Socket module of compression release type engine brake and operating method of engine brake using thereof

A method for operating a compression release engine brake using a socket module provided between an exhaust rocker arm and a valve bridge, where the socket module includes:

• a housing including an inlet, a brake piston mounting portion and a reset member mounting portion, a brake piston, and a reset member, the method comprising:
• a first step in which brake oil is introduced to the brake piston mounting side through the inlet of the housing;
• a second step in which the brake piston descends by hydraulic pressure of the brake oil and thus the exhaust rocker arm rotates in a first direction relative to a rocker arm shaft such that a roller and an exhaust cam of the exhaust rocker arm contact each other;
• a third step in which the exhaust cam contacts a brake cam lobe while rotating and thus the exhaust rocker arm presses the valve bridge while rotating in a second direction relative to the rocker arm shaft such that an exhaust valve is opened;
• and
• a fourth step in which a push pin pushes, with no rotating or sliding motion, a reset valve as the exhaust rocker arm rotates such that an outlet is opened.