3047941
Throttle Lever
Cummins®

The Throttle Lever 3047941, manufactured by Cummins, is a component designed for use in commercial trucks. Cummins, a well-established name in the engine manufacturing industry, produces a range of parts aimed at enhancing the performance and reliability of commercial vehicles. This part plays a significant role in controlling engine speed and power output.

Basic Concepts of Throttle Levers

A throttle lever is a mechanical device that allows the driver to control the amount of fuel and air entering the engine. By adjusting the position of the throttle lever, the driver can increase or decrease the engine’s speed and power. This control is essential for the efficient operation of the vehicle, as it allows for adjustments based on driving conditions and load requirements. The throttle lever interfaces with the engine’s fuel injection system and air intake to modulate these parameters.

Purpose of the 3047941 Throttle Lever

This Cummins part is specifically designed to integrate with Cummins engines found in commercial trucks. Its role is to provide precise control over the engine’s fuel delivery and air intake. By moving the throttle lever, the driver can adjust the engine’s performance to match the demands of the task at hand, whether it be hauling heavy loads or navigating through varying terrains. This lever ensures that the engine operates within its optimal range, contributing to both performance and efficiency.

Key Features

The 3047941 Throttle Lever boasts several key features that enhance its functionality and durability. Its design incorporates high-quality materials that are resistant to wear and corrosion, ensuring longevity in demanding commercial environments ¹. The lever’s ergonomic design allows for easy and precise control by the driver, while its robust construction ensures it can withstand the rigors of heavy-duty use. Additionally, the lever is engineered to provide smooth operation, minimizing the risk of sticking or unresponsiveness.

Benefits

Utilizing the 3047941 Throttle Lever in a truck’s engine system offers several benefits. It contributes to improved engine responsiveness, allowing for quicker adjustments to engine speed and power. This enhanced control can lead to better overall performance and potentially increase fuel efficiency by enabling more precise modulation of fuel delivery. Furthermore, the lever’s design and materials contribute to its durability, reducing the need for frequent replacements and maintenance.

Installation and Integration

Proper installation of the 3047941 Throttle Lever is crucial for ensuring it functions correctly within the engine system. Installation guidelines recommend following the manufacturer’s instructions closely to ensure the lever is securely attached and properly aligned with the engine’s control mechanisms. Calibration may be necessary to ensure the throttle lever operates within the engine’s specified parameters, optimizing performance and efficiency.

Troubleshooting Common Issues

Common issues with the 3047941 Throttle Lever may include sticking or unresponsiveness. These problems can often be traced to dirt or debris accumulation, wear on the lever or its components, or misalignment. Troubleshooting steps may involve cleaning the lever and its surrounding components, lubricating moving parts, or adjusting the lever’s position to ensure proper alignment with the engine’s control system.

Maintenance Tips

Regular maintenance of the 3047941 Throttle Lever is key to ensuring its optimal performance and longevity. Maintenance tips include periodic cleaning to remove dirt and debris, lubrication of moving parts to ensure smooth operation, and inspection for signs of wear or damage. Addressing these issues promptly can prevent more significant problems down the line and ensure the lever continues to function effectively.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a reputation for quality, innovation, and reliability in the commercial truck industry. The company’s commitment to excellence is evident in its wide range of products, designed to meet the demanding requirements of commercial applications. Cummins’ dedication to quality and innovation ensures that its components, like the 3047941 Throttle Lever, are built to the highest standards, providing reliable performance and durability in commercial truck engines.

Compatibility with Cummins Engines

This part is designed to be compatible with a range of Cummins engines, ensuring seamless integration and functionality across different engine models. It is specifically engineered to fit with the L10 MECHANICAL, N14 MECHANICAL, and NH/NT 855 engines, providing a reliable and efficient solution for throttle control.

For the L10 MECHANICAL and N14 MECHANICAL engines, the Throttle Lever is engineered to interface smoothly with the engine’s throttle mechanism. This ensures that the throttle response is precise and consistent, which is crucial for maintaining optimal engine performance and efficiency. The design of the lever is such that it can handle the mechanical forces exerted by these engines, providing a durable and long-lasting solution.

In the case of the NH/NT 855 engine, the Throttle Lever is tailored to fit the specific design and operational requirements of this engine model. The lever’s design allows for easy installation and adjustment, ensuring that it can be precisely calibrated to match the engine’s performance characteristics. This compatibility is essential for ensuring that the throttle control system operates smoothly and efficiently, contributing to the overall reliability and performance of the engine.

By providing a compatible throttle lever for these engines, Cummins ensures that operators and maintenance personnel can easily replace or upgrade their throttle control systems without the need for extensive modifications or custom fittings. This compatibility not only saves time and reduces costs but also ensures that the engines continue to operate at peak performance levels.

Role of Throttle Lever 3047941 in Engine Systems

The Throttle Lever, identified by part number 3047941, is an integral component in the regulation of engine performance. It operates in conjunction with several key components to ensure the engine operates efficiently and responsively.

Interaction with the Throttle Body

The Throttle Lever is directly connected to the throttle body, a component that controls the amount of air entering the engine. By adjusting the position of the throttle plate within the throttle body, the lever modulates airflow. This, in turn, affects the air-fuel mixture entering the combustion chamber, allowing for precise control over engine speed and power output.

Connection to the Accelerator Pedal

In most engine systems, the Throttle Lever is linked to the accelerator pedal through a series of mechanical linkages or, in more modern systems, electronic signals. When the driver presses the accelerator pedal, the lever moves, opening the throttle plate to allow more air (and consequently more fuel) into the engine. This results in increased engine speed and power.

Integration with the Engine Control Unit (ECU)

In electronically controlled engine systems, the Throttle Lever often works in tandem with the Engine Control Unit (ECU). The ECU receives input from various sensors, including the throttle position sensor (TPS) mounted on the throttle body. The TPS monitors the position of the Throttle Lever and sends this data to the ECU, which then adjusts fuel delivery and ignition timing to maintain optimal engine performance.

Role in Idle Control

At idle, the Throttle Lever plays a part in maintaining a stable engine speed. The idle control system, which may include an idle air control (IAC) valve, works with the Throttle Lever to fine-tune the airflow when the throttle plate is nearly closed. This ensures the engine runs smoothly without stalling.

Contribution to Driveability

The Throttle Lever significantly impacts the drivability of a vehicle. Its precise operation ensures smooth acceleration and deceleration, contributing to a responsive and enjoyable driving experience. It allows for fine adjustments in engine load, which is essential for maintaining vehicle speed on inclines, during overtaking maneuvers, or when towing.

Safety Mechanisms

In many modern vehicles, the Throttle Lever is part of a fail-safe system. If the electronic throttle control system detects a fault, it may default to a limp-home mode, where the Throttle Lever allows only a limited range of motion to ensure the vehicle can be safely driven to a repair facility.

Conclusion

The Throttle Lever 3047941 is a key component in the engine systems of commercial trucks, offering precise control over engine performance. Its compatibility with various Cummins engines, coupled with its robust design and features, ensures reliable operation and enhances the overall efficiency and drivability of the vehicle. Regular maintenance and proper installation are crucial for maximizing the benefits of this part.