Actuation apparatus

An actuation apparatus for actuating a component of a switchable valve train device of an internal combustion engine, the actuation apparatus comprising:

• a shaft;
• an actuation lever mounted on the shaft for pivotal motion of the actuation lever between a first position for actuation of the component and a second position for de-actuation of the component;
• a biasing means configured to urge the actuation lever from the second position towards the first position;
• and
• a reaction member fixed relative to the shaft and against which the biasing means is configured to react so that the biasing means urges the actuation lever towards the first position,
• wherein the apparatus is configured such that, in use, the biasing means is biased when an actuation source moves the actuation lever towards the first position when the component is non-actuatable, such that the biasing means causes the actuation lever to pivot from the second position to the first position, thereby to actuate the component when the component becomes actuatable again.

An actuation apparatus for actuating a component of a switchable valve train device of an internal combustion engine, the actuation apparatus comprising:

• a shaft comprising a first portion defining a first axis and a second portion defining a second axis, the second axis being substantially parallel with and radially offset from the first axis;
• an actuation lever mounted on the shaft for pivotal motion of the actuation lever between a first position for actuation of the component and a second position for de-actuation of the component, wherein the actuation lever is mounted to the second portion of the shaft;
• and
• a biasing means configured to urge the actuation lever from the second position towards the first position,
• wherein the apparatus is configured such that, in use, the biasing means is biased when an actuation source moves the actuation lever towards the first position when the component is non-actuatable, such that the biasing means causes the actuation lever to pivot from the second position to the first position, thereby to actuate the component when the component becomes actuatable again.