4959512
Throttle Valve
Cummins®

Introduction

The Cummins 4959512 Throttle Valve is a component designed for use in commercial trucks. It plays a role in the operation of these vehicles by regulating the air and fuel mixture that enters the engine. This regulation is important for maintaining optimal engine performance, ensuring efficient fuel consumption, and contributing to the overall drivability of the truck.

Basic Concepts of Throttle Valves

A throttle valve, also known as a throttle body, is a device found in an engine’s intake system. Its primary function is to control the amount of air entering the engine, which in turn affects the fuel mixture. By adjusting the throttle valve, the engine’s speed and power output can be modulated. This control is important for the engine to operate efficiently under varying conditions and loads ¹.

Purpose of the Cummins 4959512 Throttle Valve

The Cummins 4959512 Throttle Valve is specifically engineered to regulate engine speed and power output in commercial trucks. It achieves this by controlling the airflow into the engine, which directly influences the air-fuel ratio. Proper regulation of this ratio is key to ensuring that the engine operates within its optimal performance range, providing the necessary power while maintaining fuel efficiency.

Key Features

The Cummins 4959512 Throttle Valve is characterized by its robust design and the use of high-quality materials. These features contribute to its durability and reliable performance under the demanding conditions typical of commercial truck operations. The valve’s design also includes precision engineering to ensure accurate control of the air-fuel mixture, enhancing engine efficiency and performance.

Benefits

Utilizing the Cummins 4959512 Throttle Valve in a truck’s engine system offers several advantages. These include improved engine efficiency, which can lead to better fuel economy. Additionally, the valve contributes to enhanced drivability by providing smooth and responsive engine performance. Potential fuel savings are another benefit, making it a valuable component for fleet operators looking to optimize operational costs.

Installation and Integration

Proper installation of the Cummins 4959512 Throttle Valve is important for its effective operation. The installation process requires specific tools and equipment to ensure that the valve is correctly fitted into the truck’s engine system. Integration into the engine system involves connecting the valve to the intake system and ensuring it is properly aligned and secured. This step is important for the valve to function as intended, regulating the air-fuel mixture accurately.

Troubleshooting and Maintenance

Common issues with the Cummins 4959512 Throttle Valve may include malfunctions due to wear and tear or improper installation. Diagnostic procedures involve checking for proper airflow regulation and ensuring the valve is correctly positioned within the engine system. Regular maintenance, such as cleaning and inspecting the valve for signs of wear, can help prevent issues and ensure optimal performance and longevity.

Performance Impact

The Cummins 4959512 Throttle Valve plays a role in the overall performance of the truck by influencing engine response, fuel consumption, and emissions. Accurate control of the air-fuel mixture by the valve can lead to more efficient engine operation, potentially reducing fuel consumption and emissions. Additionally, the valve’s impact on engine response can enhance the driving experience by providing smoother and more responsive acceleration.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and emissions solutions. With a strong reputation in the commercial truck industry, Cummins is known for its commitment to quality, innovation, and customer satisfaction. The company’s extensive product offerings and global presence make it a trusted partner for commercial vehicle operators worldwide.

Cummins Throttle Valve 4959512 Compatibility

The Cummins Throttle Valve part number 4959512 is designed to fit seamlessly with a variety of Cummins engines, ensuring optimal performance and reliability. This part is engineered to work with the following engines:

• KTA19 Series: The Throttle Valve 4959512 is specifically compatible with the KTA19GC engine. This engine is part of the KTA19 series, which is known for its robust design and efficiency in various industrial applications.

The Throttle Valve 4959512 plays a role in regulating the engine’s air intake, which directly impacts the engine’s power output and efficiency. By ensuring a precise fit and function, this part helps maintain the engine’s performance and longevity.

Grouping of Compatible Engines

While the Throttle Valve 4959512 is explicitly designed for the KTA19GC engine, it is part of a broader range of components that Cummins offers for its engines. This part is engineered to meet the specific needs of the KTA19 series, ensuring that it integrates smoothly with the engine’s design and operational requirements.

Role of Part 4959512 Throttle Valve in Engine Systems

The 4959512 Throttle Valve is an integral component in the orchestration of engine performance, working in tandem with various other components to ensure optimal operation.

Interaction with the Throttle Body

The 4959512 Throttle Valve interfaces directly with the throttle body, modulating the airflow into the engine. This interaction is important for controlling the engine’s power output and efficiency. The valve’s precise adjustments allow for fine-tuning of the air-fuel mixture, which is vital for maintaining engine performance under varying conditions.

Coordination with the Engine Control Unit (ECU)

The 4959512 Throttle Valve communicates with the Engine Control Unit (ECU) to receive signals that dictate the valve’s position. This electronic dialogue ensures that the valve responds accurately to driver inputs and changing engine demands, contributing to a seamless driving experience.

Synergy with the Fuel Injection System

In conjunction with the fuel injection system, the 4959512 Throttle Valve plays a role in achieving the correct air-fuel ratio. By regulating the amount of air entering the engine, the valve helps the fuel injectors deliver the appropriate amount of fuel, which is necessary for combustion efficiency and emissions control.

Contribution to the Intake Manifold

The 4959512 Throttle Valve’s position affects the pressure within the intake manifold. By controlling the airflow, the valve influences the manifold pressure, which in turn affects the engine’s power output and responsiveness.

Impact on the Exhaust System

Although indirectly, the 4959512 Throttle Valve’s function has implications for the exhaust system. By ensuring efficient combustion, the valve helps reduce the amount of unburnt fuel and other pollutants that enter the exhaust, contributing to a cleaner and more efficient exhaust flow.

Relationship with the Oxygen Sensor

The 4959512 Throttle Valve works in concert with the oxygen sensor to maintain the engine’s air-fuel balance. The sensor provides feedback to the ECU about the exhaust gas composition, which the ECU uses to adjust the valve’s position for optimal combustion.

Influence on the Variable Valve Timing (VVT) System

In engines equipped with Variable Valve Timing (VVT), the 4959512 Throttle Valve’s role becomes even more significant. The valve’s precise control of airflow is essential for the VVT system to adjust valve timing effectively, enhancing engine performance and fuel economy.

Effect on the Turbocharger (if present)

In turbocharged engines, the 4959512 Throttle Valve’s regulation of airflow is crucial for turbocharger operation. By controlling the air entering the engine, the valve helps manage the turbocharger’s boost pressure, ensuring that it operates within safe and efficient parameters.

Conclusion

The Cummins 4959512 Throttle Valve is a key player in the complex symphony of engine components, each interaction contributing to the overall harmony of engine performance and efficiency. Its role in regulating the air-fuel mixture, coordinating with the ECU, and interacting with other engine systems underscores its importance in maintaining optimal engine operation and efficiency.