Self-adaptive method for establishing clutch joint point oil pressure of automatic transmission

摘要: The invention relates to a self-adaptive method for establishing clutch joint point oil pressure of an automatic transmission. In the vehicle driving process, when conditions that speed is constant, accelerator constant and gear remains unchanged are simultaneously met, following control operation conducted, specifically, b sequentially wherein a, slip difference OG controlled be target ntar, b, OC filled with oil; |nact-ntar| larger than nthr, instruction Pkp reduced; repeated until smaller or equal at time shifting, in terms value condition nthr nact actual difference; action occurs, lowered Ppi, ntar through PI control. When too high, can appropriately reduced according relationship between difference, so adjustment realized.