compression ratio


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compression ratio

n.
In an internal-combustion engine, the ratio of the volume of the combustion chamber measured before and after a compression stroke.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

compression ratio

n
(Automotive Engineering) 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
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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References in periodicals archive ?
A multi-link system continuously raises or lowers the pistons' reach to transform the compression ratio. High compression ratios aid efficiency, while low ratios enable greater power and torque.
The VC-Turbo engine is able to intelligently switch between compression ratios of 8:1 (for power) and 14:1 (for efficiency) in just over a second.
This subsection discusses the effect of screw compression ratio on the plastication process.
Roland Krueger, chairman and global president of Infiniti, said: "Strong global demand for our new QX50 reinforces its compelling value proposition - stunning design inside and out, equipped with a host of driver assistance technologies and the world's first variable compression ratio engine."
The QX50 appeals to buyers who require the Turbo engine adjusts its compression ratio to optimize power and efficiency.
Therefore, it is feasible to use a feed-forward control on in-cylinder pressure to enhance the robustness of the compression ratio control system.
By increasing the stroke of the engine (distance the piston travels), or decreasing the volume of the combustion chamber, the compression ratio will increase.
It will achieve a better peak signal to noise ratio PSNR while keep ing a good compression ratio.
Power comes from INFINITI's unique VC-Turbo technology, suggesting the future application of variable compression ratio engines across a range of INFINITI models.
Figure 4 shows an example of the temperature contour maps of an electronic package with thermal gap pad applications, as shown in Figure 2, for a compression ratio of 0%.
It can be concluded that the adhesive interface has a good bonding condition with a truss connector under 0.1 axial compression ratio, which is in agreement with the experimental observations.