Mazda's SkyActiv-X: diesel fuel economy from gasoline engine

Green Car Reports

The internal combustion engine, now more than 200 years old, will be with us for a long time to come yet. combustion cycle HCCI Fuel Economy SKYACTIVPowering more than 1 billion vehicles on the planet and almost 100 million new ones each year, it is the default way to move vehicles along the world's roads. With its carbon emissions now conclusively implicated in climate change, electric.

UPS updates 125 Workhorse E-GEN series hybrid electric step vans with smaller genset engine for better fuel economy

Green Car Congress

UPS announced an update to 125 Workhorse E-GEN series hybrid electric delivery trucks that improve fuel economy as part of the company’s broader Rolling Laboratory approach. A compact, quiet-running 650cc 2-cylinder engine replaces the previous 2.4L

2016 44

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How Mazda's SkyActiv-X engine, based on HCCI, actually works (video)

Green Car Reports

In 2019, Mazda will introduce a gasoline-powered Homogeneous Charge Compression Ignition engine, dubbed Skyactiv-X, that the automaker promises will offer huge strides in efficiency and fuel economy. Gasoline HCCI Engines gasoline engines

2019 45

Will Fuel Economy Rules Require Future Cars To Use Premium Gas?

Green Car Reports

Carmakers are pursuing continual fuel-economy gains to meet the Corporate Average Fuel Economy (CAFE) standard of 54.5 Their engineers work to squeeze every last bit of efficient from cars and trucks, but so far there's been little consideration of the fuel itself. Some efficiency-focused upgrades to standard gasoline engines. Gasoline Fuel Economy octane

MPG 25

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

Green Car Congress

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 Cost of the new engine relative to gasoline baseline.

2014 32

Mazda announces SKYACTIV-X: gasoline Spark Controlled Compression Ignition

Green Car Congress

As part of the new technology to achieve this vision, the company disclosed plans to introduce a next-generation gasoline engine called SKYACTIV-X in 2019. SKYACTIV-X—which Mazda believes will be the first commercial gasoline engine to use compression ignition—uses a proprietary combustion method called Spark Controlled Compression Ignition (SPCCI). SKYACTIV-X even equals or exceeds the latest SKYACTIV-D diesel engine in fuel efficiency.

2017 34

2019 Mazda 3 to feature world-first HCCI engine for efficiency: report

Green Car Reports

Now Mazda, one of the smallest global automakers, plans to introduce it in a radical new engine to be used in a future Mazda vehicle in 2019. It's called homogeneous charge compression ignition, or HCCI: in essence it lets a gasoline engine. HCCI Engines Fuel Economy SKYACTIVIt's a technology that's been a sort of Holy Grail in the auto industry for at least a couple of decades.

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

Green Car Congress

The concept of using a second, high octane fuel on demand to augment the performance of a standard gasoline fuel reaches back to the 1940s, with a recent resurgence in interest generated by the need to increase engine efficiency.

2017 46

Ford Engine Power, MPG Figures Tested Using Different Fuels

Green Car Reports

Most buyers likely assume that the conditions for rating a new car's fuel economy and engine performance are identical. For at least one carmaker--Ford--and possibly others as well, that turns out not to be the case: Different gasoline formulations are used to test gas mileage than are used for engine. Green E10 EPA Ratings Fuel Economy Gasoline horsepower octaneIt's all about the asterisk, it turns out.

2015 23

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

Green Car Congress

Performance of the new ESTEC engine (1NR-FKE) compared to the current 1NR-FE engine applied in the Yaris. The Atkinson cycle with a high compression ratio is a common approach that hybrid vehicle engines use to enhance thermal efficiency. Engines Fuel Efficiency

2014 23

New SwRI consortium to target advances in gasoline and diesel engine aluminum cylinder head designs

Green Car Congress

The Aluminum Head Evaluation, Analysis, and Durability ( AHEAD ) consortium seeks to reduce the weight while improving the durability of aluminum cylinder heads—an increasingly important need as materials and components are pushed to their limits in modern engines. As fuel economy and greenhouse gas regulations drive the need for lighter-weight engines, cylinder heads and their components will need to change. Engines Powertrain materials Weight reduction

2016 41

2015 Ford F-150 offers highest EPA-estimated fuel economy among full-size gasoline-powered pickups

Green Car Congress

The new 2015 Ford F-150 ( earlier post ) 4x2 with Ford’s 2.7-liter EcoBoost engine has EPA-estimated ratings of 19 mpg city, 26 mpg highway and 22 mpg combined (12.4, l/100 km, respectively)—the highest EPA-estimated fuel economy ratings of any gasoline-powered full-size pickup sold in America. That is 5% to 29% better than current F-150 models, depending on engine and driveline configuration on the combined cycle.

MPG 13

Toyota’s second turbocharged gasoline engine now available in Auris in Japan; 36% thermal efficiency

Green Car Congress

Toyota Motor has introduced its second turbocharged engine (following the 2.0-liter in the Lexus NX 200t turbo last year, earlier post ) from a series of new engines with improved thermal and fuel efficiency. Toyota announced the new engine in March at the Geneva Motor Show.

2015 34

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

Green Car Congress

billion) in its strategic engine initiative. The optimization of advanced high-tech engines plays a key role in our road map towards sustainable mobility. The new engines] also need to be designed with a view to all current and future requirements. Coasting with engine off.

2016 34

ORNL study finds multi-mode RCCI can offer 15%+ fuel economy improvements across multiple light-duty driving cycles

Green Car Congress

Drive cycle fuel economy for PFI, CDC, and multi-mode RCCI operation. Their paper is published in the International Journal of Engine Research. During RCCI-only operation, fuel usage was found to be between 57 and 69% gasoline. Dual-fuel RCCI injection strategy.

2015 20

2017 Chevrolet Cruze Diesel: fuel economy review for automatic, manual versions

Green Car Reports

Also, gasoline remains cheap. All of which may add up to tough times for the current Chevrolet Cruze Diesel, the compact sedan to be offered with a high-efficiency turbo diesel engine. Times are tough for sedans in general, as buyers swarm into crossover utility vehicles and ignore the passenger cars sitting next to them on the showroom floor.

Cheap 16

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

Green Car Congress

Since 2013, the share of premium gasoline in total motor gasoline sales in the US has steadily increased to 11.3% One significant trend is engine downsizing coupled with turbocharging. The octane rating of gasoline is an indicator of its resistance to spontaneous combustion.

Fuel 20

UMTRI study finds total cost of ownership of diesels in US often much less than gasoline counterparts

Green Car Congress

The report— Total Cost of Ownership: A Diesel Versus Gasoline Comparison (2012-2013) —was underwritten by Robert Bosch LLC. Percentage differences in miles per gallon (mpg) between comparable diesel and gasoline vehicle pairs. Diesel Engines Fuel Efficiency

2015 41

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

Green Car Congress

The system was realized with the new 1.4-liter gasoline-fueled TSI of the Polo BlueGT. The TSI develops a power output of 103 kW / 138 hp, with a combined fuel consumption of 4.7 If the Polo BlueGT is ordered with the optional 7-speed dual clutch gearbox (DSG), fuel consumption drops further to 4.5 TSI in the Polo BlueGT is the top engine of the entirely new EA211 series of petrol engines. Engines Fuel Efficiency Vehicle SystemsPolo BlueGT.

MPH 11

SwRI develops D-EGR demonstrator highlighting fuel-efficient, cost-effective engine; 10% and above fuel economy improvements

Green Car Congress

Southwest Research Institute (SwRI) has built a demonstrator vehicle, based on a 2012 Buick Regal GS, incorporating the latest D-EGR (dedicated EGR) technology ( earlier post ), an outgrowth of SwRI’s HEDGE (High Efficiency Dilute Gasoline Engine) consortium projects ( earlier post ).

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

Green Car Congress

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.

2011 edition of EPA Fuel Economy Trends report shows several advanced powertrain technologies making significant gains

Green Car Congress

In terms of market share, gasoline direct injection doubled in MY 2010 (from 4.2% Conventional gasoline vehicles continue to account for more than 95% of all light-duty vehicles. Fuel economy improvements for diesels range from 15% to 30% relative to gasoline counterparts.

2010 17

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

Green Car Congress

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. I4 Ecotec engine.

Pinnacle 4-stroke opposed-piston SI engine shows fuel economy improvements of between 30-60% at light loads, 12-30% at medium loads over conventional

Green Car Congress

MJ/kg) (4000 RPM) between 250cc Pinnacle and 200cc poppet valve engine. Net indicated efficiency of the Pinnacle Opposed-Piston engine, CR = 15:1, 87 Octane. Pinnacle Engines’ 4-stroke opposed-piston engine. —Tony Willcox, Pinnacle Engines. Engines

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

Green Car Congress

million to continue development of a new, patented, high-efficiency, lighter-weight rotary engine. hp/lb, making it up to ten times (10x) more powerful than a standard diesel engine with the same weight. Water may be injected to internally cool the engine.

2016 46

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

Green Car Congress

six-piston) light-duty version of its opposed piston engine (OPE) in both diesel- and gasoline-fueled versions. Achates will demonstrate the engine in 2018 in a driveable light-duty truck. Achates light-duty development engines will be available for automakers.

2017 46

Obama Administration announces first fuel economy and GHG standards for medium- and heavy-duty vehicles

Green Car Congress

US President Barack Obama announced fuel efficiency and greenhouse gas emission standards for medium- and heavy-duty vehicles. Heavy-duty engines affected by the final standards are generally those that are installed in commercial medium- and heavy-duty trucks and buses.

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

Green Car Congress

In Europe, Volkswagen has introduced the new Golf TSI BlueMotion featuring a new 1.0-liter, 3-cylinder with low fuel consumption of 4.3 mpg US) (99 g/km CO 2 )—more efficient than any previous Golf with a gasoline engine. engine) introduced in 1975.

2015 28

SwRI launches HEDGE-III; high-efficiency gasoline engine consortium targets LEV III, best efficiency of 43%

Green Car Congress

HEDGE-III will investigate solutions to the primary barriers to high efficiency in gasoline engines. This four-year effort will expand on earlier efforts to improve gasoline engine technology for future emissions and fuel economy requirements.

2013 26

New Porsche 911 Turbo improves fuel economy by 16%

Green Car Congress

The new generation Porsche 911 Turbo and Turbo S, equipped with new advanced engines, PDK transmission, new combined thermal management system for the turbo engine and the transmission, the new Porsche Traction Management (PTM) all-wheel drive system, and other fuel efficiency technologies such as start/stop and active aerodynamics, have reduced NEDC fuel consumption by up to 16% to 9.7 Engines Fuel Efficiency Vehicle Systems

MPH 9

CPT, TU Wien study finds 48V mild diesel hybrid cuts engine-out NOx 9%, 4.5% fuel economy improvement

Green Car Congress

A joint study by Controlled Power Technologies (CPT) and Austria’s Technische Universität Wien (TU Wien) into 48V diesel mild hybrid technology verified a 9% reduction of NO x in raw engine-out emissions, while retaining the fuel economy and CO 2 benefits of diesel engine technology. —Paul Bloore, CPT’s manager responsible for applications engineering and strategic projects.

Mercedes-Benz introducing diesel E 300 BlueTEC HYBRID with fuel economy of 56 mpg US; gasoline-engined E 400 HYBRID model to follow

Green Car Congress

Mercedes-Benz is introducing the new E 300 BlueTEC HYBRID; the luxury-class diesel hybrid offers fuel consumption of 4.2 The E 300 BlueTEC HYBRID is based on the E 250 CDI, yet has a higher output and approximately 15% lower fuel consumption. Engine.

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

Green Car Congress

The Energy dCi 110 diesel offers fuel consumption of 3.5 The 1.2-liter Renault Energy TCe 115 is the first Renault gasoline engine to feature direct fuel injection and turbocharging for fuel-efficient performance. 16V engine. Engines Fuel Efficiency

2012 12

2015 Hyundai Sonata Eco: Gas Mileage Review

Green Car Reports

The 2015 Hyundai Sonata Eco is the Korean maker's most fuel-efficient mid-size sedan that doesn't use a hybrid powertrain. And it highlights the two parallel paths that automakers are taking as they work to boost gas mileage ratings to meet steadily rising corporate average fuel economy rules. The Sonata Eco uses a smaller gasoline engine, a. Driven Fuel Economy Sonata Eco

2015 23

MAHLE Jet Ignition for Ferrari F1 as well as sub-200 g/kWh BSFC in light-duty engine; on-road and stationary applications

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combustion, with its attendant benefits of reduced fuel consumption and emissions—for a number of years. MAHLE Jet Ignition (MJI) uses a pre-chamber in conjunction with a spark plug and secondary fuel injector. Emissions Engines Fuel Efficiency

2016 46

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

Green Car Congress

Specific BSFC improvements from the D-EGR engine relative to baseline engine. Overall, the engine offered a 13.1% improvement in city fuel economy (24.5 The D-EGR demonstrator is a converted 2012 Buick Regal with a 2.0-liter gasoline direct injection engine.

2014 42

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

Green Car Congress

Mazda North American Operations released EPA-estimated fuel economy figures for its all-new 2016 Mazda CX-9. In Canada, NR Canada estimates of fuel consumption put the improvement at 35%.). engine, which produces the power of a V-6 engine without the fuel-efficiency penalty.

2018 Chevrolet Equinox Diesel (very brief) first drive

Green Car Reports

We spent a few days with a gasoline-powered 2018 Chevy Equinox back in May, but now we've driven a much rarer version. On Wednesday, as part of a comprehensive presentation on the five diesel engines GM uses globally, we got some "seat. Fuel EconomyThe 2018 Chevrolet Equinox Diesel will start to arrive at U.S. Chevy dealers within two weeks, the company says.

EPA annual report on CO2, fuel economy and technology trends finds 2012 heading for all-time best; rapid adoption of new technologies

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Adjusted CO 2 emissions and adjusted fuel economy, MY 1975-2011. The US Environmental Protection Agency (EPA) released its annual report summarizing key trends in carbon dioxide emissions, fuel economy, and CO 2 - and fuel economy-related technology for gasoline- and diesel-fueled personal vehicles sold in the United States, from model years (MY) 1975 through 2012. Engines Fuel Efficiency Market Background

PSA Group fitting gasoline particulate filters on all GDI engines from December 2017

Green Car Congress

The PSA Group has developed a Gasoline Particulate Filter (GPF), to treat particle emissions from gasoline direct injection (GDI) engines. These engines are being upgraded on this occasion to increase performance and output, and thus increase fuel economy even further.