Sentences with phrase «higher engine efficiency»

Was that because we got richer, because gas prices were low, or because the real cost of powering a ton of steel at 60 miles an hour dropped due to higher engine efficiency?

For high engine efficiency, power and torque, the V6 engine uses a centrally mounted fuel injector and a combustion method with shorter compression and longer expansion phases.

Not exact matches

And then there are six of the of the vacuum, the high - efficiency vacuum engines around the perimeter, and those of those don't gimbal.

Even more damningly, the already - mediocre efficiency of most thermoelectric substances drops off still further at high temperatures, making them useless for things like car engines.

One area of their research seeks to match engine combustion modes with improved fuel properties to create higher efficiency and lower emission transportation technologies.

Kornbluh reports that automakers are interested in these mechanisms as replacements for the many small electric motors found in cars, such as in motorized seat - position controls and in the valve controls of high - efficiency camless engines.

In the familiar heat engine model at macroscopic scale, referred to as the Carnot heat engine, the efficiency increases as a function of the ratio between the temperatures of the low - and high - temperature baths.

By comparison, the efficiency of two - level quantum heat engines is related to the level of quantum entanglement in these two states, which are either at a low or a high temperature, and display the same probability of being occupied.

The authors found that their heat engine model only yields high efficiency and output power when the number of photons involved is small; accordingly, its efficiency and power output rapidly decrease as the number of photons increases.

Professor Ken Naitoh of Waseda University's Faculty of Science and Engineering (Department of Applied Mechanics and Aerospace Engineering, School of Fundamental Science and Engineering) and his associates have discovered a revolutionary energy conversion principle (new compressive combustion principle) able to yield stand - alone engines with double or higher the thermal efficiency potential of conventional engines, independent of their size.

Therefore, if automobiles could be equipped with «low - cost, ultimate - efficiency engines,» reaching a stand - alone thermal efficiency of 60 % or higher over a wide range of driving conditions, it is believed that a substantial fuel consumption superior to that of current hybrid system automobiles could be a reality.

Posted on 10 August 2015 in Engines, Ethanol, Fuel Efficiency, Fuels, High Octane Fuels, Methanol Permalink Comments (0)

The benefit is higher efficiency jet engines and power turbines that produce more power and less greenhouse gases, which is a good thing for the planet.»

The benefit to this system is the retention of very high efficiency while drastically reducing / eliminating the exhaust after - treatment demand of current diesel engine systems.

The data will help advance gas turbine engine designs for higher power density and efficiency, scientists said.

The engine «struggling» to intake air at high engine speed is measured as «volumetric efficiency».

Because Two - Mode is a second - generation approach conceived by transmission experts instead of engine specialists, gasoline and electric power sources are more ingeniously combined with fixed and variable gear ratios to achieve higher efficiency over a broader range.

By combining the high - revving performance of petrol power and superior torque and fuel economy of diesel propulsion, Mazda quotes 10 - 30 per cent increases in torque and 20 - 30 per cent gains in engine efficiency over the current Skyactive - G generation engines.

Toyota Motor Corp. says its more - powerful, second - generation hybrid electric vehicles (HEVs) will continue to use internal combustion engines that operate with the high - efficiency Atkinson cycle, says David Hermance, director of the Toyota Technical Center.

For the # 16,430 SEAT it's a diesel's high thermal efficiency, allowing an official 61.4 «combined» mpg and 123g / km (diesel produces more CO2 per volume unit burnt than petrol does), while for the # 20,660 Volkswagen it's the use of forced induction on a downsized engine resulting in official figures of 42.8 mpg and 154g / km.

Fuel - efficiency ratings for all three engines are yet to be announced, but GM says the 2.5 L will achieve the highest fuel economy in Cadillac's history, well above 30 mpg (7.8 L / 100 km).

Toyota will use high - efficiency Atkinson - cycle engines in its new Hybrid Synergy Drive powertrains.

The engine features both port and direct fuel injection - variable according to performance and efficiency demands - and variable valve lift and timing also help balance a high power output with reasonable fuel efficiency.

So, we have an engine design trend for vehicles (that are designed to carry varying weight) that reads like this; more * constant / high value torque over a greater rev range, preferably starting as low as possible within the rev range, and with efficiency, reliability, and economy if possible.

Motorcycles, on the other hand do not have quite such a large potential for varying weight (as cars), and as such their engines don't need to be straddled with these same design limitations / specifications; hence their emphasis on high rotational speeds, light weight, high volumetric efficiencies, and KW - rather than (specifically) torque.

It uses an all - new rotary powerplant named Skyactiv - R, a reference to Mazda's current line of high - efficiency engine technologies.

Applied automatically at medium to high speeds, the engine uses a fixed - gear transmission that provides a mix of power and efficiency similar to that of a fifth or sixth gear in a car with a manual transmission.

The engine is bound to be one of the last of its kind: high - revving, normally aspirated, tuned for emotion rather than for efficiency.

GDI engines generally deliver lower carbon dioxide emissions due to their higher fuel efficiency, but have recently come under scrutiny for their higher particulate emissions relative to port - injected engines.

With an automatic transmission this is very difficult because if you try to run the engine at wide open throttle the automatic transmission will extend your shift point up to the high RPM range and you will get very bad BSFC and in turn efficiency.

Not only will this reduce the use of fossil fuels, but the higher purity fuels made in this way can be used in even higher compression ratio engines, increasing efficiency even more.

The main reason for these new low viscosity oils is fuel efficiency, the side effect is engineers have changed the oiling systems on new cars in various ways that do not tolerate high viscosity oils, but could assume you are correct about reducing warm up time before oil flows to all internal parts in the engine.

According to Reithofer, regarding the Megacity, «Customers will have the choice between a fully electric drive and a high - efficiency combustion engine.»

The next - generation Mazda Miata is expected to be slightly longer than today's car for a roomier interior, as well as making space for the Skyactiv engines, which have a long and bulky exhaust manifold design to enable their high fuel efficiency.

In harmony with its touchy - feely image, Volvo's new Drive - E family of four - cylinder gas and diesel engines emphasize low emissions and high fuel efficiency.

In DOHC engines a shorter stroke and a larger piston can allow for a higher RPM and more efficiency at higher RPM's due to less reciprocating weight related to the connecting rods, pistons and crankshaft.

Although this smaller - displacement turbo four - cylinder has lower internal friction and reduced pumping loss than a Skyactiv V - 6 would, fuel efficiency drops when the engine is under high load, as the engine runs richer to help keep the cylinders cooler.

Select hybrid mode and it mixes use of the gas engine and electric motor for optimum efficiency and performance, while the PSM Sport mode allows a «significantly sportier» driving style and Sport + mode recharges the battery at a much higher rate.

Both new V - 6 engines feature an aluminum block, higher - flow cylinder heads, a new two - stage oil pump, and efficiency - enhancing features like cylinder deactivation and engine start / stop.

Hear the VR - series 3.0 L twin - turbo engine perform and see how its twin turbochargers produce high - performance while improving fuel - efficiency 6.7 percent over the 3.7 L V6 previously available in the Q50 and Q60.

Optimum weight distribution, classic rear - wheel drive and powerful, high - efficiency petrol and diesel engines with BMW

In basic form, the single cam lobe and follower / rocker arm of a conventional engine is replaced with a locking multi-part rocker arm and two cam profiles: one optimized for low - RPM stability and fuel efficiency, and the other designed to maximize high - RPM power output.

All engines are characterized not only by their impressive performance and high efficiency but, above all, by the typical resonance of acoustic test chamber in Porsche Development Center, Weissach their sound, making a particularly strong impression in conjunction with the optional sport exhaust system.

A wide ratio spread gives you the power you need from launch to overdrive with quick take - off capabilities in first gear and lower engine speeds for enhanced efficiency in higher gears.

This van is perfect for any organization or business, boasting a turbocharged engine and a host of convenient features, including Driver Comfort and Efficiency Packages, an additional curbside folding seat in the second row, a rearview camera, high performance air conditioning, and plenty more!

As diesel engine speeds and loads increase, the higher cylinder temperatures after compression of the intake charge result in increased injection and ignition efficiency due to increased fuel atomization.

In general, a higher axle ratio offers more towing power and quicker acceleration, while a lower axle ratio offers better engine efficiency and quieter vehicle operation.

VTEC (Variable Valve Timing & Lift Electronic Control) is a system developed by Honda which was said to improve the volumetric efficiency of a four - stroke internal combustion engine, resulting in higher performance at high RPM, and lower fuel consumption at low RPM.

This engine produces 248 horsepower and 250 pound - feet of torque, making it possible to tow up to 3,500 pounds while remaining at the high end of efficiency with a mileage rating of 19 city / 28 highway **.

A dynamic design with a compact footprint provides seven - passenger seating, the 2015 Discovery Sport will deliver a highly refined combination of performance, safety and efficiency thanks to a body shell of high - strength steel and lightweight aluminum, a 240hp turbocharged 2.0 - liter engine, nine - speed automatic transmission and standard all - wheel drive.