Engine Exhaust Particle Counters

Measuring particle number in engine exhaust requires instrumentation that maintains fidelity under heat, vibration, and rapidly changing conditions. Engine exhaust particle counters are engineered to handle these demands while delivering fast, repeatable data that helps researchers understand formation, transformation, and control of particles in combustion systems.

Key capabilities:

• High time resolution: Track rapid transients during cold starts, accelerations, and aftertreatment events.
• Robust sampling: Heated lines, controlled dilution, and optional volatile removal help maintain representative samples.
• Broad compatibility: Integrate with dilution tunnels, CVS systems, and complementary analyzers for comprehensive test stands.
• Data integrity: Traceable calibrations and stable baselines support study-to-study comparability and method development.

Use cases:

• Aftertreatment evaluation for diesel and gasoline systems, including filter and catalyst studies.
• Alternative fuel and hybrid powertrain research with detailed particle behavior insights.
• Off-road, marine, and stationary engine testing requiring flexible sampling approaches.
• Regulatory and pre-compliance research where consistent, high-quality data supports decision-making.

Selection checklist:

• Determine required time resolution and expected concentration ranges.
• Plan for sample conditioning: heating, dilution ratios, and volatile removal as appropriate.
• Verify connectivity and synchronization with existing emission analyzers and dynamometer systems.
• Consider portability and ruggedization needs for on-vehicle or field deployments.

Engine exhaust particle counters help programs move from hypothesis to validated results, enabling faster iteration on combustion strategies, fuel choices, and aftertreatment designs. With real-time insight into particle number dynamics, teams can pinpoint trade-offs, optimize control strategies, and publish confident, data-driven findings.