Four-wheel drive vehicle having front-and rear-wheel engaging mechanism
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United States of America Patent
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Mar 27, 1990
Grant Date -
N/A
app pub date -
Jun 30, 1987
filing date -
Jun 30, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A four-wheel drive vehicle having a front- and rear-wheel engaging mechanism designed to enable differential limiting means provided between the front and rear wheels to be controlled over the range from the direct coupling position to the disengaged position through the slip region by the control of the degree of engagement. The vehicle is provided with engaging means for driving the front- and rear-wheel engaging mechanism at a set degree of engagement, detecting means for detecting a running condition, and control means for setting a degree of engagement to control the engaging means. The control means has reference data concerning degrees of engagement respectively corresponding to various running conditions, and sets a degree of engagement selected from the reference data in accordance with the detected running condition. Thus, it is possible to engage the front- and rear-wheel engaging mechanism in such a manner as to prevent the occurrence of tight corner braking while avoiding slipping.
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