Abstract: In a vehicle control unit provided with a motor applying a power to a rear wheel, in order to obtain sufficient driving force and braking force in a range in which the rear wheel does not slip sideways at a time when a vehicle turns, a motor torque is continuously controlled by calculating a rear wheel braking and driving force in the range in which the rear wheel does not slip sideways on the basis of a vehicle turning amount and a front wheel torque. Specifically, an absolute value of the motor torque is made smaller in accordance with an increase of the vehicle turning amount, and an absolute value of the motor torque is made larger in accordance with an increase of an absolute value of the front wheel torque.

Abstract: A vehicle can ensure an engine torque the driver desires even though the load torque of a generator with respect to the engine varies, and in particular can restrain occurrence of such a risk that an engine stall occurs when a load to the engine is large upon, for example, engagement of a clutch. A controller predicts a load torque of the generator with respect to the engine in future several hundred milliseconds at maximum from the present time, in view of a magnetic field voltage and a speed of the generator at the present time, and controls the engine in accordance with the predicted load torque in order to prevent the output torque of the engine from being insufficient.

Abstract: A controller for an electric four-wheel-drive vehicle, which can ensure smooth running performance of the vehicle, an electric driving system, and an electric four-wheel-drive vehicle using the controller. A first wheel is driven by an engine, a second wheel is driven by a motor, and a driving force of the engine is transmitted to the first wheel through a manual transmission and a clutch. When the clutch is in a partially engaged state, a controller (4WDCU) receives an input signal representing a degree of engagement of and clutch and outputs a signal to control a driving force of the motor in accordance with the input signal. When the vehicle starts running and no slips occurs in the wheels, the 4WDCU outputs the signal to gradually increase the driving force of the motor as the engagement of the clutch is progressed.

Abstract: A differentiator calculates the acceleration of the rear wheels. An acceleration threshold calculation means enable the skid-detection acceleration threshold to be adjusted corresponding to the conditions of the vehicle. An acceleration skid-detection means make a comparison between the acceleration of the wheels obtained by the differentiator and the skid-detection acceleration threshold adjusted by the acceleration threshold calculation means, and determine whether or not a skid of the wheels has occurred, based upon the comparison result. Such an arrangement provides a vehicle driving force system having a function of detecting a skid even in a case that a skid of the wheels has occurred at a low acceleration of the vehicle.

Abstract: A vehicle driving force control system capable of reducing a shock caused at the time of clutch release. At the time of a shift from a 4-wheel-drive state to a 2-wheel-drive state, a motor rotation angle control unit brings a clutch into a released state when a clutch angle of an engagement portion of the clutch is within a predetermined range. Also, at the time of a shift from the 4-wheel-drive state to the 2-wheel-drive state, the motor rotation angle control unit controls an output torque of a motor so that the clutch angle of the engagement portion of the clutch takes a predetermined value within the predetermined range.

Abstract: It is desirable prevent the speed of an engine, that is driving an electric-power generator, from abruptly increasing when electric power generation by the electric power generator, which supplies electric power to a wheel-driving motor, is stopped. Thus, a control apparatus is provided for a vehicle electric power generator to control the amount of electric power generated by the electric power generator, which is connected to, and driven by, an engine for driving a vehicle. Wheel speed detection means is provided to detect slipping of the wheels, and the control apparatus operates to ensure that, when the amount of electric power generated is to be reduced, if the wheels are not slipping, the amount of electric power generation by the electric power generator is slowly reduced, in comparison with the case where the wheels are slipping.

Abstract: A vehicle driving system in which one of front wheels and rear wheels is driven by an internal combustion engine and the other thereof is driven by an electric motor. The system is comprised of: a generating apparatus that generates electric power by rotation of the internal combustion engine; the electric motor driven by electric power outputted from the generating apparatus; and a control unit for controlling output power of the generating apparatus in accordance with a driving force requested from a vehicle and controlling the electric motor. The generating apparatus comprises a tandem generator equipped with a charge function for charging a vehicle-mounted battery and a power supply function for driving the electric motor.

Abstract: A motor control apparatus for a hybrid car is capable of reducing a spin of the wheel driven by the motor. The hybrid car comprises an engine driven wheel driven by an engine and a motor driven wheel to be driven by a motor for driving the wheel not driven by the engine. The hybrid car has an engine 11, a front wheel 12 driven by the engine 11, a generator 15 connected to this engine and driven thereby, an electric motor 13 for driving the rear wheel 14 using power provided by the generator without being driven by the engine, and a controller 20 mounted on the car to control the output of this electric motor. The controller 20 controls the field currents of the electric motor and generator in such a way that the driving torque of the motor driven wheel to be driven by the electric motor is smaller than the driving torque of the engine driven wheel to be driven by the engine, thereby ensuring traction and car stability.

Abstract: A hybrid car capable of stably ensuring the bad road running property, obtaining large acceleration in a satisfactory road surface state, and simultaneously when no large acceleration is required, running with fuel consumption kept unchanged is provided. The hybrid car is composed of an engine 1 for driving either of front wheels 2 and rear wheels 8, a generator 10 driven by the engine, a wheel driving motor 14 for driving engine non-driven wheels by power of the generator, a supercharger driving motor 1b for driving a supercharger 1a by the generator, a power distributor 12 adjusting power quantity for distributing the power from the generator to the supercharger motor and wheel driving motor, and a controller 7 for inputting information of wheel speed sensors 3a and 3b and controlling power distribution of the distributor.

Abstract: To provide a four-wheel drive system which improves running performance of an automotive vehicle by inhibiting a driving torque from becoming insufficient upon occurrence of a slip. An R slip sensing means of a DC motor torque calculating means senses a slip due to a spin of rear wheels. When the rear wheel slip is sensed, an R slip DC-motor-torque correcting means corrects a torque of the rear wheels so that a driving force of the rear wheels is reduced and then increased. The R slip DC-motor-torque correcting means reduces a driving torque of the rear wheels to eliminate the slip and holds the reduced driving torque until the slip is eliminated, and then increases the driving torque to a value lower than a value which the driving torque has taken at the time of occurrence of the slip. The driving torque is increased to a predetermined limit value depending on the number of slips.

Abstract: In a hybrid car, or an electric motor-driven four-wheel-drive vehicle, in which an electric motor is driven directly by an output from a generator, vehicle running performance is enhanced. The output from the generator is controlled so as to maintain a generator torque in a range, in which the vehicle does not stall. Specifically, a driving apparatus for the hybrid car includes a second generator 2 driven by an engine 1 for driving one pair of either front or rear wheels 14, 15, an electric motor 5 driven through directly receiving the output from the second generator 2 and driving the other pair of either the front or rear wheels 14, 15, and a four-wheel-drive control unit 6 controlling driving of the second generator 2 and the electric motor 5. When the engine 1 is in an overloaded condition, the four-wheel-drive control unit 6 limits the output of the second generator 2.

Abstract: A motor control apparatus for a hybrid car capable of reducing a spin of the wheel driven by the motor, wherein the hybrid car comprises an engine driven wheel driven by an engine and a motor driven wheel to be driven by a motor for driving the wheel not driven by the engine. In an engine 11, a front wheel 12 driven by an engine 11, a generator 15 connected to this engine and driven thereby, an electric motor 13 for driving the rear wheel 14 connected by the generator without being driven by the engine, and a controller 20 mounted on the car to control the output of this electric motor; the controller 20 controls the field currents of the electric motor and generator in such a way that the driving torque of the motor driven engine to be driven by the electric motor is smaller than the driving torque of the engine driven wheel to be driven by the engine, thereby ensuring the traction and the car stability.

Abstract: To prevent the revolving speed of an electric-power generator driving engine from abruptly increasing when electric power generation by an electric power generator which supplies electric power to a wheel-driving motor is stopped. A control apparatus 4 for a vehicle-use electric power generator, intended to control the amount of electric power generated by an electric power generator 2 which is connected to, and driven by, an engine 1 for driving a vehicle, wherein a wheel speed detection means 7 is equipped to ensure that when the amount of electric power generated is to be reduced, if the wheels are not slipping, the amount of electric power generation by the electric power generator is slowly reduced in comparison with the case that the wheels are slipping.