湿式双离合器自动变速箱整车行驶状态检测方法

• Format: Patent
• Language: Chinese
• Published: 19.02.2019
• 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

本发明公开了种湿式双离合器自动变速箱整车行驶状态检测方法，包括步骤S1：根据发动机驱动扭矩、道路阻力扭矩和发动机惯量扭矩计算输出到车轮的扭矩；步骤S2：根据输出到车轮的扭矩计算车辆期望加速度；步骤S3：根据车辆期望加速度和车辆实际加速度确定加速度差值；步骤S4：根据加速度差值确定车辆行驶状态，并根据车辆行驶状态控制变速箱换挡。采用本发明的方法可以准确检测到车辆是在上坡还是在下坡，从而便于离合器提前减挡或者加挡，降低车辆损耗，保证车辆性能，延长车辆使用寿命。 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 inv