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In early 2020, UK-based independent testing firm Emissions Analytics published a study claiming that tire particulate wear emissions were 1,000 times worse than exhaustemissions ( earlier post ). —Emissions Analytics. Quoting such ratios, however, needs careful interpretation.
Southwest Research Institute engineers have developed the next generation of clean diesel engine technology to reduce hazardous nitrogen oxides (NO x ) and carbon dioxide emissions while minimizing fuel consumption. g/hp-hr NO x emissions). g/hp-hr NO x emissions). The work is described in a pair of SAE Technical Papers.
opposed-piston heavy-duty diesel engine has achieved performance results that comply with pending 2027 requirements of the US Environmental Protection Agency (EPA) and California to reduce sharply emissions of nitrogen oxides (NO x ). Achates Power’s innovative 3-cylinder, 10.6L Furthermore, the 10.6L Furthermore, the 10.6L
opposed-piston (OP) heavy-duty diesel engine achieved Ultralow NO x (ULNO x ) performance results. In that mode, Achates was able to reduce NO x below the original target and increase exhaust temperatures further. Post-turbine exhaust gas temperature was between 284 °C and 328 °C everywhere between 25% load and 100% load.
In 2012, the International Agency for Research on Cancer (IARC), which is part of the World Health Organization (WHO), classified diesel engine exhaust (DEE) as carcinogenic to humans (Group 1). DieselEmissions Health' Earlier post.). China, India, Brazil) following with a delay of about 5 to 10 years.
Metal particles from the abrasion of brake pads (brake abrasion dust, BAD) may cause inflammation and reduce the ability of immune cells to kill bacteria, similarly to particles derived from dieselexhaust particles (DEP), according to a new study led by researchers at King’s College London. It is estimated that only 7% of PM 2.5
Startup ClearFlame Engine Technologies announced a partnership with Alto Ingredients, a leading producer of specialty alcohols and essential ingredients, to conduct pilot demonstrations of ClearFlame’s solution for diesel engines using low-cost ethanol in Class 8 trucks.
Researchers from the University of Liverpool, Queen Mary University, London and Trinity College Dublin have linked exposure to dieselexhaust particles (DEPs) to susceptibility to pneumococcal disease. Many of these fatalities have been linked to exposure to high levels of airborne particulates, such as dieselexhaust particles (DEPs).
TDI diesel for Euro 6d; SCR twin-dosing. Volkswagen continues to refine its most important diesel engine, the 2.0-liter With SCR twin dosing technology in the exhaust gas system, the diesel unit now undercuts the Euro 6d emission standard limits while also running quietly and smoothly, according to the company.
This research, published in the journal Separation and Purification Technology , shows that ozone can be used to remove not only SO x but also NO x from fossil fuel combustion exhaust streams. In this study, to improve absorption performance of SO 2 and NO 2 , we added ozone in exhaust gas. 2018.12.077. 2018.12.077.
A team from Empa - Swiss Federal Laboratories for Materials Science and Technology and FPT Motorenforschung reports in an open-access paper in the journal Fuel on the performance and emission characteristics of an 11-liter heavy-duty compression ignition engine which was optimized specifically for DME (dimethyl ether) combustion.
liter, heavy-duty opposed-piston, three-cylinder diesel engine it developed in a project funded by the California Air Resources Board (CARB) and several partners ( earlier post ) has entered fleet service with WALMART Corporation in a Peterbilt 579 tractor. Achates Power announced that the 10.6-liter, liter engine.
Vitesco Technologies, formerly (until September 2019) the Continental Powertrain Division, has won a major contract from an European vehicle manufacturer for the supply of innovative electric heating elements for diesel catalytic converters. In the extremely slow “Traffic for London” cycle, NO x emissions fell by 62%.
Now, Argent has switched its fleet from petroleum diesel to Neste MY Renewable Diesel. We decided to switch to renewable diesel once our quality and availability concerns were satisfied. We decided to switch to renewable diesel once our quality and availability concerns were satisfied. Our experience has been positive.
According to a study commissioned by the Washington, DC-based Propane Education & Research Council (PERC), NO x emissions measured from propane autogas school buses were substantially lower than those measured from diesel school buses. For the stop-and-go route, NO x emissions were 34 times higher for the diesel school bus.
A team at Oak Ridge National Laboratory (ORNL) has achieved diesel-like efficiency in a single-cylinder spark-ignition (SI) research engine while maintaining compatibility with stoichiometric 3-way catalyst (TWC) systems. 1) with cooled exhaust gas recirculation (EGR) and high compression ratio (13.3:1 Splitter et al.
IAV has developed a particularly closed-coupled dieselexhaust gas aftertreatment (EAT) system. Future diesel powertrains will need to be capable of meeting limit values that are even tighter than EU6. This way, exhaust gas flows through DOC and SCRF before it enters the turbine. Topology of the variants.
Exhaust particle size distributions measured by ELPI (color map) and particle concentration measured by CPC (white line) during individual engine braking conditions (speed change from 32 km/h to 0 km/h). The exhaust sample was taken from the exhaust manifold. The exhaust sample was taken from the exhaust manifold.
The scientists showed that there are a number of organic molecules from diverse sources present in modern concrete structures and asphalt pavements: phthalates, dieselexhaust particulates, surfactants, and windshield washer fluids.
CAT-DEF—Catalyzed DieselExhaust Fluid—is an SwRI-developed catalyst- and surfactant-modified dieselexhaust fluid (DEF) solution. The internally funded advancement successfully reduced heavy-duty diesel engine nitrogen oxide (NO x ) emissions to meet the California Air Resources Board (CARB) 2027 standards.
One of its outstanding features is the in-line six, which meets the EU Stage V emission standard for locomotives without the need for an exhaust after-treatment system (EATS). This means that a single technical solution equally covers emission requirements for all currently recognised emissions threshold values up to EU Stage V.
Mercedes-Benz Trucks is introducing the third generation of its OM 471 heavy-duty diesel engine this year; the engine will deliver increased fuel efficiency and compliance with the strictest emissions standards such as Euro VIe. Newly-developed exhaust gas aftertreatment system. PowerShift Advanced and Top Torque.
At the IAA Commercial Vehicles Show, Cummins introduced a concept emissions control system capable of minimizing emissions to levels previously thought unfeasible, including a possible next level of Euro VII regulations anticipated during the coming decade. Low NO x integrated system concept from Cummins. Euro 7 Vision.
The aim is to help meet more stringent emissions standards such as US 10 and Euro VI; higher injection pressures help lower fuel consumption and emissions. This increases flexibility in terms of engine design, promotes lower exhaust and fuel consumption levels, and results in even quieter operation.
A team from the California Air Resources Board (ARB), in partnership with the City of Sacramento, has characterized the in-use emissions from model year (MY) 2010 or newer diesel, liquefied natural gas (LNG) and hydraulic hybrid diesel engines during real-world refuse truck operation. Diesel 1, which was certified at 0.18
At the 17 th Supercharging conference this week in Dresden, Controlled Power Technologies (CPT) will launch what it says is the first water-cooled electric supercharger developed for “quasi-continuous” boosting of commercial diesel engines, including those developed for off highway applications. tonnes gross vehicle weight.
Mercedes-Benz has begun sales of two diesel models of the new GLE SUV which already comply with the coming Euro 6d emissions standard. The OM 656 six-cylinder diesel engine comes with 243 kW (330 hp) and 700 N·m of torque in the GLE 400 d 4MATIC (combined fuel consumption: 7.5-7.0
In a recent open-access paper published in ACS’ Environmental Science & Technology , researchers from the University of York report that alcohols in windshield washer fluid account for a larger fraction of real-world vehicle emissions than previous estimates have suggested. Cliff et al. —Cliff et al.
The researchers found that biodiesel has many advantages over regular diesel even in a very low blend percentage, including low emissions of particulate matter, combustion elements (mainly sulfur), elemental carbon, and carbon monoxide. Biodiesel may produce high NO x emissions. Kumar et al.
Audi of America introduced four new TDI clean diesel models for the US market this year—the Audi A8, A7, A6, Q5—along with an updated Q7 TDI, all equipped with a second-generation 3.0L V6 TDI diesel engine. ” One of our primary goals and objectives is to level the playing field for clean diesel vehicles.
In a study in the journal Fuel , researchers in India report that diesel modified with nanoparticles of aluminum (Al), iron (Fe) or boron (B) reduced specific fuel consumption by up to 7% compared with standard diesel. Emissions of CO and hydrocarbons were reduced, however NO x marginally increased. —Mehta et al.
New Duramax 4-cylinder diesel. Chevrolet Sales Thailand introduced the new-generation MY14 Duramax four-cylinder turbo-diesel engine in 2.5- liter diesel delivers 11% more power and 6% more torque, while consuming 4.3% The new Duramax engine is Euro-4 compliant and can be upgraded to meet Euro-5, -6 and US emission standards.
Caterpillar engineers have been exploring a novel 6-stroke compression ignition engine cycle in search of a low-emission system that retains fuel efficiency. The fourth stroke omits the conventional exhaust event in order to recompress the combustion gases. DieselEmissions Engines Fuel Efficiency Heavy-duty'
Since 2018, Volkswagen has used only SCR exhaust gas treatment systems with its diesel engines. SCR (selective catalytic reduction) technology significantly reduces nitrogen oxides in the exhaust gas. TDI Evo with 110 kW (150 PS), which already meets the technical requirements of the future Euro 6d emission standard as a result.
Freight transportation is a pillar of the US national economy, but while long-haul trucks account for less than 6% of the vehicle miles traveled over US highways, they account for about 40% of the emissions of air polluting particulate matter and about 55% of nitrogen oxides, the precursor to ozone in the atmosphere, the study said.
Researchers at EPFL have patented a new concept that could cut trucks’ CO 2 emissions by almost 90%. The EPFL system captures CO 2 directly in the trucks’ exhaust system and liquefies it in a box on the vehicle’s roof. First, the vehicle’s flue gases in the exhaust pipe are cooled down and the water is separated from the gases.
A research consortium led by Ford Research and Innovation Center Aachen is currently investigating the technical conditions under which diesel vehicles can run on dimethyl ether (DME) as an alternative fuel. With dynamic blending, even flex-fuel operation (diesel or DME/diesel) would be possible while retaining the original diesel system.
Southwest Research Institute (SwRI) is helping a client develop a simple post-refinery treatment process that reduces exhaustemissions from diesel engines by overcoming the soot/nitrogen oxides (NO x ) reduction trade-off that has plagued engine researchers for decades.
Fiat 500L running in the Bosch Diesel Challenge. MultiJet II 105 HP diesel with Start&Stop, covered the 800-kilometer (497-mile) route from Turin to Paris on an average of 27 liters (7.1 MultiJet II 105 HP diesel with Start&Stop, covered the 800-kilometer (497-mile) route from Turin to Paris on an average of 27 liters (7.1
Starting August 9, 2022, applications will be accepted in California for replacement of eligible Class 8 trucks with zero-emission technology. This solicitation will remain open until all funding is exhausted. More than 50% of the total project funds are expected to benefit disadvantaged or low-income communities.
Southwest Research Institute (SwRI) announced preliminary test results of its Dedicated-Exhaust Gas Recirculation (D-EGR) demonstration vehicle ( earlier post ) at the SAE 2014 World Congress in Detroit. Terry Alger, assistant director in SwRI’s Engine, Emissions and Vehicle Research Division. Overall, the engine offered a 13.1%
These vehicles are also significant sources of oxides of nitrogen (NO x ) and particulate matter (PM), contributing nearly 31% of all statewide NOx emissions as well as 26% of total statewide diesel PM emissions. Warranty, Useful Life, and Emissions Warranty Information and Reporting improvements. Source: CARB.
Mercedes-Benz has expanded the powertrain line-up of its new G-Class with an efficient diesel variant. l/100 km; combined CO 2 emissions: 259-252 g/km) is equipped with an OM 656 diesel( earlier post ). l/100 km, combined CO 2 emissions: 276-263 g/km), the AMG G 63 (fuel consumption, combined: 13.1 The most efficient G.
Detroit Diesel will pay $28.5 million in a settlement with the US Environmental Protection Agency (EPA) and the US Department of Justice (DOJ) to resolve alleged violations of the Clean Air Act for selling heavy-duty diesel engines that were not certified by EPA and did not meet applicable emission standards.
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