Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control
Reexamination Certificate
2007-08-14
2007-08-14
Zanelli, Michael J. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle subsystem or accessory control
C180S443000
Reexamination Certificate
active
11097131
ABSTRACT:
In a steering system30, a transmission ratio R1which is determined in dependence on the vehicle speed by reference to a transmission ratio decision map is multiplied with a first transmission ratio alteration gain g10which is determined in dependence on the distribution of a traveling drive torque from an engine11to front wheels14and rear wheels15, thereby to alter the ratio R1of steering torque distribution from a steering handle31to the front wheels14, whereby the variation of the steering feeling due to an increase or decrease in the distribution of the traveling drive torque to the front wheels14can be suppressed. Further, the transmission ratio R1is multiplied with a second transmission ratio alteration gain g11which is determined in dependence on the gradient of the road surface by reference to a second transmission ratio alteration map, thereby to alter the transmission ratio R1, whereby the variation of the steering feeling due to the variation of the gradient can also be suppressed.
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Kato Hiroaki
Momiyama Minekazu
Murakami Tsuyoshi
Ohno Akihiro
Takeuchi Shinji
JTEKT Corporation
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Zanelli Michael J.
LandOfFree
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