EGR exhaust gas flow calculation method and related device

• Main Authors: ZHANG CHEN, DOU ZHANCHENG, ZHANG ZHENGZHENG, YAO WANG, ZHAO FEI, ZHAO LIANHAI, LUAN JUNSHAN
• Format: Patent
• Language: Chinese; English
• Published: 23.07.2024
• Subjects: BLASTING; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

The EGR exhaust gas flow calculation method and the related device are applied to an EGR system, under the preset steady-state working condition, the first pressure difference and the second pressure difference of an EGR valve under all opening degrees are determined, the first pressure difference is the pressure difference of an EGR cooler under the non-blocking working condition, and the second pressure difference is the pressure difference of the EGR cooler under the full-blocking working condition; based on the first pressure difference and the second pressure difference, the blocking coefficient of each opening degree for the EGR cooler under the preset steady-state working condition is calculated; under the preset steady-state working condition, the total blockage coefficient of the EGR cooler is determined on the basis of all the blockage coefficients; a target flow function is determined for the total clogging coefficient, and an exhaust gas flow of the EGR system is calculated based on the total clog