What Fuel Economy Improvement Technologies Could Aid the Competitiveness of Light-Duty Natural Gas Vehicles?

1999 ◽  
Author(s):  
John F. Thomas ◽  
Robert H. Staunton
Keyword(s):  
Natural Gas ◽  
Fuel Economy ◽  
Light Duty ◽  
Fuel Economy Improvement ◽  
Natural Gas Vehicles

Feasibility Study of Medium- and Heavy-Duty Compressed Renewable/Natural Gas Vehicles in Canada

2020 ◽  
pp. 1-41
Author(s):  
Wahiba Yaïci ◽  
Hajo Ribberink
Keyword(s):  
Natural Gas ◽  
Feasibility Study ◽  
Fuel Economy ◽  
Economies Of Scale ◽  
Fuel Cycle ◽  
Motor Fuel ◽  
Analysis Tool ◽  
Heavy Duty ◽  
Compressed Natural Gas ◽  
Natural Gas Vehicles

Abstract Concerns about environmental degradation and finite natural resources necessitate cleaner sources of energy for use in the transportation sector. In Canada, natural gas (NG) is currently being appraised as a potential alternative fuel for use in vehicles for both medium and heavy-duty use due to its relatively lower costs compared to that of conventional fuels. The idea of compressed natural gas vehicles (CNGVs) is being mooted as inexpensive for fleet owners and especially because it will potentially significantly reduce harmful emissions into the environment. A short feasibility study was conducted to ascertain the potential for reduced emissions and savings opportunities presented by CNGVs and renewable NGVs (RNGVs) in both medium and heavy-duty vehicles. The study which is discussed in the present paper was carried out on long-haul trucking and refuse trucks respectively. Emphasis was laid on individual vehicle operating economics and emissions reduction, and the identification of practical considerations for both the individual application and CNGVs/RNGVs as a whole. A financial analysis of the annual cost savings that is achievable when an individual diesel vehicle is replaced with a CNG vehicle was also presented. This paper drew substantial references from published case studies for relevant data on maintenance costs, fuel economy, range, and annual distance traveled. It relied on a summary report from Argonne National Laboratory's GREET (Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation) [18] for its discussion on relative fuel efficiency penalties for heavy-duty CNGVs. The fuel cost figures were mostly drawn from motor fuel data of the Ontario Ministry of Transportation, since the Ministry is one of the few available sources of compressed natural gas fuel prices. Finally, the GHGenius life-cycle analysis tool [19] was employed to determine fuel-cycle emissions in Canada for comparison purposes. The study produced remarkable findings. Results showed that compared to diesel-fuelled vehicles, emissions in CNG heavy-and-medium-duty vehicles reduced by up to 8.7% (for well-to-wheels) and 11.5% (for pump-to-wheels) respectively. Overall, the most beneficial application appeared to be long-haul trucking based on the long distances covered and higher fuel economy achieved (derived from economies of scale), while refuse trucks appeared to have relatively marginal annual savings. However, these annual savings are actually a conservative estimate, which will ultimately be determined by a number of factors that are likely to be predisposed in favour of NG vehicles. Significantly, the prospect of using RNG as fuel was found to be a factor for improving the value proposition of refuse trucks in particular, certainly from an emissions standpoint with a reduction of up to 100%, but speculatively from operational savings as well.

scholarly journals Performance, Fuel Economy, and Economic Assessment of a Combustion Concept Employing In-Cylinder Gasoline/Natural Gas Blending for Light-Duty Vehicle Applications

2019 ◽  
Vol 12 (3) ◽  
Author(s):  
Thomas Wallner ◽  
Michael Pamminger ◽  
Riccardo Scarcelli ◽  
Christopher Powell ◽  
Severin Kamguia Simeu ◽  
...  
Keyword(s):  
Natural Gas ◽  
Fuel Economy ◽  
Economic Assessment ◽  
Light Duty ◽  
Light Duty Vehicle

Fuel Economy Improvement Strategy for Light Duty Hybrid Truck Based on Fuel Consumption Computational Model Using Neural Network

2008 ◽  
Vol 41 (2) ◽  
pp. 10719-10725 ◽  
Author(s):  
Masahiro Suzuki ◽  
Seiichi Yamaguchi ◽  
Tomohiko Araki ◽  
Pongsathorn Raksincharoensak ◽  
Masao Yoshizawa ◽  
...  
Keyword(s):  
Neural Network ◽  
Computational Model ◽  
Fuel Consumption ◽  
Fuel Economy ◽  
Improvement Strategy ◽  
Light Duty ◽  
Fuel Economy Improvement

FUEL ECONOMY IMPROVEMENT OF LIGHT DUTY HYBRID TRUCK IN VEHICLE FOLLOWING SITUATION

2007 ◽  
Vol 40 (10) ◽  
pp. 447-453
Author(s):  
Masahiro Suzuki ◽  
Kazuhiro Tomita ◽  
Pongsathorn Raksincharoensak ◽  
Yohei Michitsuji ◽  
Masao Nagai
Keyword(s):  
Fuel Economy ◽  
Light Duty ◽  
Fuel Economy Improvement

Feasibility Study of Medium- and Heavy-Duty Compressed Renewable/Natural Gas Vehicles in Canada

2020 ◽  
Author(s):  
Wahiba Yaïci ◽  
Hajo Ribberink
Keyword(s):  
Natural Gas ◽  
Feasibility Study ◽  
Fuel Economy ◽  
Economies Of Scale ◽  
Motor Fuel ◽  
Analysis Tool ◽  
Heavy Duty ◽  
Compressed Natural Gas ◽  
Natural Gas Vehicles ◽  
Renewable Natural Gas

Abstract Concerns about environmental degradation and finite natural resources necessitate cleaner sources of energy for use in the transportation sector. In Canada, natural gas is currently being appraised as a potential alternative fuel for use in vehicles for both medium and heavy-duty use due to its relatively lower costs compared to that of conventional fuels. The idea of compressed natural gas vehicles (CNGVs) is being mooted as inexpensive for fleet owners and especially because it will potentially significantly reduce harmful emissions into the environment. A short feasibility study was conducted to ascertain the potential for reduced emissions and savings opportunities presented by CNGVs in both medium and heavy-duty vehicles. The study which is discussed in the present paper was carried out on long-haul trucking and refuse trucks respectively. Emphasis was laid on individual vehicle operating economics and emissions reduction, and the identification of practical considerations for both the individual application and CNGVs as a whole. A financial analysis of the annual cost savings that is achievable when an individual diesel vehicle is replaced with a CNG vehicle was also presented. This paper drew substantial references from published case studies for relevant data on maintenance costs, fuel economy, range, and annual distance travelled. It relied on a summary report from Argonne National Laboratory’s GREET (Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation) [1] for its discussion on relative fuel efficiency penalties for heavy-duty CNGVs. The fuel cost figures were mostly drawn from motor fuel data of the Ontario Ministry of Transportation, since the Ministry is one of the few available sources of compressed natural gas fuel prices. Finally, the GHGenius life-cycle analysis tool [2] was employed to determine fuel-cycle emissions in Canada for comparison purposes. The study produced remarkable findings. Results showed that compared to diesel-fuelled vehicles, emissions in CNG heavy-and-medium-duty vehicles reduced by up to 8.7% (for well-to-pump) and 11.5% (for pump-to-wheels) respectively. Overall, the most beneficial use/application appeared to be long-haul trucking based on the long distances covered and higher fuel economy achieved (derived from economies of scale), while refuse trucks appeared to have relatively marginal annual savings. However, these annual savings are actually a conservative estimate which will ultimately be modified/determined by a number of factors that are likely to be predisposed in favour of natural gas vehicles. Significantly, the prospect of using renewable natural gas as fuel was found to be a factor for improving the value proposition of refuse trucks in particular, certainly from an emissions standpoint with a reduction of up to 100%, but speculatively from operational savings as well.

Fuel Economy Improvement Through Frictional Loss Reduction in Light Duty Truck Rear Axle

2002 ◽  
Author(s):  
Arup Gangopadhyay ◽  
Sam Asaro ◽  
Michael Schroder ◽  
Ron Jensen ◽  
Jagadish Sorab
Keyword(s):  
Fuel Economy ◽  
Rear Axle ◽  
Loss Reduction ◽  
Frictional Loss ◽  
Light Duty ◽  
Fuel Economy Improvement ◽  
Light Duty Truck

scholarly journals CFD Study and Experimental Validation of a Dual Fuel Engine: Effect of Engine Speed

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4307
Author(s):  
Roberta De Robbio ◽  
Maria Cristina Cameretti ◽  
Ezio Mancaruso ◽  
Raffaele Tuccillo ◽  
Bianca Maria Vaglieco
Keyword(s):  
Natural Gas ◽  
High Performance ◽  
Engine Speed ◽  
Pollutant Emissions ◽  
Dual Fuel ◽  
Automotive Market ◽  
Light Duty ◽  
Viable Solution ◽  
Dual Fuel Engines ◽  
Gas Ratio

Dual fuel engines induce benefits in terms of pollutant emissions of PM and NOx together with carbon dioxide reduction and being powered by natural gas (mainly methane) characterized by a low C/H ratio. Therefore, using natural gas (NG) in diesel engines can be a viable solution to reevaluate this type of engine and to prevent its disappearance from the automotive market, as it is a well-established technology in both energy and transportation fields. It is characterized by high performance and reliability. Nevertheless, further improvements are needed in terms of the optimization of combustion development, a more efficient oxidation, and a more efficient exploitation of gaseous fuel energy. To this aim, in this work, a CFD numerical methodology is described to simulate the processes that characterize combustion in a light-duty diesel engine in dual fuel mode by analyzing the effects of the changes in engine speed on the interaction between fluid-dynamics and chemistry as well as when the diesel/natural gas ratio changes at constant injected diesel amount. With the aid of experimental data obtained at the engine test bench on an optically accessible research engine, models of a 3D code, i.e., KIVA-3V, were validated. The ability to view images of OH distribution inside the cylinder allowed us to better model the complex combustion phenomenon of two fuels with very different burning characteristics. The numerical results also defined the importance of this free radical that characterizes the areas with the greatest combustion activity.

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