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Machine translation
1. (WO1978000007) DIRECT INJECTION FUEL SYSTEM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1978/000007    International Application No.:    PCT/US1978/000009
Publication Date: 07.12.1978 International Filing Date: 01.06.1978
IPC:
F02M 47/02 (2006.01), F02M 63/02 (2006.01)
Applicants:
Inventors:
Priority Data:
803144 03.06.1977 US
Title (EN) DIRECT INJECTION FUEL SYSTEM
(FR) SYSTEME D"INJECTION DIRECTE DE CARBURANT
Abstract: front page image
(EN)Injection pressure generated by a suitable flow source (16) and a pressure-flow regulator (28) is carried by a common rail or manifold (20) to each injector valve of an engine. The valves (22) are of the closed differential needle, hydraulic-operated type, opening and closing for the injection period by virtue of hydraulic pressure imbalance and balance exerted on the effective piston areas of the valve needle. Balance conditions are controlled by fuel flow through ports and orifices (72, 74, 78, 102) of electric solenoid-operated sliding spool valves (52) by an engine-driven timer device (38, 40) which controls the start and end of the injection period. Controlled by-pass flow from the spool valves (52) may be collected by a low pressure manifold for return to the reservoir along with the overflow from a high pressure manifold (20).
(FR)La pression d"injection est produite par une pompe (16) et un regulateur de pression (28) et le carburant sous pression est distribue par une tuyauterie commune (20) a chaque valve d"injection d"un moteur. Les valves (22) sont des valves a pointeau du type differentiel, a commande hydraulique, dont l"ouverture et la fermeture, definissant la periode d"injection, sont produites par equilibre ou absence d"equilibre des pressions exercees sur le piston du pointeau. Les conditions d"equilibre sont gouvernees par le debit du carburant a travers les lumieres et orifices (72, 74, 78, 102) de vannes electro-magnetiques a tiroir (52) et par un dispositif temporisateur (38, 40) actionne par un moteur, qui determine le debut et la fin de la periode d"injection. Un courant controle de derivation provenant des vannes (52) peut etre recueilli par une tuyauterie basse pression pour retour au reservoir avec le surplus provenant d"un tuyauterie a haute pression (20).
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)