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HCNG
HCNG (or H2CNG) is a mixture of compressed natural gas and 4–9 percent hydrogen by energy.〔(International hydrogen fuel and pressure vessel forum 2010 )〕 It may be used as a fuel gas for internal combustion engines〔(Test of blends of hydrogen and natural gas in a light-duty vehicle )〕〔(Development of HCNG blended fuel engine with control of NOx emissions )〕〔(Hydrogen enriched compressed natural gas )〕 and home appliances. HCNG dispensers can be found at Hynor (Norway) Thousand palms and Barstow〔(Hydrogen-enhanced natural gas vehicle program )〕 California Fort Collins Colorado, Chongqing〔(Chongqing Wuzhoulong Works with Tsinghua University for HCNG Buses )〕 and Shanxi (China),〔(Hydrogen-enriched compressed natural gas as a fuel for engines )〕〔(HCNG in China )〕〔(Sxgxny (Shanxi) )〕 Pico Truncado (Argentina),〔(Argentina’s first HCNG patrol car )〕 Islamabad (Pakistan),〔(Prime Minister Syed Yousaf Raza Gillani supports non-stop CNG loading in Pakistan )〕〔(PM dedicate three gas fields for CNG Industry, HCNG to import immediately with zero import duty )〕 Dunkerque (France),〔(ALT-HY-TUDE Project )〕〔(Position Paper: Natural gas – hydrogen blends technology )〕 Gothenburg Sweden, Rio de Janeiro〔(Petrobras and the infrastructure for hydrogen supply in Brazil )〕 (Brazil), Emilia-Romagna,〔(Hydrogen-methanemixtures: vehicle tests performed by ENEA )〕〔(mhybus )〕 Lombardia〔(Regione Lombardia: 10 hydromethane Pandas )〕〔(Italian highway presents first prototype of hydrogen-methane Iveco Ecodaily )〕 (Italy), Dwarka and Faridabad (Delhi), India〔(Successful adoption of CNG and emerging CNG-H2 program in India )〕〔(Automotive research body develops greener fuel engine for light vehicles )〕〔(Hydrogen–CNG Fuel To Debut During Games )〕 and the BC hydrogen highway in Canada.
HCNG for mobile use is premixed at the hydrogen station.
==Research==
In the town of Nes on the island of Ameland in the Netherlands, a four-year (2008-2011) field test was carried out where 20% hydrogen was added to the local distribution net supplying a complex of 14 apartments.〔(Pilot project on hydrogen injection in natural gas on island of Ameland )〕 The appliances involved were kitchen stoves, condensing boilers, and micro-CHP boilers.〔(Ameland Field testing )〕
The use of existing natural gas pipelines for HCNG was studied by NaturalHy.〔(Using the existing natural gas system for hydrogen )〕
To get the most out of an internal combustion engine in transportation if higher levels of hydrogen are added, modifications have to be made to the engine and the control strategy.〔(A study on quasi-dimensional combustion model of a spark ignition HCNG engine suitable for various hydrogen fractions (SAE 2008) )〕〔(Natural gas vehicle research roadmap -Pag.22 )〕〔(High-percentage hydrogen/cng blend Ford F-150 operating summary )〕 The hydrogen in the blend leads to lower CO2 emissions.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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