Abstract: In a control system wherein slippage of a vehicle drive wheel is detected and when the slip is excessively large, an engine output or drive wheel torque is reduced, there are provided means for calculating the grip force of the drive wheel and further means for changing the reduction amount of engine output or drive wheel torque, or the reduction speed, or the reduction characteristic dependent on a signal from the grip force calculating means. This enables a sporty travel of a vehicle.

Abstract: In a system for preventing an excessive slipping of a drive wheel of a vehicle, including a drive wheel torque decrement calculating means for calculating a drive wheel torque decrement in accordance with the slipping state of the drive wheel on the basis of a drive wheel velocity and a vehicle velocity, there is further includes a switchover means which produces a torque decrement switchover signal in accordance with a further large slipping of the drive wheel appearing during a given torque reduction control, and a torque decrement changeover means which delivers, to the drive wheel torque decrement calculating means,a correcting signal indicative of a command to reduce the degree of relation of the torque decrement to the slipping state of the drive wheel in accordance with an output of the torque decrement changeover signal from the switchover means, whereby it is possible to avoid a control hunting which may be caused by a larger slipping state of the drive wheel due to a disturbance factor.

Abstract: A device for detecting a bad or bumpy road from a moving vehicle includes a plurality of wheel speed detectors for detecting the corresponding wheel speeds of a plurality of different wheels, an arithmetic circuit for calculating a difference between values detected in the individual wheel speed detectors, a filter, receiving outputs from the arithmetic circuit, for processing only components in a predetermined frequency band, and a determination circuit for determining if a vehicle is travelling on a bad road based on outputs from the filter. The device easily detects a bad road from a moving vehicle on the basis of outputs from said wheel speed detectors, without being affected by instantaneous variation in the wheel speeds.

Abstract: A method for improving the internal center segregation and center porosity of a continuously cast slab, wherein an unsolidified side edge portion and a given area at the upstream side of the cast slab during continuous casting are defined as a plane reducing zone; a holding means is provided having two sets of top and bottom walking plane reducing compressing means at the plane reducing zone, front and rear supporting shafts common to the sets, eccentric cams for each set arranged at the front and the rear supporting shafts for holding and releasing of the cast slab, and a front and a rear displacement mechanism; the cast slab holding position of the upper surface of the bottom side walking plane reducing means of each set is set within 0.5 mm of the deviation on a passline of a continuous casting machine; the cast slab holding position of the lower surface of the top walking plane reducing means of each set is set at a desired reduction taper having a plane reduction ratio of 0.5 to 5.

Abstract: A system for detecting the abnormality of a steering angle sensor comprises a steering angle sensor for detecting the steering angle of a wheel of a vehicle to be steered, a reference motional parameter determining apparatus for determining a reference value of a vehicle motional parameter on the basis of the steering angle, a motional parameter detector apparatus for detecting a vehicle motional parameter indicative of the same physical quantity as the reference motional parameter, and an abnormality judging apparatus for judging the abnormality of the steering angle sensor by use of the reference motional parameter and the vehicle motional parameter. It is possible to reliably and promptly detect the abnormality of the steering angle sensor.

Abstract: A steering angle detecting system for a vehicle includes a sensor responsive to rotation of a steering wheel for generating angular pulses corresponding in number to the steering angle of the steering wheel. Another sensor generates a reference pulse at a predetermined angle of the steering wheel. The angular pulses are counted by a counter. The steering angle detecting system is determined to be abnormal if the counted value of the counter is not within a predetermined value range when the reference pulse is generated. Further, the rate of change of the counted value by the counter is detected, and the steering angle detecting system is determined to be abnormal if the detected rate of change of the counted value is greater than a predetermined value. Further, the steering angle detecting system is determined to be abnormal if the detected rate of change of the counted value has continued to be smaller than a predetermined value for a predetermined time period or longer.

Abstract: A driving wheel slip control device has a prohibition determining device for determining a prohibition region in which an engine control operation such as fuel suspension or an ignition stop is carried out, and a prohibition device for prohibiting the engine control operation even if an excessive or abnormal slip is generated. Prevention of a resonance and an engine stall are realized in addition to an expansion of a slip control region.

Abstract: A device for detecting a bad or bumpy road from a moving vehicle includes a plurality of wheel speed detectors for detecting the corresponding wheel speeds of a plurality of different wheels, an arithmetic circuit for calculating a difference between values detected in the individual wheel speed detectors, a filter, receiving outputs from the arithmetic circuit, for processing only components in a predetermined frequency band, and a determination circuit for determining if a vehicle is travelling on a bad road based on outputs from the filter. The device easily detects a bad road from a moving vehicle on the basis of outputs from said wheel speed detectors, without being affected by instantaneous variations in the wheel speeds.

Abstract: A traction control system controls the slip of a driving wheel of a vehicle having at least two driving wheels. The traction control system includes a driving wheel speed sensor for sensing the speed of the driving wheels and for generating a driving wheel speed signal as a function thereof, a vehicle speed sensor for sensing the speed of the vehicle and for generating a vehicle speed signal as a function thereof, and a first selecting circuit, included within the driving wheel speed sensor and operatively connected to said vehicle speed sensor, for generating the driving wheel speed signal in response to the vehicle speed signal. The system also provides for a controller responsive to the driving wheel speed signal from the first selecting circuit for controlling the slip of the driving wheel.

Abstract: A vehicle traction control device includes an engine output controller for deactivating the combustion stroke of an engine in order to control the vehicle traction, a vehicle speed judgment circuit for judging whether or not a speed detected by a vehicle speed detector is lower than a preset speed, and an engine revolution-number judgment circuit for judging whether or not a value detected by an engine revolution-number detector exceeds a preset value, wherein the vehicle speed judgment circuit and the engine revolution-number judgment circuit are connected to the engine output controller so as to deactivate the engine combustion stroke when the vehicle speed is lower than the preset speed and the number of revolution of the engine exceeds the preset value.

Abstract: A slip control method controls slip of the driving wheels of a vehicle. The method includes detecting excess slip of the driving wheels of the vehicle during acceleration, and reducing a driving force to said driving wheels upon detection of said excess slip in order to limit the slip of the driving wheels. The slip control of said driving wheels is inhibited upon detection of the application of a parking brake of the vehicle, or upon the detection of the transmission of the vehicle as being in the reverse gear position.