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WHAT DOES COMPRESSION RATIO MEAN IN ENGLISH?
The compression ratio of an internal-combustion engine or external combustion engine is a value that represents the ratio of the volume of its combustion chamber from its largest capacity to its smallest capacity. It is a fundamental specification for many common combustion engines. In a piston engine, it is the ratio between the volume of the cylinder and combustion chamber when the piston is at the bottom of its stroke, and the volume of the combustion chamber when the piston is at the top of its stroke. For example, a cylinder and its combustion chamber with the piston at the bottom of its stroke may contain 1000 cc of air. When the piston has moved up to the top of its stroke inside the cylinder, and the remaining volume inside the head or combustion chamber has been reduced to 100 cc, then the compression ratio would be proportionally described as 1000:100, or with fractional reduction, a 10:1 compression ratio. A high compression ratio is desirable because it allows an engine to extract more mechanical energy from a given mass of air-fuel mixture due to its higher thermal efficiency.
Definition of compression ratio in the English dictionary
The definition of compression ratio in the dictionary is the ratio of the volume enclosed by the cylinder of an internal-combustion engine at the beginning of the compression stroke to the volume enclosed at the end of it.
The translations of compression ratio from English to other languages presented in this section have been obtained through automatic statistical translation; where the essential translation unit is the word «compression ratio» in English.
List of principal searches undertaken by users to access our English online dictionary and most widely used expressions with the word «compression ratio».
FREQUENCY OF USE OF THE TERM «COMPRESSION RATIO» OVER TIME
The graph expresses the annual evolution of the frequency of use of the word «compression ratio» during the past 500 years. Its implementation is based on analysing how often the term «compression ratio» appears in digitalised printed sources in English between the year 1500 and the present day.
Examples of use in the English literature, quotes and news about compression ratio
10 ENGLISH BOOKS RELATING TO «COMPRESSION RATIO»
Discover the use of compression ratio in the following bibliographical selection. Books relating to compression ratio and brief extracts from same to provide context of its use in English literature.
As implied in Section 6.2.1, the hearing aid acts in an increasingly linear manner
when the intensity fluctuations become increasingly rapid. That is, for rapidly
changing signals, the effective compression ratio is less than the static
Harvey Dillon, 2012
JPEG2000 Standard for Image Compression: Concepts, ...
1.6.1 Compression Ratio and Bits per Sample The most popular metric of
performance measure of a data compression algorithm is the compression ratio.
It is defined as the ratio of the number of bits to represent the original data to the
Tinku Acharya, Ping-Sing Tsai, 2005
Internal Combustion Engines
Compression Ratio (C.R.) • When compression ratio increases from 5 : 1 to 10 : 1
the cylinder's compression pressure increases from 8.0 bar to 19.0 bar
respectively (Fig. 5.14). Correspondingly, the maximum cylinder pressure
increases from ...
R.K. Rajput, 2005
How to Build a Harley-Davidson Torque Monster
Stock advertised mechanical compression ratio is 9:1. The actual mechanical
compression ratio of the stock Sportster, with the stock 0.050-inch head gasket is
8.8:1, and the more important corrected compression ratio is only 8.1:1. It's easy
Gas Pipeline Hydraulics
considerably with the compression ratio. Since the throughput capacity of a gas
pipeline decreases with gas temperature, we must find a way to reduce the high
gas temperature resulting from gas compression. In previous chapters, we solved
E. Shashi Menon, 2005
An introduction to thermodynamics
Determine the compression ratio, the cut-off ratio, the work done/kg air and the
thermal efficiency of the cycle. 9.36 In an air-standard Diesel cycle, the minimum
temperature and pressure are 300 K and 100 kPa, respectively. The maximum ...
Y. V. C. Rao, 2004
How to Build and Modify Chevrolet Small-Block V-8 Cylinder Heads
Although it's not necessary to know the bore size to 0.0001 in. when calculating
the compression ratio, it is necessary to know it to at least within a few
thousandths of an inch. Also, if you are working with an old block, it is necessary
to measure ...
Parallel, distributed, and pervasive computing
The compression ratio is high when the trie size is selected to be relatively small.
We justify our idea with small size trie and then pick the size with best
performance in further experiment using larger trie size. We test the overall
A. R. Hurson, Marvin Zelkowitz, 2005
Increasing the clearance volume, decreases the compression ratio and reduces
thermal efficiency. Refer to Fig. 11.1. In this figure, the effect of supercharge
Power 23456 Ratio of Supercharge — •• Fig. 11.1 Effect of Supercharge Ratio on
Four-stroke Performance Tuning
Obviously such a motor, while operating on a theoretical compression ratio of 14:
1, will, in fact, have a true compression ratio of only 7:1. As the average racing
motor operates at approximately 93% volumetric efficiency, the theoretical ...
A. Graham Bell, 1998
10 NEWS ITEMS WHICH INCLUDE THE TERM «COMPRESSION RATIO»
Find out what the national and international press are talking about and how the term compression ratio is used in the context of the following news items.
Exclusive photos of the Murder Nova! Its Twin Turbo Big Block …
With a 9.3:1 compression ratio and spooling 42 pounds of boost (though he can turn it up more than that), the Murder Nova runs on 116-octane ... «Hot Rod Network, Jul 15»
The new sheriff in town: the 2ZZ-GE
Bore and stroke was changed to 82mm x 85mm allowing the engine to safely rev over 8000RPM. Compression ratio was increased to 11.5:1. «The Daily Star, Jul 15»
The first ever four door car of Scion: 2016 Scion iA – a short review
... produces 106 horsepower at 6000 rpm and 103 lb-ft of torque at 4000 revs along with direct injection and a 12.0:1 compression ratio. «Young Herald, Jul 15»
What Video Format Supports 8K Resolution
According to developer Moving Picture Experts Group (MPEG), HEVC delivers data compression ratio twice over H.264 leading to an optimized ... «Engadget, Jul 15»
GM Vortec 8100: The 454's Forgotten Big Brother
Fully CNC-machined 107cc combustion chambers bring compression ratio to 10:1 (9:1 is stock). Extra-thick 5/8-inch cylinder head decks ... «Hot Rod Network, Jul 15»
New car road test: Toyota Aygo x-cite
The unit has been re-engineered to run with a higher 11.5:1 compression ratio and has an improved combustion chamber design for better ... «ChronicleLive, Jul 15»
2015 Mazda CX-5 2.5L AWD Sport
The engine is efficient too, thanks to direct injection and a high compression ratio. It even conforms to Euro 4 emissions standards. A 6-speed ... «The Manila Times, Jul 15»
Beautiful Ferrari 348 Spider for sale
The F119H engine got a bump in compression ratio up to 10.8:1 vs the F119D & F119G 10.4:1 compression ratio, taller intake plenums, fuel ... «North Denver News, Jul 15»
HDR lightmap compression
I think I can use two DXT5 texture to compress the xy and zw components separately with 1 to 2 compression ratio. Is this the way to go? «GameDev.net, Jul 15»
Sporting Sprint 150 true to Vespa's style
... while other mechanical elements like a 10.7:1 compression ratio and a single-overhead-cam cylinder head featuring two 20mm inlet valves ... «Stuff.co.nz, Jul 15»
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