ELECTRONICALLY CONTROLLED FUEL INJECTION DEVICE

• Main Authors: HASHIMOTO, SHOGO, EHARA, RYOJI, MIZUI, HIROSHI, NICHOGI, TADASHI
• Format: Patent
• Language: English; French; Japanese
• Published: 12.06.2003
• Edition: 7
• Subjects: BLASTING; COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; WEAPONS

An injection nozzle (7) comprises a nozzle holder (25) with an injection hole (25a) and a valve body (29) for opening and closing the injection hole. A circular projecting portion (38) is formed in a position surrounding the injection hole of the nozzle holder. An electronically controlled fuel injection device is provided which can prevent fuel from adhering to tip surfaces of the nozzle holder and of a poppet valve or on the inside wall of an air−intake passage, for example, even under the full load where the inside of the air−intake passage is under low negative pressure. An injection nozzle 7 comprises a nozzle holder 25 with an injection hole 25a and a valve body 29 for opening and closing the injection hole. A circular projecting portion 38 is formed in a position surrounding the injection hole of the nozzle holder. An electronically controlled fuel injection device is provided which can prevent fuel from adhering to tip surfaces of the nozzle holder and of a poppet valve or on the inside wall of an air-intake passage, for example, even under the full load where the inside of the air-intake passage is under low negative pressure. L'invention porte sur une buse (7) d'injection comprenant un dispositif de retenue (25) pourvu d'un trou (25a) et un corps de soupape (29) permettant d'ouvrir et de fermer le trou d'injection. Une partie saillante circulaire (38) est formée dans une position entourant le trou d'injection du dispositif de retenue de la buse. Cet injecteur de carburant électronique permet d'empêcher le carburant d'adhérer aux surfaces terminales du dispositif de retenue de la buse et d'un clapet ou à la paroi intérieure d'un passage d'admission d'air, par exemple, même sous la charge de carburant, l'intérieur du passage d'admission d'air étant sous basse pression négative.