Accurate Diluted-Exhaust Sampling
CVS-ONE provides controlled dilution and representative sampling of vehicle or engine exhaust for emissions measurement and mass-emissions calculation.
- Critical Flow Venturi flow control
- Stable dilution-flow measurement throughout the test cycle
- Configurations for different vehicle, engine and exhaust-flow requirements
- Separate main sampling lines available for flexible system design
- Supports integration with MEXA-ONE and compatible emissions analyzers
- Suitable for low-emission measurement applications
Flexible Flow and Sampling Configurations
Different powertrains, test cycles and exhaust-flow ranges require different dilution and sample-storage arrangements. CVS-ONE can be configured to match the laboratory’s testing requirements.
- Multiple dilution-flow configurations available
- Maximum standard flow rates from 20 to 40 m³/min, depending on model
- Optional specifications available for higher-flow engine applications
- Manual single-venturi and automatic multi-venturi configurations
- Heat-exchanger configurations available
- Additional sampling bags can be installed after initial system installation
- Supports a maximum of 20 bags, depending on configuration
- Suitable for gasoline, diesel and alternative-fuel testing
Final flow capacity and system arrangement should be confirmed for each application.
Compact Design for Flexible Test-Cell Layout
CVS-ONE reduces the space required for diluted-exhaust sampling equipment, giving laboratories more flexibility when planning new installations or updating existing test cells.
- Up to 65% less system volume than previous HORIBA systems
- Up to 70% smaller footprint
- Compact Exhaust Sampling Unit design
- Bag Sampling Unit can be integrated into the MEXA-ONE cabinet
- Shorter connections between sampling and analysis equipment
- Improved equipment accessibility and test-cell layout flexibility
The reduction figures depend on the system specification, including the Exhaust Sampling Unit and heat-exchanger configuration.
Low-Emission Measurement and Contamination Control
At very low emission levels, residual gas, sampling-line contamination and background conditions can significantly influence results. CVS-ONE includes functions intended to help engineers identify and reduce these effects.
- Short gas-line arrangement between the bag-sampling unit and analyzers
- Enhanced sampling-line purge functions
- Automatic system blank or null testing
- Historical management of system blank results
- Water-monitor option to support dilution-factor selection
- Low-concentration CO2 measurement options designed to minimize water interference
- System quality-check and performance-history functions
- Optional automatic propane-check capability
Fuel-Consumption Testing for Hybrid Powertrains
CVS-ONE supports fuel-consumption evaluation for vehicles whose engines may start and stop repeatedly during a test cycle.
- Supports hybrid and plug-in hybrid vehicle testing
- Bag sampling can be coordinated with engine operating conditions
- Supports up to five bag pairs for continuous testing, depending on configuration
- Measurement results can be evaluated with compatible analyzer and automation systems
- Quality-check history supports ongoing verification of system performance
Flexible Bag Sampling for Complex Test Cycles
- Configure bag combinations according to the test procedure
- Add sampling bags after system installation
- Support multi-phase and extended test cycles
- Coordinate bag sampling with vehicle or engine operating states
- Store diluted-exhaust samples for subsequent concentration analysis
Integrated with HORIBA ONE PLATFORM
CVS-ONE uses the same operating environment as compatible HORIBA ONE Series measurement systems.
- Operate CVS-ONE and compatible emissions analyzers from one interface
- View sampling-system and analyzer status from a centralized display
- Monitor system conditions, alarms and operational messages
- Support measurement preparation and system quality checks
- Apply more consistent operating procedures across test cells
- Expand the measurement system as laboratory requirements evolve
- Integrate CVS-ONE into broader emissions measurement and test-automation workflows
HORIBA ONE PLATFORM provides a common environment for equipment operation, system monitoring, maintenance information and laboratory expansion. Integration capabilities depend on the selected equipment and system configuration. Learn more about HORIBA ONE PLATFORM.
HORIBA ONE PLATFORM measurement screen for operating CVS-ONE with MEXA-ONE. | 
HORIBA ONE PLATFORM System View showing the operating condition of connected emissions measurement equipment. |
Applications
CVS-ONE supports diluted-exhaust measurement across a range of certification and development programs.
Regulatory Testing
CVS-ONE can be configured to support vehicle and engine emissions testing conducted according to applicable regional procedures. Required flow range, bag configuration, sampling arrangement, analyzers and automation should be selected according to the applicable regulation and vehicle or engine category.
