EP 0282508 B1 19910306 - FUEL INJECTION DEVICE FOR A DIESEL INTERNAL COMBUSTION ENGINE WITH PREINJECTION
Title (en)
FUEL INJECTION DEVICE FOR A DIESEL INTERNAL COMBUSTION ENGINE WITH PREINJECTION
Publication
Application
Priority
CH 361786 A 19860909
Abstract (en)
[origin: WO8802066A1] An injection pump (3) is driven by a drive system (27) with an axial piston (28). The drive system (27) is connected to a first control unit (38) provided with a main and secondary slide valve. The pressure medium of the drive system (27) is not in physical contact with the fuel circuit. Control pistons on the first control unit are connected with discharge drillings (11, 12) in the cylinder (4) of the pump (3) as well as with a second control unit (50). Annular spaces (18, 19, 20) opening into the pumping chamber (6) are provided on the piston body (7) of the pump (3). The annular spaces (18, 19, 20) co-operate with discharge drillings (11, 12) and are provided with control edges. At least one of these annular spaces causes the interruption of the injection of fuel via the nozzle (1). Several valves (51, 53) of the second control unit (50) regulate the pressure in the pump chamber (6) and control fuel admission and delivery. Pressure surges occurring at the discharge drillings (11, 12) cause actuation movements in the first and second control units (38, 50).
IPC 1-7
IPC 8 full level
F02M 45/06 (2006.01); F02M 59/10 (2006.01); F02M 59/20 (2006.01); F02B 3/06 (2006.01)
CPC (source: EP KR US)
F02M 45/06 (2013.01 - EP KR US); F02M 59/10 (2013.01 - KR); F02M 59/105 (2013.01 - EP US); F02M 59/20 (2013.01 - EP KR US); F02B 3/06 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 8802066 A1 19880324; AT E61449 T1 19910315; CH 671073 A5 19890731; CN 1010335 B 19901107; CN 87106778 A 19880608; DE 3768490 D1 19910411; EP 0282508 A1 19880921; EP 0282508 B1 19910306; FI 882145 A0 19880506; FI 882145 A 19880506; JP H01500844 A 19890323; JP H0681934 B2 19941019; KR 880701825 A 19881105; KR 940011343 B1 19941205; PL 157237 B1 19920529; PL 267641 A1 19880804; US 4878471 A 19891107
DOCDB simple family (application)
CH 8700112 W 19870904; AT 87905421 T 19870904; CH 361786 A 19860909; CN 87106778 A 19870908; DE 3768490 T 19870904; EP 87905421 A 19870904; FI 882145 A 19880506; JP 50504487 A 19870904; KR 880700508 A 19880507; PL 26764187 A 19870908; US 21049388 A 19880708