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Vehicle Emissions

NAPRO SEMS
Smart Emissions Measurement System

Real-world vehicle emissions measurement — instantaneous O₂, CO, CO₂, NO, NO₂, NOx and HC during on-road driving, test tracks or chassis dynamometer cycles. Integrated GPS and automatic reports.

NAPRO SEMS — Smart Emissions Measurement System

Real emissions, measured under real operating conditions

The NAPRO SEMS is installed directly on the vehicle and continuously measures exhaust gas emissions during driving under real traffic conditions — on public roads, development tracks or dynamometer cycles. The system uses data from the engine ECU to estimate total exhaust gas mass, eliminating complex flow measurement systems and producing results comparable to those obtained with PEMS equipment.

The integrated GPS records the route driven and collects vehicle performance data in real time. Instantaneous emissions and total and distance-averaged values are displayed on the connected laptop and consolidated into a complete report at the end of the test.

  • Measurement of O₂, CO, CO₂, NO, NO₂, NOx and HC
  • Tests on public roads, test tracks or chassis dynamometer
  • Integrated GPS — route and performance tracking
  • Uses ECU data to estimate exhaust gas mass
  • Results comparable to PEMS equipment
  • Real-time monitoring via laptop
  • Complete emissions and performance report
  • Optional EMROAD software for route validation

Technical Specifications

Dimensions 290 × 300 × 310 mm (W × H × D)
Power supply 12 VDC or 110/220 VAC — 60 Hz
O₂ 0 to 25%
CO 0 to 15%
CO₂ 0 to 20%
NO 0 to 5,000 ppm
NO₂ 0 to 1,000 ppm
HC 0 to 20,000 ppm
GPS Integrated
Additional sensors Temperature and humidity
Optional accessory FID analyser for precision HC measurement
Optional software EMROAD — route validation
NAPRO SEMS installed on vehicle NAPRO SEMS — GPS and laptop in use NAPRO SEMS — complete system

Applications

Engine development

Assessment of actual emission behaviour during driving under different traffic conditions and usage profiles.

Chassis dynamometer

Emissions measurement during chassis dynamometer cycles as a complement to bench analysers.

Research and education

Used in research centres and educational institutions for real-world emissions studies and powertrain technology development.

Systems validation

Validation of aftertreatment systems, engine control strategies and emission reduction technologies under real operating conditions.