发明名称 |
Automatic range shift for multi-speed transmission |
摘要 |
<p>A system for automatically effecting a range shift between high and low ranges in a multi-speed transmission includes a control that monitors the output speed of both the engine and the transmission. The ratio of the two speeds is compared to available ratios in a look-up table such that the control is constantly determining the engaged gear. In one embodiment, a driver provides an intention of the next gear to be selected to the control. Should the intended gear shift require a range shift from thee engaged gear, the control actuates the range shift once the transmission has been moved to neutral. In a second embodiment, no driver intention is provided to the controller. Instead, the control compares the engine output speed to threshold values. If the threshold values predict a gear shift that would require a range shift to be effected from the currently engaged gear, then the range shift will be effected once the transmission has been moved to neutral.</p> |
申请公布号 |
AU713291(B2) |
申请公布日期 |
1999.11.25 |
申请号 |
AU19960066378 |
申请日期 |
1996.07.25 |
申请人 |
MERITOR HEAVY VEHICLE SYSTEMS, LLC |
发明人 |
CHARLES E. ALLEN JR.;FRANK A. PALMERI;THOMAS DESAUTELS;JON M. HUBER |
分类号 |
B60W10/06;B60W10/11;B60W10/111;B60W30/19;F16H59/46;F16H59/70;F16H61/02;F16H61/04;F16H61/682;F16H61/70;F16H63/44;F16H63/50;(IPC1-7):F16H63/44;B60K41/08 |
主分类号 |
B60W10/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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