Heavy-Duty Engine Dynamometer Laboratory
Heavy-Duty Engine Dynamometer in Test Cell.
CE-CERT's Heavy-Duty Engine Dynamometer Laboratory (HDDL) is designed for a variety of applications including verification of diesel aftertreatment devices, certification of alternative diesel fuels, and fundamental research in diesel emissions and advanced diesel technologies. The engine dynamometer facility support components were provided as a turnkey system by DyneSystems Inc. of Jackson, Wisconsin. CE-CERT's Mobile Emissions Laboratory (MEL) is used in conjunction with this facility for certification type emissions measurements.
Engine Dynamometer Test Cell
The Control Room.
The test cell is equipped with a 450 kW (600 hp) GE Model 42G408AD DC electric dynamometer that was obtained from the EPA's National Vehicle and Fuels Emission Laboratory in Ann Arbor, MI. The dynamometer is capable of testing approximately 85% of the engines used in on-road applications and will primarily be used for engines in the 300- to 600-hp range. The dyno has an effective absorption capacity of 2136 N·m (0–1575 lb·ft) torque from 0 to 2200 rpm.
Bird's eye view of the dynamometer.
To provide temperature and humidity control for the engine intake combustion air, a Dyno Air conditioning system was obtained from Stowe Enterprises of North Carolina. The Dyno Air unit is designed for quick response and stable control under both steady state and transient conditions for engines up to 600 hp. The combustion air system provides air to the engine at a temperature controlled from 20°C to 30°C with an accuracy of ±1°C from setpoint. The system also provides humidity control for the combustion air and controls dew point from 42°F to 60°F. Stowe Enterprises also designed and supplied a system for charge air cooling. This system incorporates an air-to-air heat exchanger and meets the SAE J-1973 standard for supplying conditioned air to turbocharged engines equipped with charge air-cooling.
DyneSystems engine water cooling system.
An engine water jacket cooling system was designed and manufactured by DyneSystems Inc.. This cooling system utilizes a plate and frame heat exchanger and evaporative cooling tower. The system is a dual path design to isolate the engine cooling system path from the evaporative cooling water path. The system has sufficient capacity to control engine water jacket temperatures to manufacturer specifications under all test conditions.
RE-SOL fuel conditioning system.
A fuel measurement and conditioning system was designed and supplied by RE-SOL Inc. of Auburn Hills, MI. This RS561 Diesel Flow Measurement System is designed to measure the fuel consumption of 300- to 600-HP diesel engines. The heart of the system is a recirculation tank, which provides vapor-free fuel to the engine. The conditioning system incorporates an electrical heater and water cooled heat exchanger with solid-state temperature controllers to maintain the specified fuel temperature to the engine within ±1°C of setpoint. A boost pump assures a sufficient priming flow for the engine injection system. A high accuracy Coriolis meter measures the make-up fuel for the recirculation tank. The capacity of the system provides a fuel flow measurement range of 0.4 to 170 kg/hr with an accuracy of ±1% above 1 kg/hr.
Mobile Emissions Laboratory
The Mobile Emissions Laboratory in place outside of the HDDL.
Emissions measurements are performed with the CE-CERT Mobile Emissions Laboratory (MEL) that is situated directly along side the heavy-duty engine dynamometer facility. The MEL is an emissions laboratory constructed within a 53-foot truck trailer that can be used to make CFR-quality emissions measurements of heavy-duty diesel engines/vehicles in stationary or under on-road conditions. The laboratory contains a full dilution tunnel, analyzers for gaseous emissions, and ports for particulate measurements. The MEL is also equipped with a wide range of measurement techniques for full characterization of the diesel exhaust including PM composition, real-time PM, and semi-volatile and PM PAHs, C1-C12 gaseous hydrocarbon species and carbonyls. [MEL drawing]
Contact Information
For further information contact:
Dave Martis
Emissions Lab Manager
Tel: 951-781-5737
E-Mail: ddm@cert.ucr.edu
