CNG.2FLNG as fuel for automobiles Natural gas vehicle

1 cng/lng fuel automobiles

1.1 available production cars
1.2 differences between lng , cng fuels
1.3 cng auto fuel
1.4 lng auto fuel
1.5 advantages on gasoline , diesel
1.6 inherent advantages/disadvantages between autogas (lpg) power , ngv

1.6.1 current advantages of lpg power on ngv


1.7 future possibilities

cng/lng fuel automobiles
available production cars

brazilian flexible-fuel taxi retrofitted run ngv. compressed natural gas (cng) tanks located underneath body in rear.

existing gasoline-powered vehicles may converted run on cng or lng, , can dedicated (running on natural gas) or bi-fuel (running on either gasoline or natural gas). however, increasing number of vehicles worldwide being manufactured run on cng. until recently, now-discontinued honda civic gx ngv commercially available in market. more recently, ford, general motors , ram trucks have bi-fuel offerings in vehicle lineup. ford s approach offer bi-fuel prep kit factory option, , have customer choose authorized partner install natural gas equipment. choosing gm s bi-fuel option sends hd pickups 6.0l gasoline engine impco in indiana upfit vehicle run on cng. ram pickup truck manufacturer cng factory-installed bi-fuel system available in u.s. market.

outside u.s. gm brasil introduced multipower engine in 2004, capable of using cng, alcohol , gasoline (e20-e25 blend) fuel, , used in chevrolet astra 2.0 model 2005, aimed @ taxi market. in 2006, brazilian subsidiary of fiat introduced fiat siena tetra fuel, four-fuel car developed under magneti marelli of fiat brazil. automobile can run on natural gas (cng); 100% ethanol (e100); e20 e25 gasoline blend, brazil s mandatory gasoline; , pure gasoline, though no longer available in brazil used in neighboring countries.

in 2015, honda announced decision phase out commercialization of natural-gas powered vehicles focus on development of new generation of electrified vehicles such hybrids, plug-in electric cars , hydrogen-powered fuel cell vehicles. since 2008, honda sold 16,000 natural-gas vehicles, taxi , commercial fleets.

differences between lng , cng fuels

though lng , cng both considered ngvs, technologies vastly different. refueling equipment, fuel cost, pumps, tanks, hazards, capital costs different.

one thing share due engines made gasoline, computer controlled valves control fuel mixtures required both of them, being proprietary , specific manufacturer. on-engine technology fuel metering same lng , cng.

cng auto fuel

cng, or compressed natural gas, stored @ high pressure, 3,000 3,600 pounds per square inch (21 25 mpa). required tank more massive , costly conventional fuel tank. commercial on-demand refueling stations more expensive operate lng stations because of energy required compression, compressor requires 100 times more electrical power, however, slow-fill (many hours) can cost-effective lng stations [missing citation - initial liquefaction of natural gas cooling requires more energy gas compression]. time fill cng tank varies depending on station. home refuelers typically fill @ 0.4 gge/hr. fast-fill stations may able refill 10 gge tank in 5–10 minutes. also, because of lower energy density, range on cng limited comparison lng. gas composition , throughput allowing, should feasible connect commercial cng fueling stations city gas networks, or enable home fueling of cng vehicles directly using gas compressor. similar car battery, cng tank of car double home energy storage device , compressor powered @ times when there excess/ free renewable electrical energy.

lng auto fuel

lng, or liquified natural gas, natural gas has been cooled point cryogenic liquid. in liquid state, still more 2 times dense cng. lng dispensed bulk storage tanks @ lng fuel stations @ rates exceeding 20 dge/min. because of cryogenic nature, stored in specially designed insulated tanks. speaking, these tanks operate @ low pressures (about 70-150 psi) when compared cng. vaporizer mounted in fuel system turns lng gas (which may considered low pressure cng). when comparing building commercial lng station cng station, utility infrastructure, capital cost, , electricity heavily favor lng on cng. there existing lcng stations (both cng , lng), fuel stored lng, vaporized cng on-demand. lcng stations require less capital cost fast-fill cng stations alone, more lng stations.

advantages on gasoline , diesel

lng – , cng – tends corrode , wear parts of engine less rapidly gasoline. quite common find diesel-engine ngvs high mileages (over 500,000 miles). cng emits 20-29% less co2 diesel , gasoline. emissions cleaner, lower emissions of carbon , lower particulate emissions per equivalent distance traveled. there less wasted fuel. however, cost (monetary, environmental, pre-existing infrastructure) of distribution, compression, cooling must taken account.

inherent advantages/disadvantages between autogas (lpg) power , ngv

autogas, known lpg, has different chemical composition, still petroleum based gas, has number of inherent advantages , disadvantages, noninherent ones. inherent advantage of autogas on cng requires far less compression (20% of cng cost), denser liquid @ room temperature, , requires far cheaper tanks (consumer) , fuel compressors (provider) cng. compared lng, requires no chilling (and less energy), or problems associated extreme cold such frostbite. ngv, has advantages on gasoline , diesel in cleaner emissions, along less wear on engines on gasoline. major drawback of lpg safety. fuel heavier air, causes collect in low spot in event of leak, making far more hazardous use , more care needed in handling. besides this, lpg (40% crude oil refining) more expensive natural gas.

current advantages of lpg power on ngv

in places us, thailand, , india, there 5 ten times more stations making fuel more accessible ngv stations. other countries poland, south korea, , turkey, lpg stations , autos widespread while ngvs not. in addition, in countries such thailand, retail lpg fuel considerably cheaper in cost.

future possibilities

though ang (adsorbed natural gas) has not yet been used in either providing stations nor consumer storage tanks, low compression (500psi vs 3600 psi) has potential drive down costs of ngv infrastructure , vehicle tanks.