Sentences with phrase «higher compression ratio»

The controlled combustion feature enables the engine to run with higher compression ratio to deliver greater power and efficiency.

The experimental engine was limited by the engine block's ability to handle higher compression ratios.

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.

High compression ratios aid efficiency, while low ratios enable greater power and torque.

Special higher - flow cylinder heads give the Cobra R greater valve lift and a slightly higher compression ratio of 9.6:1.

From our side, I think the number - one move to allow higher compression ratios will be the development of water injection to reduce combustion temperatures — it's all about controlling knock or pre-ignition.

With the piston which is slightly domed, you'll have a slightly higher compression ratio.

At the same time, Mazda has also worked hard to change its manufacturing methods to permit a very high compression ratio of 13.0:1 to deliver maximum power, good fuel economy, and cleaner combustion.

The Direct Injection Gasoline (DIG) system improves combustion efficiency and performance, and enables the engine to avoid knocking at higher compression ratios, while the multi-point injection mixes fuel and air earlier, enabling complete combustion in the chamber for greater efficiency at low engine loads.

N20B20U0 (2011 — present) is a version with high compression ratio which is up to 11.

These technologies include high compression ratio gasoline engines (13.0 to 1), reduced compression diesel engines (14.0 to 1) with new 2 - stage turbocharger design, highly efficient automatic transmissions, lighter weight manual transmissions, lightweight body designs and electric power steering.

Actually, most of the efficiency of the Skyactiv engine comes from how it manages to reduce intake charge / combustion temperature enabling it to run much higher compression ratio than other engines.

While the compact combustion chamber and higher compression ratio on gasoline engine helps to improve engine efficiency, the advanced thermal management system in diesel engine along with low friction engine oil and modified fuel injection system help diesel engine in faster warm up and lower frictional losses.

At mid-range rpm, the direct injection makes possible a relatively high compression ratio of 10.5:1 to foster crisp acceleration, and some 148 lb - ft of torque is available for a few moments under overboost conditions in throttle transitions.

I believe this is because it can handle higher pressure before detonating, meaning higher compression ratio and \ or more boost is possible.

Second is the big one: A plug - in hybrid system combining a modified, Atkinson cycle version of the 3.6 - liter V6 gasoline engine (it produces 248 hp, 230 lb - ft of torque and has a somewhat higher compression ratio), a 16 - kWh lithium - ion battery and an FCA - patented «electrically variable transmission with dual - motor EV drive capability» (we're eager to learn more about this particular piece of the package).

They accept that higher - octane fuels will allow us to use higher compression ratios to improve combustion efficiency.

@Ukko I agree that the ratio reported is generally not the boosted ratio, I believe the ratio will change when under boost since the amount of air in the cylinder will be greater before compression, hence higher compression ratio.

The two four - cylinder petrol engines are naturally aspirated, they use an extremely high compression ratio of 14:1 instead of turbocharging to achieve both respectable power and fuel economy.

Evolution III August 1995 Power 266bhp @ 6250rpm Torque 228 lb ft @ 3000rpm Weight 1260 kg Evolution Higher compression ratio, new turbo compressor, larger front air dam, deep side skirts, new rear wing

However, the Prius has a pretty high compression ratio (13:1), so it will be more sensitive to low octane fuel than if it were around 11:1 or even 12:1.

To begin with, the turbocharger itself is a twin - scroll unit, chosen over a supercharger and single - scroll unit because its low back pressure is suited to the MX - 5's high compression ratio Skyactiv engine.

Further boosting efficiency, the 1.6 - litre T - GDI engine receives a new high - energy ignition coil, higher - tumble intake ports, a low - friction timing chain and marginally higher compression ratio (from 9.5:0 in the cee'd GT to 10.0:0 in the new Sportage).

[71] Cars with turbocharged engines and high compression ratios often specify premium gas because higher octane fuels reduce the incidence of «knock», or fuel pre-detonation.

Mounted longitudinally (at right angles to the original NSX), the almost square (91 x 89.5 mm) 75 - degree V6 has a usually high compression ratio (10:1) for a turbocharged engine and features a combination of port and direct fuel - injection as well as variable timing on both inlet and exhaust cams.

And the design of both combustion chamber and piston head has resulted in a particularly high compression ratio of 11.5:1, facilitating enhanced combustion for higher performance allied to lower emissions.

The issue is, of course, that the Skyactiv - G engine already has an insanely high compression ratio.

It cranks out a healthy 147 horsepower with a notably high compression ratio of 12.5 — usually that number is 10 or below.

The engine block itself, meanwhile, also comes with new Mahle pistons that can withstand a new higher compression ratio of 10.0:1 and the high turbo boost pressures.

Its twin - turbocharged, V - 6 engine makes more than 360 horsepower and has a fairly high compression ratio.

Mazda's Skyactiv - G engine improves fuel economy with an incredibly high compression ratio.

As far as I know premium fuel is (or was) better suited for engines with higher compression ratios (10:1 or more), since lower octane fuel is more likely to combust before the sparkplug fires.

Only in extreme cases such as very high compression ratios, very low octane fuel or too much ignition advance can it benefit a normally aspirated engine.

I've read gasoline engines use sparks to ignite the mixture, but diesel engines use just compression which can't be done in gasoline engines due to high compression ratios which can cause engine knocking, but if that was true gasoline?

With a much higher compression ratio (13.5:1 versus 12.3:1), freer - flowing intake and exhaust, and more aggressive cams, it shoots 731 hp down the driveshaft.

The bears out to a slightly higher compression ratio (10.6:1 vs 10.0:1) and slightly less torque and a bit more horsepower at a higher point in the rev range.

The engine is undersquare, with an 3.17 - inch bore diameter and 3.48 - inch stroke, and has a relatively high compression ratio of 13.0:1.

A three - door station wagon version, called the «Marajó» in Brazil, was added in September 1980, as was a sporting version of the hatchback called the 1.6 SR (with a mere four more horsepower, achieved by a somewhat higher compression ratio).

Diesel engines have a higher compression ratio than gasoline ones do, and more compression means more power out of the same amount of fuel, she said.

«We are seeing a merging of gasoline and diesel; gasoline engines now have a higher compression ratio, are direct - injected and are often boosted with a turbocharger — all techniques that have been associated with diesel.

The fundamental principle is that while thermal efficiency can be raised by reaching a high compression ratio, achieved through pulsed collisions of multiple high - speed jets of an air - fuel gas mixture at microscopic regions in the central area of a combustion chamber, expanded uses and ranges of application were attained with the further addition of 3 new measures.

Highly turbocharged alcohol - fueled direct - injection spark - ignition (DISI) engines operated at a high compression ratio could be as or more efficient than diesel engines while also providing advantages of lower vehicle cost, lower emissions and higher power, according to a recent modeling study by Leslie Bromberg and Daniel Cohn at MIT.

My assumption is that it probably has to do with the higher compression ratio of the Diesel engine.

If you have a high - performance engine with a high compression ratio or a big turbocharger, often a high - octane fuel is recommended (or even required) in order to produce the maximum amount of power.

You are absolutely right that the high compression ratio is the cause - you end up with a much greater pressure variation in the combustion chamber.

Kia has enhanced the 164 - hp engine with direct injection and a higher compression ratio.