EP 0285877 B1 19891220 - VALVE CONTROL DEVICE
Title (en)
VALVE CONTROL DEVICE
Publication
Application
Priority
DE 3712020 A 19870409
Abstract (en)
[origin: US4856474A] A valve control device for a cam-shaft controlled exhaust valve of a cylinder of a motor vehicle internal combustion engine with an exhaust cutoff brake wherein an actuator closes a throttle valve in the exhaust of the cylinder to initiate a braking operation, characterized in that a hydraulic valve clearance compensation element is arranged between the cam-shaft and the exhaust valve whereby an adjusting piston is guided in a cylindrical body and is loaded by a return spring and a control element is provided to retain the adjusting piston relative to cylindrical body during braking in the adjusted position respectively reached at the beginning of the braking operation wherein the control element acts upon the hydraulic valve clearance compensation element during braking operation with a force which exceeds or at least corresponds to the force of the return spring of the hydraulic valve clearance compensation element and counteracts the latter.
IPC 1-7
IPC 8 full level
F01L 1/24 (2006.01); F01L 1/245 (2006.01); F01L 13/06 (2006.01); F02D 9/06 (2006.01); F02D 13/04 (2006.01)
CPC (source: EP US)
F01L 1/245 (2013.01 - EP US); F01L 13/06 (2013.01 - EP US); F02D 13/04 (2013.01 - EP US); F01L 2013/0094 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES FR IT NL SE
DOCDB simple family (publication)
EP 0285877 A1 19881012; EP 0285877 B1 19891220; DE 3712020 A1 19881027; DE 3860012 D1 19900125; ES 2012415 B3 19900316; JP H039283 B2 19910208; JP S63263208 A 19881031; US 4856474 A 19890815
DOCDB simple family (application)
EP 88104247 A 19880317; DE 3712020 A 19870409; DE 3860012 T 19880317; ES 88104247 T 19880317; JP 8553088 A 19880408; US 15927088 A 19880223