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Engine Braking with Lashless Valve Trains

Engine Braking with Lashless Valve Trains Engines D E V E L O P M EN T E n gi n E S Engine Braking with Lashless Valve Trains © Hanna_photo | iStock.com / narvikk | iStock.com / shauni | iStock.com / Maksym Dragunov | iStock.com / Jacobs Vehicle Systems, Inc. Until now, hydraulic valve lash adjusters could not be used in Lashless valve train systems, utilizing technologies such as automatic heavy-duty diesel engines in combination with an additional or Hydraulic Lash Adjusters (HLAs), engine brake, as the engine brake causes significant valve lash FIGURE 1, to maintain zero-clearance between the mechanisms to intake during the braking process. The hydraulic compensation ele- and exhaust valves, have been ubiqui- ments automatically readjust to take up this play, thereby pre- tous in passenger car gasoline engines venting correct seating at the end of the cycle. Jacobs Vehicle and light-duty diesel applications for decades. For applications like medium Systems has now developed systems that enable the integration (MD) and heavy-duty (HD) diesel that of an engine brake in valve trains with hydraulic lash adjusters. require the use of dedicated engine brakes to aid in downhill control, lash- less systems were simply not compatible. A conventional engine brake in http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png ATZoffhighway worldwide Springer Journals

Engine Braking with Lashless Valve Trains

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Publisher
Springer Journals
Copyright
Copyright © Springer Fachmedien Wiesbaden GmbH, part of Springer Nature 2021
eISSN
2524-8774
DOI
10.1007/s41321-021-0408-4
Publisher site
See Article on Publisher Site

Abstract

Engines D E V E L O P M EN T E n gi n E S Engine Braking with Lashless Valve Trains © Hanna_photo | iStock.com / narvikk | iStock.com / shauni | iStock.com / Maksym Dragunov | iStock.com / Jacobs Vehicle Systems, Inc. Until now, hydraulic valve lash adjusters could not be used in Lashless valve train systems, utilizing technologies such as automatic heavy-duty diesel engines in combination with an additional or Hydraulic Lash Adjusters (HLAs), engine brake, as the engine brake causes significant valve lash FIGURE 1, to maintain zero-clearance between the mechanisms to intake during the braking process. The hydraulic compensation ele- and exhaust valves, have been ubiqui- ments automatically readjust to take up this play, thereby pre- tous in passenger car gasoline engines venting correct seating at the end of the cycle. Jacobs Vehicle and light-duty diesel applications for decades. For applications like medium Systems has now developed systems that enable the integration (MD) and heavy-duty (HD) diesel that of an engine brake in valve trains with hydraulic lash adjusters. require the use of dedicated engine brakes to aid in downhill control, lash- less systems were simply not compatible. A conventional engine brake in

Journal

ATZoffhighway worldwideSpringer Journals

Published: Mar 19, 2021

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