4 edition of Hythane and natural gas fuelled engine exhaust emission and engine efficiency comparison found in the catalog.
Hythane and natural gas fuelled engine exhaust emission and engine efficiency comparison
Alexandra Irmgard Cattelan
Thesis (M.A.Sc.) -- University of Toronto, 1994.
|Series||Canadian theses = -- Thèses canadiennes|
|The Physical Object|
|Pagination||5 microfiches : negative. --|
8 Exhaust Gas Emission Control Today and Tomorrow Sulphur content in fuel and particu-lates in exhaust gas The sulphur content in fuel oil has a strong impact on the particle level in the exhaust gas. IMO and the EU have introduced a restriction of sulphur of % in SECA areas like the North Sea and the Baltic Sea in northern Europe. One way to extend the dilution limit of a NG engine is to run the engine on Hythane (natural gas + some percentage hydrogen). Previously effects of Hythane with 10% hydrogen by volume in a stoichiometric heavy duty NG engine were studied and no significant changes in terms of efficiency and emissions were observed.
These include, but are not limited to the type of fuel used, the natural gas engine and its efficiency penalty relative to the diesel engine it replaces, and well-to-wheels emissions of CH 4 (i.e., the magnitude of loss through the supply chain and in-use). The results of our sensitivity analyses shed light on the climate implications of these. Background: Eden developed Optiblend™, an efficient dual fuel system that is capable of operating on diesel engines and displacing up to 70% of the diesel fuel with natural gas. If Hythane™ fuel (hydrogen enriched natural gas) is used in place of natural gas, the displacement of diesel fuel .
Natural gas and other liquid feedstocks for transportation fuels are compared for use in a dual-fuel engine. Benefits include economic stability, national security, environment, and cost. Keywords: methanol, natural gas, dual-fuel engine technology, EPA's alcohol engine research Created Date: 11/8/ PM. Diesels save the company $k at the outset. The cost to manufacture them will go down with higher volume. But, natural gas vehicles don’t get as good of mileage as diesels. Diesel has more energy density than natural gas, by a lot- btu vs 37btu. You’ll have to fill up more with CNG. Efficiency of diesel is about 40% better from any.
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Journal Article: Comparison of emissions and efficiency of a turbocharged lean-burn natural gas and Hythane-fueled engine. Comparison of emissions and efficiency of a turbocharged lean-burn natural gas and Hythane-fueled engine.
Full Record; Other Related Research. In a first set of measurements, a comparison is made between natural gas and two bl ends of hythane (hythane wi th 10 and 20 volume per cent hydrogen, respectively). Each time, spark timing was optimised for maximum power (MET).
Figure 2 shows how the air excess factor or air-fuel ratio A (A = 1/. The emissions and efficiency of the Hythane fuel (15 percent hydrogen, 85 percent natural gas by volume), were compared to the emissions and efficiency of pure natural gas using a turbocharged, spark ignition, L, V-6 by: The fuel supply system used provides natural gas/hydrogen mixtures in variable proportion, regulated independently of the engine operating condition.
The influence of the fuel composition on the engine operating characteristics and exhaust emissions has been examined, mainly but not exclusively for 10 and 20 percent hydrogen by: Natural gas can be used as engine fuel in two ways.
One is to use it on a dual fuel engine. In this case, natural gas is the main fuel and is ignited by pilot diesel fuel. Therefore, soot and NOx emissions from conventional diesel engines can be minimized through the replacement of diesel by natural gas.
Bysveen evaluated the efficiency and emissions from an engine fuelled with compressed natural gas (CNG) and a mixture of natural gas and hydrogen. Pure CNG and 29 vol% H 2 in CNG (named HCNG) were investigated at four engine speeds under full load.
A diesel engine dual-fueled with diesel fuel and natural gas was researched to improve exhaust emissions at part load. In the engine tests, the intake charge condition including intake temperature and EGR were examined, using a heat exchanger installed in the intake system. Moreover, to analyze the formation of NO x and THC, the KIVA-3 code was.
Utilizing TCR on gas carriers with engines fueled by syngas produced from boil-off gas (BOG) reduces the carbon content by 35% and provides the energy efficiency required by IMO without the use of.
diesel engine operation like the fuel consumption, the exhaust gas emission, the life of engine components, and the overall optimum performance of the engine. Although the experts very well understand the basic concept of the combustion process, a comprehensive and accurate mathematical model is very difficult to propose.
Zhang, in Advanced Direct Injection Combustion Engine Technologies and Development: Gasoline and Gas Engines, Cost of fuel systems. Fuel systems for DI natural gas engines tend to be more expensive than those for diesel engines. First, fuel tanks, either for CNG or for LNG, are more expensive than those for diesel.
A CNG tank has to withstand over bars of internal pressure. Cattelan AI, Wallace JS () Hythane and CNG fuelled engine exhaust emissions and engine efficiency comparison.
In: Proceedings of 10th world hydrogen energy conference, Comparison of emissions and efficiency of a turbocharged lean-burn natural gas and hythane-fueled engine. Due to abundance of natural gas, the use of natural gas for automotive use, particularly for internal combustion engine (ICE), is more practical and cheaper than their future successors.
Even though natural gas is a cleaner fuel than other fossil fuels and has a higher octane number and can lead to higher thermal efficiency, its low carbon number makes it less attractive as compared to.
The EGR system has been widely used to reduce nitrogen oxides (NOx) emission, to improve fuel economy and suppress knock by using the characteristics of charge dilution.
However, as the EGR rate at a given engine operating condition increases, the combustion instability increases. The combustion instability increases cyclic variations resulting in the deterioration of engine performance and. The HCNG engine torque, power and fuel consumption were maintained the same as for the natural gas fuel.
The chassis dynamometer transient testing confirmed large NOx reduction of about 56% for. An experiment was conducted to evaluate the efficiency and emissions of an engine fuelled with a mixture of natural gas and approximately 15% hydrogen by volume. This mixture, called Hythane™, was compared with natural gas fuel using engine efficiency and engine-out emissions at various engine operating conditions as the basis of by: Most natural gas powered transit buses store on-board fuel as a high -pressure compressed gas, so called “ compressed natural gas ”, or CNG.
There are also two main options for propulsion system technology: 1) a traditional automatic transmission, and 2) a hybrid -electric system. A hybridelectric system combines one or more. Several exhaust emission regulations have recently entered or are about to enter into force Marine Engines only – Maximum Fuel Sulphur Content is %-m 18 Direct Measurement Method – All fuel qualities 29 2 for engine bore at or exceeding mm • Gas diesel engine plants.
Bi-fuel systems can save operators up to 50 percent on fuel costs, based upon the cost of diesel relative to natural gas, and they make diesel engines more environmentally friendly. aftertreatment or exhaust gas recirculation to meet the International Maritime Organization Tier III regulations.
Sulphur controls, such as the act, move to limit sulphur to % globally. However, this will increase the cost of the HFO used by most OGVs, enhancing the economic case for natural gas fuel. A number of researchers have performed experiments with natural gas and syngas to determine engine performance and exhaust emissions in dual-fuel engines.
Their results indicate that lower NOx and smoke can be achieved in dual-fuel engines compared with conventional diesel engines, while maintaining the same thermal efficiency as a diesel engine. Hythane is 85 vol% compressed natural gas (CNG) and 15 vol% hydrogen; it has the potential to meet or exceed the California Ultra-Low Emission Vehicle (ULEV) standard.
Three USA trucks (3/4 ton pickup) were operated on single fuel (unleaded gasoline, CNG, Hythane) in Denver.lower energy density of the fuel, drop in engine power and engine out exhaust emissions. When hydrogen is added to CNG it is called as Hythane or Hydrogen enriched Compressed Natural Gas (HCNG).
This can be considered as a first step towards promotion of hydrogen in automobiles. In this study, the effects of mixing hydrogen with CNG on a small.Diesel and gasoline engines are the major power train sources used in vehicles. They are both internal, intermittent combustion engines.
In diesel engines, the fuel is self-ignited as it is injected into air that has been heated by compression. In gasoline engines, the fuel is ignited by sparking-plugs. The fuels used in diesel and gasoline engines also differ, with diesel fuel consisting of.