Vehicle traveling state detecting method of wet double clutch transmission

• Main Authors: HU LIANG, XU RUIXUE, WANG YE, ZHU CHENG, WANG QIMING, MA PEIYI, YIN LIANGJIE, ZHANG YOUHUANG, CHEN JIACHAO
• Format: Patent
• Language: Chinese; English
• Published: 08.09.2017
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; 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; THERMAL INSULATION IN GENERAL; WEAPONS

The invention discloses a vehicle traveling state detecting method of a wet double clutch transmission. The method comprises the steps that S1, torque output to a wheel is calculated according to engine driving torque, road resistance torque and engine inertia torque; S2, an expected accelerated speed of a vehicle is calculated according to the torque output to the wheel; S3, An accelerated speed difference value is determined according to the expected accelerated speed of the vehicle and an actual accelerated speed of the vehicle; and S4, the traveling state of the vehicle is determined according to the accelerated speed difference value, and the transmission is controlled to shift a gear according to the traveling state of the vehicle. By adoption of the method provided by the invention, whether the vehicle goes up or goes down a slope can be accurately detected, accordingly clutches can be shifted down or up conveniently, vehicle loss is reduced, the vehicle performance is guaranteed, and the service life