4930912
Air Intake Manifold
Cummins®

The Cummins 4930912 Air Intake Manifold is a component designed for use in commercial trucks. It plays a role in the operation of these vehicles by ensuring efficient air distribution to the engine cylinders. This part is integral to maintaining optimal engine performance and efficiency in heavy-duty applications.

Basic Concepts of Air Intake Manifolds

An air intake manifold is a component found in internal combustion engines. Its primary function is to evenly distribute the air-fuel mixture into each cylinder of the engine. This even distribution is vital for consistent combustion, which directly influences engine performance, power output, and fuel efficiency. The design and material of the manifold can affect how well it performs these functions ¹.

Purpose of the 4930912 Air Intake Manifold

The 4930912 Air Intake Manifold from Cummins is specifically engineered to facilitate the distribution of air to the engine cylinders in commercial trucks. By ensuring a consistent and adequate supply of air, it plays a role in the combustion process, which is fundamental to the engine’s operation. This part helps in achieving balanced air distribution, which is important for the engine’s efficiency and performance.

Key Features

The 4930912 Air Intake Manifold is characterized by its robust design and the materials used in its construction. It is built to withstand the demanding conditions of commercial truck operations. The manifold’s design includes features that enhance airflow efficiency and reduce turbulence, contributing to better engine performance. Additionally, the materials chosen for its construction offer resistance to wear and corrosion, ensuring longevity and reliability in various operating environments ².

Benefits

The use of the 4930912 Air Intake Manifold can lead to improved engine efficiency and performance. By optimizing the air distribution to the cylinders, it contributes to more consistent combustion, which can result in enhanced engine power and potentially better fuel economy. These benefits are particularly valuable in the context of commercial trucking, where efficiency and reliability are paramount.

Installation and Compatibility

Installing the 4930912 Air Intake Manifold requires attention to specific requirements to ensure proper fit and function. It is designed to be compatible with certain engine models, and its installation should follow manufacturer guidelines to maintain engine performance and efficiency. Proper installation is key to realizing the full benefits of this component.

Maintenance and Troubleshooting

Regular maintenance of the 4930912 Air Intake Manifold is important to ensure its continued performance and durability. This includes routine inspections for signs of wear or damage, cleaning to remove any buildup that could affect airflow, and addressing any issues promptly to prevent further complications. Proper maintenance can extend the lifespan of the manifold and contribute to the overall reliability of the engine.

Performance Enhancements

The 4930912 Air Intake Manifold can contribute to overall engine performance enhancements. By improving the efficiency of air distribution, it can lead to potential increases in horsepower, torque, and throttle response. These improvements are beneficial for commercial trucks, where performance and responsiveness are important for operational efficiency.

Durability and Reliability

The Cummins 4930912 Air Intake Manifold is designed with durability and reliability in mind. Its construction materials and design features provide resistance to wear, corrosion, and other forms of degradation over time. This ensures that the manifold can withstand the rigors of commercial truck use, maintaining its performance and efficiency throughout its service life.

Cummins Corporation

Cummins Corporation is a well-established entity in the automotive components industry, known for its commitment to producing high-quality parts. With a history of innovation and excellence, Cummins has built a reputation for reliability and performance in the components it manufactures. The 4930912 Air Intake Manifold is a testament to Cummins’ dedication to enhancing engine performance and efficiency in commercial applications.

Compatibility with Cummins Engines

The Cummins part 4930912, an Air Intake Manifold, is designed to fit seamlessly with several Cummins engine models. This part is integral to the engine’s air intake system, ensuring efficient airflow into the engine.

For the ISB/ISD4.5 CM2150 B119 engines, the Air Intake Manifold 4930912 is specifically engineered to match the engine’s design, facilitating optimal air flow and enhancing overall engine performance.

Similarly, for the ISBE4 CM850 engines, this manifold is crafted to integrate perfectly, ensuring that the engine receives the right amount of air for combustion.

The QSB4.5 CM850 (CM2850) engines also benefit from the 4930912 Air Intake Manifold. This part is designed to fit these engines, providing a crucial component in the air intake system that contributes to the engine’s efficiency and power output.

Role of Part 4930912 Air Intake Manifold in Engine Systems

The Air Intake Manifold (part 4930912) is integral to the efficient operation of an engine system. It serves as a conduit for the air-fuel mixture, directing it from the throttle body to the engine’s cylinders. This component interfaces with several key elements within the engine system to ensure optimal performance.

Interaction with the Throttle Body

The Air Intake Manifold connects directly to the throttle body, which regulates the amount of air entering the engine. As the throttle plate opens and closes, it controls the airflow into the manifold. This airflow is critical for maintaining the correct air-fuel ratio, which is important for combustion efficiency.

Connection to Engine Cylinders

Once the air-fuel mixture passes through the manifold, it is distributed to the individual engine cylinders. The manifold is designed to provide an even distribution of the mixture to each cylinder, ensuring consistent combustion across the engine. This even distribution is vital for smooth engine operation and power delivery.

Integration with Fuel Injectors

In fuel-injected engines, the Air Intake Manifold works in conjunction with fuel injectors. These injectors spray fuel into the manifold, where it mixes with the incoming air. The design of the manifold helps to create a homogeneous mixture, which is then drawn into the cylinders during the intake stroke.

Relationship with the Mass Airflow Sensor (MAF)

The Mass Airflow Sensor (MAF) is typically located upstream of the Air Intake Manifold. It measures the volume and density of the air entering the engine. This data is used by the engine control unit (ECU) to adjust the fuel injection timing and quantity, ensuring the air-fuel mixture remains within optimal parameters.

Coordination with the Engine Control Unit (ECU)

The ECU relies on feedback from various sensors, including the MAF and oxygen sensors, to monitor and adjust the air-fuel mixture. The Air Intake Manifold plays a role in this feedback loop by ensuring that the mixture is consistently delivered to the cylinders, allowing the ECU to make real-time adjustments for optimal engine performance.

Impact on Engine Performance

The design and condition of the Air Intake Manifold can significantly influence engine performance. A well-designed manifold can improve airflow efficiency, reduce turbulence, and enhance the overall combustion process. Conversely, a damaged or poorly designed manifold can lead to inefficiencies, reduced power output, and increased emissions.

Conclusion

In summary, the Air Intake Manifold (part 4930912) is a key component in the engine system, facilitating the smooth and efficient distribution of the air-fuel mixture to the engine cylinders. Its interaction with other components such as the throttle body, fuel injectors, MAF sensor, and ECU underscores its importance in maintaining engine performance and efficiency.