Engine supercharge control method and device

• Main Authors: WANG YINGJIE, HUI ZHAOCHEN, LIU JUN, ZHU HAOJIE, MU FANGYING, ZHANG YAZHOU, YE ZHIWEI, CHEN YOUXIANG, ZHANG YINGBING, WANG YOUCHENG, OUYANG CAIYUN, ZHANG CHAO, YANG LINQIANG
• Format: Patent
• Language: English
• Published: 11.11.2015
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

The invention discloses an engine supercharge control method and a device. The method comprises the steps of: (1) acquiring the rotating speed and the torque of an engine in real time; (2) judging if the rotating speed of the engine is in a first rotating speed range; (3) if so, acquiring a pressure value P1 in an outlet of an air filter and a pressure value P3 in an outlet of a turbocharger; (4) judging if the P3 is equal to n*P1; (5) if not, calculating the actual pressure change rate in the outlet of the turbocharger in the unit time; and (6) obtaining a calibrated pressure value P in the outlet of the turbocharger and calculating a theoretical pressure change rate according to the rotating speed signal and the torque of the engine if the actual pressure change rate is unequal to 0; and opening an electronic supercharger if the pressure value P3 in the outlet of the turbocharger is lower than the calibrated pressure value P and the actual pressure change rate is lower than the theoretical pressure change rate. The method effectively enhances the dynamic response time and the acceleration performance of whole vehicle.