Accurate Partial-Flow Dilution
The MDLT-ONE samples a controlled portion of the total exhaust flow instead of processing the complete exhaust volume.
- Dilutes sampled exhaust with HEPA-filtered air
- Maintains controlled flow through particulate filters
- Supports proportional sampling with a constant split ratio
- Supports fixed dilution-ratio and fixed-flow operation
- Provides real-time control using an exhaust-flow signal
- Can use a previously recorded exhaust-flow pattern
- Supports diluted-gas flow rates from 25 to 80 L/min under specified reference conditions
- Confirms dilution-ratio accuracy using CO2 measurement
- Calculates PM mass results using integrated flow and dilution data
Fast Control During Transient Testing
Rapid changes in engine operation can produce equally rapid changes in exhaust flow. The MDLT-ONE combines high-precision venturi flow measurement with a piezo-actuated valve to respond to these changing conditions.
- Fast flow-control response during transient operation
- Accurate control of the proportional sampling ratio
- Consistent filter-flow management
- Suitable for transient engine and vehicle test cycles
- Supports synchronization with compatible exhaust-flow measurement systems
Flow-Weighted Sampling
Flow-weighted sampling allows particulate matter from multiple phases of an FTP test to be collected on a single filter.
- Adjusts filter sampling flow according to phase-weighting targets
- Supports consistent filter-face velocity across the test phases
- Reduces the number of separate filter-weighing procedures
- Eliminates some manual weighting calculations
- Helps improve workflow efficiency for multi-phase testing
Automatic Filter Handling
An optional automatic filter changer helps laboratories run extended test sequences with less operator intervention.
- Supports as many as 28 tests without manual filter replacement
- Can be installed within the main equipment rack
- Reduces interruptions between tests
- Supports automated and unattended test sequences
- Helps maintain a compact system footprint
Automatic Calibration
The MDLT-ONE can automatically compare its two venturi flow meters by flowing air through them in series.
- Identifies differences between the venturi measurements
- Applies software correction to compensate for the difference
- Supports repeatable system-quality checks
- Can be incorporated into an automated test template
- Reduces manual calibration steps
Compact, Flexible Installation
The heated filter system and flow controllers are integrated into one cabinet.
- Single-rack design reduces equipment footprint
- Swiveling tunnel connection supports flexible positioning
- Suitable for engine and vehicle test-cell layouts
- Up to six filter lines, depending on configuration
- Supports primary and backup filter arrangements
- Available with different filter-holder configurations
- Optional dilution-air conditioning and compressed-air equipment
Integrated with HORIBA ONE PLATFORM
As part of HORIBA ONE PLATFORM, the MDLT-ONE provides a consistent operating environment across compatible HORIBA measurement systems.
- Operate compatible systems through a common user interface
- Centralize equipment control, status information and system messages
- Coordinate the MDLT-ONE with exhaust-flow, emissions-analysis and test-automation systems
- Incorporate calibration and quality checks into automated test sequences
- Support consistent operating procedures across laboratories and test cells
- Expand the measurement system as testing requirements evolve
- Improve continuity between measurement, automation and data-management workflows
Discover HORIBA ONE PLATFORM
Applications
Engine and Vehicle PM Emissions Measurement
The MDLT-ONE can be combined with compatible exhaust-flow, particle-measurement and test-automation systems to support integrated PM emissions testing.
- Light- and heavy-duty engine testing
- Chassis-dynamometer vehicle testing
- Transient emissions testing
- Gravimetric particulate-matter measurement
- Engine certification and development
- Vehicle certification and development
- Integration with particle-number measurement systems
- Automated test-cell operation
Example MDLT-ONE configuration for integrated particulate-matter and particle-number emissions measurement.
Engine and Aftertreatment Research and Development
The MDLT-ONE supports particulate sampling at different locations within an engine and aftertreatment test system.
- Evaluate particulate emissions before and after a catalyst
- Investigate diesel particulate filter performance
- Compare partial-flow and full-flow dilution measurements
- Analyze particulate behavior during transient operation
- Support aftertreatment calibration and development
- Correlate PM results with engine and test-cell data
- Compare alternative fuels and combustion strategies
Example measurement arrangement for engine, catalyst and diesel particulate filter research and development.
Supported Emissions Regulations and Test Methods
The MDLT-ONE supports particulate-matter testing associated with the following emissions regulations and test procedures. Applicability may depend on the system configuration and specific testing requirements. Please contact HORIBA to confirm the appropriate configuration for your application.
| Country or Region | Vehicle or Equipment Category | Regulation or Test Method |
|---|
| UN | Heavy-duty vehicles (HDV) | UN GTR No. 4 (WHTC) |
| Non-road mobile machinery (NRMM) | UN GTR No. 11 (NRTC) |
| European Union | Heavy-duty vehicles (HDV) | Euro VI |
| Non-road mobile machinery (NRMM) | Stage V |
| United States | Light-duty vehicles (LDV) | 40 CFR Part 1066 |
| Heavy-duty vehicles (HDV) | 40 CFR Part 1065 |
| Non-road mobile machinery (NRMM) | 40 CFR Part 1065 |
| Japan | Heavy-duty vehicles (HDV) | Attachment 41 |
| Non-road mobile machinery (NRMM) | Attachment 43 |
This table provides a general overview of supported emissions regulations and test methods. Please contact your HORIBA representative to confirm regulatory applicability and system requirements.
