Valvetrain with rocker arm housing magnetically actuated latch

A valvetrain for an internal combustion engine of a type that includes a cylinder head, a poppet valve having a seat within the cylinder head, a cam shaft on which is mounted an eccentrically shaped cam, the valvetrain comprising:

• an electromagnetic latch assembly comprising a latch pin translatable between a first position and a second position;
• a rocker arm assembly that abuts the poppet valve and includes a cam follower and a rocker arm;
• and
• a hydraulic lash adjuster providing a fulcrum for the rocker arm;
• wherein the electromagnetic latch assembly further comprises an electromagnet mounted to the rocker arm;
• the rocker arm comprises a spring post, a valve end, and a second end distal from the valve end;
• and
• a slot entering the spring post is formed in one of the valve end and the second end of the rocker arm.

A valvetrain for an internal combustion engine of a type that includes a cylinder head, a poppet valve having a seat within the cylinder head, a cam shaft on which is mounted an eccentrically shaped cam, the valvetrain comprising:

• an electromagnetic latch assembly comprising a latch pin translatable between a first position and a second position;
• a rocker arm assembly that abuts the poppet valve and includes a cam follower and a rocker arm;
• and
• a hydraulic lash adjuster providing a fulcrum for the rocker arm;
• wherein the electromagnetic latch assembly further comprises an electromagnet mounted within a chamber formed by the rocker arm;
• and
• an electrical connection for the electromagnet is formed by one of a spring extending toward the rocker arm, a wire trace formed on the spring, and a wire bound to the spring.