EP 0432402 B1 19921223 - INJECTION DEVICE FOR SELF-IGNITION INTERNAL COMBUSTION ENGINES
Title (en)
INJECTION DEVICE FOR SELF-IGNITION INTERNAL COMBUSTION ENGINES
Publication
Application
Priority
DE 3937918 A 19891115
Abstract (en)
[origin: US5054445A] The invention relates to a fuel injection system for self-ignition internal combustion engines. The noise reduction of Diesel engines requires new injection systems. According to the invention a pre-injection and a main injection is achieved by employing to injection lines of different lengths. The difference in length is selected such that the time difference of the pressure waves for travelling the respective lengths corresponds to the desired time delay between the pre-injection and the main injection. In order to account for the compressibility of the fuel both injection lines are maintained at a standing pressure. The hydraulic effect of the injection lines on each other is prevented by check valves and by-pass valves. The controlled injection significantly reduces the combustion noise.
IPC 1-7
IPC 8 full level
F02M 45/02 (2006.01); F02M 45/00 (2006.01); F02M 45/04 (2006.01); F02M 45/06 (2006.01); F02M 45/08 (2006.01); F02M 55/02 (2006.01); F02M 59/36 (2006.01); F02M 61/20 (2006.01); F02B 3/06 (2006.01)
CPC (source: EP US)
F02M 45/04 (2013.01 - EP US); F02M 45/08 (2013.01 - EP US); F02M 55/02 (2013.01 - EP US); F02M 59/366 (2013.01 - EP US); F02M 61/205 (2013.01 - EP US); F02B 3/06 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES FR GB IT SE
DOCDB simple family (publication)
US 5054445 A 19911008; DE 3937918 A1 19910516; DE 59000661 D1 19930204; EP 0432402 A1 19910619; EP 0432402 B1 19921223; ES 2038474 T3 19930716; JP H03222857 A 19911001; RU 2011882 C1 19940430
DOCDB simple family (application)
US 61226290 A 19901109; DE 3937918 A 19891115; DE 59000661 T 19901011; EP 90119503 A 19901011; ES 90119503 T 19901011; JP 30732190 A 19901115; SU 4831537 A 19901114