Sentences with phrase «high compression diesel»

Not exact matches

DIESEL ENGINES - They are higher compression than gasoline engines and do not require spark plugs or distributors.

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.

I was thinking more on the lines of gas engines, but you're right about the need for higher compression ranges for diesel engines.

It can then be put in diesel engines and will ignite properly because diesel engines have high compression ratios, so why can't this be done?

Such high - compression diesels tend to jolt the car a bit when you shut them down.

SkyActiv technology uses techniques such as direct injection, high compression ratios for petrol models (and low compression ratios in diesels), variable valve timing and special exhaust manifolds to improve efficiency and power.

The higher compression ratio in diesels means they are harder to start, but once they are running the energy expended in compressing air is regained during the expansion stroke when the compressed air is allowed to «spring» back, so the higher compression ratio causes negligible engine braking via energy being lost as friction and heat of compressed air to engine block.

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.

Indeed, higher compression ratios and other aspects of the working diesel mean that the engines must be built to a more heavy - duty standard.

While the redesign may not be a complete shock, the 2.2 - liter diesel and other SKYACTIV technologies fitted on the 2013 Mazda6 — lowered engine compression, i - Stop, high - tech transmission, and more rigid, yet lighter, body — should help keep future owners away from the gas pumps a little more often.

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.

As far as higher mileage, high - compression engines develop more power than low CR ones, which will help with mileage, but part of the reason diesels get higher mileage is b / c diesel fuel contains more energy per gallon than gasoline — so there won't be any mileage boost from this aspect.

Additional engine features: Iron cylinder block and aluminum DOHC cylinder head Forged steel crankshaft and connecting rods Oiling circuit that includes a dedicated feed for the turbocharger to provide increased pressure at the turbo and faster oil delivery Piston - cooling oil jets 16.5:1 compression ratio Common rail direct injection fuel system Ceramic glow plugs for shorter heat - up times and higher glow temperatures Balance shaft that contributes to smoothness and drives the oil pump Laminated steel oil pan with upper aluminum section that contributes to engine rigidity and quietness B20 bio-diesel capability The Duramax 2.8 L is the cleanest diesel truck engine ever produced by General Motors, and meets some of the toughest U.S. emissions standards, thanks in part to a cooled exhaust gas recirculation (EGR) system.

The turbo - diesel's compression ratio is nearly as low (14.0:1) as the petrol engine's is high.

Diesels need high compression of about 18:1 to operate efficiently, right?

The SKYACTIV - X combines the benefits of a spark - ignition gasoline engine — expansiveness at high rpms and cleaner exhaust emissions — with those of a compression - ignition diesel engine — superior initial response and fuel economy.

The research vehicle features a homogenous charge compression ignition engine, a technology that produces the high fuel economy of a diesel engine from a clean - burning gasoline engine.

And because of the natural canceling effect of the cylinders being horizontally opposed, Subaru tells us there is no need for a balance shaft to dampen the noise and vibration typically associated with high - compression diesel engines.

But, the atmospheric pressure is sort of high — e.g., a day on Venus is more like spending time atop a piston in a diesel engine at the top of the compression cycle where the fuel mixture explodes!

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.