4940175
Intake Air Heater
Cummins®

Introduction

The Cummins 4940175 Intake Air Heater is designed to enhance the performance of heavy-duty trucks, especially in cold weather conditions. It is a critical component of the intake system that contributes to the efficient operation of diesel engines by warming the intake air before it enters the combustion chamber ¹.

Basic Concepts of Intake Air Heaters

An intake air heater is a device used in diesel engines to preheat the air entering the engine. This preheating process improves combustion efficiency by ensuring that the air-fuel mixture reaches optimal temperatures more quickly. In diesel engines, where ignition relies on the compression of air rather than a spark, the temperature of the intake air plays a significant role in the efficiency and smoothness of engine operation ².

Purpose of the Cummins 4940175 Intake Air Heater

The Cummins 4940175 Intake Air Heater is designed to improve engine performance in cold weather by preheating the intake air. This preheating facilitates better combustion, which can lead to easier engine start-ups, reduced wear on engine components, and more consistent engine performance. Additionally, it helps in reducing the time required for the engine to reach operating temperature, which is beneficial for both engine longevity and fuel efficiency ³.

Key Features

The Cummins 4940175 Intake Air Heater is constructed with durable materials to withstand the harsh conditions typical of heavy-duty truck operations. Its design incorporates advanced technology to ensure efficient heating of the intake air. The heater is engineered to be compact yet powerful, fitting seamlessly into the truck’s engine system without requiring significant modifications.

Benefits

The advantages of using the Cummins 4940175 Intake Air Heater include improved engine start-up in cold conditions, which can be particularly beneficial in regions with extreme winter temperatures. It also contributes to enhanced fuel efficiency by promoting more complete combustion. Furthermore, the heater aids in reducing emissions, as warmer air leads to more efficient burning of fuel, minimizing the release of unburned hydrocarbons and other pollutants.

Installation and Integration

Installing the Cummins 4940175 Intake Air Heater involves integrating it into the truck’s existing intake system. This process requires careful attention to ensure that all connections are secure and that the heater is properly aligned with the airflow. Specific requirements may include electrical connections for the heater element and ensuring that the heater does not obstruct other components within the engine bay.

Troubleshooting and Maintenance

Common issues with the Cummins 4940175 Intake Air Heater may include electrical faults, such as a malfunctioning thermostat or wiring issues, and physical damage to the heater element. Regular maintenance practices include inspecting the electrical connections for corrosion or damage, ensuring that the heater element is free from obstructions, and checking for any signs of wear or damage to the housing. Diagnostic tips may involve using a multimeter to test electrical connections and observing the heater’s operation during start-up to ensure it is functioning correctly.

Performance Impact

The Cummins 4940175 Intake Air Heater contributes to the overall performance of the truck by enhancing engine efficiency, particularly in cold weather. This can lead to improved reliability and reduced operational costs over time, as the engine operates more smoothly and efficiently. The heater also plays a role in maintaining engine health by reducing the stress on components during cold starts.

Environmental Considerations

Using the Cummins 4940175 Intake Air Heater can lead to reductions in harmful emissions. By promoting more complete combustion, the heater helps in minimizing the release of pollutants into the atmosphere. This contributes to more sustainable operations, aligning with environmental goals for reducing the carbon footprint of heavy-duty transportation.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and emission solutions. With a history spanning over a century, Cummins is committed to innovation and quality, providing reliable and efficient products for various industries, including automotive, construction, and power generation.

Compatibility of Intake Air Heater Part 4940175 with Cummins Engines

The Intake Air Heater part 4940175, manufactured by Cummins, is designed to fit a variety of Cummins engines, ensuring optimal performance and efficiency across different applications. This part is engineered to provide efficient heating of the intake air, which is crucial for cold-weather starting and reducing emissions.

Engines Compatible with Part 4940175

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

Grouping of Compatible Engines

• ISC and QSC Series: The part 4940175 is compatible with the ISC CM850 and QSC8.3 CM850 (CM2850) engines. These engines are known for their robust performance and reliability, making the intake air heater a critical component for maintaining engine efficiency, especially in colder climates.
• ISL and QSL Series: The ISL9 CM2150 SN and QSL8.9 CM2150 L141 engines also utilize the part 4940175. These engines are part of the Cummins L-series, which are designed for heavy-duty applications. The intake air heater ensures that these engines start reliably and operate efficiently under various conditions.
• L9 Series: The L9 CM2670 L128B engine is another compatible model. This engine is typically used in medium-duty applications, and the intake air heater plays a vital role in ensuring smooth operation and reducing emissions.

By ensuring that the intake air heater part 4940175 is correctly installed in these engines, users can expect improved engine performance, easier starting in cold weather, and enhanced overall reliability.

Role of Part 4940175 Intake Air Heater in Engine Systems

The part 4940175 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 and works in conjunction with several other components to enhance 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 warm the incoming air before it enters the combustion chamber. This is particularly beneficial in cold climates where the dense, cold air can lead to inefficient combustion.

Interaction with the Air Heater Starting System

The operation of the intake air heater is controlled by the air heater starting system. This system includes a thermostat and a control module that monitors the engine coolant temperature. When the engine is started in cold conditions, the control module activates the heater element within the intake air heater. This element warms the air, improving combustion efficiency and reducing the time required for the engine to reach optimal operating temperature.

Benefits for Engine Performance

By preheating the intake air, the part 4940175 intake air heater contributes to several performance enhancements:

• Improved Cold Start Performance: Warmer air leads to more efficient combustion, reducing the time needed for the engine to warm up.
• Reduced Emissions: Efficient combustion results in lower emissions, particularly in diesel engines where cold starts can produce higher levels of particulate matter and nitrogen oxides.
• Enhanced Fuel Efficiency: Better combustion efficiency means the engine can operate more effectively, leading to improved fuel economy.
• Extended Component Life: By reducing the strain on the engine during cold starts, the intake air heater helps in prolonging the life of various engine components.

Conclusion

In summary, the part 4940175 intake air heater plays a significant role in optimizing engine performance, especially in challenging cold-start conditions. Its integration with the air intake and air heater starting systems ensures that the engine operates efficiently and reliably from the moment it is started.