Engine Emissions Measurement

The Engine & Emissions Technology group at Exova conducts engine performance and durability programs, emissions development, calibration, exhaust aftertreatment, and certification projects for heavy, medium and light duty engines. Exova also performs production audit testing for engine OEMs in facilities located close to their engine plants. The engine group routinely conducts engine emissions tests to US & European standards. Furthermore, Exova has participated in several correlation programs with engine OEMs and the U.S. EMA (Engine Manufacturer’s Association). The engine tests are accredited to the ISO17025 requirements. Engine and emission tests are increasingly important considering today's environmental issues.

Engine Emissons Measurement

Capabilities include:
The Engine & Emissions Technology group has the capability to perform a wide variety of tests:

Engine development: performance, fuel systems, combustion, and emissions calibration
Emissions development: exhaust aftertreatment systems (DPF, LNT, SCR, etc.)
Emissions Certification to US and European standards
Engine durability and production audit testing

Our state-of-the-art engine and emissions facilities (AVL, Horiba), suitable for engine and emissions development to 2010 EPA standards, include:

Four (4) Transient Emissions Certification test cells with maximum horsepower and torque capacity of 750 hp and 2,500 ft-lb respectively
Seven (7) Development & Durability test cells, some with emissions capability
Full-flow dilution tunnels: standard 18” and 10”
Combustion air systems: variable dew point & temperature
Dilution air systems: HEPA filtered, low humidity & temperature controlled
Real-time emissions measurements of HC, CO, NOx, NO2and CO2
Particulate benches for low PM engines
Five (5) point raw emissions measurement, plus AVL smoke meters
Two (2) high-speed AVL FTIRs for exhaust aftertreatment systems development
High speed in-cylinder combustion analysis system (CAS)
Total particulate analyses including SOF, fuel/lube contribution, sulphates, PAH, nitro-PAH
In addition, we have extensive physical characterization and chemical analyses capabilities

Exova has been servicing the OEMs and Tier 1 & 2 Exhaust Suppliers since 1995. The testing performed typically involves Components, Subsystems, and Full Exhaust Systems. Everything from exhaust flanges, simple and complex tubing geometry, catalytic converters, resonators, mufflers, Diesel Particulate Filters (DPF) and flex couplings can be cycled employing low frequency simple sinusoidal inputs out to 50 Hz. The applied inputs can be configured utilizing a single or multiple hydraulic actuator configuration for uni-axial or multi-axial inputs.

For higher frequency applications, Electro-dynamic (ED) shakers with slip tables that allow three axis testing one axis at a time are employed. Typical inputs include sinusoids, sine on sine, random, saw-tooth, and shaped white noise (PSD) out to 2000 Hz. If field correlation is required, real-time phase related inputs out to 50 Hz. can be developed using acquired field data.

In conjunction with the mechanical inputs simulated exhaust temperatures and extreme field conditions such as cold water spray/quench and contaminants can be integrated into the test configuration.

Exova has the expertise to meet your testing requirements. In addition Exova offers a full array of complimentary services and technical support for your testing needs.

Exova also offers a full range of complimentary expertise and equipment.

Markets Serviced:

Automotive
Commercial Truck & Bus
Off Highway
Military
Motorcycles
Marine

Supporting Capabilities

Instrumentation and Data Acquisition
Data Reduction & Analysis
Root Cause Investigation
Fatigue Life Analysis
Drive File Development
Materials Testing Full Array
Secured Test Areas
Custom and Purpose Built Test Fixtures
Comprehensive Technical Staff for Alternate Test Disciplines

Emblematic Equipment

Servo-Hydraulic Actuators 1.1 to 50.0 Kip Capacity
Furnaces (Qty 7) Ranging from 250,000 to 1,000,000 BTU/hr Capacity
Elector-dynamic Shakers 150 to 11,000 lbf
Agree Chambers - Fixed and Modular -67 to 350° Degrees Fahrenheit