PURPOSE: To make the torque given to driving wheels quickly convergeable toward the desired value, by installing an altering device which alters a speed of response to the direction of increasing the torque given to the driving wheels so as to make it smaller as compared with the time of being hard to slip when a road surface is liable to slip. CONSTITUTION: There is provided with a torque regulating device A which regulates the torque given to driving wheels by means of generated torque regulation by control over a throttle valve of an engine and braking force regulation by a brake. And also, there is provided with a slip detecting device B detecting a slip state to a road surface of the driving wheels, and the torque regulating device A is controlled by a slip controlling device C so as to cause the detected driving wheel slip to become the specified desire value. In addition, there is provided with a road state detecting device D which detects slipperiness of the road surface, and according to the output, a speed of response in the direction of increasing the torque given to the driving wheels is set so as it make it smaller as compared with the time of being hard to slip when the road surface is liable to slip by a response speed altering device E. COPYRIGHT: (C)1988,JPO&Japio

Slip controller for automobile

A solid electrolytic capacitor of the present invention has a structure where respective anode sections of capacitor elements are joined to an anode lead frame by resistance welding via a through hole formed in the anode lead frame Current thus collects to the through hole during the welding to break a dielectric oxide film layer to expose aluminum foil, and the molten aluminum collects into the through hole Stable welding work is therefore allowed without splashing the aluminum, and a solid electrolytic capacitor having high welding strength, high reliability, and reduced ESR can be obtained

Solid electrolytic capacitor and its manufacturing method

A traction control system for a vehicle reduces the rate of slip of driving wheels (IRR,IRL) of the vehicle by reducing the traction force transmitted to the road surface from the driving wheels (IRR,IRL) when the driving wheels (IRR,IRL) slip. Whether the vehicle is making a turn is judged, and whether the vehicle is in an instable state which occurs when the vehicle is making a turn. The traction force is reduced by a higher rate when the driving wheels (IRR,IRL) slip while the vehicle is making a turn than when the driving wheels (IRR,IRL) slip while the vehicle is running straight, and the traction force is reduced by a higher rate when the driving wheels (IRR,IRL) slip while the vehicle is in an instable state than when the driving wheels (IRR,IRL) slip while the vehicle is making a turn.

Traction control system for vehicle

During a starting operation or a low-speed drive of a vehicle on a slope, the drive control of the invention sets a gradient-corresponding rotation speed N? as a rotation speed of an engine to output a required driving force against a longitudinal vehicle gradient ?fr (step S110), and sequentially sets a low-µ-road correction rotation speed Nlow upon identification of a low-µ-road drive condition, a vehicle speed difference-compensating rotation speed Nv based on a vehicle speed V, and a brake-based correction rotation speed Nb based on a brake pressure Pb (steps S120 through S250). The drive control sets a target engine rotation speed Ne* based on these settings (step S260) and subsequently sets a target throttle opening THtag (step S270). The operation of the engine is controlled with the greater between the target throttle opening THtag and a required throttle opening THreq corresponding to an accelerator opening Acc (step S290). This arrangement effectively prevents an unexpected slide-down of the vehicle along the slope.

Motor vehicle and control method of motor vehicle

A traction control device includes: rotation speed detectors provided to wheels; a control-start determiner that determines whether or not to control a braking mechanism and a differential adjusting mechanism based on rotation speeds; a braking mechanism controller that controls the braking mechanism based on a result of the determination of the control-start determiner; and a differential adjusting mechanism controller that controls the differential adjusting mechanism based on the result of the determination of the control-start determiner, in which the control-start determiner includes: a right-left-wheel rotation speed difference calculating section; a front-rear-wheel rotation speed difference calculating section; and a control-start determining section that determines whether or not to start controlling at least one of the braking mechanism and the differential adjusting mechanism when one of rotation speed differences reaches or exceeds a predetermined threshold.

Traction Control Device

PURPOSE: To improve the traveling performance on a split μ road by selecting the less speed among the right and left drive wheel speed and calculating the actual slip rate from the selected drive wheel speed and the driven wheel speed and executing the drive power reduction control. CONSTITUTION: In a car speed detecting device equipped with a differential limit mechanism (c) between the right and left drive wheels (a) and (b), the right and left drive wheel speed detecting means (d) and (e) for detecting the revolution speed of the right and left drive wheels (a) and (b) in a driven wheel speed detecting means (f) for detecting the revolution speed of the driven wheel are installed. A drive wheel speed selecting means (g) calculates the actual slip rate between a tire and road surface by an actual slip rate calculating means (h) from the selected drive wheel speed and the driven wheel speed. The actual slip rate is compared with a prescribed set slip rate, and when the actual slip rate exceeds the set slip rate, a drive power control means (i) executes the drive power reduction control, and the drive wheel slip is suppressed. COPYRIGHT: (C)1989,JPO&Japio

Drive power controller for vehicle

PURPOSE: To prevent excessive slip restraint by releasing fuel supply from decrease control when the rotational frequency of an engine is shifted from acceleration to deceleration CONSTITUTION: A throttle valve control circuit 34 calculates an actual slip ratio between a tire and road surface from drive wheel speed sensed by front wheel rotational frequency sensors 31, 32 and vehicle speed sensed by a rear wheel rotational frequency sensor 30 When the actual slip ratio exceeds a predetermined set one, drive force reduction control including fuel supply reduction control is started by a fuel cut device 36 When the rotational frequency of an engine detected by an engine rotational frequency sensor 39 is shifted from acceleration to deceleration, fuel supply reduction control is released Thus, control releasing timing can be carried out early by monitoring the increase and decrease of engine rotational frequency, so that a responsive lag in a power train P between an engine 10 and drive wheels 16, 17 due to tortion or the like of a propeller shaft 12 can almost be eliminated COPYRIGHT: (C)1989,JPO&Japio

Drive force controller for vehicle

PURPOSE: To enable execution of control prohibited against a feeling of physical disorder produced during control of an accel, by a method wherein, when a state in that a slip ratio is below a set value is continued for a given time, a control characteristics map of an upper level in which an increase ratio of a throttle opening to an accel control amount if increased is selected. CONSTITUTION: A map selecting means (g) is provided for selecting a map of an upper level, in that an increase ratio of a throttle opening to an accel control amount is increased over that of a present control characteristics map, from a map set means (f) when a state in that an output from a accel control amount detecting means (d) exceeds a set value and a slip ratio determined from outputs from drive wheel speed and a car body speed detecting means (a) and (b) by means of a computing means (c) is below a set value is continued for a given time. By using the selected control characteristics map, a target throttle opening value responding to an accel control amount is determined by a set means (h). A throttle actuator (i) is controlled by a control means (j) so that an actual throttle opening value detected by a detecting means (e) is coincided with a target throttle opening value. COPYRIGHT: (C)1988,JPO&Japio

Toru Iwata

Papers

Drive power controller for vehicle

Drive force controller for vehicle

Drive force control device for vehicle