| Patent Number |
Title Of Patent |
Date Issued |
| 7270205 |
Vehicle drive device, and front-and-rear wheel-driven vehicle formed of the device |
September 18, 2007 |
| A vehicle drive device 20 is composed of an electric motor 20a, a differential gear 20d for distributing and transmitting the drive power from the electric motor 20a to right and left drive wheels, and a clutch 20c for making intermittent the coupling capable of transmitting the driv |
| 7258185 |
Drive power transmission equipment |
August 21, 2007 |
| Front and rear wheels Tf, Tr of a motor vehicle driven by an engine 10 are connected through a differential control device 15 which is capable of varying the torque to transmit. When the turning radius of a predetermined one wheel or the motor vehicle is equal to or smaller than a pr |
| 7257474 |
Steering system for vehicle |
August 14, 2007 |
| In a steering system 30, a transmission ratio R1 which 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 g10 which is determined in dependence on the distribution of a trave |
| 6935455 |
Drive system control method and drive power transmission control system for vehicle |
August 30, 2005 |
| A drive system control method and a drive power transmission control system for a four-wheel drive vehicle are provided for enabling the vehicle to operate selectively in an ordinary mode and an anti-vibration mode. In the ordinary mode, the connection force of a coupling device which is |
| 6907953 |
Driving force distribution control device and driving force distribution method for four-wheel d |
June 21, 2005 |
| 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 |
| 6864652 |
Drive system for automotive vehicle of front-and-rear wheel drive type |
March 8, 2005 |
| A drive system for an automotive vehicle of the front-and-rear wheel drive type, comprising a primary drive mechanism for drive of a set of front road wheels and an ancillary drive mechanism for drive of a set of rear roar wheels, wherein the front road wheels are driven by operation of |
| 6745885 |
Power distribution control apparatus for four-wheel drive vehicle and a method for controlling t |
June 8, 2004 |
| A power distribution control apparatus determines a command value that corresponds to the driving state of a four-wheel drive vehicle. The vehicle includes a pair of front wheels and a pair of rear wheels, and a coupling device that changes the power distribution to the front wheels |
| 5467281 |
Controller for power steering apparatus |
November 14, 1995 |
| A controller for a power steering apparatus in which operation fluid for generating assist torque is pumped by a motor-driven pump. The controller controls the flow rate of the operation fluid by changing the voltage supplied to the motor. The controller is provided with a section for |
| 5103926 |
Power steering apparatus with electric motor |
April 14, 1992 |
| A power steering apparatus wherein a heated state of the electric motor is detected without employing any temperature sensor. There are previously stored plural temperature characteristics each representing the relationship between the temperature variation caused per unit time in the |
| 4794536 |
Steering angle detection device |
December 27, 1988 |
| A steering angle detection device of the type wherein a computer (12) calculates a steering angle. When a steering shaft (20) is turned, pulse signals (SS1, SS2) are generated from an encoder (10). In response to these pulses signals (SS1, SS2), the computer (12) detects the rotational |
| 4781263 |
Steering force controller for power steering device |
November 1, 1988 |
| A steering force controller for an automobile power steering device includes a solenoid-operated valve openable and closable by a current applied to a solenoid thereof for controlling a fluid supplied under pressure to a power cylinder for operating steerable wheels, an automobile sp |
| 4747055 |
Driving status discrimination device for a motor vehicle |
May 24, 1988 |
| A driving status discrimination device for a motor vehicle is provided with a microcomputer, which stores in a memory a plurality of the latest steering angle signals which are output from a steering angle detector each time the vehicle runs a predetermined distance. The microcomputer |
| 4662466 |
Steering force controller for a power steering apparatus |
May 5, 1987 |
| An electronically controlled power steering apparatus wherein the steering force generated by a power cylinder (15) is controlled by a microcomputer (54). Detection signals from a vehicle speed sensor (50) and a steering angle sensor (51) are input to the microcomputer (54), which thus, |
