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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.
An electric exhaustgas turbocharger, which in future will be used for the first time in a series production model, is already in the final stages of development. This electronically-controlled electric motor drives the compressor wheel before this accepts the exhaustgas flow.
The SL 43 features an M139 in-line two-liter, four-cylinder gasoline engine with an electric exhaustgas turbocharger—used for the first time in a production vehicle. The electric exhaustgas turbocharger is a fascinating example of the extensive transfer between Formula 1 technology and the development of production vehicles.
However, during development, the project team was able to exceed the program expectation for engine-out NO x and exhaust temperature control in the catalyst warm-up mode and concluded that the tailpipe NO x targets can be met without the close coupled light-off SCR. The OP engine operates at nearly ideal temperature range.
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). SwRI developed the technology for the California Air Resources Board (CARB).
“Blue” hydrogen—produced through steam methane reforming (SMR) of natural gas or coal gasification, but with CO 2 capture and storage—is being described as having low or zero carbon emissions. Carbon dioxide emissions, including emissions from developing, processing, and transporting the fuels, are shown in orange.
Rolls-Royce is supplying two mtu 16V 4000 M55RN gas engines to Sembcorp Marine Integrated Yard for the construction of the first liquefied natural gas (LNG)-hybrid powered tug. This is the first LNG-hybrid tug to be powered by mtu gas engines. The new engines are part of Rolls-Royce’s Green and High-Tech program.
The new VW Golf is now also available in certain markets with natural gas drive: the Golf TGI is equipped with a 1.5-liter liter four-cylinder engine with 96 kW / 130 PS and three natural gas fuel tanks. The tanks are integrated into the underbody and permit a range of around 400 kilometers (WLTP) in pure natural gas mode.
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 exhaustgas. 2018.12.077. 2018.12.077.
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.
ClearFlame anticipates its engine running on ethanol can reduce GHG vehicle emissions by more than 45% and offer an estimated 15-30% TCO savings when compared with a diesel-fueled solution. ClearFlame uses soot-free “Clear” ExhaustGas Recirculation (EGR) to maintain this ratio under varying load conditions. Blumreiter, J.,
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. from 16.5)
Developed for hybrid electric vehicles (HEVs) and plug-in hybrid electric vehicles (PHEVs), BorgWarner’s innovative Exhaust Heat Recovery System (EHRS) can improve fuel economy by up to 8.5% and reduce emissions significantly. —Joe Fadool, President and General Manager, BorgWarner Emissions & Thermal Systems.
With SCR twin dosing technology in the exhaustgas system, the diesel unit now undercuts the Euro 6d emission standard limits while also running quietly and smoothly, according to the company. In 2015, the emissions scandal erupted over the use of defeat devices in Volkswagen engines for MY 2009 through 2015.
Volkswagen has equipped its natural gas models of the Polo TGI and Golf TGI with a third natural gas tank made of specially coated, high-strength steel. liters and extends the natural gas storage to 91.5 liters and extends the natural gas storage to 91.5 1, to increase efficiency and decrease CO 2 emissions.
A well-known automaker has placed an order with Rheinmetall Group subsidiary Pierburg for exhaustgas recirculation (EGR) modules, with a lifetime value of around €300 million. Exhaustgas recycling systems reduce nitrogen oxide emissions and lead to lower fuel consumption.
There is no immediate concern for copper resources, but the average ore grade is declining as higher grade deposits become exhausted. The NWIS comprises mostly gas-fired generation and has a GHG emission factor of 620 g CO 2 -e kWh -1. Production in a lower emission region would significantly decrease the GHG emission intensity.
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.
The capability to heat up the catalytic converter rapidly at all times increases the overall efficiency of exhaust-gas aftertreatment. The EMICAT e-catalyst developed by Vitesco Technologies ensures effective exhaustgas aftertreatment, even when the exhaustgas is actually too cold for this purpose.
It is the only diesel engine operating on the road capable of meeting CARB’s 2027 regulation, which requires a 90% reduction in emissions of NO x compared to current standards. The catalyst light-off mode delivers the capability that allows Achates to manage extremely low engine-out NO x and also very high exhaustgas temperatures.
FlyZero is the UK’s Aerospace Technology Institute (ATI) project aiming to realize zero-carbon emission commercial aviation by 2030. Funded by the Department for Business, Energy and Industrial Strategy, the project FlyZero began in early 2021 as an intensive research project investigating zero-carbon emission commercial flight.
MAN Energy Solutions’ Two-Stroke Business has surpassed 1,000 orders for secondary-measure, Tier III-compliant, emission-reduction technology for its portfolio of MAN B&W-branded, low-speed ship engines. —Bjarne Foldager, Senior Vice President and Head of Two-Stroke Business at MAN Energy Solutions.
Under a joint development agreement signed at the Kormarine 2021 exhibition in Busan last month, the two companies will together develop engine solutions that further reduce greenhouse gasemissions from methane while improving both the engine’s efficiency and footprint for reduced costs. development. The X82DF-2.0
An electrically driven compressor for precise exhaustgas recirculation is also used. Then we modify the timing and pressure of the injection, among other things, and look at exhaustemission values and fuel consumption. This is done via exhaustgas recirculation (EGR). —Patrik Soltic.
Audi is adding a new member to its A3 family: the A3 Sportback 30 g-tron natural gas vehicle. Operation with natural gas or biomethane makes the compact model economical and more climate-friendly with low emissions. With full gas tanks, the car has an NEDC range of up to 495 (307.6 The A3 Sportback 30 g-tron 1.5
liter diesel, prominently showing the closely attached exhaust aftertreatment system. The MQB allows the integration of alternatives, for example, natural gas, hybrid and electric drives, in addition to the conventional gasoline and diesel power units. The cylinder head intake and exhaust valves are arranged one behind the other.
New research from Chalmers University of Technology, Sweden, finds that the discharge water from ships’ exhaustgas treatment systems—i.e., scrubbers—is responsible for up to 9% of certain emissions of carcinogenic and environmentally harmful substances in the Baltic Sea—considerably more than was previously known.
Volkswagen has launched a new range of diesel engines (TDI) characterized by extremely low nitrogen oxide emissions (NO x ). The Touareg V8 TDI, generating 310 kW (421 PS) ( earlier post ), is among the first Volkswagens to feature an exhaust purification system that brings NO x to these low level: it emits between just 0.01
Power management company Eaton’s Vehicle Group has demonstrated cylinder deactivation (CDA) as an effective technology for meeting future global emissions requirements for diesel-engine powered commercial vehicles. New emissions regulations spearheaded by the California Air Resources Board (CARB), U.S. Rapid catalyst warm-up essential.
A study by a team from UC Riverside has assessed the potential of increasing ethanol content in California reformulated gasoline (CaRFG) by investigating the exhaustemissions from a fleet of 20 Tier 3 light-duty vehicles. Acetaldehyde and ethanol emissions responded strongly with ethanol across the fleet of 20 vehicles.
a Sumitomo Corporation Group company, jointly demonstrated a new waste heat recovery system based on a thermoelectric generator (TEG), which generates electrical power via exhaustgas heat. of CO 2 emissions (i.e. The TEG unit was installed in the exhaust pipe at the downstream of the catalyst. With the TEG, 1.9%
Researchers have used a novel near-infrared light imaging technique to capture the first cross-sectional images of carbon dioxide in the exhaust plume of a commercial jet engine. The researchers used their new chemical species tomography setup to capture the first images of carbon dioxide exhaust from a commercial aircraft engine.
CAT-DEF—Catalyzed Diesel Exhaust Fluid—is an SwRI-developed catalyst- and surfactant-modified diesel exhaust 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.
Mercedes-Benz has begun sales of two diesel models of the new GLE SUV which already comply with the coming Euro 6d emissions standard. l/100 km; combined CO 2 emissions: 199-184 g/km) and costs €76,100.50. l/100 km; combined CO 2 emissions: 198-184 g/km) is available from €69,496.
CVVD optimizes both engine performance and fuel efficiency while reducing emissions. The technology cuts emissions by 12%. The new powertrain is the first to utilize the Group’s new CVVD technology and also features Low-Pressure ExhaustGas Recirculation (LP EGR) to further optimize fuel efficiency.
In a paper presented at the 2019 Vienna Motor Symposium this week, Delphi Technologies will unveil a new 500+ bar GDi system that can reduce particulate emissions by up to 50% compared to state-of-the-art 350 bar system without expensive engine design modifications. Delphi 500+ bar GDi pump. Delphi 500+ bar GDi injector. —Walter Piock.
Rolls-Royce has conducted successful tests of a 12-cylinder gas variant of the mtu Series 4000 L64 engine running on 100% hydrogen fuel. The tests, carried out by the Power Systems business unit, showed very good characteristics in terms of efficiency, performance, emissions and combustion. We are very pleased with the rapid progress.
However, because a comparatively rich mixture is burned during the first half of combustion, engine-out NO x emissions are not reduced sufficiently, and the emissions reduction provided by the three-way catalyst (TWC) is insufficient, Kondo noted. Homogeneous lean premixed gas is known to have poor flame propagation characteristics.
This feature also delivers the sociability benefits that contractors are looking for by reducing on-site noise and exhaustemissions. Improving fuel efficiency reduces CO 2 greenhouse gasemissions. The efficient SCR technology means that cooled exhaustgas recirculation (EGR) is not needed on the engine.
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.
applied partially premixed combustion mode to a direct-injection natural gas engine based on a 3D model coupled with a dual-fuel chemical kinetic mechanism (n-heptane/natural gas). Owing to the advantages in emission reduction and reserves, natural gas engines are more and more concerned. —Li et al.
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 exhaustgas aftertreatment system. PowerShift Advanced and Top Torque.
The company is one of the first wholesalers to utilize the technology and comes as the California Air Resources Board (CARB) announced plans in January to impose zero-emission requirements on TRUs sold or operated in California by 31 December 2029.
Now, MIT engineers are proposing using an ammonia-based selective catalytic reduction (SCR) system that could result in an approximately 95% reduction in NO x emissions in exchange for a ~0.5% The trend towards smaller engine cores with smaller mass flow rates in the core stream, presents new opportunities for emissions control.
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