EIA: trends in downsized engine design leading to increased demand for higher-octane gasoline

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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.

New 7th-generation Hyundai Sonata updates design, tweaks powertrain

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design language, stiffer body structure, better ride quality, reduced noise, vibration and harshness and advanced safety and convenience features. Theta II featured numerous design enhancements over its predecessor, beginning with a three-stage variable induction system (VIS) which automatically adjusted the volume of the air sucked into the combustion chamber to create an air-to-fuel mix optimized for varying engine load conditions. 2015 Sonata 2.0T Click to enlarge.

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Corning expands light-duty vehicle exhaust filter capacity in Germany

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Diesel vehicle manufacturers are striving for greater engine performance and fuel economy while meeting Euro 6 emissions standards under a myriad of driving conditions. Featuring an optimized material microstructure, the filter’s highly porous walls enable higher catalyst coatings to address tighter emissions limits without impacting fuel economy.

Cummins progressing with lightweight downsized T2B2 diesel for pickup; 40% improvement in fuel economy over gasoline V8

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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 Exhaust system configuration.

Toyota implements Atkinson cycle in non-hybrid ESTEC engine; up to 38% thermal efficiency and improved fuel economy

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The result of their work, presented in papers this spring at the SAE 2014 World Congress, the Vienna Motor Symposium, and the JSAE Annual Congress, is the new 1.3-liter ESTEC (Economy with Superior Thermal Efficient Combustion) in-line 4-cylinder Gasoline Engine (1NR-FKE).

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2016 Mazda CX-9 shows 32% improvement in EPA-estimated fuel economy over predecessor; SKYACTIV-G 2.5 turbo

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Mazda North American Operations released EPA-estimated fuel economy figures for its all-new 2016 Mazda CX-9. Traditionally, turbocharged engines have suffered from poor dynamic performance at low rpm, including turbo lag, and disappointing real-world fuel economy.

Viable exhaust-driven on-board ethanol reforming for improvements in fuel economy and emissions

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Schematic diagram of the successful “shoebox” reformer design and a picture of the core, after insertion of the catalyst. Many papers have described high-temperature steam reforming of ethanol at around 600 °C but.this temperature is too high to be driven by engine exhaust.

New 3rd generation Audi TT diesel offers fuel economy of 56 mpg

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Controllable flaps in the exhaust system modulate the sporty sound and make it even richer. The special pump design reduces weight by around 1.5 3 rd generation Audi TT. Click to enlarge. Audi is unveiling the third-generation of its TT compact sports car at the Geneva Motor Show.

2014 12

GM: new Sierra 5.3L V-8 EcoTec3 highway fuel economy tops Ford EcoBoost V-6

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In addition to highway fuel economy estimates that are 2 mpg higher than a 2013 Ford V8 pickup equipped with a 5.0L 2WD Pickup truck fuel economy comparisons. Fuel economy. Source: GM, Ford, Model Year 2013 EPA Fuel Economy Guide. 2014 5.3L

Major refresh on 2015 Honda CR-V with new Earth Dreams powertrain provides fuel economy gain of up to 12%

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The 2015 CR-V features increased EPA fuel economy ratings of 27/34/29 mpg (8.7/6.9/8.1 The CR-V’s 2.4-liter engine has a lighter-weight die-cast aluminum cylinder block with a main-bearing single cradle design that creates a rigid assembly to help minimize noise and vibration.

2014 12

New Chrysler 300 Luxury Series sedan mates 8-speed automatic to V6 Pentastar; up to 17% improvement in fuel economy

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Designed to be the most fuel-efficient Chrysler flagship sedan yet, the new 2012 Chrysler 300 Luxury Series combines an eight-speed automatic transmission with the 292 hp (218 kW) 3.6-liter Pentastar V-6 engine to deliver 31 mpg US highway (7.6 The new model delivers up to a 17% fuel economy improvement compared with the previous generation six-cylinder Chrysler 300 AWD models equipped with 5-speed transmissions. Best-in-class V-6 AWD fuel economy (18 mpg city, 27 mpg highway / 13.0

Update on the ACCESS fuel efficient engine project; simulations find up to 48.9% improvement in fuel economy over baseline

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Robert Bosch LLC, AVL Powertrain Engineering and partners including the University of Michigan are working on a four-year, $24-million US Department of Energy (DOE)-supported project— Advanced Combustion Concepts—Enabling Systems and Solutions (ACCESS)—to achieve a 30% fuel economy improvement in a gasoline-fueled light-duty vehicle without compromising performance while also meeting SULEV emission standards. Design. improvement in fuel economy over the baseline.

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Renault introducing three Energy engines in the Mégane Collection 2012; fuel economy up to 67 mpg US

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Individualized spray cone angle technology compensates the natural nozzle offset inherent in eight-valve engines due to the asymmetry of the intake and exhaust valves. A multi-injection system designed to optimise regeneration of the particulate filter.

2012 12

MAHLE study finds its Turbulent Jet Ignition pre-chamber initiated combustion system can deliver HCCI-like fuel economy in a conventional PFI engine

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Computer-generated image of the Turbulent Jet Igniter, designed to replace the spark plug in a modern spark ignition combustion system. The switching of combustion modes limits fuel economy improvements and maximum compression ratio for knock avoidance.

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ACCESS project targeting 30% improvement in fuel economy and SULEV emissions in light-duty gasoline engine; multi-mode SI/HCCI combustion

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Elements of the multi-mode combustion system include: Spark-ignited (SI) combustion with high compression ratio and high boost assisted by cooled external exhaust gas recirculation (EGR). Emitec is heading up the work on aftertreatment design and improvements.

2011 12

GM develops integrated exhaust manifold cylinder head for 3.6L V6 direct injection engine; improvement in performance, fuel economy, emissions and noise

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The reduced complexity of the design of the new integrated exhaust manifold cylinder head ( bottom ) compared to the old ( top ). GM has combined the exhaust manifold with the cylinder head into a single aluminum casting in the 2012 Camaro 3.6L

GM details 2016 Chevrolet Malibu Hybrid powertrain design and operation

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Development was guided by four main objectives: Increased fuel efficiency under US EPA 5 cycle fuel economy test conditions. The new engine is fitted with an exhaust gas heat recovery (EGHR) system. However, the transaxles were designed with unique rotors specific to the application.

New Volkswagen Polo BlueGT with cylinder deactivation offers gasoline engine fuel economy of up to 52 mpg US

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To further reduce emission and fuel consumption values and improve torque in the lower engine speed range, the intake camshaft was designed to be adjustable over a range of 50 degree crank angle on all EA211 engines; in the 1.4 TSI of the Polo BlueGT, an exhaust camshaft adjuster is added. Polo BlueGT. Click to enlarge. Volkswagen introduced the new Polo BlueGT at the Geneva Motor Show.

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Toyota introduces 7th generation Camry for 2012 with improved fuel economy and performance across all models; ~39% jump in EPA city cycle fuel economy for the hybrid

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The projected city/highway/combined fuel economy for the LE model equates to 5.47, 6.03 Lighter overall vehicle weight also contributes to better performance and fuel economy. Lower rolling resistance tires, available for the first time in 17-inch size, also help boost fuel economy.

Environment Canada/MECA team assesses black carbon emissions in GDI engine exhaust; evaluation of prototype gasoline particulate filter

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In addition, the inhomogeneity of the fuel mixture under stratified operation in GDI engines during the compression stroke tends to contribute to higher particulate emissions compared to the exhaust emissions from traditional PFI engines.

DARPA awards LiquidPiston $2.5M to advance further X4 rotary engine prototype

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LiquidPiston will be developing its X4 test rig: a prototype 30 kW diesel X-engine, with targeted brake specific fuel consumption (BSFC) of 186 g/kWh (better fuel efficiency than heavy duty truck engines, and twice the fuel economy of a gasoline engine over a typical drive cycle).

PowerDriver simulations predict thermoelectric exhaust waste heat recovery output of 300W, -2.5% in fuel consumption; prototyping begins

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The European Union-funded PowerDriver project—a two-year, €3-million (US$4-million) research project initiated in February 2012 to turn exhaust gas waste heat into electricity using thermoelectric generator (TGEN) technology—has completed simulation work on on a potential automotive application. This is not least due to the fact that the TGEN is located within the exhaust line and is subject to significant thermal cycling.

Saudi Aramco team finds dual-fuel Octane-on-Demand concept can outperform E30 gasoline

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Nevertheless, volumetric fuel economy parity with existing market gasolines has so far been difficult to achieve, due to the lower energy density of fuels with significant methanol or ethanol content. The combustion chamber featured a modern penthouse roof design and four-valve cylinder head.

JCB New Ecomax T4 Engine Uses Ricardo Low Emissions Combustion Technology; Tier 4 Interim Level Emissions With No Exhaust Aftertreatment

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This technology enables the elimination of exhaust aftertreatment and provides a cost-effective, durable and high fuel economy solution for mid-range off-highway engine customers. The JCB EcoMax T4 Tier 4 engine. Click to enlarge. JCB introduced its new ‘Ecomax T4’ 4.4

Achates Power building 2.7L opposed-piston light-duty engine; exceeding CAFE 2025, Tier 3 targets at lower cost

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The 2.7-liter compression-ignition OPE will will be 30-50% more fuel efficient than comparable diesel and gasoline direct injection engines, reduce emissions and cost less than alternative technologies under development for meeting 2025 CAFE fuel economy and Tier 3 emission targets.

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Mercedes-Benz introducing new diesel family in E 220 d this spring; new OM 654 with 13% lower fuel consumption; diesel “indispensable”

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The new premium diesels are more efficient and powerful, lighter and more compact, and they are designed to meet all future global emissions standards. Further, all the elements of the exhaust aftertreatment system are now configured directly on the engine itself and no longer on the vehicle.

Qoros Auto unveils drivable engineering development car with QamFree engine; near +50% boost in power & torque, -15% fuel consumption

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This results is much more precise and completely customizable control over valve duration and lift, on both the intake and exhaust sides. The benefits are not confined to significant performance improvements and better fuel economy.

SAE REX: PHEVs and REEVs could open door for advanced combustion regime engines

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As we look along the spectrum of increasingly electrified vehicles, what is the design space that this increasing amount of electrification opens up to optimizing? As we start to explore this higher degree of electrification, there are going to be some very different design requirements for internal combustion engines. Major changes to the base engine included: design and programming of a new Engine Control Unit (ECU).

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NSF and DOE form Partnership on Advanced Combustion Engines; goal 25-40% better LDV fuel economy and 55% BTE in heavy-duty engines; $12M in awards for FY 2012-2014

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The high-level performance goals of the Partnership are a 25-40% improvement in fuel economy in a light-duty vehicle (LDV) and achieving 55% brake thermal efficiency (BTE) in heavy-duty engine systems. For example, the fuel economy of light-duty vehicles could potentially be improved by 75 percent and heavy-duty vehicles by 30 percent with concepts that are just beginning to be better understood. bio-derived) fuels have the potential to dramatically increase fuel economy.

Ford Conducts Design of Experiment Investigating Thermoelectric Energy Regeneration

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Conceptual schematic of direct thermoelectric generator mounted in a vehicle’s exhaust stream. The exhaust energy content of Atkinson-cycle engines, which are used in many hybrid powertrains, is lower than conventional IC engines due to the cycle’s inherently higher thermal efficiency.

Mercedes-Benz powering ahead with €3B strategic engine initiative; increasing electrification, 48V; diesel and gasoline; cylinder deactivation

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The new engines] also need to be designed with a view to all current and future requirements. 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.

Toyota’s new conventional and hybrid powertrains for 2018 Camry deliver significant boost in efficiency

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Along with the new platform, an all-new 2.5-liter four-cylinder Dynamic Force Engine, new Direct Shift-8AT eight-speed automatic transmission and a new double wishbone rear suspension design are all representative technologies that have evolved through TNGA.

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Iveco launches the New Stralis XP long-haul truck; fuel savings up to 11%

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The New Stralis 480XP and 570XP, designed for extra-long haul missions, feature Smart EGR, which works in combination with Iveco’s patented HI-SCR after-treatment system to optimize combustion, resulting in fuel savings on long distances.

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New BMW 3 Series Gran Turismo improves fuel economy by up to 14%

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All members of the engine family share a standardized design principle, with a displacement per cylinder of 500 cubic centimeters, an in-line cylinder arrangement and an extremely lightweight, thermodynamically optimized all-aluminium construction.

SwRI D-EGR gasoline demo vehicle delivers diesel efficiency at lower cost; potential for LEV III/Tier 3 emissions

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improvement in city fuel economy (24.5 Southwest Research Institute (SwRI) announced preliminary test results of its Dedicated-Exhaust Gas Recirculation (D-EGR) demonstration vehicle ( earlier post ) at the SAE 2014 World Congress in Detroit.

FCA US upgrades 3.6L Pentastar V-6; 2-step VVL, cooled EGR; up to 6% better fuel economy

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Depending on the application, the redesigned V-6 delivers fuel-economy improvements of more than 6% while increasing torque more than 14.9%. This translates to a fuel-economy improvement, on its own, of up to 0.8%. improvement in fuel economy.

Volkswagen introduces new 1L, 3-cylinder gasoline Golf; 54.7 mpg

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The Volkswagen EA211 engine series served as the foundation for designing the new 1.0 Exhaust manifold integrated in cylinder head. The exhaust manifold of the 1.0 On top of that, Volkswagen engineers designed a dual-loop cooling system.

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Honda includes stop-start system in new 2016 Honda Pilot for improved fuel economy, new 9-speed

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The 2016 Pilot, launching at Honda dealerships nationwide this summer, is the third generation of Honda’s three-row midsize SUV to be designed, developed and manufactured in the US. This is the main reason why deactivating the cylinders contributes to improved fuel economy.

GM provides technical details of the Gen 2 Voltec propulsion system used in the 2016 Volt

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After proving a initial look at the design and capability of the different components ( earlier post ) late last year, GM is now providing deeper technical insight into the second-generation platform. Key design goals included: Increased all-electric range.

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Fraunhofer characterizes Alphabet Energy thermoelectric PowerCard; up to 5% fuel economy improvement in automotive

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The PowerCard generates power from exhaust source temperatures ranging from 400-600 °C using Alphabet Energy’s proprietary thermoelectric materials: tetrahedrite and magnesium silicide stannide.