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Starting from a energy-based powertrain simulation model validated on experimental data from the PHEV, the researchers conducted a first- and second-law analysis to identify the potential for engine waste heat recovery, considering a variety of driving cycles and assuming the vehicle operating in charge-sustaining (HEV) mode. Skarke et al.
for a project developing a waste heat recovery system using VanDyne’s SuperTurbocharger technology. Downsizing from a 3.2L improved fuel economy 17%, and downsizing from a 4.2L Christopher James Chadwell, Mark Walls (2010) Analysis of a SuperTurbocharged Downsized Engine Using 1-D CFD Simulation. The VanDyne SuperTurbo.
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.
The VEMB system uses a concentric camshaft, blow-down manifold and scavenge manifold to separate the exhaust event into two phases: high-energy blow-down to the turbo without pumping losses, and high-hydrocarbon scavenge to the EGR system. Source: Borgwarner. Click to enlarge.
In a 2010 paper, Roger Stone, Engineering Director, Torotrak noted that conventional turbo- and supercharging technologies are more than capable of delivering the required peak power and torque levels from downsized engines but suffer from a number of. ratio means that they are effectively over-sized and therefore wasteful at higher speeds.
Cobra could enable a 5–10% reduction in CO 2 emissions when implemented in conjunction with engine downsizing and down speeding strategies, and potentially more when used in conjunction with alternative fuels, according to CPT. Unlike a turbocharger, Cobra is not dependent on the exhaust gases flowing to do its work.
Developed for the latest 1-liter downsized gasoline engines. The successful collaboration with Ford resulted in a turbocharger design that meets the particular technical challenges posed by small, downsized engines. Click to enlarge. Earlier post.) The first two engines will generate 74 and 88 kW from a displacement of just one liter.
These projects will receive more than $115 million in funding to develop and demonstrate systems-level fuel efficiency technologies by 2015, including improved aerodynamics, reducing engine idling technologies, waste heat recovery to increase engine efficiency, advanced combustion techniques, and powertrain hybridization. 38,831,115.
The new engine comes with an electronically-controlled waste-gate to optimize flow and improve low-end torque and throttle response. To keep the engine unit as small as possible, the exhaust manifold is integrated within the cylinder head and can therefore be cooled efficiently using the cylinder head water cooling system.
Alcohol-based transportation fuels from a wide range of biomass feedstocks including agricultural, forestry, municipal and industrial waste and specially grown crops and trees can potentially offer a substantial substitute for oil derived fuel. More modest downsizing up to 5 liters could offer a practical solution. In this manner a 3.6
In a paper on the OBS presented at the SAE 2014 World Congress, the researchers suggested that potential applications include downsizing to increase fuel economy by ?10% The OBS system uses wasteexhaust energy to effect the fuel separation and provides a simple and reliable means for managing the separated fuels.
Thermoelectric materials convert temperature differences into electric voltage; a TEG in a vehicle is designed to convert waste heat to power. An automotive TEG is intended to improve fuel economy by power from waste heat to reduce the electric generator load on the engine. down-speeding, downsized engine, etc.), W/cm 2 to 6.0
For the first time, AMG is also utilizing the advantages of gasoline direct injection with spray-guided combustion and piezo-electric injectors: thanks to its higher thermodynamic efficiency, this technology makes more efficient use of fuel and leads to lower exhaust emissions.
The Ricardo-led Advanced Diesel Electric Powertrain (ADEPT) project will apply 48V “intelligent electrification” concepts, mild hybridization and waste heat recovery in a Ford Focus diesel demonstrator. It is capable of operating in exhaust temperatures up to 850 °C, at speeds up to 60,000 rpm and delivering a peak power of 2 kW (@12V).
Renault’s ongoing downsizing strategy is aimed at reducing the cubic capacity of its engines in order to bring down fuel consumption and CO 2 emissions, without detracting from performance. The downsizing process involved shortening the piston stroke by reducing the size of the crank pin and conrod assembly. Select Engines.
The unit can be applied to naturally-aspirated or forced induction engines—though most likely will be applied to downsized turbocharged engines as an additional unit to the existing turbocharger. The exhaust gas can reach temperatures greater than 900 °C, whereas the turbine upper functional limit is 850 °C.
Fuel economy and emissions regulations are driving engine downsizing and down speeding in commercial vehicles, which is resulting in the need for higher braking efficiency to maintain braking effectiveness at lower speeds.
In recent years two methods, namely downsizing and downspeeding, were established on the market to reduce CO 2 emissions while maintaining the driving performance of engines with identical effective power but a larger displacement. bar) is achieved by applying high- or low-pressure exhaust-gas recirculation loops. < IMEP < 22.5
million to a project to develop a high-efficiency engine system that integrates a compact micro-hybrid configuration of a supercharger with an electric waste heat recovery system and employs high rates of recirculated exhaust gases. An engine’s response depends on its ability to take in fresh air and convert it to power.
Another technique introduced in collaboration with BASF is thermoelectric waste heat recovery. Harvested energy from hot exhaust gases is recaptured by this generator which is fitted into the exhaust manifold. Harvested energy from hot exhaust gases is recaptured by this generator which is fitted into the exhaust manifold.
A sole single-stage compressor and single-stage exhaust turbine are used for pressure charging. Unlike previously where two exhaust tailpipes were used, the 2014 regulations mandate the use of a single, central exit tailpipe through which all exhaust gases must pass. Turbocharger. Brake System.
The T-Hybrid (based on a Kia Optima) ( earlier post ) and the ADEPT (based on a Ford Focus) ( earlier post ) both utilize an advanced 48V lead-carbon battery system with bolt-on electrical components that allow for significant engine-downsizing without loss in performance. liter engine the performance of a 1.8
In addition to a range of visual upgrades, the new cee’d GT Line features the debut of Kia’s all-new downsized 1.0-liter liter T-GDi is a downsized, three-cylinder power unit engineered to improve fuel consumption and emissions while offering strong performance and immediate response. liter GDi engine.
Hyundai Motor’s new downsized 1.0 According to the survey, auto makers are focused on rightsizing, as opposed to just downsizing engines, to optimize vehicle performance and fuel economy as global regulations continue to drive more fuel efficiency. T-GDI and 1.4 The 998 cc three-cylinder unit is based on the established Kappa 1.0-liter
A key part of the overall efficiency gain is the downsized 11-liter Volvo engine, featuring advanced fuel injection, cooling, oil and turbo-charging systems, as well as new “wave” pistons and other improvements. This new design added “wave” bumps on the side of the piston bowl, which allows the fuel to burn more cleanly.). for the D13.
By combining High Efficiency Clean Combustion (HECC) and Waste Heat Recovery (WHR), each demonstrating greater than 10% improvement in BTE, together with other technologies, it should be possible to improve BTE by 20% to achieve the original DOE target of 50% peak BTE. Finding 3-1. Recommendation 3-7. HYBRID VEHICLES. Recommendation 4-3.
The Freightliner SuperTruck uses a downsized and downsped 10.7-liter liter engine, a hybrid system, a Waste Heat Recovery (WHR) system, along with a number of other upgrades. The Freightliner SuperTruck features a low-back-pressure, next-generation aftertreatment system that efficiently removes NO x from the exhaust stream.
The Dearman liquid air engine is an innovative heat engine that uses liquid air (or liquid nitrogen) as a “fuel” and emits cold air as exhaust. Ambient or low grade waste heat is used as an energy source with the cryogen providing both the working fluid and heat sink. Earlier post.)
The Spicer PowerBoost system allows manufacturers to select a smaller engine that does not require exhaust after treatment systems that are costly, consume added space, and increase the operating temperature of the powertrain system.
Focused on meeting a growing customer demand for ‘downsized’ engines offering strong power with reduced fuel consumption and CO2 emissions, the new gasoline and diesel powertrains are being progressively introduced across the Opel product range. The engine retains the proven concept of a turbine-integrated exhaust manifold.
The alternative-fuel car evolved to reduce exhaust emissions and other problems derived from burning fossil fuels. To ignore this potential is wasteful and foolish. It is wasteful and destructive to be burning this versatile molecule; we must stop. by Professor Andrew Alfonso Frank. CTO Efficient Drivetrains Inc.
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