CAMSHAFT AND VALVE ACTUATION MECHANISM OF ENGINE
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United States of America
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Issued Date -
Jun 30, 2022
app pub date -
May 15, 2020
filing date -
May 15, 2020
priority date (Note) -
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Abstract
This invention is a camshaft and a valve actuation mechanism of an engine. The camshaft includes a first cam and a second cam that are adjacently arranged for an intake or exhaust rocker arm. A flange is arranged between the two cams, and is positioned at a position with a lift of the first cam and the second cam. No flange is arranged in a B section where both of the cams are base circles. When the rocker arm roller is shifted to another cam, since blocking of the flange between the two cams, shifting may be performed when the camshaft is rotated to a position where both of the cams are base circles, which ensures reliability. In addition, one solenoid may control a plurality of actuators, and thus the cost is low. The two cams may implement the functions of the engine, such as, variable valve or engine brake or others.
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