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The Volvo Car Corporation is introducing a new, downsized engine range consisting solely of four-cylinder gasoline and diesel engines. It covers the range from high-power and -torque variants to fuel-efficient derivatives. The new VEA engines reduce the number of unique parts by 60%. It’s time to stop counting cylinders.
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. Earlier post.). —Wheeler et al.
By separating the two parts of the exhaust event by phasing the exhaust valves via the concentric camshaft, VEMB allows the turbo to capture the blow-down energy while avoiding pumping losses through the turbocharger. to 2 ratio points and maintain the same knock limit for an additional 3-4% improvement in fueleconomy.
Changes in the attributes (clockwise from upper left, weight, power, fueleconomy and torque) of the Honda Accord over time as an example of fleet trends in the US. In contrast, fueleconomy actually increased by 15% during that period. Knittel, 2009. Click to enlarge.
The engine is built in a new factory in Silao, Mexico that is part of Volkswagen’s ongoing $5-billion investment in the North American market. Volkswagen predicts fuel highway fueleconomy will improve by up to 17% with the downsized engine. The Beetle and Beetle Convertible 2.5-liter s hydraulic setup.
Utilizing technologies such as turbocharging, direct injection, twin independent variable camshaft timing (Ti-VCT) and six-speed transmissions, the upgraded powertrain portfolio will deliver more than 20% in fueleconomy improvement to Ford’s passenger vehicle fleet in China by 2015 while reducing tailpipe carbon dioxide emissions by 20%.
Results of this study showed that the pre-chamber jet ignition combustion system roughly matches HCCI fueleconomy across both NEDC and FTP drive cycles, with a 13% improvement in fueleconomy recorded over the baseline stoichiometric (λ=1) spark ignition combustion system. Click to enlarge. Background.
The four-door fastback is powered by a hybrid electric powertrain that is expected to deliver 550 hp (410 kW) with fuel consumption of 5.5 The powertrain incorporates a new aluminum-based downsized twin-turbocharged 3.0-liter liter V6 that is part of a new engine family which will be introduced within the next two years.
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. The researchers found that the combination of technologies allowed improvements in fueleconomy over the engine drive cycle.
Use of a variable compression ratio (VCR) could be one technology approach to reducing fuel consumption in highly boosted (e.g., downsized, turbocharged) gasoline engine, as operating an engine with higher compression ratios at low load can increase fueleconomy compared to operating an engine with fixed compression ratio.
As part of its strategy of developing solutions to reduce CO 2 emissions, Valeo has acquired the Variable Torque Enhancement System (VTES) ( earlier post ) business of UK automotive technology development company Controlled Power Technologies (CPT). version of the vehicle but with fueleconomy and CO 2 emissions approaching those of a Prius.
Based on the results of the study, CAR believes the economic risk to the auto industry connected to mandating permanent fueleconomy standards in the long run is “ very serious ” The group recommends periodic review to assess the rate of technology development and cost reduction of advanced technologies leading up to 2025.
Anhui Jianghuai Automobile Group Co Ltd (JAC) and Ricardo are collaborating on a project to develop the Ricardo HyBoost concept ( earlier post )—a combination of low-cost technologies to deliver improved performance and fueleconomy which featured recently in the Ricardo Centenary celebrations —into volume production on a JAC vehicle.
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 fueleconomy benefits. Both solutions involve part load losses which compromise some of the fuel consumption savings made by downsizing.
Although delayed spark timing reduces engine efficiency at high loads, the compromise to improve part-load efficiency is beneficial to vehicle mileage, Pinnacle says. The high compression ratio and rapid late combustion provide sufficient effective expansion to maintain comparable full-load torque, EGTs and efficiency.).
One of the many emerging possible technology pathways to achieve those goals is the use of a future high-octane fuel in optimized, higher-compression-ratio engines. As a result, as the ethanol content of the fuel is increased, the fueleconomy and driving range for a given fuel tank size are reduced. Earlier post.)
In addition to improving the fueleconomy and range of the powertrain, Hyundai has also created a more compact power source for the Tucson ix FCEV. Hyundai will test about 50 new Tucson ix FCEVs throughout 2011 as part of the second phase of the Korean Government Validation Program. fueleconomy. Gasoline equiv.
Small displacement engines offer excellent CO 2 and fueleconomy benefits; they have lower parasitic losses and operate more efficiently under part load conditions. A major part of CPT’s effort has concentrated on optimizing the technology for automotive applications and establishing a manufacturing strategy and supply base.
Automakers are turning to downsized turbocharged engines to satisfy more stringent global fueleconomy and emission regulations and customer demand for better-performing vehicles. In addition to improving fuel efficiency, downsized turbocharged engines also reduce harmful exhaust emissions.
A multi-cylinder version is practical for a wide variety of vehicles and offers greatest benefit to C and D class passenger cars which can take advantage of the low cost architecture and significantly improved fueleconomy and emissions. The puck itself does not move at engine speed.
Renault estimates that electric vehicles will account for 10% of the world market by 2020; even given that aggressive forecast for electric vehicle penetration, 9 out of 10 vehicles will still be powered, at least in part, by a combustion engine. The swept volume inside the cylinder is smaller, so less fuel is consumed during each cycle.
While oil will remain the most widely used fuel, overall energy demand will be reshaped by a continued shift toward less-carbon-intensive energy source as well as steep improvements in energy efficiency in areas such as transportation, where the expanded use of advanced and hybrid vehicles will help push average new-car fueleconomy to 48 mpg (4.9
The analysis used the Ohio State University EcoCAR, a student prototype PHEV, as the basis for the preliminary fueleconomy evaluation. This evolution has led to the point where achieving significant fuel savings through the introduction of new technologies has become difficult. The OSU EcoCAR PHEV powertrain.
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. Turbocharging and downsizing can also yield fuel consumption reductions.
liter units which are part of a new generation of engines from the Kappa family—meet growing demand for small capacity, turbocharged engines to reduce fuel consumption and CO 2 emission without compromising performance. Both engines—1.0-liter liter and 1.4-liter
The SuperTurbo’s supercharger function enhances the transient response of a downsized and turbocharged engine, and the turbo-compounding function offers the opportunity to extract the available exhaust energy from the turbine rather than opening a waste gate. Downsizing from a 3.2L improved fueleconomy 17%, and downsizing from a 4.2L
While fueleconomy of engined-cars is the key technology pathway to decarbonizing the transport sector by 2020, the 2DS also envisages 20 million EVs on the road by 2020, with yearly sales reaching seven million vehicles. Engine downsizing and weight reduction represent around 30% of that potential collectively. billion to US$4.2
A 110cc pre-production prototype of a Pinnace Engine 4-stroke opposed piston scooter engine ( earlier post ) showed approximately a 27% improvement in fuel consumption across different scooter cycles compared to a conventional benchmark engine in dynamometer and simulation testing by FEV.
The new approach to natural gas combustion technology is designed to provide vehicle and engine original manufacturers (OEMs) with a “downsized” natural gas solution that is cost competitive while providing similar levels of power, torque, and fueleconomy to a larger diesel engine.
Current fueleconomy policy clearly demonstrates this fact. —“The Case for Technology Neutral Public Policy in FuelEconomy Debate”. The quickest and most cost-effective way to achieve our energy usage goals is through faster adoption of fuel-efficient downsized gasoline and diesel engines.
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.
GMZ Energy and its partners are on track to deliver a 1 kW thermoelectric generator (TEG) for the Bradley Fighting Vehicle as well as to design and to integrate a light-duty vehicle TEG into a Honda Accord as part of a DOE-funded project. In June, GMZ successfully generated 270 watts from a TEG as part of $1.5-million Earlier post.).
Navigant also projects that investments in alternative fuel and fuel efficiency improvements will reduce annual energy consumption in the United States year-over-year. Most developed countries in Western Europe and parts of Asia Pacific will also exhibit similar decreases in energy consumption.
To achieve its goals of lower emissions and better fueleconomy, FPT significantly downsized the 0.9-liter Dedicated tensioner tuning, an optimized layout and an enhanced design minimize friction to help improve fueleconomy and reduce emissions. liter TwinAir engine compared with its 1.2-liter
liter V8 biturbo engine will play a major part in the Mercedes-AMG model strategy over the next few years, according to the company. mpg US) (NEDC combined consumption, provisional figure)—a fuel savings of 25% compared to the current S63 AMG. The new AMG 5.5-liter liters per 100 kilometers (22.4 liters per 100 kilometers (22.4
In part-load operation, the indirect injection supplements direct gasoline injection to improve fueleconomy 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.
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. —CPT program manager Andy Dickinson.
GM’s fuel-economy plan through the 2016 model year focuses on a reduction in vehicle mass and aggressive investment in advanced materials, such as high-strength steel, carbon fiber and aluminum, enabled in part by our industry-first aluminum welding technology. Earlier post.).
Fiat expects that Multiair, with direct control of the air through the intake engine valves without using the throttle, can help reduce fuel consumption by up to 10% for turbocharged or naturally aspirated gasoline engines. A specific turbocharged engine version will be bi-fuel (gasoline-CNG).
An increase in pumping requirements for any reason carries a fueleconomy penalty. If peak BMEP is maintained below 35 bar, fuel enrichment is not necessary. When running at part loads, the engine operates at high compression ratios to minimized BSFC and maximize the sweet spot on the map.
There are four elements when in place that Nissan thinks will encourage wider market adoption of hybrids, Thunes said: affordable cost; meaningful fueleconomy gains; a rational evolution from conventional powertrains to hybrid powertrains; and preserving cabin space and cargo area. Overall fueleconomy is improved in a wide range.
Estimated price increases are based on current economic conditions and the concept of “incremental retail price equivalent (RPE) cost,” which represents the average additional price consumers would pay for a fueleconomy technology. For example, the report notes the promise of cylinder deactivation, turbocharging and downsizing.
Fuel Efficiency Improvement Technologies for Conventional Stoichiometric Gasoline Direct Injection Multi-Cylinder Internal Combustion Engine. All fuel consumption testing must be conducted according to automotive industry norms. For this subtopic, novel ignitions systems by themselves will not be considered.
Extreme compression ratio rather than downsizing. Although downsizing—i.e., reducing displacement to improve fueleconomy and offsetting the resulting loss of power and torque via charging—is an effective approach to reducing fuel consumption, Mazda has chosen a different route.
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