Internal combustion engine provided with double system of fuel injection

• Main Authors: SAKAI MITSUTO, NISHIGAKI MASATO, SHIMOJIKKOKU YUKIO, MIYAZAKI KAZUMA, IWAMI YUTAKA
• Format: Patent
• Language: Chinese; English
• Published: 31.08.2011
• Subjects: BLASTING; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; WEAPONS

A double system of fuel injection type internal combustion engine includes: a direct injection injector and a port fuel injection injector; a control unit for changing an fuel injection distribution ratio of fuels injected from these injectors; a delivery pipe connected to the direct injection injector so as to supply the fuel to the direct injection injector; a high pressure fuel pump for supplying the fuel under pressure to the direct injection injector through the delivery pipe; a fuel pressure sensor and a fuel temperature sensor for detecting a fuel pressure and a fuel temperature in thedelivery pipe; and a fuel regulating unit for regulating the fuel pressure and fuel temperature in the delivery pipe. At a time when the fuel injection distribution ratio of the port fuel injection injector is higher than that of the direct injection injector and at least one of the fuel pressure value and fuel temperature value exceeds over an aimed value, the control unit controls the fuel regulating unit so as to lower