Emissions Compliance Analyzer for Homologation Engineers
Analyze emissions test data and generate compliance action plans for Euro 6, EPA, China VI
What You Can Do
You can upload emissions test data (WLTP, RDE, OBD, dyno bench results) and receive instant compliance gap analysis against Euro 6, EPA Tier 3, and China VI standards. The skill traces non-compliance to specific root causes—whether calibration, aftertreatment hardware, or OBD strategy—and generates targeted troubleshooting sequences with quantified remediation pathways and supporting calculations that satisfy notified body audit requirements.
Features
analyzes against Euro 6, EPA Tier 3, China VI, and RDE protocols simultaneously
generates targeted diagnostic sequences for NOx, PM, CO, HC, and other regulated emissions
maps non-compliance through engine calibration, aftertreatment systems, fuel strategy, and OBD logic
prioritizes remediation options with compliance probability estimates and implementation feasibility
identifies systematic vs. random test variation to determine if outliers indicate hardware or calibration issues
quantifies compliance impact of SCR, DPF, TWC, and fuel system changes
generates structured reports and technical justifications for notified body submissions
estimates compliance probability before physical recalibration testing
Example Output
Example 1: Euro 6 NOx Exceedance Analysis
- Test Result: 168 mg/km (limit: 168 mg/km, 10% margin: 151 mg/km)
- Compliance Status: ⚠️ Marginal — within type approval but exposed to retest risk
- Root Cause: SCR catalyst efficiency drops 8% in urban cold-start phase (0–600s)
- Recommended Actions:
- Increase SCR inlet temperature target by 20°C (calibration, 3-day effort)
- Verify urea dosing accuracy ±2% (5-day validation)
- Probability of compliance after action: 87%
Example 2: RDE Test Scatter Review
- Trip 1: 145 mg/km | Trip 2: 189 mg/km | Trip 3: 156 mg/km
- Statistical Analysis: ✓ Within acceptable scatter (σ = 18 mg/km, normal distribution)
- Outlier Determination: Trip 2 is 2.4σ above mean—likely ambient temperature effect, not systematic
- Recommendation: Retest in controlled thermal conditions; current hardware acceptable
Example 3: Aftertreatment Variant Impact
- Current (Baseline SCR): 162 mg/km NOx
- Proposed (Larger SCR + ASC): 138 mg/km NOx (estimated)
- Compliance Margin: Improves from 4% below limit to 18% below limit
- Implementation Cost-Benefit: Hardware cost offset by single-pass approval probability (+34%)
What's Included
- SKILL.md instruction file with emissions standards framework, test data interpretation protocols, and root cause mapping logic:
- Compliance Gap Analysis Template: structured worksheet for WLTP, RDE, and OBD test result assessment
- Troubleshooting Decision Tree: flowchart for isolating calibration vs. hardware vs. OBD strategy failures
- Corrective Action Plan Framework: prioritized remediation checklist with feasibility scoring and timeline estimates
- Regulatory Documentation Checklist: notified body submission requirements by region (EU, EPA, China)
Who It's For
- Homologation engineers planning emissions compliance strategies and recalibration roadmaps
- Powertrain calibration specialists troubleshooting NOx, particulate matter, and hydrocarbon exceedances
- OEM quality assurance teams evaluating emissions test results before notified body submission
- Aftertreatment system engineers assessing SCR, DPF, TWC, and fuel system impacts on compliance
- Regulatory affairs specialists preparing technical justifications and compliance documentation for regulatory review
Best For
- Analyzing preliminary or repeat emissions test failures to identify immediate non-compliance (>10–15% exceedance)
- Troubleshooting systematic failures in specific WLTP phases (urban, rural, motorway) or RDE test conditions
- Evaluating whether non-compliance stems from hardware design, engine calibration, or OBD diagnostic strategy
- Planning recalibration efforts with quantified compliance probability before undertaking expensive physical testing
- Documenting compliance pathways and technical justifications for notified body audit submissions
- Comparing variant hardware (SCR size, DPF coating, fuel system) to forecast compliance probability improvement
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