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本文主要介绍了美国Allison公司的HD4070PR大功率液力机械自动变速器(AT)的结构原理,通过试验方法分析了该变速器自动升挡过程的控制策略,对开展重型车辆液力机械自动变速的研究具有一定的借鉴作用。
This paper mainly introduces the structure principle of Allison’s HD4070PR high-power hydraulic automatic transmission (AT) in the United States, and analyzes the control strategy of the automatic upshift process of the transmission through the test method. The research on the automatic transmission of heavy machinery hydraulic machinery has A certain reference.