Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun The collective
mechanisms andparts that control the operation of thevalves in aninternal combustion engine .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
Support

Help support Wordnik (and make this page ad-free) by adopting the word valvetrain.
Examples
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The SkyActiv program also includes lightening of the reciprocating parts (forged steel pistons, rods, crank), as well as reducing frictional losses (roller-rocker valvetrain) and parasitic losses.
Mazda3 Really Moves the Needle (Not the Gas One) Dan Neil 2012
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The springs are components in the engine valvetrain and are compressed by rocker arms.
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The 3.5-liter V6, the volume engine, gains variable valvetrain timing for a horsepower boost to 285 plus claimed fuel economy improvements.
2010 Chicago Auto Show: 2011 Ford Edge "Ecoboasts" more power, mpg 2010
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The 3. 5-liter V6, the volume engine, gains variable valvetrain timing for a horsepower boost to 285 plus claimed fuel economy improvements.
2010 Chicago Auto Show: 2011 Ford Edge "Ecoboasts" more power, mpg 2010
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Direct-acting mechanical bucket DAMB valvetrain with polished buckets to reduce friction and improve fuel economy
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The 3. 7-liter Ti-VCT all-aluminum DOHC V6 features lightweight aluminum as opposed to an iron block for weight savings and twin independent variable camshaft timing to allow for adjustments to the valvetrain in microseconds.
WN.com - Articles related to Chrysler spends $300M to build new transmissions 2010
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The 3. 7-liter Ti-VCT all-aluminum DOHC V6 features lightweight aluminum as opposed to an iron block for weight savings and twin independent variable camshaft timing to allow for adjustments to the valvetrain in microseconds.
WN.com - Articles related to Chrysler spends $300M to build new transmissions 2010
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Both the Edge 3. 5-liter V-6 and Edge Sport 3. 7-liter V-6 use advanced engine valvetrain technology (Twin Independent Variable Camshaft Timing, or Ti-VCT) and clever control strategies to increase horsepower and torque to best-in-class levels.
Autoblog Michael Harley 2010
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The 3. 7-liter Ti-VCT all-aluminum DOHC V6 features lightweight aluminum as opposed to an iron block for weight savings and twin independent variable camshaft timing to allow for adjustments to the valvetrain in microseconds.
WN.com - Articles related to Chrysler spends $300M to build new transmissions 2010
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The 3. 7-liter Ti-VCT all-aluminum DOHC V6 features lightweight aluminum as opposed to an iron block for weight savings and twin independent variable camshaft timing to allow for adjustments to the valvetrain in microseconds.
WN.com - Articles related to Chrysler spends $300M to build new transmissions 2010
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