Actuator arrangement

An actuator arrangement for controlling a first latching arrangement of a first dual body rocker arm for controlling an intake valve of an internal combustion engine, and for controlling a second latching arrangement of a second dual body rocker arm for controlling an exhaust valve of the internal combustion engine, the first and second dual body rocker arms each comprising a first body, a second body, and the respective first or second latching arrangement controllable to latch and unlatch the first body and the second body, the actuator arrangement comprising:

• an actuation source;
• and
• an actuation transmission arrangement configured to transmit movement of the actuation source to both the first latching arrangement and the second latching arrangement,
• wherein, in use, movement of the actuation source is configured to cause, via the actuation transmission arrangement, control of the first latching arrangement and of the second latching arrangement in common,
• wherein the actuation transmission arrangement comprises:
• a first shaft comprising at least one first cam configured to control the first latching arrangement;
• and
• a second shaft comprising at least one second cam configured to control the second latching arrangement,
• wherein the actuation source is common to the first shaft and the second shaft, and
• wherein, in use, a rotation of the actuation source is configured to cause the first shaft and the second shaft to rotate, thereby to change an orientation of the at least one first cam and the at least one second cam relative to the first latching arrangement and the second latching arrangement respectively, so as to control the first latching arrangement and the second latching arrangement in common.