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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. Cairns et al.
compacts under 1,400 kg in weight—a stoichiometric 3-cylinder turbocharged gasoline direct injection (GDI) engine offers an optimal combination of cost, lower emissions and reductions in fuel consumption, according to an analysis by Delphi Powertrain presented at the recent SAE 2010 World Congress. Earlier post.). Source: Kirwan et al.
Their study is publishedin the ACS journal Environmental Science & Technology. The researchers assessed the gaseous, particulate, and genotoxic pollutants from two current technology gasoline direct injection vehicles when tested in their original configuration and with a catalyzed gasoline particulate filter (GPF).
In part-load operation, the indirect injection supplements direct gasoline injection to improve fuel economy and to reduce the output of particulates from the engine. GDI technology provides fuel efficiency benefits from charge air cooling, more facile turbocharging, and the downsizing that these permit. Earlier post.). Earlier post.)
A team from Brunel University, MAHLE Powertrain and University College London studied the combined effects of different inlet valve operating strategies on combustion, performance and emissions with different ethanol and 1-butanol blends with gasoline in a single-cylinder spark-ignition research engine equipped with a fully variable valvetrain.
ExxonMobil, Corning and Toyota have collaborated to develop an Onboard Separation System (OBS) to optimize gasoline engine efficiency and performance. 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% Background.
A study by a team from Ford Motor Company and AVL has concluded that a mid-level ethanol blend—greater than E20 but less than E40—appears to be attractive as a long-term future fuel for the US for use in engines optimized for the higher octane blend. These include: Lower energy content than that of gasoline. Earlier post.)
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.
During its recent Innovation Day presentations ( earlier post ), PSA Peugeot Citroën announced that it will commercialize high-efficiency gasoline engines featuring dedicated exhaust gas recirculation (D-EGR), derived from a collaborative program with SwRI in the US. Source: SwRI, DEER 2012. Click to enlarge.
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.
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. The OSU EcoCAR prototype vehicle features an extended-range electric architecture with a downsized 1.8L —Skarke et al.
Researchers at Tianjin University in China report that combing split injection to the Miller cycle with boost pressure can effectively decrease the knock tendency and increase the engine torque in a downsized spark-ignition engine. The researchers used a Ricardo E6 4-stroke SI engine in the study, with a swept volume of 0.5
Researchers at Tsinghua University in China are studying the effects of Dual-Fuel Spark Ignition (DFSI) combustion fueled with different alcohols and gasoline. Alternatively, in the second study, gasoline–alcohol DFSI is based on PFI of gasoline and DI of alcohols.). —Liu et al.
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.
liter ELC-Hybrid to downsized 1.4L VTES + SpeedStart. CPT and AVL’s most recent work assesses the potential of a VTES equipped downsized ELC-Hybrid vehicle in combination with the CPT SpeedStart Integrated Starter Generator ( earlier post ) and the UltraBattery. Click to enlarge. common rail TDI engine.
The technical and macro-economic study, commissioned by the European Climate Foundation, focuses on light-duty vehicles. The Phase I study assesses two scenarios against a reference case in which vehicle efficiency is frozen at the current level. The project is taking a phased approach.
However, unlike conventional gasoline engines, gasoline direct injection engines produce particulate matter, as do diesels, and emission controls will become an issue the technology must address as standards for particle mass tighten, and also as standards for particle numbers emerge. gasoline blend. Earlier post.)
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. —Saliba et al.
The resulting higher BMEP levels allow downsizing of the engine at equivalent vehicle performance. EBS has a collaborative R&D agreement with Ford, and participated in the study reported at the World Congress. In the study, Ford applied the E85 boosting approach to two engines: an early prototype 3.5-liter Earlier post.)
Developed for the latest 1-liter downsizedgasoline engines. Continental will be supplying Ford with turbochargers for the carmaker’s new three-cylinder direct injection gasoline engine platform. Continental began developing turbochargers for gasoline engines in 2006. Click to enlarge. Earlier post.)
The study by Aaron Brooker, Matthew Thorton and John Rugh aimed to identify possible pathways to cost-effective vehicle electrification by evaluating a variety of scenarios and technology improvements. The gasoline, on the other hand, is a large expense, especially for the conventional vehicle. Source: Brooker et al. Click to enlarge.
Operating range of 2-stroke CAI fueled with gasoline, E10 and E85. Accordingly, the processes have been extensively researched over the last decade and adopted on prototype gasoline engines (e.g., Zhang et al. 2013a) Click to enlarge. Controlled autoignition (e.g., Controlled autoignition (e.g., GM’s ongoing work, earlier post ).
A team at the Clean Combustion Research Center (CCRC), King Abdullah University of Science and Technology (KAUST), Saudi Arabia, is proposing the use of terpineol as an octane booster for gasoline in a spark ignited (SI) engine. They also studied fuel ignition properties in an ignition quality tester (IQT). —Vallinayagam et al.
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. Source: ICCT. Click to enlarge.
This combined combined aggressive 50% downsizing of the engine with an electric supercharger for transient low-speed performance and a 12+X volt micro-hybrid stop-start and energy recuperation systems. In 2011, the HyBoost team reported that the HyBoost demonstrator was achieving comparable performance to the conventional 2.0L
Achates Power will work with Delphi Automotive and Argonne National Laboratory on its ARPA-E-funded project to develop an innovative opposed-piston, gasoline compression ignition (OPGCI) engine. liter opposed-piston, gasoline compression ignition engine applicable to large passenger vehicles, pick-up trucks, SUVs and minivans.
A downsizedgasoline engine is one of the proven technologies that improves engine thermal efficiency and thus reduces automotive fleet CO 2 emissions, by as much as 25%. Ethanol, a widely used renewable gasoline alternative, has a much higher octane rating than conventional gasoline fuel. and 85 vol.%
The study concludes that China and Europe, not the United States, will be the largest markets for EVs in 2020, driven by strong government support. However, China is a major wildcard. A combination of peak oil with incentives or lower battery costs could increase EV penetration by 6%. Source: BCG. Click to enlarge. Source: BCG. The consumer.
At the recent 2013 SAE World Congress, engineers from Bosch and AVL presented papers on progress in the ACCESS project, describing the design, combustion development and controls development for a resulting 4-cylinder gasoline turbocharged direct injection (GTDI) engine with part-load HCCI capability. Combustion studies. Wheeler, J.,
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. The study was sponsored by the National Highway Traffic Safety Administration.
The report, Assessment of Technologies for Improving Light Duty Vehicle Fuel Economy estimates the potential fuel savings and costs to consumers of available technology combinations for three types of engines: spark-ignition gasoline, compression-ignition diesel, and hybrid. Compression-ignition technologies.
The new venture, which will be called “Rotrak”, will add Torotrak’s variable speed traction drive to Rotrex’ supercharging technology to address the automotive industry’s need for affordable, effective engine downsizing technologies. As part of the agreement, Torotrak will acquire a 15% stake in Rotrex and a seat on the company’s board.
Relative changes in vehicle energy efficiency (VEE) (km/MJ) on ethanol/gasoline blends over those on gasoline for different blending levels. Several recent highly cited LCAs that have incorporated vehicle efficiency differences between gasoline and ethanol/gasoline blends could potentially be misleading. Click to enlarge.
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.
million) in 22 studies and projects to develop new technology that will speed up the reduction of CO 2 emissions from road vehicles. The investment will be made in sixteen proof of concept studies, which will last up to one year, and six longer-running full research and development projects. GKN Eco-Trailer. EDS TurboClaw.
In 2014, any weight increase in new cars will be studied. Downsizing, gasoline direct injection (GDI), and start-stop will be the key technologies helping original equipment manufacturers (OEMs) achieve emission targets by 2015. Smaller charges between €5 and €25 for excesses of 1 – 3 g/km.
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. They determined that only 3.9
Knock and fuel octane rating are becoming increasingly important due to many powertrain design trends including downsizing, downspeeding, cylinder deactivation, and hybridization. … Alcohol and gasoline-alcohol blends also offer efficiency benefits independent of their octane value. In their study, Leone et al. Leone et al.
Jaguar says that the high-performance hybrid will stay true to the initial concept design study—albeit without the micro-turbines—that made its debut at the 2010 Paris Motor Show, while fulfilling requirements that allow it to be homologated for road use.
Today’s CNG vehicles are generally bivalent, running on gasoline and CNG with engines designed for gasoline direct injection. However, because methane behaves differently from gasoline when injected directly, it is important to optimize the combustion process for methane.
As part of the study, the team also demonstrated switching durability of the dual piston mechanism of more than one million cycles. For this reason, a VCR mechanism has been focused to achieve further fuel economy and power performance in automobiles employing downsizing technology and/or new combustion technology. Kadota et al.
The upside of gasoline direct injection (GDI) engines is widely seen as being improved fuel economy coupled with an increase in specific power (especially with turbocharging), enabling significant downsizing. A new study by a team at the University of Toronto has made a preliminary assessment of the climate trade-off (i.e.,
will also need to be made with the further development and distribution of sustainable fuels which can be alternatives to traditional diesel and gasoline. re-launch the inter-service task force to study and follow up the main cases of automotive plant closures or significant downsizing. Sizeable efforts.
Thrust I has concentrated on improving near-term SI engine efficiency and assessing desirable properties for bio-derived or bio-based components (blendstocks) to be blended with petroleum-derived gasoline. Two new studies were performed to further investigate the relationship between HoV and octane sensitivity. Click to enlarge.
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