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Catalytic converters have been used in the US since the 1970s as a way to clean up pollutants from vehicle exhaust. In the catalytic process, rare metals such as platinum, are used in a chemical reaction to convert carbon monoxide and other pollutants to non-toxic carbon dioxide, nitrogen, and water. —Yong Wang.
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. Volkswagen developed twin dosing technology for the exhaust gas treatment. The second SCR catalytic converter is installed in the vehicle floor.
Over the past few months, we have converted it to DME together with our partner FPT. In addition, the valves and valve seat inserts were converted to materials suitable for DME. An electrically driven compressor for precise exhaust gas recirculation is also used. This is done via exhaust gas recirculation (EGR).
A team at Monsanto and colleagues at AVL Powertrain have successfully designed and demonstrated an onboard low-temperature ethanol reformer that can be driven by exhaust heat. Many papers have described high-temperature steam reforming of ethanol at around 600 °C but.this temperature is too high to be driven by engine exhaust.
When reforming is not used, the fuel and exhaust pass through CV2 unchanged. The basic concept of TCR involves using exhaust heat to promote on-board reforming of hydrocarbon fuels into syngas (a mixture of carbon monoxide and hydrogen). In addition, ethanol produced by fermentation typically contains considerable water.
A new ceramic hollow fiber substrate for catalytic converters designed by Dr. Benjamin Kingsbury and colleagues at Imperial College London could cut the size and precious metal loading of the devices in automobiles while reducing fuel consumption and and manufacturing costs. Kingsbury has founded MicroTech Ceramics Ltd. WO 2013175239 A2.
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. Adblue is injected selectively upstream of two SCR catalytic converters which are arranged in series.
The 85 kW / 115 PS gasoline-fired engine is the first of its kind to be combined with a four-way catalytic converter and installed in the up! Exhaust gas after-treatment paired with innovative features inside the engine enables the GTI engine to meet the new EU 6AG (Euro 6d-TEMP) emission standard.
Engineers from the University of Sunderland (UK), in collaboration with Shanghai’s Shen Li High Technology, ComeSys Europe and AVID vehicles, have launched ECO2Trans, a project to convert two buses to a fuel cell, battery and capacitor combination. Click to enlarge.
At SEMA360, Chevrolet will showcase a 1977 K5 Blazer converted to all-electric propulsion. To convert the 1977 K5 Blazer, the team first removed from the Blazer the original 175-horsepower, 400 cubic-inch (6.55-liter) liter) V-8, three-speed automatic, fuel system and exhaust. 200-horsepower electric motor.
Power management company Eaton and Tenneco announced a joint development agreement between Eaton’s Vehicle Group and Tenneco’s Clean Air business group to produce an integrated exhaust thermal management system that will enable commercial truck and light vehicle manufacturers to meet upcoming emissions regulations.
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. Researchers at EPFL have patented a new concept that could cut trucks’ CO 2 emissions by almost 90%.
Argent has a fleet of about 20 pieces of equipment comprising wheel loaders, excavators, bobcats and a couple of water trucks. We have noticed that the exhaust appears cleaner and seems less toxic. Our experience has been positive. There’s no change in engine performance. We absolutely love the renewable nature of this product.
Able to convert waste heat directly into electrical power, the E-PowerPack uses Organic Rankine Cycle (ORC) technology to reduce ship fuel consumption and CO 2 emissions. These include exhaust gas waste heat, which accounts for 50% of the energy from combusted fuel, but also liquid sources at lower temperatures, such as engine jacket water.
million project to find new catalytic materials that work at lower exhaust temperatures, allowing automakers to build vehicles that operate more efficiently while retaining the ability to clean emissions before they leave the tailpipe. Catalytic converters clean vehicle exhaust into nitrogen, water and carbon dioxide.
It then sprays the treated sea-water into the exhaust funnel, where CO 2 is converted into bicarbonates, SO 2 into sulfates and NO x into nitrates through natural chemical processes. The process water is collected, filtered, and pumped into an aft tank for further processing, and eventually returned to the ocean.
Just like that unit, the new engine is an in-line six cylinder engine with unit injectors and catalytic exhaust treatment (SCR). The SCR system, which converts the NO x in the exhaust gases into nitrogen and water vapor, is integrated with the particulate filter (DPF) in a compact unit that takes up the minimum possible space.
The heat of the exhaust gases is recovered to preheat the inlet gas with high-temperature heat exchangers when the system operates in a slightly exothermic mode. Our many years of experience on the electrochemical converters and thermal optimization of processes leads us today to a maturity level ever. It can produce between 1 and 2.5
The vehicle meets Euro 6 exhaust standards. Both the exhaust inflow to drive the turbos and the supply of fresh air, plus the channelling of compressed air to the combustion chambers, have been designed to ensure that the three compression units work as a team as effectively as possible at all engine speeds. liters/100 kilometers (37.3
By using light-activated quantum dots to fire particular enzymes within microbial cells, the researchers were able to create “living factories” that eat CO 2 and convert it into products such as biodegradable plastic, gasoline, ammonia and biodiesel. A paper on their work appears in the Journal of the American Chemical Society. Ding et al.
An actuator in the exhaust system, as fitted to the first SQ5 TDI, gives the V6 a sonorous sound. The intercooler has been changed over from an air/air cooler in the bumper to an indirect water/air cooler in the inside V of the engine. This offers the advantage since exhaust gas cleaning responds more quickly. liters (0.2
To reduce emissions values further, Volkswagen has also implemented an oxidation catalytic converter, a diesel particulate filter and a NO x storage catalytic converter. Until now, the most fuel-efficient Golf was only offered as a single specific BlueMotion model.
The piston is moved by the combustion gas, while magnets attached to the piston move within a linear coil, thereby converting kinetic energy to electrical energy. Poppet valves seated in a water-cooled cylinder head were actuated by hydraulic valve trains to control exhaust valve timing.
The catalyst removes the gaseous pollutants and now also solids such as particulates from the exhaust gas flow. The well-known three-way conversion catalyst—in use in North America since 1976 and in Europe since 1986—is now capable of removing considerably more than 95% of the undesired substances from the exhaust gas flow.
building HVAC exhaust) and from natural fluids (e.g., the ocean and surface waters) that received their CO 2 directly from ambient air. ambient air, ocean and surface waters) and accelerate science-based synthesis and assembly of transformative materials with multiple properties designed for this purpose.
Fuel pressure for the BlueTEC direct fuel injection system is 2,000 bar, which makes possible even more power and lower exhaust emissions. To ensure the E250 BlueTEC meets exhaust emission regulations in all 50 US states, the BlueTEC system uses selective catalytic reduction (SCR) with AdBlue injection.
The electric biturbo system comprises a classic exhaust turbocharger (mono- or bi-turbo) working together with a supplemental, electric-powered compressor arranged in series and powered by a separate 48-volt electrical system. Note the position of the single exhaust gas turbocharger and the electrically driven compressor.
Scientists at ETH Zürich and oil and gas company Total have developed a new catalyst that efficiently converts CO 2 and hydrogen directly into methanol. It is possible to convert it into fuels and a wide variety of chemical products, including those that today are mainly based on fossil resources.
liter EA288 diesel engine will power the 2015 Golf, Beetle, Beetle Convertible, Passat, and Jetta, all of which are set to arrive in dealer showrooms in the second half of 2014. With the small circuit, the water warms up very quickly. Unlike many air coolers, this is not cooled by ambient air, but by water. Click to enlarge.
The water-cooled aluminum turbine housing. Water-cooling enables the use of the lightweight material and thus enables a significant weight reduction by nearly 30% while simultaneously providing cost and system benefits. Click to enlarge. Integration of the unit in the three-cylinder, 1.5L
The high-performance, three-way catalytic (TWC) converter is one of the workhorses of emissions reduction for gasoline engines. The TWC reduces NO x to nitrogen and oxygen; oxidizes CO to CO 2 , and oxidizes unburnt hydrocarbons to carbon CO 2 and water. Adapted with permission from Machida et al.
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. The D-EGR demonstrator is a converted 2012 Buick Regal with a 2.0-liter Hydrogen-enriched exhaust is routed to the intake.
The inverter converts DC generated by the cell stack into AC. The hot-water storage tank stores heat exhausted from the power generator as hot-water. A back-up boiler supplies hot-water and heating in case the hot-water storage tank is empty. Click to enlarge.
If you’re driving down the road and you notice a quiet car in front of you, you should know that the car’s exhaust system is doing its job. A well-maintained exhaust system is essential in making your ride safe and sound. If your exhaust system is working correctly, it benefits your fuel consumption and the environment.
The exhaust-turbocharged V6 will come in two versions: 160 kW (218 hp) and 200 kW (272 hp). Integration of the new exhaust aftertreatment unit. Among the elements of interest in the new engine is the close-coupled exhaust gas aftertreatment system. Stages in the development of the exhaust aftertreatment technology.
Some of the features of the high-tech hot-rod are: The exhaust pipes contain 4 catalytic converters (2 on each side) with pre- and post-catalyst oxygen sensors, giving the hot rod full engine OBD diagnostics and compliance. Any scan tool that has CAN protocol can link to this vehicle and retrieve data.). Selectable traction control.
The US Department of Energy’s Advanced Research Projects Agency-Energy (ARPA-E) announced up to $30 million in funding for a new program for technologies that use renewable energy to convert air and water into cost-competitive liquid fuels. ( A potentially greener technology option of using hydrogen from water electrolysis requires 9.5
The advanced design places the exhaust inside the engine’s V-shape while the air intake is positioned on the outside of the V. This segment-exclusive design naturally improves a variety of attributes: Shorter airflow from the exhaust system to the turbocharger sitting between the engine’s cylinder banks improves turbo responsiveness.
Its turbocharger with variable turbine geometry makes optimal use of the exhaust gas energy for early and harmonious torque development. The cylinder head, injection system, turbocharger and catalytic converter were modified accordingly for the CNG engine. The A3 Sportback 30 g-tron 1.5 lb-ft) of torque between 1,400 and 4,000 rpm.
A diathermic oil loop acts as heat carrier between turbine exhaust and the working fluid cyclopentane; the working fluid vaporizes and expands in the turbo expander which, coupled with the power generator, produces electricity. The fluid vapor then condenses, closing the loop. ORegen is applicable on any type of simple-cycle gas turbine.
Terrestrial bioenergy feedstock crops such as switchgrass, canola and corn have lower environmental lifecycle impacts than algae in energy use, greenhouse gas emissions, and water regardless of cultivation location, according to a new lifecycle assessment by researchers at the University of Virginia. 0.4 ± 0.05. 1.8 ± 0.58. 3.3 ± 0.86.
Unlike vehicles without the Start-Stop system, the BlueMotion Technology models have an extra battery data module (for acquiring momentary battery charge status); a reinforced engine starter; a DC/DC converter; and a durable deep-cycle glass mat battery on board. SCR catalytic converter. Battery regeneration.
The water balance of a polymer electrolyte fuel cell significantly affects efficiency and service life. If the diaphragm dries out, this will lead to a gas breakthrough, while surplus water has the undesired effect of allowing the gases to freely enter the catalytic converter. Water separators. Exhaust pathway.
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