US Patent:
20050087171, Apr 28, 2005
International Classification:
F02D009/06
Abstract:
A vehicle engine brake has a body in which an internal passageway is defined and a valve member movably positioned within the passageway to selectively restrict flow through the passageway. The valve member is movable between at least first and second positions. In the first position, the valve member blocks a substantial portion of the internal passageway, thereby restricting exhaust gas flow through the engine brake in a flow direction. In the second position, the valve member allows flow through the passageway and past the valve member without substantial restriction.