals to the actuator, dictating the precise amount of fuel to be injected into the combustion chamber. The actuator responds to these signals by adjusting the fuel injector’s operation, ensuring that the fuel delivery is finely tuned to match the engine’s current demands. This interaction is essential for maintaining the correct air-fuel ratio, which is vital for efficient combustion and reduced emissions.

Influence on the Exhaust Outlet

The performance of the Electronic Fuel Control Actuator Assembly directly impacts the exhaust outlet. By regulating the fuel injection process, the actuator helps to ensure that combustion is complete and efficient. This results in cleaner exhaust emissions, as unburnt fuel and other pollutants are minimized. The actuator’s role in maintaining the ideal air-fuel ratio also contributes to the overall reduction of harmful emissions, making the exhaust output more environmentally friendly. Additionally, efficient fuel delivery leads to better engine performance, which can be observed in the smoothness and responsiveness of the exhaust note.

Conclusion

The Cummins Electronic Fuel Control Actuator Assembly (4937691) is a vital component for the QSB4.5 CM850 (CM2850), QSB6.7 CM850 (CM2850), and QSB7 CM2880 B117 engines. Its role in managing the engine’s fuel delivery system is essential for maintaining optimal performance, efficiency, and longevity. The actuator assembly ensures that the engine can respond to varying load and operating conditions by precisely controlling fuel delivery, thereby enhancing engine performance, improving fuel efficiency, and reducing emissions. Regular maintenance and proper installation are key to ensuring the longevity and effectiveness of this component.