4940176
Intake Air Heater
Cummins®

Introduction

The Cummins 4940176 Intake Air Heater is designed to enhance the performance of heavy-duty trucks, particularly in cold weather conditions. It is part of the air intake system and plays a role in warming the air before it enters the engine, contributing to more efficient engine operation and improved fuel economy ².

Basic Concepts of Intake Air Heaters

An intake air heater is a device used in diesel engines to preheat the air entering the combustion chamber. This preheating process is vital for maintaining optimal engine performance, especially in colder climates where the air density is higher. By warming the intake air, the heater helps to ensure that the air-fuel mixture burns more efficiently, which can lead to smoother engine start-ups and reduced wear on engine components ³.

Purpose of the Cummins 4940176 Intake Air Heater

The Cummins 4940176 Intake Air Heater is designed to improve the operation of heavy-duty trucks by preheating the intake air. This preheating enhances engine performance by ensuring that the air-fuel mixture combusts more efficiently. As a result, the engine may experience reduced cold-start difficulties, improved fuel efficiency, and lower emissions. The heater also contributes to maintaining consistent engine performance across varying temperatures ⁴.

Key Features

The Cummins 4940176 Intake Air Heater is constructed with durable materials to withstand the harsh conditions often encountered in heavy-duty truck operations. Its design includes a heating element that is strategically positioned within the air intake path. This element is controlled by an electrical system that activates based on engine and ambient temperature conditions. The heater is engineered to integrate seamlessly with the truck’s existing air intake system, requiring minimal modifications for installation.

Benefits

The advantages of the Cummins 4940176 Intake Air Heater include improved engine start-up in cold weather, which can be particularly beneficial in regions with extreme temperatures. Enhanced combustion efficiency leads to better fuel economy and reduced emissions, contributing to a more environmentally friendly operation. Additionally, the heater can help in reducing engine wear by promoting smoother and more consistent engine operation from the moment of start-up ¹.

Installation and Integration

Installing the Cummins 4940176 Intake Air Heater involves integrating it into the truck’s air intake system. This process may require specific modifications depending on the truck’s make and model to ensure a proper fit and function. It is important to follow the manufacturer’s guidelines for installation to maintain the heater’s effectiveness and ensure it operates within the designed parameters.

Troubleshooting Common Issues

Common issues with the Cummins 4940176 Intake Air Heater may include heating element failures or electrical problems. Diagnosing these issues typically involves checking the electrical connections and the heating element for signs of wear or damage. Regular inspections can help identify potential problems before they lead to significant issues, allowing for timely repairs or replacements.

Maintenance Tips

To ensure the optimal performance and longevity of the Cummins 4940176 Intake Air Heater, regular maintenance is recommended. This includes inspecting the heating element and electrical connections for any signs of damage or corrosion. Cleaning the intake system to remove any debris that could obstruct the heater’s operation is also important. Following these maintenance practices can help prevent issues and ensure the heater continues to function effectively.

Performance in Various Conditions

The Cummins 4940176 Intake Air Heater is designed to perform under a range of operating conditions, including extreme cold and high-altitude environments. Its ability to preheat the intake air contributes to maintaining engine performance and efficiency across these varying conditions. The heater’s robust construction and design allow it to withstand the demands of heavy-duty truck operations in diverse climates.

Cummins Company Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including diesel engines and related components. With a history of innovation and a commitment to quality, Cummins has established a reputation for producing reliable and high-performance products. The company’s expertise in engine technology is reflected in its range of components, including the Cummins 4940176 Intake Air Heater.

Cummins Intake Air Heater 4940176 Compatibility

The Cummins Intake Air Heater part number 4940176 is designed to enhance engine performance by preheating the intake air, which is particularly beneficial in cold weather conditions. This part is compatible with a range of Cummins engines, ensuring optimal performance and reliability across various applications.

Compatible Engines

• 6C8.3
• ISC CM850
• ISL9 CM2150 SN
• L9 CM2670 L128B
• QSC8.3 CM850 (CM2850)
• QSL8.9 CM2150 L141
• QSL9 CM850 (CM2850)

Grouping by Engine Series

• ISC Series:

  • ISC CM850
  • QSC8.3 CM850 (CM2850)

• ISL Series:

  • ISL9 CM2150 SN

• QSC Series:

  • QSC8.3 CM850 (CM2850)

• QSL Series:

  • QSL8.9 CM2150 L141
  • QSL9 CM850 (CM2850)

• Others:

  • 6C8.3
  • L9 CM2670 L128B

The intake air heater part 4940176 is engineered to fit seamlessly into these engines, providing a reliable solution for maintaining engine efficiency and performance in varying climatic conditions.

Role of Part 4940176 Intake Air Heater in Engine Systems

The part 4940176 Intake Air Heater is an essential component in modern engine systems, particularly in diesel engines where cold-start performance is a significant concern. This component is integrated into the air intake system, working in conjunction with several other components to optimize engine operation.

Integration with Air Intake System

The Intake Air Heater is positioned within the air intake tract, typically between the air filter and the turbocharger (if equipped). Its primary function is to preheat the intake air before it enters the combustion chamber. This preheating process is vital for several reasons:

• Improved Combustion Efficiency: Warmer air is less dense and can be more effectively mixed with fuel, leading to more efficient combustion. This is particularly important in cold weather conditions where the air is denser and colder ².

• Reduced Emissions: Efficient combustion results in lower emissions of unburnt hydrocarbons and other pollutants. The Intake Air Heater helps in achieving cleaner emissions by ensuring that the air-fuel mixture is optimal ³.

Interaction with Air Heater Starting System

The Intake Air Heater is controlled by the Air Heater Starting (AHS) system. This system includes a thermostat, a control module, and electrical wiring. The thermostat monitors the temperature of the intake air and signals the control module when heating is required. The control module then activates the Intake Air Heater element, which begins to warm the air.

• Thermostat: Acts as a sensor, detecting the temperature of the intake air. When the temperature drops below a certain threshold, it sends a signal to the control module.

• Control Module: Processes the signal from the thermostat and activates the Intake Air Heater. It ensures that the heater operates only when necessary, conserving energy and preventing overheating.

Benefits for Engine Performance

The integration of the Intake Air Heater with the AHS system offers several benefits for engine performance:

• Enhanced Cold-Start Performance: By preheating the intake air, the engine can start more easily in cold conditions. This is particularly beneficial for diesel engines, which rely on compression ignition and can struggle with cold starts ⁴.

• Smoother Idle: Warmer intake air leads to more stable combustion, resulting in a smoother idle and reduced engine vibrations.

• Faster Warm-Up: The engine reaches its optimal operating temperature more quickly, which is essential for efficient operation and reduced wear on engine components.

Conclusion

In summary, the Cummins 4940176 Intake Air Heater plays a significant role in enhancing engine performance, especially in cold weather conditions. Its integration with the air intake system and the Air Heater Starting system ensures that the engine operates efficiently, with reduced emissions and improved drivability.