SAE J2847 2 Plug in Hybrid Communication EMC Testing
The SAE J2847-2 standard for Plug-in Hybrid Electric Vehicle (PHEV) communication is a critical tool in ensuring the robust electromagnetic compatibility (EMC) of modern vehicles. This standard addresses the unique challenges posed by the integration of electric components into traditional automotive systems, which can lead to interference issues that affect vehicle performance and safety.
The SAE J2847-2 protocol defines a communication method between the PHEV’s on-board diagnostic (OBD) system and external devices. This ensures reliable data exchange during testing and operation. The standard aims to minimize electromagnetic interference (EMI), ensuring that all components of the vehicle communicate effectively without causing or being affected by unwanted signals.
Understanding the importance of EMC in PHEVs is crucial for automotive manufacturers, as it directly impacts safety, performance, and compliance with international regulations. EMC testing under SAE J2847-2 ensures that a vehicle’s communication systems function correctly even when exposed to various electromagnetic environments.
The testing process involves simulating real-world conditions where the PHEV interacts with other electronic devices or systems. This includes tests for conducted emissions, radiated emissions, and immunity to electromagnetic interference. By adhering to SAE J2847-2 standards during development and production, manufacturers can ensure that their vehicles meet the stringent requirements of global regulatory bodies.
The testing procedure typically involves setting up a controlled environment where the vehicle’s communication system is subjected to various levels of electromagnetic disturbance. This helps identify any potential issues early in the development process, allowing for necessary adjustments before mass production begins.
Compliance with SAE J2847-2 not only ensures that vehicles meet regulatory requirements but also enhances consumer confidence by demonstrating a commitment to quality and safety. Automotive manufacturers can benefit from this standard by reducing product recalls, improving brand reputation, and ensuring long-term reliability of their products.
Why It Matters
The importance of EMC testing cannot be overstated in the context of PHEVs. As these vehicles incorporate advanced electronics to manage energy flow between the electric and internal combustion engines, they are particularly susceptible to electromagnetic interference (EMI). This can lead to malfunctions or failures that could compromise both vehicle performance and safety.
SAE J2847-2 specifically targets communication systems within PHEVs, ensuring that these critical components operate seamlessly. Proper EMC testing under this standard helps prevent issues such as:
- Data corruption during transmission
- Voltage fluctuations affecting the onboard diagnostic system (OBD)
- Interference with other vehicle systems due to EMI
Inadequate EMC testing can result in costly repairs, reduced product lifespan, and potential safety hazards. By adhering to SAE J2847-2, manufacturers ensure that their vehicles are robust against these challenges, thereby enhancing overall vehicle reliability.
Moreover, compliance with this standard is essential for meeting international regulatory requirements. As PHEVs become more prevalent on roads worldwide, adherence to global standards like SAE J2847-2 ensures seamless interoperability across different markets and jurisdictions.
Applied Standards
| Standard | Description |
|---|---|
| SAE J2847-2 | Communication protocol for Plug-in Hybrid Electric Vehicles (PHEVs) ensuring electromagnetic compatibility. |
| ISO 16750-3:2019 | Electromagnetic compatibility of road vehicles—Part 3: Emission and immunity tests. |
| Test Procedure | Description |
|---|---|
| Conducted Emissions Test | Measures the frequency spectrum of conducted emissions from the vehicle’s communication systems. |
| Radiated Emissions Test | Evaluates the radiated emissions from the vehicle under specified test conditions. |
Benefits
- Ensures reliable communication between PHEV systems and external devices
- Prevents data corruption during transmission, enhancing vehicle performance
- Avoids voltage fluctuations affecting the OBD system
- Reduces interference with other vehicle systems due to EMI
- Maintains compliance with international regulatory requirements
- Enhances brand reputation through demonstrated commitment to quality and safety
- Improves long-term reliability of the vehicle, reducing product recalls
