| http://www.w3.org/ns/prov#value | - Accordingly, there is a need for a common rail system that may be used for engine braking and EGR that does not suffer from the disadvantages that accompany the use of high pressure fluid for common rail actuation. [0009] A second significant challenge that arises from the use of common rail systems for engine valve actuation is the potential for failure of the system.
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