| abstract |
Present disclose provides " vehicle and vehicle start methods ".A kind of vehicle includes speed changer, friction brake and controller.The speed changer has clutch, and the clutch is configured to torque being transmitted to driving wheel from the input terminal of the speed changer.The controller is programmed to the application of the friction brake in response to causing the vehicle to remain static, and separates the clutch to establish the neutral position state of the speed changer.The controller is also programmed to, and in response to making the order of the vehicle start when the speed changer is in the neutral position state, engages the clutch.The controller is also programmed to, and is more than rollback threshold value between the clutch engagement in response to estimated wheel torque, is discharged the friction brake.The wheel torque is based on estimating clutch torque, and the estimating clutch torque is based on clutch pressure and transmission input torque. |