CO2 savings due to electronically controlled fuel pumps in fuel delivery modules

2012 ◽  
pp. 11-19
Author(s):  
D. Collins ◽  
A. Frilling ◽  
I. Hislaire ◽  
A.V. Iseghem ◽  
H. Cremer ◽  
...  
Keyword(s):  
Fuel Delivery

Urban Impacts of Mobile Fuel Delivery Service

2020 ◽  
pp. 036119812097541
Author(s):  
Andrea Broaddus
Keyword(s):  
San Francisco ◽  
Traffic Congestion ◽  
Data Set ◽  
Gas Stations ◽  
Bay Area ◽  
Urban Impacts ◽  
Fuel Delivery ◽  
Declining Demand ◽  
Multiple Vehicles ◽  
Gas Station

Mobile fuel delivery (MFD) uses a fueling truck to fill up personal and commercial fleet vehicles while they are parked overnight. This study used a sample data set provided by a San Francisco Bay Area company to explore the potential impacts on vehicle miles traveled (VMT), carbon dioxide (CO2) emissions, and traffic congestion. An analysis of vehicle travel associated with gas station trips was conducted to establish a basis for comparison. Future scenarios comparing the potential impacts of scaled-up MFD services in 2030 were also developed. The study concluded that MFD services compared favorably to gas stations in relation to environmental and traffic benefits in the longer term, even though personal fueling trips tended to generate low VMT. Benefits stemmed from efficiencies achieved by fueling multiple vehicles per delivery trip, replacing car share vehicle fueling trips, and removing trips from the network during peak hours. This analysis estimated that total annual CO2 emissions associated with fuel delivery operations in the Bay Area were 76 metric tons, which is less than a typical gas station with 97 metric tons. Under assumptions of declining demand for gasoline and significantly fewer gas stations, and with highly efficient optimized operations, mobile delivery could gain up to 5% market share for gas and not add additional VMT over the business as usual scenario.

scholarly journals Assuring pulsation-free flow in a directly pressurized fuel delivery at a retail hydrogen station

2018 ◽  
Vol 43 (34) ◽  
pp. 16623-16637 ◽  
Author(s):  
Matteo Genovese ◽  
David Blekhman ◽  
Crystal Xie ◽  
Michael Dray ◽  
Petronilla Fragiacomo
Keyword(s):  
Free Flow ◽  
Fuel Delivery ◽  
Hydrogen Station

Energy Efficiency Improvement of Diesel Aftertreatment With Flow Reversal and Central Fuelling

2007 ◽  
Author(s):  
Ming Zheng ◽  
Siddhartha Banerjee ◽  
Xiaohong Xu ◽  
Usman Asad ◽  
Xiaoye Han ◽  
...  
Keyword(s):  
Gas Flow ◽  
Flow Reversal ◽  
Regeneration Rate ◽  
Exhaust Temperature ◽  
Energy Efficiency Improvement ◽  
Unidirectional Flow ◽  
Central Heating ◽  
Fuel Delivery ◽  
Delivery Technique ◽  
Substrate Properties

Empirical and theoretical studies are made between the inlet and central heating schemes in a flow reversal embedment of diesel aftertreatment converters in order to investigate the influences of gas flow, heat transfer, chemical reaction, oxygen concentration, and substrate properties. The periodic flow reversal converter is found effective to treat engine exhausts that are difficult to cope with conventional unidirectional flow converters. However, the previous work indicates that the exhaust temperature from modern diesel engines is commonly insufficient to sustain a high conversion or regeneration rate and thus supplemental heating techniques are commonly applied. A technique of fuelling at the central region of a flow-reversal embedment is found more energy-efficient to raise the temperature of the catalytic flow-bed and therefore to drastically reduce the supplemental heating to the substrate. An effective fuel delivery technique has been tested to improve the fuel dispersion of the central fuel delivery strategy at various engine-out exhaust temperatures, compositions, and flow rates.

scholarly journals Simplification of the procedure for testing common rail fuel injectors

2020 ◽  
Vol 180 (1) ◽  
pp. 52-56 ◽  
Author(s):  
Tomasz STOECK
Keyword(s):  
Test Bench ◽  
Wide Spectrum ◽  
Characteristic Curve ◽  
Technical Condition ◽  
Common Rail ◽  
Microsoft Excel ◽  
Fuel Injectors ◽  
Active Experiment ◽  
Fuel Delivery ◽  
Problematic Situations

The paper presents a simplified methodology for generating the characteristic curve of fuel doses for common rail injectors, which consists in limiting the number of measurements on the test bench and calculating missing data using predefined (array) functions of the Microsoft Excel spreadsheet. This allows checking the method of fuel delivery in a wide spectrum of predefined pressures and atomiser opening times, while reducing the arduousness and time-consumption of the active experiment phase. The proposed solution is particularly useful in problematic situations when standard manufacturer's tests, referred only to selected work points, make it impossible to clearly assess the technical condition of the injector.

scholarly journals An investigation of the fuel injector dedicated to the aircraft opposed-piston two-stroke diesel engine

2019 ◽  
Vol 177 (2) ◽  
pp. 151-155
Author(s):  
Ksenia SIADKOWSKA ◽  
Mirosław WENDEKER ◽  
Łukasz GRABOWSKI
Keyword(s):  
Diesel Engine ◽  
Combustion Process ◽  
Mie Scattering ◽  
Operating Conditions ◽  
Fuel Spray ◽  
Chamber Pressure ◽  
Fuel Injector ◽  
Measuring Point ◽  
Fuel Delivery ◽  
The Moment

The paper presents the research results of the injector construction with the modified injection nozzle. The injector is designed for a prototype opposed-piston aircraft diesel engine. The measurements were based on the Mie scattering technique. The conditions of the experiment corresponded to maximum loads similar to those occurring at the start. The measuring point was selected in line with the analysis of engine operating conditions: combustion chamber pressure at the moment of fuel delivery (6 MPa) and fuel pressure in the injection rail (140 MPa). The analysis focused on the average spray range and distribution, taking into account the differences between holes in the nozzle. As a result of the conducted research, the fuel spray range was defined with the determined parameters of injection. The fuel spray ranges inside the constant volume chamber at specific injection pressures and in the chamber were examined, and the obtained results were used to verify and optimize the combustion process in the designed opposed-piston two-stroke engine.

Evaluation of Spark Plug and Timing Configurations on the Fuel Consumption, Combustion Stability, and Emissions of a Large-Bore, Two-Stroke, Natural Gas Engine

2016 ◽  
Author(s):  
Derek Johnson ◽  
Marc Besch ◽  
Nathaniel Fowler ◽  
Robert Heltzel ◽  
April Covington
Keyword(s):  
Natural Gas ◽  
Fuel Consumption ◽  
Combustion Engine ◽  
Engine Performance ◽  
Combustion Stability ◽  
Oxides Of Nitrogen ◽  
Natural Gas Engines ◽  
Fuel Delivery ◽  
Spark Plug ◽  
Trade Offs

Emissions compliance is a driving factor for internal combustion engine research pertaining to both new and old technologies. New standards and compliance requirements for off-road spark ignited engines are currently under review and include greenhouse gases. To continue operation of legacy natural gas engines, research is required to increase or maintain engine efficiency, while reducing emissions of carbon monoxide, oxides of nitrogen, and volatile organic compounds such as formaldehyde. A variety of technologies can be found on legacy, large-bore natural gas engines that allow them to meet current emissions standards — these include exhaust after-treatment, advanced ignition technologies, and fuel delivery methods. The natural gas industry uses a variety of spark plugs and tuning methods to improve engine performance or decrease emissions of existing engines. The focus of this study was to examine the effects of various spark plug configurations along with spark timing to examine any potential benefits. Spark plugs with varied electrode diameter, number of ground electrodes, and heat ranges were evaluated against efficiency and exhaust emissions. Combustion analyses were also conducted to examine peak firing pressure, location of peak firing pressure, and indicated mean effective pressure. The test platform was an AJAX-E42 engine. The engine has a bore and stroke of 0.216 × 0.254 meters (m), respectively. The engine displacement was 9.29 liters (L) with a compression ratio of 6:1. The engine was modified to include electronic spark plug timing capabilities along with a mass flow controller to ensure accurate fuel delivery. Each spark plug configuration was examined at ignition timings of 17, 14, 11, 8, and 5 crank angle degrees before top dead center. The various configurations were examined to identify optimal conditions for each plug comparing trade-offs among brake specific fuel consumption, oxides of nitrogen, methane, formaldehyde, and combustion stability.

Observer Based Fuel Delivery Control for PEM Fuel Cells with a Segmented Anode Model

2018 ◽  
Vol 21 (4) ◽  
pp. 1781-1795 ◽  
Author(s):  
Jian Chen ◽  
Zhongle Wu ◽  
Chengshuai Wu ◽  
Chizhou Yan
Keyword(s):  
Fuel Cells ◽  
Pem Fuel Cells ◽  
Fuel Delivery

Combustion and Emission Characteristics of Dual Fuel Engine for Different Parameters

2021 ◽  
Vol 13 (4) ◽  
Author(s):  
Jianjun Zhu ◽  
Peng Li ◽  
Yufeng Xie ◽  
Xin Geng
Keyword(s):  
Diesel Engine ◽  
Heat Release ◽  
Heat Release Rate ◽  
Compression Ratio ◽  
Release Rate ◽  
Emission Characteristics ◽  
Soot Emission ◽  
Cylinder Pressure ◽  
Fuel Delivery ◽  
Soot Emissions

The effects of compression ratio and fuel delivery advance angle on the combustion and emission characteristics of premixed methanol charge induced ignition by Fischer Tropsch diesel engine were investigated using a CY25TQ diesel engine. In the process of reducing the compression ratio from 16.9 to 15.4, the starting point of combustion is fluctuating, the peak of in-cylinder pressure and the maximum pressure increase rate decrease by 44.5% and 37.7% respectively. The peak instantaneous heat release rate increases by 54.4%. HC and CO emissions are on a rising trend. NOx and soot emissions were greatly decreased. The soot emission has the biggest drop of 50%. Reducing the fuel delivery advance angle will make the peak of in-cylinder pressure and the peak of pressure rise rate increase while the peak of heat release rate decreases. The soot emission is negatively correlated with the fuel delivery advance angle. When the fuel delivery advance angle is 16° CA, the soot emissions increased the most by 130%.

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