摘要 |
A degraded mode of operation (figure 7) for a partially automated mechanical transmission system (92) having a splitter-type mechanical transmission (10) wih a splitter section (14) automatically shifted in only certain ratios (ninth/tenth). Upon sensing certain system faults when in this automatic splitter shifting mode, the spllitter section is retained, as is, until main section neutral can be confirmed, a which time the splitter section is returned to manual control for all transmission ratios. |