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There are widespread policy assumptions that the phase-out of gasoline and diesel internal combustion engines will over time lead to much reduced emissions of Volatile Organic Compounds (VOCs) from road transport and related fuels. While some VOCs are released in exhaust, others may arise from an unexpected source—e.g.,
Results of a study led by a team from the National Renewable Energy Laboratory on the impact of butanol-gasoline blends on light-duty vehicle emissions suggest that widespread deployment of n-butanol or i-butanol in the gasoline pool could result in changes to the estimated emissions of alcohols and carbonyls in the emissions inventory.
A study by a team from UC Riverside has assessed the potential of increasing ethanol content in California reformulated gasoline (CaRFG) by investigating the exhaust emissions from a fleet of 20 Tier 3 light-duty vehicles. Formaldehyde emissions did not show a statistically significant effect.
gasoline and Diesel fuel), alcohol-based liquid fuels (e.g., There are two basic exhaust emissions and fuel economy tests described in J1711. Calculations are provided that combine the CD and charge-sustaining (CS) behavior according to in-use driving statistics. Earlier post.) compressed natural gas).
The California Air Resources Board (CARB) has released the results of a multiyear study evaluating exhaust emissions from the use of California Reformulated Gasoline (CaRFG) that contains 15 volume percent ethanol (E15). California currently limits the ethanol content of gasoline to 10 percent.
the E30 and E78—led to statistically significant reductions of 9%–13% for total hydrocarbon (THC); 13%–44% for non-methane hydrocarbon (NMHC); 20%–35% for carbon monoxide (CO); and 17%–36% for nitrogen oxides (NO x ) emissions compared to the high-aromatics E10 fuel. Their paper is published in the ACS journal Energy & Fuels.
A new report by the UK’s Office for National Statistics (ONS) finds that greenhouse gas (GHG) emissions from road transport in the UK rose by 6% from 1990 to 2017. Diesel use exceeded gasoline use from 2005 onwards. Source: Office for National Statistics – UK Environmental Accounts, Energy Use datasets.
A transition from the gasoline or diesel ICE to a full gasoline/diesel hybrid can significantly reduce emissions. This could be paired with combustion technologies with highly diluted combustion (stoichiometric with exhaust gas recirculation (EGR) as well as lean burn with excess-air ratios above 2). Gas exchange.
Volkswagen is holding media drive events this week for the sporty new 2013 Jetta Turbo Hybrid ( earlier post ), which features the second version of a Volkswagen gasoline-electric hybrid drive system: a 1.4L Volkswagen’s first gasoline-electric hybrid system—that for the Touareg Hybrid—combines a 3.3-liter Click to enlarge.
A new study quantifying emissions from a fleet of gasoline direct injection (GDI) engines and port fuel injection (PFI) engines finds that the measured decrease in CO 2 emissions from GDIs is much greater than the potential climate forcing associated with higher black carbon emissions from GDI engines. of the data. Credit: ACS, Saliba et al.
Fuel Efficiency Improvement Technologies for Conventional Stoichiometric Gasoline Direct Injection Multi-Cylinder Internal Combustion Engine. Only statistically valid fuel economy improvements (95% confidence level) will be considered for Phase II funding consideration.
The project led by Tang-Wei Kuo from General Motors is focused on optimizing multi-hole injectors for spark-ignited direct-injection (SIDI) gasoline engines. Recently, the most popular SIDI gasoline injectors have been multi-hole type. Co-investigators are Ronald Grover (GM), Sreekanth Pannala (ORNL), and Wael Elwasif (ORNL).
liter gasoline unit combining turbocharging, direct fuel injection and VALVETRONIC fully-variable valve management; a new 3.0-liter liter gasoline unit combining turbocharging, direct fuel injection and VALVETRONIC fully-variable valve management; a new 3.0-liter Liter Straight-Six Gasoline Engine with TwinPower Turbo.
This statistic increases to two-thirds of all new registrations if the data are restricted to passenger cars, according to Bosch. A recent example is the Chevrolet Cruze, for which Bosch supplies the diesel fuel injection system along with the exhaust-gas treatment system, engine control system, ceramic spark plugs, and sensors.
As well as achieving significant emissions reductions based on continuous evolutionary advances of the TwinPower Turbo gasoline and diesel engines, future BMW core brand models will also benefit from the transfer of new electrified drive technology (BMW eDrive) developed by the BMW i sub-brand. BMW eDrive. seconds, EU fuel consumption of 2.1
gasoline or diesel) engines for automotive applications use slider/crank mechanisms to create torque on an engine’s output shaft from forces applied to pistons as a result of the pressure created by the combustion of fuel. Statistically valid fuel economy improvements (95% confidence level) of at least 5.0% are desired.
Elastomers and plastics showed some measurable effects from exposure to gasoline hydrocarbons with increasing ethanol content. The NREL team concluded that when those factors are taken into account, the conclusion that engines will experience mechanical engine failure when operating on E15 is not supported by the data.
Using statistical methods, the scientists infer emissions from these data within a radius of about one kilometer of the measurement location. Generally, different combustion and exhaust treatment characteristics result in significantly higher NO x /CO 2 emission ratios for diesel powered cars than for gasoline.
No statistically significant change was detected. GM has produced more than 5 million flex-fuel vehicles capable of handling ethanol blends of up to 85% (E85), but still has remaining questions over the impact of mid-range blends on durability and catalyst lifetime in non-E85 gasoline vehicles, for example. Earlier post.).
percent share of the market earlier this year — we’ve yet to see any statistical analysis putting plug-in hybrids above 1.9 In the past year, virtually every major automaker has made a pivot to PHEVs as a bridge between gasoline-powered vehicles and fully electric vehicles. percent with battery only models representing 9.4
Thrust I has concentrated on improving near-term SI engine efficiency and assessing desirable properties for bio-derived or bio-based components (blendstocks) to be blended with petroleum-derived gasoline. The research teams have identified more than 40 promising blendstock candidates. Click to enlarge.
Prospects and Challenges in 2024 Combining the environmental benefits of electric vehicles (EVs) with the long-range and rapid refueling of traditional gasoline vehicles, hydrogen fuel cell electric vehicles (FCEVs) are becoming a compelling option for eco-minded car owners. Without question, FCEVs have the potential for broader adoption.
Ram says it can charge at 800 volts, claiming users could add 100 miles of range in 10 minutes (a carefully chosen statistic that assumes a largely depleted pack, optimum temperatures, and other ideal conditions). Expressive styling, ‘white-knuckle’ performance. That “white-knuckle” descriptor may apply only to higher-end models.
Most charging of EVs happens at home and/or at work and the price for electricity is much less than that of gasoline. Compare that to the average price for gasoline in 2021 , which was $3.01 In the fueling/charging department, the EVs were less costly to charge than the gasoline-powered vehicles were to refuel over 45,000 miles.
For example, fuel economy statistics and a graphic display of the electric range is shown on the navigation map. The Q7 PHEV will arrive in dealerships in Germany in 2016, and will likely come to the US, although perhaps with a gasoline-engine variant. US gal) of gasoline. Audi e-tron quattro concept SUV. liters (1.0
Although the EPA has not as of this writing released the final fuel economy numbers for the US A3 e-tron, Filip Brabec, Director, Product Management, Audi of America, said that the figures will be around 83 to 86 MPGe combined (depending on the equipment level), with 35 to 39 mpg gasoline only and 16-17 miles of EV range. Click to enlarge.
The alternative-fuel car evolved to reduce exhaust emissions and other problems derived from burning fossil fuels. Though the PHEV combines the two types of energy and power, it is not merely a temporary “transition” between gasoline and diesel cars to pure electric cars. Appendix D: Vehicle Driving Statistics. slow charge.
liter gasoline automatic; RWD, 300PS (296 hp, 221 kW) 3.0-liter liter gasoline automatic. The new XF offers a choice of four- and six-cylinder Euro 6 diesel and gasoline engines and transmissions ranging from the 104g CO 2 /km 2.0-liter The powertrain range will consist of: 163PS (161 hp, 120 kW) and 180PS (178 hp, 132 kW) 2.0-liter
Volkswagen uses a turbocharged direct gasoline injection engine (1.4 Full integration of the exhaust manifold in the cylinder head lets the 1.4 There is also an exhaust camshaft adjuster. The front-wheel drive Passat GTE accelerates to 100 km/h (62 mph) in less than 8.0 The maximum injection pressure of the 1.4
Traffic exhaust is a growing threat in fast-expanding cities in China and India, as the steady increase in the number of cars and trucks on the road undermines efforts to curb vehicle emissions. I highlight in particular those policies that favor the use of diesel over gasoline in vehicles.
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