Motor vehicles – Having four wheels driven – With differential means for driving two wheel sets at...
Reexamination Certificate
2005-06-21
2005-06-21
Lerner, Avraham (Department: 3611)
Motor vehicles
Having four wheels driven
With differential means for driving two wheel sets at...
C180S245000
Reexamination Certificate
active
06907953
ABSTRACT:
An ECU, which functions as a driving force distribution control apparatus for a four-wheel drive vehicle, includes a CPU. The CPU controls a coupling for changing torque distribution of front and rear wheels. The CPU determines either of first and second torque distribution modes based on detection signals of a throttle opening sensor and steering angle sensor, which are operating parameters. In the second torque distribution mode, torque is distributed to the front and rear wheels more equally than in the first torque distribution mode. The CPU sets a duration for the second torque distribution mode when the second torque distribution mode is selected. Until the duration elapses, regardless of the operating parameters, the CPU continues the control of the coupling in the second torque distribution mode.
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Murakami Tsuyoshi
Ohno Akihiro
Shigeta Ryohei
Lerner Avraham
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Toyoda Koki Kabushiki Kaisha
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