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Downsizing arrived in a big way at GM in 1977. In light of fuel prices, foreign competition that was smaller and more efficient, and a consumer base that was trending away from land yachts, GM downsized its full-size cars. Note: The teal Eldorado is a 1976, the light blue is a 1977.)
At the US Department of Energy’s (DOE’s) Annual Merit Review meeting in Washington, DC last week, Michael Ruth from Cummins noted that the DOE program target for the project is a fuel economy (CAFE) target of 26 mpg (9.05 Earlier post.). l/100 km), and as such would not meet the GHG requirement of 28 mpg (8.4 Exhaust system configuration.
variant but with fuel economy of a strong hybrid. HyBoost achieves this by combining aggressive 50% downsizing of the engine with an electric supercharger for transient low-speed performance, and a micro-hybrid stop-start and energy recuperation systems, Boggs said. Downsizing the 2.0-liter Click to enlarge. Click to enlarge.
Changes in the attributes (clockwise from upper left, weight, power, fuel economy and torque) of the Honda Accord over time as an example of fleet trends in the US. In contrast, fuel economy actually increased by 15% during that period. Volvo is the most efficient manufacturer of light duty trucks, followed by Subaru, GM and Honda.
The results represent a light-load indicated efficiency improvement of 15-30% (up to 40.9%). Compression ratio was set at 15:1, and the fuel used was 87 octane gasoline. air-fuel equivalence ratio, lambda) are fixed, and spark timing is adjusted until either maximum brake torque (MBT) is reached or incipient knock criteria are met.
The Advanced Elastoval II piston enters series production later this year in a new European passenger car, where it contributes to gains in fuel economy and reductions in CO 2. Specific power outputs in engines are likely to increase from current levels of around 95 kW/L to 130 kW/L to coming years. generation pistons.
The A dvanced C ombustion C oncepts— E nabling S ystems and S olutions (ACCESS) is developing advanced combustion control concepts along with with an enabling system, subsystem and component level solutions for the management of multi-mode/multi-fuel combustion events. HCCI range extension with boosting. Source: Bosch. Click to enlarge.
downsized diesel engines with improved fuel economy and CO 2 emissions. Federal-Mogul's 2D ultrasonic inspection technique enables high performance pistons for diesel downsizing. pistons can retain their leading position in diesel engines for light vehicles for some time to. Click to enlarge. its strength.
Light duty vehicle fleet by type and average fuel efficiency. ExxonMobil expects that by 2040, hybrids and other advanced vehicles will account for nearly 50 percent of light duty vehicles on the road, compared to only about 1 percent today. By 2040, heavy duty fuel demand will be up about 60 percent versus 2010.
Federal-Mogul Corporation has developed a cost-effective new material for valve seat inserts that helps manufacturers meet the durability demands of engine downsizing and alternative or high-octane blended fuels.
Especially with increased production volume of renewable fuels and optimized powertrain solutions for flexible fuel vehicles, there is a chance for combustion engines to not only remain in the market but also be sustainable for future vehicle. The intake manifold was modified for high pressure EGR feed and port fuel injection (PFI).
reduction in fuel consumption achieved with XL Hybrids’ aftermarket hybrid electric powertrain ( earlier post ) on a light-duty cargo van on the UDDS cycle (urban conditions). The tests were conducted on ESWA’s light-duty chassis dynamometer test cell featuring a twin-roll Clayton dynamometer. engine and 6-speed transmission.
The 2012 APEAL Study finds that 27% of new-vehicle buyers who replaced a vehicle downsized—i.e., The downsizing trend also has an impact on owner satisfaction with the fuel economy of their new vehicle. purchased a new vehicle in a smaller segment than the vehicle they replaced. Power and Associates.
Highly turbocharged alcohol-fueled direct-injection spark-ignition (DISI) engines operated at a high compression ratio could be as or more efficient than diesel engines while also providing advantages of lower vehicle cost, lower emissions and higher power, according to a recent modeling study by Leslie Bromberg and Daniel Cohn at MIT.
The engine should yield fuel efficiency gains of more than 50% compared to a downsized, turbo-charged gasoline direct injection engine, while reducing the overall cost of the powertrain system, said Fabien Redon, Vice President, Technology Development at Achates Power. Earlier post.) Chris Atkinson.
The analysis used the Ohio State University EcoCAR, a student prototype PHEV, as the basis for the preliminary fuel economy evaluation. Internal combustion engines have been significantly improving in the past decade, after the adoption of technologies such as Gasoline Direct Injection, mild electrification, downsizing and turbocharging.
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.
The US Environmental Protection Agency (EPA) and the US Department of Transportation (DOT) formally unveiled their joint proposal to set stronger fuel economy and greenhouse gas pollution standards for Model Year 2017-2025 passenger cars and light trucks. L/100km), if the vehicles were to meet this CO 2 level all through fuel economy.
This trend of increasing demand for higher octane gasoline is likely driven by changes in fuel requirements for light-duty vehicles (LDV) in response to increasing fuel economy standards, which will have widespread implications for future gasoline markets, according to EIA analysts. of new gasoline-fueled LDV sales.
The dark grey areas are silicon particles; the light grey areas aluminium. Federal-Mogul Corporation has developed an innovative aluminum piston design that can reliably withstand the mechanical and thermal loads produced by heavily boosted engines, thereby enhancing diesel engine performance and supporting diesel downsizing.
According to its estimates, adopting the full combination of improved technologies in medium and large cars and pickup trucks with spark-ignition engines could reduce fuel consumption by 29% at an additional cost of $2,200 to the consumer. Source: NRC. Click to enlarge.
In October 2015, the US Department of Energy’s (DOE) launched a broad, joint effort to co-optimize the development of efficient engines and low greenhouse-gas fuels for on-road vehicles with the goal of reducing petroleum consumption by 30% by 2030 beyond what is already targeted. Earlier post.)
liters of fuel per 100 kilometers (23 mpg US mpg). liters less fuel per 100 kilometers (23%). liters less fuel per 100 kilometers (23%). With an average fuel consumption of 10.2 liters per 100 km (23 mpg US), the Audi S8 is significantly more fuel efficient than its competitors, according to Audi.
Yesterday, the US Environmental Protection Agency (EPA) and the National High Traffic Safety Administration (NHTSA) jointly established increasingly stringent greenhouse gas emission standards under the Clean Air Act for 2012 through 2016 model-year vehicles and fuel economy standards under the Corporate Average Fuel Economy program, respectively.
In a new report ( Transportation Forecast: Global Fuel Consumption ), Navigant Research forecasts total road transportation energy consumption will grow from 81.1 Approximately 84% of that will be provided by conventional fuels. Annual road transportation sector energy consumption by fuel type, world markets: 2015-2035.
Toyota Motor continues to lay the foundation for the introduction of its production fuel cell hybrid vehicle in 2015; the company began work on fuel cell technology in 1992. The output power is more than 100kW, despite significant unit downsizing. Toyota’s view of hydrogen.
A report published by Cambridge Econometrics and Ricardo-AEA concludes that overall, the cost of technologies required to meet proposed European 2020 CO 2 regulations for vehicles (95 g/km for cars and 147 g/km for vans) will be more than offset by the resultant fuel savings. The project is taking a phased approach.
A team of engineers from GM Powertrain, Ford and FCA have published a detailed review of how to estimate the engine efficiency benefits of higher octane fuel—e.g., fuel with higher ethanol content—for part- and full-load operation for different engine types and fuel assumptions. —Leone et al.
Fuel mass flow comparison shows Pinnacle engine ahead at just about all points in the map. FEV performed engine mappings in a dynamometer test cell to evaluate the fuel economy of Pinnacle’s TP90 scooter engine compared to a benchmark engine (N15) from Pinnacle’s Asian OEM partner. Click to enlarge. Improvement during CDC: 28.7%.
The company’s engineers have a prototype system running in a B-segment donor vehicle on a dynamometer and are calibrating the control strategy to prove its driveability, performance, CO 2 and fuel economy benefits. Both solutions involve part load losses which compromise some of the fuel consumption savings made by downsizing.
Peugeot continues to improve engine efficiency with a downsizing strategy for its gasoline and HDi FAP diesel engines. Peugeot will also offer a 100% electric light commercial vehicles (LCV) based on the Partner Origin, with a load capacity of 3 m 3 , from the spring of 2010. Included in its product strategy are: Cleaner engines.
Reducing engine-out emissions cuts tailpipe emissions in the crucial period before catalyst light-off and reduces the need for costly aftertreatment systems. The industry has long recognized that increasing injection pressure to 500+ bar could substantially cut engine-out particulates while improving CO2 emissions and fuel economy.
Major automotive suppliers see national fuel economy standards as important for long-term planning and investment and don’t want to see them altered by US policymakers, according to a first-of-its-kind industry survey commissioned by CALSTART and conducted by Ricardo Energy & Environment.
Cheng of the Sloan Automotive Laboratory assessing the prospects for methanol as an alternative transportation fuel in the US concludes that methanol is a safe and viable transportation fuel, although it not as good as ethanol in terms of energy density and ease of handling. It is a safe fuel.
Test results from that supplier have demonstrated potential fuel-saving, engine down-sizing and/or down-speeding opportunities without adversely affecting performance and drivability. Simulated performance of downsized 2.0L V6 engine as a baseline, Fallbrook has also simulated the use of a downsized 2.0L Click to enlarge.
Results of this study showed that the pre-chamber jet ignition combustion system roughly matches HCCI fuel economy across both NEDC and FTP drive cycles, with a 13% improvement in fuel economy recorded over the baseline stoichiometric (λ=1) spark ignition combustion system. Click to enlarge.
In a presentation at the SAE 2014 High Efficiency IC Engine Symposium and then in a paper given at SAE 2014 World Congress, Mark Sellnau, Engineering Manager, Delphi Advanced Powertrain, reported that Brake Specific Fuel Consumption for the 1.8L Vehicle fuel efficiency on FTP. +35% Background. Earlier post.) Earlier post.)
Even in the BRICs, ICE downsizing has become a big deal. The survey found that most companies are hedging their bets and spreading funding across a wide range of areas, with ICE downsizing and plug-in hybrids expected to receive the greatest investment over the next 5 years. —“14 th Annual Global Automotive Executive Survey”.
Various combinations of commercially available technologies could greatly reduce fuel consumption in passenger cars, sport-utility vehicles, minivans, and other light-duty vehicles over the next 15 years without compromising vehicle performance or safety, according to a new report by the National Research Council.
Automakers are turning to downsized turbocharged engines to satisfy more stringent global fuel economy and emission regulations and customer demand for better-performing vehicles. In addition to improving fuel efficiency, downsized turbocharged engines also reduce harmful exhaust emissions.
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. Meeting the 2025 standard will require an average improvement in fuel economy of about 4.1% Background.
The next-generation of EcoBoost will seek to improve performance and fuel consumption through the use of technologies such as advanced boosting and cooled EGR. Wide-spread EcoBoost application will enable downsizing—moving from eight-cylinder engines to six, and from six to four, while maintaining or even improving performance.
Annual stop-start light duty vehicle sales by region, world markets: 2013-2022. By 2022, total global annual sales for light duty stop-start vehicles (SSVs) will exceed 55 million, accounting for 54.3% Batteries Fuel Efficiency SSVs Vehicle Systems' Source: Navigant. Click to enlarge. By then, 82.8%
New fleet efficiency horizon in terms of energy intensity and fuel consumption. Tripling US new light-duty vehicle fleet fuel efficiency by 2035 through evolutionary change—e.g., Adjusted on-road fuel economy correspondingly would be 41 mpg (5.74 —A Fuel Efficiency Horizon for US Automobiles.
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