Natural Gas Transit Users Group: Assisting Transit Agencies with Natural Gas Bus Technologies
4/1/2005
Transit buses are a key niche market for natural gas vehicles. Increasingly, transit agencies have been choosing natural gas buses as a way to cut air pollution and boost energy security. The Natural Gas Transit Users Group provides information and assistance to transit agencies that are operating or considering acquisition of natural gas transit buses. It is anticipated that this will lead to increased use of natural gas buses, resulting in reduced U.S. petroleum consumption.
Evaluating the Safety of a Natural Gas Home Refueling Appliance (HRA)
4/1/2005
This project evaluated the probability of safety incidents related to use of FuelMaker Corporation's natural gas home refueling appliance, Phill. The results indicate that an individual is 10 times more likely to be struck by lightning than to experience a safety incident resulting from normal use of Phill. The safety evaluation produced an added benefit—FuelMaker incorporated suggestions from the study into its final design of Phill. Home refueling has the potential to increase the availability and convenience of natural gas vehicle refueling infrastructure. It is anticipated that this would lead to more extensive use of natural gas vehicles, resulting in reduced U.S. petroleum consumption.
Clean Cities Alternative Fuel Price Report - March 28, 2005
3/28/2005
This is the fourteenth issue of the Clean Cities Alternative Fuel Price Report, a quarterly newsletter keeping you up to date on the prices of alternative fuels in the U.S. and their relation to gasoline and diesel prices. This issue discusses prices that were gathered from Clean Cities coordinators and stakeholders between March 8 and March 22, 2005, with comparisons to the prices in the previous Price Report, which were collected in November, 2004. The changes in prices from one reporting period to the next can be attributed not only to price volatility, but also to an inconsistent set of respondents. Thus, differences from one report to the next should not be assumed to reflect trends.
Authors: Lott, M.
Peaking of World Oil Production: Impacts, Mitigation, and Risk Management
2/1/2005
The peaking of world oil production presents the U.S. and the world with an unprecedented risk management problem. As peaking is approached, liquid fuel prices and price volatility will increase dramatically, and without timely mitigation, the economic, social, and political costs will be unprecedented. Viable mitigation options exist on both the supply and demand sides but to have substantial impact, they must be initiated more than a decade in advance of peaking.
Authors: Hirsch, R.L.; Bezdek, R.; Wendling, R.
Norcal Prototype LNG Truck Fleet: Final Data Report
2/1/2005
This final data report provides detailed data and analyses related to the report Norcal Prototype LNG Truck Fleet: Final Results, published in July of 2004. It should be used in conjunction with the descriptions, analysis, and conclusions presented in the above-referenced final report to give a complete picture of the evaluation. The detailed data and analyses are divided into four sections:
- Vehicle Systems Descriptions: This section lists the trucks involved in the Norcal evaluation and gives detailed descriptions of the equipment included in the LNG trucks.
- Vehicle Use by Study Group: This section provides a detailed summary of truck use for each of the three truck study groups (LNG, new diesel, and old diesel); these detailed data support the data in the final report, Figure 10 (page 13).
- Fuel Consumption and Fuel Economy: This section provides monthly summaries of fuel consumption and fuel economy by truck and by group for each of the three truck study groups (LNG, new diesel, and old diesel).
- Maintenance Summary: This section provides monthly summaries of maintenance costs by truck and by group for each of two study groups (LNG and new diesel); maintenance costs were not studied for the old diesel trucks.
Authors: Chandler, K.; Proc, K.
Natural Gas Vehicle (NGV) Best Practice Case Study: The Saunders Hotel Group of Boston - Driving Their Guests Towards a Safer Future
1/1/2005
The Saunders Hotel Group has been at the forefront of environmental advances in the hospitality industry for over fifteen years. The Boston-based family business, which owns and operates The Lenox and Copley Square Hotels as well as the Comfort Inn & Suites Boston/Airport, has instituted more than 90 innovative, eco-friendly programs company wide. Their pioneering efforts have demonstrated for hotels worldwide how environmental measures can build customer loyalty and employee productivity while saving hundreds of thousands of dollars.
Clean Cities Alternative Fuel Price Report - November 26, 2004
11/26/2004
This is the thirteenth issue of the Clean Cities Alternative Fuel Price Report, a quarterly newsletter keeping you up to date on the prices of alternative fuels in the U.S. and their relation to gasoline and diesel prices. This issue discusses prices that were gathered from Clean Cities coordinators and stakeholders between November 8 and November 19, 2004, with comparisons to the prices in the previous Price Report, which were collected in June, 2004.
Authors: Lott, M.
Clean Cities Alternative Fuel Price Report - June 29, 2004
6/29/2004
This is the twelfth issue of the Clean Cities Alternative Fuel Price Report, a quarterly newsletter keeping you up to date on the price of alternative fuels in the U.S. and their relation to gasoline and diesel prices. This issue discusses prices that were gathered from Clean Cities coordinators and stakeholders between June 14 and June 25, 2004, with comparisons to the prices in the previous Price Report, which were collected in March, 2004.
Authors: Lott, M.
Development of the High-Pressure Direct-Injected, Ultra Low-NO<sub>x</sub> Natural Gas Engine: Final Report
5/1/2004
This project targeted development of a high-efficiency, low-emission natural gas engine for heavy-duty trucks. Specifically, it targeted the demonstration of a Cummins ISX engine using HPDI natural gas fueling and exhaust gas recirculation (EGR) meeting the following specifications:
- Peak torque of 1,650 ft-lb (2,236 N-m)
- Rated power of 450 hp (335 kW)
- Peak thermal efficiency of 40% with typical diesel part-load efficiency
- NOx emissions of 0.5 g/bhp-hr
- PM emissions of 0.1 g/bhp-hr
- Substitution of diesel with natural gas greater than 90% over the certification cycle
Testing and modeling of an otherwise unmodified Cummins ISX engine with EGR and HPDI fueling indicated that the program goals could not be met with the standard production hardware. Therefore, a turbocharger using a smaller trim compressor and a second EGR cooler were fitted to the engine along with an oxidation catalyst.
Authors: Duggal, V.K.; Pike-Lyford, E.J.; Wright, J.F.; Dunn, M.; Goudie, D.; Munshi, S.
Clean Cities Alternative Fuel Price Report - March 23, 2004
3/23/2004
This is the eleventh issue of the Clean Cities Alternative Fuel Price Report, a quarterly newsletter keeping you up to date on the price of alternative fuels in the U.S. and their relation to gasoline and diesel prices. This issue discusses prices that were gathered from Clean Cities coordinators and stakeholders between March 3 and March 17, 2004, with comparisons to the prices in the previous Price Report, which were collected in December, 2003.
Authors: Lott, M.