Cold Start Emission Reduction by Barrier Discharge
Vehicle results in the New European Driving Cycle show a hydrocarbon conversion of more than 42% in the first 11 seconds from ... The article concerns the design and development of a plasma-system in order to decrease the hydrocarbon emissions from engine ... In this period nearly all types of hydrocarbon were reduced. The exhaust backpressure of the system is comparable to the ... The investigations reviewed in this paper are dealing with the plasma chemical oxidation of hydrocarbons in the exhaust gas ...
Investigations into Steady-State and Stop-Start Emissions in a Wankel Rotary Engine with a Novel Rotor Cooling Arrangement
The present work investigates a means of controlling engine hydrocarbon startup and shutdown emissions in a Wankel engine which ... The reasons for the engine on/off hydrocarbon issue are apparent. Using a solenoid valve as a means of venting the rotor core ... As well as shutdown it also affects the startup process, where higher hydrocarbon emissions are caused due to the forced ... This approach would feed the hydrocarbon-rich gases from the core through the combustion process and out through the catalytic ...
J1936 198910
Informational methods are presented for the measurement of polycyclic aromatic hydrocarbons (PAH) in diesel exhaust particulate ...
Laminar Burning Speed Measurements of Indolene-Air-Diluent Mixtures at High Pressures and Temperatures
The laminar burning speeds of two practical multi-component hydrocarbon fuels similar to automotive gasoline were measured ... The laminar burning speeds of two practical multi-component hydrocarbon fuels similar to automotive gasoline were measured ...
Cycle-to-Cycle IMEP Fluctuations in a Stoichiometrically-Fueled S.I. Engine at Low Speed and Load
Real-time sampling of the hydrocarbon concentration in the exhaust port has shown that the variation in fuel burned per cycle ...
Effects of Swirl and Tumble on Mixture Preparation During Cold Start of a Gasoline Direct-Injection Engine
The engine combustion quality during cold start was quantified by the amount of accumulated engine-out hydrocarbons over the ... Measurements were made of the various engine temperatures, engine-out total hydrocarbon emissions, and in-cylinder pressure ...
Measurement and Modeling on Wall Wetted Fuel Film Profile and Mixture Preparation in Intake Port of SI Engine
... the spray-wall interaction process leads to the generation of unburned hydrocarbons and uncontrollable mixture formation. This ... the spray-wall interaction process leads to the generation of unburned hydrocarbons and uncontrollable mixture formation. This ...
High-Volume Ethanol Fuel Composition Optimized for Cold Driving Conditions
Already at −7°C with "straight" E85 mixture composed of ethanol and petrol, the unburned hydrocarbon emissions were very high. ... Cold start and driving was possible at equal level of unburned hydrocarbons and other unwanted emission species (such as ...
The Influence of Dilution Conditions on Diesel Exhaust Particle Size Distribution Measurements
... and hydrocarbon species, during dilution and cooling of hot exhaust. ...
HC-SCR Catalyst for NO |sub|x|/sub| Reduction in a Non-Road Diesel Engine
For SCR, urea derived ammonia may be exploited but NOx can also be catalytically reduced by means of hydrocarbons (HC) ... The fuel post-injection of the engine common-rail injection system was optimized to produce a sufficient amount of hydrocarbons ...
Experimental and Modeling Study of a Diesel Oxidation Catalyst (DOC) under Transient and CPF Active Regeneration Conditions
An inhibition factor that accounts for the inhibition of reactions in the presence of high hydrocarbon concentrations was ... Conversion efficiencies of total hydrocarbon (THC), CO, and NO were quantified under each condition. ...
Influence of Oil Drain Holes on Oil Emission of a Turbocharged Gasoline Engine
In the process, the mass spectrometer is operated in high-pass filter mode to detect long-chain hydrocarbons associated with ...
HC-SCR on Silver-Based Catalyst: From Synthetic Gas Bench to Real Use
In that context, the selective catalytic reduction by hydrocarbons (HC-SCR) appears to be an interesting alternative solution, ...
Low Cetane Number Renewable Oxy-fuels for Premixed Combustion Concept Application: Experimental Investigation on a Light Duty...
The high unburnt hydrocarbon emissions at low load, conversely, require a further development of the combustion system design, ... which has a similar hexagonal hydrocarbon basis, albeit in polymer form. Lignin is currently a widely available second ...
Direct Analysis of Diesel Particulate-Bound Hydrocarbons by Gas Chromatography with Solid Sample Injection
Hydrocarbons are vaporized in this solid sample injection system and subsequen ... Particulate-bound hydrocarbons emitted by diesel engines have been analysed using a rapid new technique. The method involves ... Particulate-bound hydrocarbons emitted by diesel engines have been analysed using a rapid new technique. The method involves ... Hydrocarbons are vaporized in this solid sample injection system and subsequently become adsorbed on to a chromatography column ...
Radiocarbon and Hydrocarbon Analysis of PM Sources During WHTC Tests on a Biodiesel-Fueled Engine
... 2014-01-1243. ... It was found that the standard method for measuring hydrocarbons in PM on a filter (chain length analysis) only accounted for ... A combination of three methods was used to determine the PM origin: chain length analysis of the hydrocarbons, determination of ... Citation: Genberg, J., Tornehed, P., Andersson, O., and Stenstrom, K., "Radiocarbon and Hydrocarbon Analysis of PM Sources ...
Measurement of the local gas velocity at the outlet of a wall flow particle filter
Accuracy of Total Hydrocarbon Analyzer Measurements Measurements in the SULEV Region. 2003-01-0388 ...
A New Approach to Newton-Raphson Method to Evaluate Thermodynamics Properties for a "In-Equilibrium" Combustion Mixture
Future developments will take into account also chemical kinetics and the possible presence of unburned hydrocarbons. ...
Optical Investigation of the Effect of Fuel Jet Wall Impact Position on Soot Emissions in a Single Cylinder Common Rail Direct...
Detailed Unburned Hydrocarbon Investigations in a Highly-Dilute Diesel Low Temperature Combustion Regime ...
EGR System Fouling Control
Hydrocarbons and Particulate Matter in EGR Cooler Deposits: Effects of Gas Flow Rate, Coolant Temperature, and Oxidation ...
Emission Studies on a VCR Engine Using Stable Diesel Water Emulsion
These include carbon monoxide (CO), unburned hydrocarbons (UBHC), oxides of nitrogen (NOx), odor, particulate matter (PM) etc. ... These include carbon monoxide (CO), unburned hydrocarbons (UBHC), oxides of nitrogen (NOx), odor, particulate matter (PM) etc. ...
Engine Operating Condition and Gasoline Fuel Composition Effects on Low-Speed Pre-Ignition in High-Performance Spark Ignited...
It was concluded that a hydrocarbon based accumulation occurs in the combustion chamber over time. These additional HC are ...
Analysis of a Planar Solid Oxide Fuel Cell Based Automotive Auxiliary Power Unit
Comparison of Emissions from Natural Gas and Gasoline Fuelled Engines - Total Hydrocarbon and Methane Emissions and Exhaust Gas ...
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Currently, regulations on vehicle evaporative emissions only focus on the sum of Total Hydrocarbons (THC) without taking into ...
Study of the Mixing and Combustion Processes of Consecutive Short Double Diesel Injections
... poly-aromatic hydrocarbons (PAH) and hydroxides. Finally, soot concentration is measured by the Laser Extinction Method. The ...
Elemental Composition Determination and Stoichiometric Air-Fuel Ratios of Gasoline Containing Ethanol
Several standardized empirical methods have been developed in the past for estimating the hydrogen content of hydrocarbon fuels ... and most of the estimation methods developed for hydrocarbon fuels are not satisfactory for use with gasoline-ethanol blends, ... fuel has resulted in changes in other physical and chemical properties due to the differences between ethanol and hydrocarbons ...
Catalytic Decomposition of Gaseous Byproducts from Primary Solid Waste Treatment Technologies
Contaminants utilized as COS challenges represent a wide range of chemical species including polynuclear aromatic hydrocarbons ... refractory hydrocarbons (methane), hydrogen sulfide, and carbon monoxide. The COS prototype, in which emissions are pumped into ... benzo-a-pyrene and naphthalene), aromatic hydrocarbons (benzene), organic acids (acetic acid), ketones (acetone), esters ( ... the catalytic reactor and VOC oxidation performance is evaluated using an integrated Total Hydrocarbon Analyzer (THA), was ...
Catalyst Technologies for Future Automotive Emission Systems
... must be carefully considered in order to make substantial progress towards meeting che more stringent NOx and hydrocarbon ... must be carefully considered in order to make substantial progress towards meeting che more stringent NOx and hydrocarbon ...
SAE MOBILUS
Hydrocarbons (2942) Emissions (950) Combustion and combustion processes (786) Nitrogen oxides (741) Particulate matter (PM) ( ... Select Polycyclic Aromatic Hydrocarbons in Diesel Engine Exhaust Both with and without Aftertreatment. ... Polycyclic Aromatic Hydrocarbons in Diesel Engine Exhaust Both with and without Aftertreatment. ... Strategies to Define Surrogate Fuels for the Description of the Multicomponent Evaporation Behavior of Hydrocarbon Fuels. ...
SAE MOBILUS
The in-line hydrocarbon (HC) adsorber is a passive after-treatment technology to address cold-start hydrocarbons in automotive ... Ballinger Todd H. Manning Wedny A. Lafyatis David S. "Hydrocarbon Trap Technology for the Reduction of Cold-Start Hydrocarbon ... In-line Hydrocarbon Adsorber for Cold Start Emissions - Part II. Download File Type. Download. ... In-line Hydrocarbon Adsorber for Cold Start Emissions - Part II. Technical Paper ...