Practical Applications of Opposed-Piston Engine Technology to Reduce Fuel Consumption and Emissions

2013 ◽  
Author(s):  
Suramya Naik ◽  
David Johnson ◽  
John Koszewnik ◽  
Laurence Fromm ◽  
Fabien Redon ◽  
...  
Keyword(s):  
Fuel Consumption ◽  
Reduce Fuel Consumption ◽  
Piston Engine ◽  
Practical Applications ◽  
Fuel Consumption And Emissions

scholarly journals The impact of single engine taxiing on aircraft fuel consumption and pollutant emissions

2018 ◽  
Vol 122 (1258) ◽  
pp. 1967-1984 ◽  
Author(s):  
M. E. J. Stettler ◽  
G. S. Koudis ◽  
S. J. Hu ◽  
A. Majumdar ◽  
W. Y. Ochieng
Keyword(s):  
Fuel Consumption ◽  
Pollutant Emissions ◽  
Future Research ◽  
Reduce Fuel Consumption ◽  
Flight Data ◽  
Set Operations ◽  
Aircraft Fuel ◽  
Fuel Consumption And Emissions ◽  
The Impact

ABSTRACTOptimisation of aircraft ground operations to reduce airport emissions can reduce resultant local air quality impacts. Single engine taxiing (SET), where only half of the installed number of engines are used for the majority of the taxi duration, offers the opportunity to reduce fuel consumption, and emissions of NOX, CO and HC. Using 3510 flight data records, this paper develops a model for SET operations and presents a case study of London Heathrow, where we show that SET is regularly implemented during taxi-in. The model predicts fuel consumption and pollutant emissions with greater accuracy than previous studies that used simplistic assumptions. Without SET during taxi-in, fuel consumption and pollutant emissions would increase by up to 50%. Reducing the time before SET is initiated to the 25th percentile of recorded values would reduce fuel consumption and pollutant emissions by 7–14%, respectively, relative to current operations. Future research should investigate the practicalities of reducing the time before SET initialisation so that additional benefits of reduced fuel loadings, which would decrease fuel consumption across the whole flight, can be achieved.

Charge Motion Benefits of Valve Deactivation to Reduce Fuel Consumption and Emissions in a GDi, VVA Engine

2011 ◽  
Author(s):  
Wayne Moore ◽  
Matthew Foster ◽  
Ming-Chia Lai ◽  
Xing-Bin Xie ◽  
Yi Zheng ◽  
...  
Keyword(s):  
Fuel Consumption ◽  
Reduce Fuel Consumption ◽  
Charge Motion ◽  
Fuel Consumption And Emissions

Application of Energy-Saving Magnesium Alloy in Automotive Industry

2013 ◽  
Vol 734-737 ◽  
pp. 2244-2247 ◽  
Author(s):  
Chun Ping Du ◽  
Dao Fen Xu
Keyword(s):  
Magnesium Alloy ◽  
Energy Saving ◽  
Fuel Consumption ◽  
Magnesium Alloys ◽  
Automotive Industry ◽  
Reduce Fuel Consumption ◽  
Research Focus ◽  
Lightweight Materials ◽  
Fuel Consumption And Emissions

Reducing the weight of a vehicle, which helps to reduce fuel consumption and emissions by a large extent, has become a research focus in the automotive industry. Application of magnesium alloy lightweight materials is one of the most lightweight methods. This paper introduces the characteristics of magnesium alloys and reviews the application of magnesium alloys in automotive industry at present.

scholarly journals Development of a 4 stroke spark ignition opposed piston engine

2018 ◽  
Vol 8 (1) ◽  
pp. 337-343
Author(s):  
Jorge P. Gregório ◽  
Francisco M. Brójo
Keyword(s):  
Fuel Consumption ◽  
Internal Combustion Engines ◽  
Eddy Currents ◽  
Low Cost ◽  
Combustion Engines ◽  
Piston Engine ◽  
Development Costs ◽  
Higher Power ◽  
Engine Blocks ◽  
Fuel Consumption And Emissions

Abstract The purpose of this project was to develop a low-cost OP engine, 4-stroke, gasoline by joining two single-cylinder reciprocating internal combustion engines with side valves on the block, removing the heads. The chosed engine was Model EY15 of Robin America. Joining these two engine blocks together made possible to build an opposed-piston engine (OPE) with two crankshafts. In this new engine, the combustion chamber is confined to the space inside the cylinder between the piston heads and the chamber between the valves. The pistons move in the cylinder axis in opposite directions, a feature typical of opposed-piston engines. After building the engine, parameters characteristic of the OPE, such as: rotational speed, torque, fuel consumption and emissions, were measured on an Eddy currents dynamometer. With the collected data, power, specific consumption and overall efficiency were calculated, allowing to conclude that the motor with the opposed-piston configuration is less expensive and is more powerful. The development of the opposed-piston engine in this project has shown that it is feasible to build one engine from a different one already in use, reducing the manufacturing and development costs. In addition, higher power can be obtained with better specific fuel consumption and less vibration.

Workload Perception of Air Traffic Control Officers and Pilots During Continuous Descent Operations Approach Procedures

2019 ◽  
Vol 9 (1) ◽  
pp. 2-11
Author(s):  
Marina Efthymiou ◽  
Frank Fichert ◽  
Olaf Lantzsch
Keyword(s):  
Fuel Consumption ◽  
Traffic Control ◽  
Air Traffic Control ◽  
Negative Impact ◽  
Air Traffic ◽  
Reduce Fuel Consumption ◽  
Total Load ◽  
Open Path

Abstract. The paper examines the workload perceived by air traffic control officers (ATCOs) and pilots during continuous descent operations (CDOs), applying closed- and open-path procedures. CDOs reduce fuel consumption and noise emissions. Therefore, they are supported by airports as well as airlines. However, their use often depends on pilots asking for CDOs and controllers giving approval and directions. An adapted NASA Total Load Index (TLX) was used to measure the workload perception of ATCOs and pilots when applying CDOs at selected European airports. The main finding is that ATCOs’ workload increased when giving both closed- and open-path CDOs, which may have a negative impact on their willingness to apply CDOs. The main problem reported by pilots was insufficient distance-to-go information provided by ATCOs. The workload change is important when considering the use of CDOs.

Gasoline Engine and Fuels Offering Reduced fuel Consumption and Emissions (GEFORCE)

2018 ◽  
Author(s):  
C. Scott Sluder ◽  
Martin L. Wissink ◽  
David E. Smith
Keyword(s):  
Fuel Consumption ◽  
Gasoline Engine ◽  
Fuel Consumption And Emissions
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