Low Emissions Class 8 Heavy-Duty On-Highway Natural Gas and Gasoline Engine

Chiu, James; Wegrzyn, James; Murphy, Kenneth E.

doi:10.4271/2004-01-2982

Cited by 23 publications

(10 citation statements)

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“…With the development of natural gas combustion technology, utilization of natural gas engines has also been extended to heavy-duty trucks and marine main impellers, where good power performance is in great demand [1][2][3][4][5]. Traditional spark-ignited natural gas engines, limited by knocking and slow combustion rate, suffer from impaired thermal efficiency [6][7][8]. Engines operating with directly injected natural gas and pilot diesel use the technique of injecting pilot diesel prior to natural gas injection; natural gas, ignited by pilot diesel flame, burns in a predominantly nonpremixed manner; in this case, uncontrollable auto-ignition can be avoided and compression ratio comparable to diesel engine http://dx.doi.org/10.1016/j.apenergy.2015.08.021 0306-2619/Ó 2015 Elsevier Ltd. All rights reserved.…”

Section: Introductionmentioning

confidence: 99%

Combustion process and emissions of a heavy-duty engine fueled with directly injected natural gas and pilot diesel

Qiang

Shao

2015

Applied Energy

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Section: Introductionmentioning

confidence: 99%

Combustion process and emissions of a heavy-duty engine fueled with directly injected natural gas and pilot diesel

Qiang

Shao

2015

Applied Energy

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“…Significant research has been done on these engines, however the most promising of these, the direct injection engine requires further development in order to realize its full potential. There are any researchers were did this object with modification or redesign of the gasoline engines [7][8][9][10][11][12][13]35,53,54] , diesel engines [20][21][22][23][24][25][26][27][28][40][41][42] with Compressed Natural Gas (CNG) as an alternative fuel usage on experiment and computational modeling base to found the new engine with use in diversification fuel, high performance, low emission and low cost. For example, Shashikanta [6] , studied a 17 kW, stationary, direct injection diesel engine has been converted to operate it as a gas engine using producer-gas and Compressed Natural Gas (CNG) as the fuels on two different operational modes called SIPGE (Spark Ignition Producer Gas Engine) and DCNGE (Dedicated Compressed Natural Gas Engine).…”

Section: Green Cng Engines Research and Developmentmentioning

confidence: 99%

Green Engines Development Using Compressed Natural Gas as an Alternative Fuel: A Review

Semin¹,

Bakar²,

Ismail³

2009

American J. of Environmental Sciences

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Problem statement:The Compressed Natural Gas (CNG) is a gaseous form of natural gas, it have been recognized as one of the promising alternative fuel due to its substantial benefits compared to gasoline and diesel. Natural gas is produced from gas wells or tied in with crude oil production. Approach: Natural gas is promising alternative fuel to meet strict engine emission regulations in many countries. Compressed Natural Gas (CNG) has long been used in stationary engines, but the application of CNG as a transport engines fuel has been considerably advanced over the last decade by the development of lightweight high-pressure storage cylinders. Results: The technology of engine conversion was well established and suitable conversion equipment is readily available. For petrol engines or spark ignition engines there are two options, a bi-fuel conversion and use a dedicated to CNG engine. The diesel engines converted or designed to run on natural gas, there were two main options discussed. There are dual-fuel engines and normal ignition can be initiated. Natural gas engines can be operated at lean burn and stoichiometric conditions with different combustion and emission characteristics. Conclusions: In this study, the low exhaust gas emissions of CNG engines research and development were highlighted. Stoichiometric natural gas engines were briefly reviewed. To keep the output power, torque and emissions of natural gas engines comparable to their gasoline or diesel counterparts. High activity for future green CNG engines research and development to meet future stringent emissions standards was recorded in the study.

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“…The vast majority of NG engines in use today is premixed charge spark ignition engines (Chiu, 2004). Spark ignited (SI) engines have significant advantages over diesel engines in terms of particulate and NOx emissions, there are some drawbacks with respect to performance.…”

Section: Natural Gas Engine Development Trendmentioning

confidence: 99%