The phrase
"compression ratio" refers to the difference in size between the uncompressed version and the compressed version of something. It tells us how much the original size has been reduced after compression.
Full definition
This increase is due in part to a pair of plugs per cylinder, an
increased compression ratio, an improved cylinder - head port flow, and a new combustion system.
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 cooling jets also allow for a higher
compression ratio for better engine efficiency and faster engine oil warm - up on cold starts, also improving fuel economy.
Direct injection also utilizes a 9.5
compression ratio in this engine, while achieving a best - in - class 133 horsepower - per - liter.
3.3 L / 100 km is really good for a petrol engine, I guess direct injection and a high
compression ratio help.
Due to the
greater compression ratio and the increased weight of the stronger components, starting a diesel engine is harder than starting a gasoline engine of similar design and displacement.
The cooling effect of fuel injected directly into the cylinder allows the incorporation of the power - increasing effects of a higher
compression ratio without engine knocking.
A high
compression ratio gives greater efficiency, but in certain applications poses the risk of premature combustion (knocking).
This is a very simplistic model, as you have factors involved such
as compression ratio, tuning, component strength, and others, to worry about.
It is supposed to indicate the longevity of an engine by reducing the «number» by how fast the engine is able to run and what its
numerical compression ratio.
Vehicle engineers believe the breakthrough in internal combustion technology would come from mastering the
variable compression ratio.
Why will a
lower compression ratio engine push the compression gauge to a higher number than a high performance, high compression engine?
There is no way that a 1 mm increase in bore diameter will
change compression ratio that drastically unless the stroke is changed as well.
The controlled combustion feature enables the engine to run with
higher compression ratio to deliver greater power and efficiency.
An increased
compression ratio of 10.5:1 enables most of the increase in power from the L37 and LD8 Northstars.
Features first production variable compression turbo 2.0 - litre engine that varies piston reach to change
compression ratio between 8:1 and 12:1.
As you no doubt have already hear the car is powered by a 2.0 - liter 4 - cylinder direct - injection boxer engine with a
12.5:1 compression ratio making 200 - hp and 151 lb - ft of torque.
L15B7 Civic Si was a modified L15B7
with compression ratio reduced to 10.3 and boost pressure increased to 20.3 PSI (1.38 bar).
The
10.5:1 compression ratio gives it 355 horsepower and 369 pounds - feet of torque compared to the 4.4 - liter's 315 hp and 324 pounds - feet of torque.
Multivalve engines were just entering the mainstream, and VW's 1.8 - liter was particularly advanced, with a slightly outrageous (for the time)
10.0:1 compression ratio requiring a knock sensor to guard against detonation; hydraulic lifters; sodium - filled exhaust valves; and oil squirters to cool the pistons.
Using the equation presented in this answer, I'm calculating an
effective compression ratio of roughly 17:1, which is scarcely believable.
The addition of gasoline direct injection (GDi) and a higher
compression ratio bumps output on the V6 to 333 hp and 291 lb - ft of torque.
Great, sexy car, not expensive, better performance and its great
compression ratio makes it for me a car I would like to buy.
Allowing its premium Infiniti brand to debut the engine suggests Nissan is preparing to bet big on variable
compression ratio technology, especially in Europe.
ENGINE CAPACITY: 3600cc CYLINDER LAYOUT: Horizontally opposed 6 - cylinders VALVES: 24 valves, 4 - valve heads, DOHC BORE X STROKE: 100 x 76.4
mm COMPRESSION RATIO: 11.7:1 MAXIMUM POWER: 381 bhp at 7400 rpm MAXIMUM TORQUE: 385 Nm at 5000 rpm
Even without direct - injection, the Voodoo V - 8 with its tall
12.0:1 compression ratio V - 8 fires up quickly and idles happily, apparently because the massive throttle body is carefully tapered to flow smoothly even at low rpm.
Anthony DiSomma Racing put together the 363ci engine using an Eagle forged crank and I - beam connecting rods, Diamond pistons, a custom - spec Bullet / Brian «Freezy» Friedentag cam, and a boost - friendly
8.5:1 compression ratio.
My rough calculations indicate that the change in bore will result in a
new compression ratio of 8.66:1 ¹.
It was a higher performance version of the base 350 cu in V8 with casting number 186 2.02 in / 1.60 in valve heads and had an 11:1
compression ratio requiring high octane gas and produced 350 hp (260 kW).
Phrases with «compression ratio»