SOURCES SOUGHT
36 -- 4WD Dynamometer Test Cell
- Notice Date
- 9/19/2002
- Notice Type
- Sources Sought
- Contracting Office
- Environmental Protection Agency, Office of Acquisition Management, EPA/Ohio, 26 West Martin Luther King Drive, Cincinnati, OH, 45268
- ZIP Code
- 45268
- Solicitation Number
- Reference-Number-4WD-Dyno
- Point of Contact
- SCOTT THARP, CONTRACT SPECIALIST, Phone (513)487-2092, Fax (513)487-2107,
- E-Mail Address
-
THARP.SCOTT@EPA.GOV
- Description
- In accordance with FAR Part 10 procedures the EPA is seeking sources to provide information regarding 4WD Dynomometer Test Cells. The Laboratory Operations Division at NVFEL is currently working on plans to potentially renovate the EPA old truck chassis cell (24ft. x 25ft. x 75ft.) to become a medium duty 4WD test cell that will also integrate many functions for Tier 2 testing of LDVs. In general EPA is trying to configure a room to position a vehicle in the middle of the air flow envelope and sampling systems. In essence, EPA wants to move the rolls to the vehicle and have the other systems such as fans, exhaust flow measuring devices, and samplers move in a smaller area to minimize connector lengths. EPA plans to replace or expand the subfloor pit to a size of approximately 55ft. x 16ft. x 8ft. deep. EPA would like to have clear space in the pit to hang a subfloor, full flow, dilution transport piping system (8in. or 12in.) from the deck structure. The deck frames and vehicle track area supports are made from 2in. thick by .25in. wall structural box beams in 8in., 6in., 4in. widths and solid 3in.x2in. and 2in.x2in. pieces. These 29in. track logs cover a 25in. wide roll and wheel frame spacers are manually moved to accommodate any wheelbase. This has proven adequate and is less complicated and more space effective than many rolling or sliding floor designs. One scheme is to have both dynos (front and rear) move to facilitate the fixed vehicle location for all FWD, RWD, and 4WD vehicles. The ability to move both dynos to within a 52in. center distance would also enable the possibility of testing a tandem axle. This is a secondary feature, but one on which the EPA would like input as to the potential issues. EPA also plans to include a mezzanine structure above the test area for supporting equipment and an xyz trolley(s) for the sampling systems or exhaust meters. This structure could also support lights and ducts, and sprinkler systems to optimize the cell layout. The specific questions below summarize some of the information the EPA seeks. If these can be answered from a website, a product brochure, or a computer .pdf file, please send us a copy or reference. If any digital pictures are available from existing test sites and systems, these would be very useful to illustrate the options. 1. For a 48in. motor in the middle MDV dyno, what are the following values? EPA has assumed an inertia capacity of 1000-14,000 lbs and 109in. width. a. Rated Speed and Force b. Base mechanical inertia c. Maximum horsepower d. Maximum force for 20 seconds e. Amperage requirement at 480 3 phase f. Size of power converter cabinets and isolation-transformers g. Preferred location of power converter with respect to dyno (maximum distance?) h. Width and depth between the roll and motor and shaft for the deck frame structure. Maximum vehicle axle weight that can cross the deck and rolls. i. The weight of the machine and the recommended inertia block configuration j. The locations of cooling fans and cooling airflow requirements k. The maximum amount of heat rejection expected in BTU/min l. The locations and requirements for the electrical wires that need to move with the machine. 2. What type of restraint system is recommended for MDV applications? What types of facility pit preparations should be considered? Can the dyno deck structure sit on a 12in. deep concrete ledge with a 4x4 angle iron cast perimeter? 3. What technical approach is used for 4WD loading? How does the system handle force response and roll synchronization at near zero speeds? What is the transient force response and speed synchronization that can be obtained on each machine for an acceleration rate of 8 mph/sec? How well does the 4WD simulation mode work for hybrid vehicles where one axle may be driving and the other axle may be driven? 4. Does your company offer an integrated road speed modulated vehicle cooling fan? If so, what are its specifications and sizes? 5. What interfaces and data logging options are integrated with the system to get vehicle data into the dyno controller or to transfer test data out to other systems for post test analysis? What protocols are utilized? 6. Does your organization have any torque wheel data comparing track loading to that experienced on the rolls for 2WD or 4WD vehicles? This information will help EPA prepare a better specification and assist in the design of the facility infrastructure. Please provide as much information as possible regarding this inquiry. Any other information not specifically requested here and you deem as necessary may be submitted also. Interested parties should submit all information to Scott Tharp at the above address by Fax (513) 487-2107 or by E-mail Tharp.Scott@epa.gov. Information should be submitted by close of business October 1, 2002.
- Place of Performance
- Address: U.S. EPA - NVFEL, 2565 Plymouth Rd., Ann Arbor, MI
- Zip Code: 48105
- Country: US
- Zip Code: 48105
- Record
- SN00171478-W 20020921/020919213850 (fbodaily.com)
- Source
-
FedBizOpps.gov Link to This Notice
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