VALVE TRAIN WITH HYDRAULIC DELAY ELEMENT FOR AN INTERNAL COMBUSTION ENGINE
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United States of America Patent
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Issued Date -
Jun 16, 2022
app pub date -
Mar 27, 2020
filing date -
Mar 27, 2020
priority date (Note) -
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Abstract
The disclosure relates to a valve train for an internal combustion engine and to an internal combustion engine. The valve train has an inlet valve actuation mechanism for the periodic actuation of an inlet valve of the internal combustion engine. The valve train also has a delay element, which is in contact with the inlet valve actuation mechanism and which has a hydraulic chamber for delaying a closing movement of the inlet valve by means of a hydraulic medium. The valve train has a hydraulic feed for feeding the hydraulic medium into the hydraulic chamber, the hydraulic feed having a control shaft, and the control shaft being mechanically driven by the internal combustion engine. The control shaft has an axially extended cavity for the hydraulic medium, and at least one opening for intermittently feeding the hydraulic medium from the cavity to the hydraulic chamber.
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