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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.
Toyota Motor Corporation has developed a new series of fuel-efficient gasoline engines that achieve improved thermal efficiency. liter gasoline engine in which Toyota is employing the Atkinson cycle—normally used in dedicated hybrid engines—and a compression ratio of 13.5:1. Click to enlarge. One of the engines is a 1.3-liter
The ORNL team conducted engine experiments with both 91 RON E10 gasoline and liquified petroleum gas (LPG). 1) with cooled exhaust gas recirculation (EGR) and high compression ratio (13.3:1 1 for LPG only) improved engine efficiency by up to 30% compared with a production turbocharged gasoline direct injection spark ignition engine.
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! It also comes with a gasoline particulate filter. With a pressure of 350 bar (high for a gasoline engine), the fuel mixture is injected directly into the combustion chambers.
Volkswagen has developed and deployed a gasoline engine that offers diesel-like fuel economy but is significantly cheaper to buy. Compared with other gasoline engines, the intake valves of the 1.5 Chargers of this kind combined with gasoline engines are usually found only in high-performance cars. l/100 km (49 mpg US).
A new study by an international team led by researchers from the Paul Scherrer Institute (PSI) in Switzerland has found that modern diesel passenger cars equipped with diesel particulate filters (DPFs) emit fewer carbonaceous particulates than gasoline-powered vehicles. The open-access study is published in the journal Scientific Reports.
Based on a three-year study of toxic and environmentally relevant pollutants from gasoline direct injection (GDI) engines, Swiss researchers have concluded that some GDI engines emit just as many soot particles as unfiltered diesel cars did in the past. Further, the GDI particles carry numerous carcinogenic substances. —Norbert Heeb.
(Left) Thermal efficiency and ( right ) soot from different gasoline-butanol blends at different EGR rates. A study by a team at Tianjin University found that the addition of n-butanol to gasoline for use in a compression ignition engine (CI) under Low Temperature Combustion (LTC) conditions has a significant effect on soot reduction.
with technologies such as direct fuel injection, variable valve timing, exhaust-driven turbochargers, brake energy regeneration and Auto Start Stop function—about 60% of the generated energy is still lost, half of it being exhaust heat, with the remaining half as heat absorbed by the engine cooling system. Click to enlarge.
liter diesel, prominently showing the closely attached exhaust aftertreatment system. Volkswagen also has a modular gasoline engine toolkit, the MOB (Modularen Ottomotor Baukasten), which includes the new EA211 series. The cylinder head intake and exhaust valves are arranged one behind the other. The EA288 2.0-liter
A study by a team from UC Riverside has assessed the potential of increasing ethanol content in California reformulated gasoline (CaRFG) by investigating the exhaust emissions from a fleet of 20 Tier 3 light-duty vehicles. A baseline CaRFG E10 (10% ethanol by volume) fuel was splash-blended with denatured ethanol to create an E15 fuel.
Researchers at the University of Wisconsin, led by Dr. Rolf Reitz, are investigating a blended dual-fuel (gasoline and diesel) concept to extend the operating range of partially premixed charge compression ignition combustion by using the varying fuel reactivity of the charge blend, which is determined in real time. Source: Rolf Reitz.
Comparison of brake thermal efficiency and specific fuel consumption at rated power (ICOMIA Mode 5), hydrogen vs. gasoline engines. This is due to raw, externally premixed fresh charge comprising air, fuel and lube oil being short-circuited into the exhaust during the scavenging process. Oh and Plante. Click to enlarge.
TSCi combustion minimizes heat loss to the cylinder walls and in the exhaust. The company currently is optimizing the system for use in modern high-compression diesel architecture engines, near-term running on gasoline while longer-term utilizing advanced low-carbon fuels. As a comparison, the 2010 Prius delivers 51 mpg US (4.6
We have therefore developed a hydrogen combustion engine that aims to match the power and torque of current high-performance gasoline engines as a concept study. liter eight-cylinder gasoline engine—or rather, its digital data set, since we conducted the entire study virtually using engine performance simulations.
gasoline and Diesel fuel), alcohol-based liquid fuels (e.g., There are two basic exhaust emissions and fuel economy tests described in J1711. Until now, the fuel economy claims for plug-in hybrids were not calculated according to similar procedures, making car-to-car comparisons virtually impossible. Earlier post.)
A new study by a team from the University of Edinburgh and independent engineering company INNAS BV has found that, when factoring in the additional weight and non-exhaust PM factors, total PM 10 emissions from electric vehicles (EVs) are equal to those of modern internal combustion engine vehicles (ICEVs). mg/vkm for gasoline cars and 2.4
Diesel engines emit up to 15% less CO 2 than comparable gasoline engines; the CO 2 benefits are greater for larger vehicles. The EA288 evo units not only comply with the current limits of the EU6d-temp exhaust emission standard, but are also already prepared for the future EU6d standard (which applies to new models from September 2019).
. … Chemical analysis of the emissions shows that SOA is mainly produced via photo-oxidation of aromatic VOCs, present in gasoline, from the exhaust. Finally, we present the first online measurements of aged exhaust showing that SOA formation also produces reactive oxygen species (ROS) with potentially detrimental effects on our lungs.
A research team from Empa (Swiss Federal Laboratories for Materials Science and Technology) and the University of Applied Sciences Bern, Laboratory for Exhaust Emission Control, reports that ethanol blending appeared to reduce genotoxic emissions from a flex-fuel Euro-5 gasoline direct injection (GDI) vehicle (a Volvo V60 with a 1.6
In the Tianjin study, the team explored the impact of exhaust gas recirculation (EGR) rates from 0% to 15% and compression ratios (CRs) of 8, 9, and 10 on the combustion characteristics and emission performance of 2-methylfuran (MF) and gasoline. higher indicated thermal efficiency when compared to gasoline with a CR of 10.
A team from Carnegie Mellon University (CMU) has characterized the intermediate volatility organic compound (IVOC) emissions from on-road gasoline vehicles (LDGVs) and small off-road gasoline engines (SOREs). All LDGVs were tested using commercial summertime California gasoline and the cold-start united cycle. Gordon et al.
Neste, currently largest producer of renewable drop-in fuels (primarily diesel) with its NEXBTL platform ( earlier post ), has filed a patent ( US20150144087 ) on a gasoline composition (and the method for making it) comprising up to 20 vol% (preferably from about 10-15 vol.%), of paraffinic bio-hydrocarbons originating from the NEXBTL process.
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 global market for sensors used in internal combustion engines (ICE) is on the road of steady growth for the next few years, propelled by increasing utilization in engine management and exhaust aftertreatment, according to a new report from IHS Technology. IHS projects that sensor shipments for ICEs will top 1.34 billion in 2013.
Controlled Power Technologies (CPT) and AVL List GmbH (AVL) have developed a gasoline engine that retains all the traditional cost, weight, NVH refinement and emission benefits as well as the fun-to-drive factor, while reducing CO 2 levels to that of an equivalent diesel powertrain. TFSI (200PS) gasoline engine.
In 1975, General Ernesto Geisel, then-president of Brazil, ordered the country’s gasoline supply mixed with 10% ethanol. The level was raised to 25% over the next five years, which was intended to maintain a constant Brazilian gasoline supply for an ever-increasing demand. These were arguably the first flex-fuel vehicles.
The new six-cylinder in-line gasoline engine M 256 features a 48 V electrical system. The M 256 is the first member of a new family of premium gasoline engines that have for the first time been systematically designed for electrification from the outset. Mercedes-Benz is investing a total of around €3 billion (US$3.3 Click to enlarge.
The direct comparison of CO 2 or FC standards’ stringencies from different regions not only depends on the different driving cycles applied but also on the technical characteristics of the regional vehicle fleets. Gasoline vehicles emit strongest under the WLTC schedule. —Kühlwein et al. Source: ICCT. Click to enlarge.
liter, direct and port fueled injection, inline 4-cylinder gasoline engine commonly used in the Camry line of vehicles. The “Dynamic Force Engine” achieves one of the world’s best thermal efficiencies of 40% in gasoline powered vehicles according to Toyota. The Toyota 2.5L
Other research has shown that carbonyls directly influence physiological response to diesel exhaust particles and can also contribute to secondary organic aerosol formation. In the Tianjin study, they team fueled a four-cylinder light-duty diesel engine fueled with CFT and DF, identifying 13 individual carbonyl compounds in the exhaust.
Across its life cycle, a typical electric car in Europe produces fewer greenhouse gases and air pollutants compared with its gasoline or diesel equivalent, according to the report. For local air quality, electric vehicles also offer clear benefits, mainly due to zero exhaust emissions at street level.
Comparison of ISFC (@42.9 The test engine for the paper was a 250cc single-cylinder unit with dual-camshaft-actuated reciprocating sleeve valves for induction and exhaust. Compression ratio was set at 15:1, and the fuel used was 87 octane gasoline. MJ/kg) (4000 RPM) between 250cc Pinnacle and 200cc poppet valve engine.
Comparison of baseline and dDSF CO 2 and NO x on HD FTP cycle and LLC. Like DSF for gasoline engines, dDSF uses individual cylinder deactivation control strategies to meet torque demand at optimal fuel and aftertreatment efficiency. Cylinder deactivation also reduces excess engine airflow, increasing exhaust temperatures.
While achieving LTC with diesel fuel over a wide operating range has been shown to be difficult for several reasons, gasoline, with its high volatility and low chemical reactivity, offers a more attractive fuel option for LTC. —Dempsey et al. —Dempsey et al.
To reduce the variability in fuel use and exhaust emission rates related to variations in engine oil, engine oil was changed for each vehicle prior to the measurement using the first fuel. Each vehicle was measured on neat gasoline (E0); 10% ethanol by volume (E10) “regular” (E10R) and “premium” (E10P); and 27% ethanol by volume (E27).
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.
The next generation of Ford’s EcoBoost turbocharged, direct-injection gasoline engines will introduce cooled EGR (exhaust gas recirculation), enabling higher compression ratios, according to Ford executives speaking at the SAE 2010 World Congress in Detroit.
Future blending options for ethanol in gasoline include continuation of low-level blends (E0-E15), greater use of E85 in flexible fuel vehicles (FFVs), or new use of midlevel blends (E20-E40) in FFVs or in new vehicles designed with midlevel blend-capability. Engine-out exhaust contains typically 1?3% 99% of these organic compounds.23.
Not only is it more powerful and contains up to 30% better efficiency than traditional gasoline, etc. During his presentation at the TDI Efficiency Rally, UMTRI researcher Bruce Belzowski first presented a summary of his analysis of the total cost of ownership of diesels with a comparison to that of their gas vehicle counterparts.
At the North American International Auto Show (NAIAS) in Detroit, tier one supplier KSPG is showcasing systems for cars, light and medium-duty commercial vehicles and components for efficient fuel and emission reduction for both gasoline and diesel vehicles. One such measure is cooled exhaust gas recirculation. Click to enlarge.
During each of up to 3,000 revolutions per minute in the research engine, a minute amount of fuel shoots into the glass cylinder, is compressed and ignited, and the exhaust gas then expelled. Fuel specifications are not publicly available yet, nor are emissions results and comparisons. Generation: Audi e-fuels (in German).
The MAHLE Modular Hybrid Powertrain (MMHP) is a fully integrated, plug-in hybrid drive that incorporates a highly efficient 2- or 3-cylinder, turbocharged gasoline engine featuring the latest technologies from MAHLE. In comparison with established hybrid technologies it is more cost-efficient, more compact, and lighter, MAHLE says.
million from the Department of Energy’s ARPA-E program ( earlier post ) to complete its prototype development of a new gasoline-fueled wave disc engine and electricity generator that promises to be five times more efficient than traditional auto engines in electricity production, 20% lighter, and 30% cheaper to manufacture. Norbert Müller.
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