论文部分内容阅读
液力变矩器通常在工作腔充满油液的情况下工作,然而当变矩器工作腔为部分充液时,变矩器的输出特性与全充液量时相比有很大的不同。分析了变矩器部分充液的工作机理,给出了实现变矩器部分充液的方法。通过假设变矩器腔内油液等厚分布得到了充液方程,以一元束流理论为基础建立了变矩器部分充液的静态数学模型。采用LB46型液力变矩器为基型作计算仿真,得出了液力变矩器部分充液输出特性。变矩器在部分充液工作状态时静态特性曲线整体上有不同程度的下降,并趋于平缓,尤其在反转制动工况降幅较大,已接近恒力矩,这使得变矩器部分充液特性本身已经可以用来实现近似恒力矩控制,为设计和分析部分充液液力控制系统提供了理论基础,拓展了其应用领域。
Torque converter usually work in the case of the working chamber filled with oil, however, when the torque converter working chamber is partially filled with liquid, the output characteristics of the torque converter is very different from the full charge. The working mechanism of the part of the torque converter filled with liquid was analyzed, and the method of filling the part of the torque converter was given. The fluid filling equation is obtained by assuming the equal thickness distribution of the fluid in the torque converter cavity. Based on the theory of the unary beam current, a static mathematical model of the torque converter partially filled with liquid is established. Using LB46 hydraulic torque converter as a base for calculation and simulation, the hydraulic torque converter part of the liquid-filled output characteristics. The static characteristic curve of the torque converter in the partial liquid-filled working state generally has different degrees of decline, and tends to be gentle, especially in the case of reversing braking, a large drop has been approached to the constant torque, which makes the torque converter partially charge The liquid properties themselves can be used to achieve approximate constant torque control, which provides a theoretical basis for the design and analysis of some liquid-filled hydraulic control systems and expands the field of application.