Combustion Processes: Engine Emissions

The new Dekati® MPEC+™ (Mobile Particle Emission Counter) is a compact and portable instrument for easy onboard PN-PEMS measurements. At the core of the MPEC+™ is the patented Dekati® ePNC™ particle counting technology, which has been further optimized for fast transient emission measurements.

The MPEC+™ is the device of choice for highly accurate PN-PEMS testing in accordance with RDE requirements. The Dekati® MPEC+™ has been thoroughly tested and verified in some of the harshest driving and climate conditions to make sure it always delivers superb measurement performance.

A cascade impactor with cutpoints of 2.5, 1.0, 0.5 and 0.2 microns and a back-up filter. 

The particles are collected on Ø47 mm filters with sample flow rate of 70 lpm. DGI is typical used in combustion measurements including automotive emission testing, but it is can be applied to any measurements where particles in its operational range exist.

The Dekati® HT-DLPI+ is a version of the DLPI+ that can be heated up to 180°C.  The instrument allows for the direct measurement of heated aerosol samples without the risk of condensation or sample transformations. 

The Aerosol Particle Mass Analyzer (APM 3602) classifies particles by mass, based on the balance between centrifugal force and electrostatic force.  This desktop unit classifies aerosol particles of 0.001 ~ 565 femtograms (Equivalent to approx. 12 ~ 1,008 nm for particle density of 1 g/cm3).   

The APM can be used in the following applications:

• Mass distribution measurements
• Particle density research
• Monodisperse aerosol generation

The Mi3 is a cost-effective, turnkey system for automotive PM measurements in engine dynamometers, chassis dynamometers, and on-board applications.  Utilizing Pegasor M-Sensor technology, the Mi3 can directly measure raw, hot engine emissions without the need for dilution or conditioning, reducing cost, complexity and uncertainty.  

The GMS 141 Gravimetric Measurement System is a heated filter collection system designed to measure oil content in crankcase blow-by aerosols.  A by-pass line allows separators to be brought up to operating conditions prior to filter collection, and a pressure drop measurement across the filter allows consistent mass loading for uniform results.

The FCS 249 is a mobile system for the defined generation of reference and test aerosols. It combines the functions of an aerosol generator, a regulated flow unit and a drying unit. As a result, particle concentrations covering a wide working range can be provided with this system. Setting parameters for various working points can be saved in the system and accessed by the push of a button. In particular, the FCS 249 is suitable for the validation of condensation particle counters (CPC) or electrical aerosol monitors, which are applied for the particle number concentration measurement in exhaust gases of vehicles.

The Dekati® DEED-300 is an aerosol diluter capable of sampling from pressures of up to 1 bar in standard configuration, and up to 10 bars in custom configurations.  Available as a single-stage 4:1 diluter, or as a two-stage 40:1 diluter, it features low losses and good time response.  The DEED-300 can also be heated and is often used in front of additional dilution and sample conditioning devices such as the DEED-100 when measuring high temperature combustion processes.

A simple and cost-effective dilution tool for any dilution task.

Especially designed for use with Dekati instruments, the DAD-100 is very simple to install into any sampling or measurement system. All-stainless steel design makes it also possible to heat the diluter up to 500°C.