Automatic transmission based N-gear starting and stopping system control method

• Main Authors: SHI LANPING, YANG JIAN, ZHAO FUQUAN, XU BINKUAN
• Format: Patent
• Language: Chinese; English
• Published: 21.08.2013
• Subjects: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; TRANSPORTING; VEHICLES IN GENERAL

The invention discloses an automatic transmission based N-gear starting and stopping system control method, and aims to provide a control method which is convenient and reliable to implement, capable of effectively improving fuel economy and reducing tail gas emission and applicable to popularization and application. The control method includes steps of 1, enabling an engine to enter N-gear flameout state from operating state after an ignition lock starts the engine and when the engine starts by complying with the following conditions: A, automobile speed is smaller than a threshold value Vf; A1: rotation speed of the engine is larger than the threshold value Fs1; B: an automobile is braked; B1: power vacuum degree of a brake system is larger than the threshold value Zf; C: the transmission is at N gear, residence time of the N gear exceeds the threshold value Tf; and 2, transmitting a 'starting command' to the engine and a starter by the system until the engine is started again after a lock switch ignites an