摘要:
A pneumatic tire comprises a tread portion provided with: an inside circumferential groove (3) near the tread edge (Ti); 1st axial grooves (4) extending from the inside circumferential groove (3) toward the tire equator (C); oblique grooves (5) extending from the respective 1st axial grooves (4) to the outside tread edge (To), while inclining to the opposite direction to the intended tire rotational direction (R); 2nd axial grooves (6) extending from the inside circumferential groove (3) to the oblique grooves (5); and connecting grooves (7) extending between the oblique grooved 5. The tread portion (2) is provided with bent blocks (B1) each made up of an axial part (11) and oblique part (12). The bent point (E1) of the bent block (B1) is positioned on the inside tread edge side of the tire equator (C), and the axial distance (L1) therebetween is 0.10 to 0.25 times the tread width (TW).
摘要:
A pneumatic tire comprises a tread portion having an outside tread edge and an inside tread edge. The tread portion is provided with: a plurality of oblique grooves extending from the outside tread edge toward the inside tread edge beyond the tire equator, while inclining to one circumferential direction corresponding to the tire rotational direction at angles of from 20 to 45 degrees with respect to said one circumferential direction; and a plurality of connecting grooves extending between the oblique grooves at angles β of from 90 to 180 degrees with respect to said one circumferential direction. Between every two of the adjacent oblique grooves, there are disposed are three or more of the connecting grooves which are gradually decreased in the angle β from the outside tread edge towards the inside tread edge, whereby a plurality of oblique blocks are formed between every two of the adjacent oblique grooves.
摘要:
A motion control device for a vehicle includes a controlling means for maintaining a traveling stability of the vehicle by controlling a braking force of a wheel of the vehicle, a friction coefficient obtaining means for obtaining a friction coefficient of a road surface on which the vehicle travels, a lateral force reference value calculating means for calculating a lateral force reference value acting on the wheel on the basis of the friction coefficient of the road surface and a lateral force actual value obtaining means for obtaining a lateral force actual value acting on the wheel, wherein the controlling means controls the braking force on the basis of a comparison result between the lateral force reference value and the lateral force actual value.
摘要:
A condition of hydraulic fluid conducted from an accumulator to an operation device via a pressure control unit, is evaluated by determining a pressure (Pa) of the fluid in a flow path interconnecting the accumulator and the control unit, and determining a stabilization time (T) when an absolute value of a pressure gradient per unit time of the pressure falls below a predetermined value. A pressure drop (ΔPa) of the pressure is determined during a period between a time (T0) when the pressure begins to decrease, or at a time before the time (T0) and the stabilization time (T). The pressure drop is compared with a predetermined pressure drop that is obtainable under normal conditions. An increase in (ΔPa) can signify the entry of air into the hydraulic fluid, or a leakage of the hydraulic fluid.
摘要:
A hydraulic pressure control device is provided in which a proportional pressure control valve is actuated by operating the brake pedal to adjust the hydraulic pressure supplied from a pressure source to the wheel brakes to a value corresponding to the pedal operating amount. Also, a brake device for a vehicle using it is provided. The proportional pressure control valve is integrated with a hydraulic pressure generator to transmit the input from the brake pedal to a spool valve in the control valve through a first piston, first spring, second piston and second spring of the hydraulic pressure generator. If the pressure source or the wheel brakes in a first line fail, after the second piston has made a full stroke, brake fluid in a fluid chamber is pressurized, so that the hydraulic pressure generated is supplied to wheel brakes in a second line through a copy valve which is open.
摘要:
A method of controlling a hydraulic pressure source-drive type vehicle hydraulic brake system which would not make the driver feel a delay in the effect of braking, and in which the braking force acts quickly and reliably even during urgent braking. A stroke sensor for detecting the pedal depressed amount in the initial play area is provided. By activating a motor for a pump for supplying brake fluid to a wheel cylinder beforehand when the stroke sensor detects that the pedal depressed amount has reached a predetermined threshold, the time needed to depress the brake pedal to the terminal position of the initial play area and the delay time in response of the actuation of the motor are overlapped to shorten the time from the start of depressing of the brake pedal to the actuation of the brake.
摘要:
A control method of a hydraulic pressure source-driving type vehicle hydraulic brake system is provided in which water hammering or worsening of the brake feeling does not occur when brake liquid is replenished through a replenish passage. A motor for driving a pump is actuated at a full driving force with an on-off valve in the brake liquid replenish passage opened in the stage in which the hydraulic pressure difference between the master cylinder pressure and the brake hydraulic pressure is small. Also, in the stage in which the brake hydraulic pressure is increased, so that the hydraulic pressure difference from the master cylinder hydraulic pressure has entered a predetermined range, a solenoid valve in the replenish passage is closed to return to the normal control in which the driving force of the motor is controlled so as to correspond to the hydraulic pressure difference.
摘要:
An electrostatic printing method for developing an electrostatic latent image on a recording member by first developing the image by the "electrostatic developing" method in which a liquid developer comprising an insulating liquid vehicle and a solid colorant is electrostatically attracted and applied only to the electrostatic latent image, and then further developing the image, by "liquid developing" in which an insulating liquid miscible with the vehicle used in the electrostatic developing step and containing substantially no coloring matter is applied to the image and non-image areas on the recording member, whereby some of the solid colorant attracted to the electrostatic image is charged and migrates to any image portion not developed by the electrostatic developing step.
摘要:
A pneumatic tire comprises a tread portion having an outside tread edge and an inside tread edge. The tread portion is provided with: a plurality of oblique grooves extending from the outside tread edge toward the inside tread edge beyond the tire equator, while inclining to one circumferential direction corresponding to the tire rotational direction at angles of from 20 to 45 degrees with respect to said one circumferential direction; and a plurality of connecting grooves extending between the oblique grooves at angles β of from 90 to 180 degrees with respect to said one circumferential direction. Between every two of the adjacent oblique grooves, there are disposed are three or more of the connecting grooves which are gradually decreased in the angle β from the outside tread edge towards the inside tread edge, whereby a plurality of oblique blocks are formed between every two of the adjacent oblique grooves.