High-pressure common-rail fuel injection system and control method thereof

• Main Authors: LIU CHENG, DENG FEI, LONG MEIBIAO, TAN SIXI, OUYANG LINGXIANG, HUANG MINBEI
• Format: Patent
• Language: Chinese; English
• Published: 18.05.2021
• 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

The invention discloses a high-pressure common-rail fuel injection system. The high-pressure common-rail fuel injection system comprises a mechanical fuel injector and further comprises a high-pressure fuel rail, a one-way valve, an electromagnetic valve, a fuel supply pump, a pressure limiting valve and an ECU, and the electromagnetic valve is correspondingly connected with the high-pressure fuel rail, the mechanical fuel injector and the one-way valve; the one-way valve is connected with a fuel tank; and the high-pressure fuel rail is further connected with the fuel tank through the fuel supply pump and the pressure limiting valve, a rail pressure sensor is arranged on the high-pressure fuel rail and is in signal connection with the ECU through wire harnesses, and the ECU is in control connection with the electromagnetic valve and the fuel supply pump through wire harnesses. The invention further discloses a control method based on the high-pressure common-rail fuel injection system. By reasonably matching