EP 0509261 B1 19940817 - Emergency cut-out device for an internal combustion engine.
Title (en)
Emergency cut-out device for an internal combustion engine.
Title (de)
Notabstellvorrichtung für eine Brennkraftmaschine.
Title (fr)
Dispositif de sécurité pour arrêter un moteur à combustion interne.
Publication
Application
Priority
DE 4112689 A 19910418
Abstract (en)
[origin: EP0509261A2] The invention relates to an emergency cut-out device for internal combustion engines for returning the control rods (7) of injection pumps (6) to zero delivery when, due to a defect, filling control by the means provided is no longer possible. For this purpose a shaft (3) with two shaft sections (4, 5) is provided in the linkange between control element (1) and control rod (7), which shaft sections in normal operation are connected to one another by a torsionally rigid coupling (9) and are set in rotational movement by the control pulses of the control element (1). In the event of a fault, the coupling (9) is detached by axial separation of the coupling halves assigned to the two shaft sections (4, 5). An axial piston (20), to which pressure medium can be admitted and which is movable against the force of a spring (17) acting on the coupling (9) in the longitudinal direction of the shaft (3), serves for this purpose. In addition the shaft section (5) on the control rod side is equipped with a rotary piston (24) to which, in order to return the control rod (7) to zero delivery, pressure medium can be admitted. It is especially advantageous that the installation of the emergency cut-out device in the transmission path between control element (1) and control rod (7) does not increase the power received from the control element (1) in normal operation, which gives a good control capability. The design of the device with a shaft (3) and hydraulically actuated elements permits a simple construction with a single coupling (9) for low-backlash transmission of the control pulses. <IMAGE>
IPC 1-7
IPC 8 full level
F02D 1/02 (2006.01); F02D 1/10 (2006.01); F02D 11/06 (2006.01); F02D 17/04 (2006.01); F02M 63/02 (2006.01); F15B 15/04 (2006.01); F15B 15/06 (2006.01); F16K 1/10 (2006.01); F02D 9/02 (2006.01)
CPC (source: EP)
F02D 1/10 (2013.01); F02D 17/04 (2013.01); F02M 63/022 (2013.01); F02D 2009/0255 (2013.01)
Designated contracting state (EPC)
AT CH FR GB IT LI
DOCDB simple family (publication)
EP 0509261 A2 19921021; EP 0509261 A3 19930407; EP 0509261 B1 19940817; AT E110139 T1 19940915; DE 4112689 C1 19920130; JP 2766581 B2 19980618; JP H0586916 A 19930406
DOCDB simple family (application)
EP 92104730 A 19920319; AT 92104730 T 19920319; DE 4112689 A 19910418; JP 7440792 A 19920330