Bosch nox sensor 2894940

Types of Bosch NOx Sensor 2894940

The Bosch NOx sensor 2894940 detects nitrogen oxides in the exhaust of diesel engines. It comes in different models to match various vehicle specifications and emission requirements. Here are some common types of Bosch NOx sensors:

• Bosch NOx Sensor 1

  This sensor is also known as the upstream NOx sensor. It is placed before the diesel particulate filter. DPF. Its job is to monitor the diesel engine's nitrogen oxide emissions right as they are being generated. By tracking the NOx levels right at the source, this sensor helps ensure that the emissions are kept within the legal limits.

• Bosch NOx Sensor 2

  The second NOx sensor, or the downstream NOx sensor, is installed after the DPF. Its role is to measure the NOx levels in the exhaust after it has passed through the emission control systems. By comparing the readings of the two sensors, the vehicle's engine control unit (ECU) can tell how well the DPF and other emission control parts are working. If the upstream sensor sees more NOx than the downstream sensor, it means the DPF isn't filtering properly and needs cleaning or replacement.

• Bosch NOx Sensor 2894940

  This specific sensor is designed for heavy-duty trucks and commercial vehicles that have diesel engines. It is built to meet the stricter Euro 6 emission standards that limit NOx emissions to 0.4 grams per kilowatt-hour. The Bosch 2894940 NOx sensor uses advanced sensing technology, like high-precision ceramics and special coatings, to accurately measure low levels of NOx. This helps the engine management system inject the right amount of urea in the SCR system to meet the Euro 6 emission rules. Retrofitting older trucks with SCR systems and this NOx sensor can significantly reduce their NOx pollution.

• Bosch Heavy-Duty NOx Sensors

  Bosch also makes NOx sensors tailored for other commercial vehicles and heavy-duty applications. These sensors are ruggedized to handle the higher loads and stresses of bigger vehicles. They also have enhanced filtering to deal with the dirt and contaminants found in heavy-duty vehicle exhaust. Key features include robust packaging, advanced materials for longer sensor life, and improved measurement accuracy under heavy-duty operating conditions.

Specifications and Maintenance of bosch nox sensor 2894940

The specifications of the Bosch NOx sensor 2894940 help users understand its capabilities so they can select the right sensor for their needs.

• Signal Type

  The sensor uses a digital signal to communicate with the control unit. This allows for accurate and reliable transmission of information about NOx levels.

• Operating Voltage

  The sensor operates on a voltage of 7 to 16 V. This provides the energy needed for its operation while ensuring compatibility with various vehicle control systems.

• Current Consumption

  The current consumption of the sensor is 10 mA. This ensures efficient operation and reduces the load on the vehicle's electrical system.

• Measuring Range

  The sensor detects NOx concentrations between 0 and 2000 ppm (parts per million). This wide measuring range allows for precise monitoring of nitrogen oxides emissions in different operating conditions.

• Response Time

  The sensor has a quick response time of 100 ms (milliseconds). This ensures timely and accurate detection of changes in NOx levels, allowing for real-time adjustments in the vehicle's emission control system.

• Operating Temperature

  The sensor is designed to function optimally at temperatures ranging from -40 to 850 °C. This wide operating temperature range ensures reliable performance even in extreme environmental conditions.

• Communication Protocol

  The sensor employs a standard protocol for communication with the control unit. This facilitates seamless integration and compatibility with various vehicle systems.

• Physical Dimensions

  The sensor has a compact size, measuring 80 mm in length, 40 mm in width, and 20 mm in height. Its small footprint allows for easy installation in limited space within the vehicle.

• Weight

  The sensor weighs approximately 150 g. Its lightweight construction contributes to the overall efficiency and performance of the vehicle.

• Electromagnetic Compatibility (EMC)

  The sensor is designed to be resistant to electromagnetic interference, ensuring reliable operation even in the presence of electromagnetic fields generated by other vehicle components.

Proper maintenance of the Bosch NOx sensor 2894940 is crucial to ensure its longevity and accurate performance. Here are some general maintenance tips:

• 1. Regular Visual Inspection: Perform regular visual inspections of the sensor and its wiring harness to check for any signs of physical damage, wear, or corrosion. Address any issues promptly to prevent sensor failure.
• 2. Keep it Clean: Keep the sensor and its surroundings clean and free from excessive dirt, oil, or contaminants. Avoid using aggressive cleaning agents or methods that may damage the sensor.
• 3. Follow Service Intervals: Adhere to the manufacturer's recommended service intervals for vehicle maintenance. During maintenance, ensure that the vehicle's emission control system is checked, and any fault codes related to the sensor are addressed.
• 4. Use Genuine Parts: When replacing any components related to the NOx sensor, such as the control unit or exhaust system parts, use genuine Bosch or OEM-approved parts. This ensures compatibility and reliability.
• 5. Avoid Modifications: Do not modify or tamper with the vehicle's emission control system, including the NOx sensor. Any modifications can affect the sensor's performance and may lead to increased emissions and potential legal issues.
• 6. Professional Diagnosis: If there are any issues or fault codes related to the NOx sensor, have it diagnosed and repaired by a qualified mechanic or authorized Bosch service center. They have the expertise and specialized tools to accurately diagnose and troubleshoot sensor-related problems.

How to choose Bosch NOx sensor 2894940

When choosing a NOx sensor for a vehicle, there are several key factors to consider to ensure the right sensor is selected for optimal performance and compatibility. Here are some of the key considerations:

• Vehicle Compatibility

  It is important to ensure that the NOx sensor is compatible with the make, model, and engine type of the vehicle. This guarantees proper fitment and functionality. Also, check the vehicle's emission control system specifications to ensure compatibility with the selected NOx sensor.

• Quality and Reliability

  Quality and reliability are key factors to consider when choosing an NOx sensor. Go for sensors from reputable manufacturers known for quality products. Quality NOx sensors offer consistent performance and durability, which reduces the need for frequent replacements. Also, quality sensors provide accurate measurements of nitrogen oxides, ensuring that the vehicle's emission control system functions optimally and meets environmental standards.

• Warranty and Support

  Consider the warranty offered by the supplier or manufacturer. A solid warranty demonstrates confidence in the product's quality and performance. Additionally, consider the availability of customer support and technical assistance in case of issues or inquiries regarding the NOx sensor.

• Price

  Price is an important consideration when choosing a NOx sensor, but it should not be the sole determining factor. While it is tempting to go for the cheapest option, prioritize quality and reliability. A slightly higher initial investment in a quality sensor can lead to long-term savings through improved fuel efficiency, reduced emissions, and decreased risk of sensor failure.

• Installation

  Some NOx sensors are easy to install and can be done as a DIY project. Others may require professional installation. Consider the required installation method and choose a sensor that matches the desired level of expertise and convenience.

• Performance and Reviews

  Check online reviews and feedback from other customers who have used the same NOx sensor. This can provide valuable information about the sensor's performance, reliability, and any potential issues.

How To DIY and Replace Bosch Nox Sensor 2894940

Changing the NOx sensor is a straightforward process. With the right tools and a basic understanding of automotive electronics, one can replace the sensor. To replace the Bosch NOx sensor, follow the steps below:

Tools Needed

• Socket wrench set
• Torx screwdriver set
• Electrical connector tool
• New NOx sensor
• Torque wrench

Steps

• 1. Start by turning off the engine and letting it cool down.
• 2. Locate the NOx sensor using the vehicle's service manual.
• 3. Use a socket wrench to remove the sensor from the exhaust system.
• 4. Disconnect the electrical connector using a connector tool.
• 5. Install the new sensor by connecting the electrical connector and tightening the bolts.
• 6. Use a torque wrench to tighten the sensor to the manufacturer's specifications.
• 7. Turn on the engine and check for any warning lights or error codes.

It is essential to follow the manufacturer's instructions when replacing the NOx sensor. Ensure that the new sensor is compatible with the vehicle's make and model.

Q and A

Q1: What vehicles are compatible with the Bosch NOx sensor 28949440?

A1: The sensor is designed for heavy-duty trucks and commercial vehicles with Euro 6 diesel engines. These vehicles meet stringent Euro 6 emission standards and are typically used for long-haul transportation and freight services.

Q2: What is the role of the Bosch NOx sensor 28949440 in a vehicle's emission control system?

A2: The NOx sensor plays a crucial role in monitoring and reducing nitrogen oxide emissions from diesel engines. It detects and measures the concentration of nitrogen oxides in the exhaust gas. Based on the NOx readings, the vehicle's engine control unit (ECU) adjusts the injection of urea (AdBlue) into the exhaust system. This urea helps to convert NOx into harmless nitrogen and water vapor through a chemical reaction.

Q3: Where is the Bosch NOx sensor 28949440 located in a vehicle?

A3: The NOx sensor is installed in the vehicle's exhaust system, typically downstream of the engine and diesel particulate filter (DPF). Its location ensures accurate measurement of NOx emissions before they are released into the atmosphere.

Q4: Can the Bosch NOx sensor 28949440 be used in vehicles with earlier Euro 5 emission standards?

A4: No, the Bosch NOx sensor 28949440 is specifically designed for vehicles meeting Euro 6 emission standards. For Euro 5 compliant vehicles, other NOx sensors tailored to Euro 5 standards should be used.

Q5: What are the key features of the Bosch NOx sensor 28949440 that make it suitable for emission control in heavy-duty vehicles?

A5: The sensor is highly sensitive and accurate, allowing precise detection of low-level NOx emissions. Its robust design ensures reliability and durability, even in harsh exhaust environments. The sensor's fast response time enables real-time NOx monitoring, allowing quick adjustments to the urea injection system. It helps optimize the performance of Selective Catalytic Reduction (SCR) systems, ensuring compliance with strict Euro 6 emission regulations.