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The new Polo GTI, in what Volkswagen is calling “textbook downsizing”, is powered by a new 1.4-liter liter TSI with gasoline direct injection plus turbo- and supercharging. By comparison, its direct predecessor with regard to power—equipped with a 132 kW 1.8-liter The new Volkswagen Polo GTI. Click to enlarge.
A study by engineers from Mahle Powertrain Ltd and BP found strong synergy between spark ignition (SI) engine downsizing and fuel containing low-to-moderate amounts of alcohol, including ethanol and butanol. A Study of Gasoline-Alcohol Blended Fuels in an Advanced Turbocharged DISI Engine. ( Cairns et al. SAE 2009-01-0138).
GDCI engine was significantly better than advanced production spark injection gasoline engines, and comparable to very efficient hybrid vehicle engines at their best efficiency conditions (214 g/kWh). This early work established that gasoline-like fuels with high resistance to autoignition are preferred for PPCI. Combustion stability.
In comparison with the incumbent fixed-ratio positive-displacement supercharger on a 1.0L In comparison with the incumbent fixed-ratio positive-displacement supercharger on a 1.0L V-Charge system with mechanical variable drive outperforms conventional boosting methods on downsizedgasoline engine. Click to enlarge.
A new white paper published by the International Council on Clean Transportation (ICCT), in collaboration with Eaton, Ricardo, JCI, BorgWarner, Honeywell, and the ITB Group, analyzes current turbocharged, downsizedgasoline engine technology developments and trends.
The Tucson ix FCEV can travel more than 400 miles (644 km) on a single fueling, a 76% improvement over its predecessor, and a range equal to a gasoline-powered car. It achieves gasoline equivalent fuel efficiency of more than 70 mpg US (3.36 Comparison of new Tucson ix FCEV (3rd generation) and Tucson FCEV (2nd generation.
The SUV has a full-tank range of 650 kilometers (404 miles)—equal to that of a gasoline-powered car. The new model gets gasoline equivalent fuel efficiency of 31 kilometers per liter (73 mpg US), a 15% improvement over the previous version. Comparison of new Tucson ix FCEV (3rd generation) and Tucson FCEV (2nd generation).
Comparison of ISFC (@42.9 Compression ratio was set at 15:1, and the fuel used was 87 octane gasoline. For a comparison engine, Pinnacle used a 200 cc, conventional two-valve, air-cooled, carbureted model. MJ/kg) (4000 RPM) between 250cc Pinnacle and 200cc poppet valve engine. Source: Pinnacle. Click to enlarge.
Comparison of Emission Standards (g/mi). . Cackette was in effect suggesting that the future tailpipe emissions baseline (LEV III) for light duty passenger vehicles—both diesel and gasoline—was likely to be or to approximate CA SULEV/US Tier 2 Bin 2. Current 50-state baseline Projected future baseline. CA LEV US T2B2 CA SULEV.
downsized, turbocharged) gasoline engine, as operating an engine with higher compression ratios at low load can increase fuel economy compared to operating an engine with fixed compression ratio. In comparison, naturally aspirated engines have a higher compression ratio in the order of 1 to 1.5 Click to enlarge. Kleeberg, H.,
Based on test work already carried out, Ricardo estimates that a fuel economy improvement of up to 30% is possible with no loss of power or performance, using a downsized EBDI engine in place of currently available gasoline powertrain technology. the torque of the gasoline engine and match the torque of the 6.6L
In comparison, they noted, the technology for bio-chemical ethanol production from cellulosic biomass is not sufficiently developed yet. There is no strong advocacy for methanol (unlike ethanol) as a transportation fuel; therefore, they said, it has been displaced by ethanol as oxygenate of choice in gasoline blends. It is a safe fuel.
CO 2 emissions of the C 180 in comparison to its predecessor [t/car]. Over the entire lifecycle of the C 180, the lifecycle analysis yields a primary energy consumption of 521 gigajoules (corresponding to the energy content of around 16,000 liters of gasoline); an environmental input of approx. Source: Mercedes-Benz. Click to enlarge.
mpg US) (99 g/km CO 2 )—more efficient than any previous Golf with a gasoline engine. The new TSI engine also offers the highest specific torque of any large-scale production series gasoline engines: 200 N·m per liter displacement. Golf Comparisons. The turbocharged gasoline engine with its 10.5:1
The Ricardo HyBoost concept is based on a downsized, highly boosted turbocharged direct injection gasoline (TDGI) engine giving improved fuel economy at low cost, linked to a 48V electrical architecture including a belt starter generator (BSG), DC-DC converter and a lithium-ion battery for energy storage.
Comparison of Fuel Consumption, Fun to Drive and System Cost of the different powertrain concepts. Downsizing a gasoline engine (e.g., AVL reasoned that merging turbocharged GDI with a mild hybrid function can result in excellent driveability even with the combination of strong downsizing and downspeeding. Fischer et al.
The resulting higher BMEP levels allow downsizing of the engine at equivalent vehicle performance. The vehicle owner will realize high fuel economy because gasoline, with its greater eating value per volume, is the fuel that is primarily used for most driving modes. E85 DI + gasoline PFI engine in a pickup truck.
From a “well-to-wheel” perspective, high efficient gasoline and diesel engines are nearly as energy efficient as any technology available. The quickest and most cost-effective way to achieve our energy usage goals is through faster adoption of fuel-efficient downsizedgasoline and diesel engines.
In comparison to known single-gear electric drives in hybrid or purely electric vehicles, the two-speed approach offers better starting performance and higher maximum speed, Getrag says. Because of the modular system this topology allows axially parallel and coaxial drive train assemblies.
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. May, Greg T. Drozd, Allen H.
BCG comparison of the CO 2 reduction potential and cost of different technologies. Assuming the China government remains committed to EVs, BCG expects that these vehicles will represent 7% of new vehicle sales in 2020, supported by car buyers’ enthusiasm for the technology and the country’s high gasoline taxes. Source: BCG.
In the process of this development, Daihatsu overhauled all aspects of the engine, the transmission, and the body structure, to maximize energy efficiency and achieve almost a 40% increase in fuel efficiency comparison with the Mira 2WD/CVT without idle reduction functions. and the downsizing of the particles sprayed from the injector.
The ICCT team—John German and Aaron Isenstadt—concluded that diesels have and will retain two significant advantages over gasoline engines: significantly better fuel economy and cargo hauling and towing ability. Diesels offer a promising pathway for compliance and another option in manufacturers’ toolboxes. ”. Click to enlarge.
Comparison of fuel consumption of Omnivore, homogeneous Gasoline Direct Injection (GDI) and Spray-Guided GDI engines. The first testing phase of Lotus Engineering’s Omnivore variable compression ratio, flex-fuel direct injection two-stroke engine ( earlier post ) has been successfully completed on gasoline. Click to enlarge.
Engine downsizing and downspeeding are two strategies that can be applied to gasoline and diesel engines to improve vehicle fuel economy. The also created revised shift schedules for the baseline gear ratios for the turbo for comparison. The team presented its work at the SAE 2012 World Congress.
compression ratio, extent of downsizing, etc.). This information provides the biofuel community a comprehensive and consistent comparison of the feasibility and technical research and development barriers to commercializing promising boosted SI blendstocks. What Fuels Should We Make?
Using a 2007 base vehicle, the committee estimated the potential fuel savings and costs to consumers of available technology combinations for three types of engines over that timeframe: spark-ignition gasoline, compression-ignition (CI) diesel, and hybrid.
When presented with a list of technologies analyzed within a National Academies of Science report ( earlier post ) that might be used to meet fuel-efficiency standards, suppliers picked turbocharging and engine downsizing, along with higher-speed automatic transmissions, as the most critical.
Stoichiometric gasoline direct-injection technology: injects fuel at high pressure directly into the combustion chamber to improve cooling of the air/fuel charge within the cylinder, which allows for higher compression ratios and increased thermodynamic efficiency. This reduces pumping losses at lighter loads in comparison to a larger engine.
Ford’s turbocharged, gasoline direct injection EcoBoost engines are targeted to play a significant near-term role in Ford’s efforts to reduce fuel consumption by enabling downsizing. Near-valve flow structure comparison between high flow port (left) and high tumble port (right). Source: Ford. Click to enlarge. Earlier post.).
3 B-Cycle gasoline engine is the first example of Volkswagen’s “Rightsizing” strategy—an engine development strategy that looks to for the optimal balance of displacement, output, torque and efficiency based on vehicle class and real-world operating conditions, rather than just seeking to downsize. Third, the EA888 2.0TSI Gen.3
The new M-Class lineup offers a range of advanced engines (BlueTEC diesel units and the new generation of BlueDIRECT gasoline engines), a class-leading Cd figure (drag coefficient) of 0.32 BlueDIRECT gasoline unit. The third-generation Mercedes-Benz M-Class on average consumes 25% less fuel than the previous models. Earlier post.)
Whereas future US gasoline demand is expected to be flat for the next 20 years, diesel fuel demand is expected to grow, necessitating changes in refinery operations. One negative consequence of this approach is that the three trucks may never be tested using a common cycle for comparison. Recommendation 3-4. Finding 8-6.
That was its plan for cleaner, downsized 1.4-liter But they’re extremely expensive to produce in comparison to both regular and ethanol-blended gasoline. It then griped about the automakers not having provided fresh ideas. Looking at the actual technology plans, only Toyota presented something entirely new. liter and 2.0-liter
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. Since it can refuel from a standard household outlet and from a gasoline station, it needs no new infrastructure. It is much more than that. Conclusions. slow charge.
The pneumatic hybrid engine, which follows the downsizing and supercharging paradigm, offers a fuel-saving potential that is almost equal to that of hybrid electric powertrains while inducing much lower additional mass and cost penalties, according to the ETH Zürich researchers. The compressed air supply also allows extreme downsizing.
As a point of comparison, the US EPA’s proposed national CO 2 emissions standards for light-duty vehicles under section 202 (a) of the Clean Air Act would require these vehicles to meet an estimated combined average emissions level of 250 grams/mile of CO 2 —155.26 g/km—in model year 2016. Frost & Sullivan analyst Hariher Balasubramanian.
Environmental Protection Agency (EPA), which stewards the RFS, had repeatedly downsized the targets by nearly 25 percent. A more recent study found that, since the program coaxed farmers into using more land for corn cultivation, RFS biofuel wasn’t actually any less carbon-intensive than gasoline. By the mid-2010s, the U.S.
The FEV data are combined with supplemental data to generate CO 2 cost curves for ten EU vehicle classes (diesel B, C, D, E, SUV, and LCV classes and gasoline B, C, D, and E classes). Switching sooner from conventional gasoline and diesel vehicles to plug-in or battery electric vehicles would reduce compliance costs. Source: The ICCT.
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