Lost motion exhaust rocker engine brake system with actuation solenoid valve and method of operation
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United States of America Patent
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Sep 8, 2020
Grant Date -
Oct 10, 2019
app pub date -
Apr 4, 2019
filing date -
Apr 4, 2018
priority date (Note) -
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Abstract
A compression-release engine brake system for effectuating a compression-release engine braking operation of an internal combustion engine. The compression-release system includes a lost motion exhaust rocker assembly including an exhaust rocker arm, an actuation device including an actuation piston and an actuation cavity, and a reset device including a reset check valve and a slider-piston. Hydraulic fluid in the exhaust rocker arm is locked in the actuation cavity when the reset check valve is in the closed position, and flows through the reset check valve when the reset check valve is in the open position. The slider-piston is associated with the reset check valve so that in an extended position of the slider-piston the reset check valve is free to move toward the closed position, and in a retracted position of the slider-piston the reset check valve is moved to the open position thereof by the slider-piston.
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