Abstract: An accelerator pedal device comprises a pedal lever having a pivot shaft which is pivotally supported by a fixed support bracket. The pedal lever is biased in such a direction that an upper part of the pedal lever approaches a fixed stopper member. A first auxiliary lever is pivotally supported by the pivot shaft and has a first upper portion located between the stopper member and the upper part of the pedal lever. A second auxiliary lever is pivotally supported by the pivot shaft and has a second upper portion located between the first upper portion and the upper part of the pedal lever. A first lost-motion mechanism is provided between the pedal lever and the second auxiliary lever, and a second lost-motion mechanism is provided between the second and first auxiliary levers.

Abstract: A transmission control system with gear shift failure detection includes a transmission (1), each gear of which is equipped with a synchromesh mechanism (1e); an actuator unit (2) consisting of a shift actuator (2a) for making a gear shift in a shift direction and a select actuator (2b) for making a gear shift in a select direction; a control unit (4) for calculating a target position signal (M) from an amount of pressdown of an accelerator pedal, a vehicle speed, and a set position of a gear selector to control not only the actuator unit so that a gear is set within a target range but also a clutch so that connection or disconnection is made according to an operation of the transmission; a position detector (2f, 2g) provided in each of the shift and select actuators for detecting a position of a piston rod (2c, 2d); a servo cylinder (2a, 2b) in response to a signal from the position detector to position the piston rod at a given position of each gear; a speed detector (4a) in response to a signal from the po

Abstract: The present invention relates to a vehicle brake and hub comprising a ring braking member having braking surfaces both to the interior and exterior of the member in combination with a cast hub which includes centrally disposed aligned bearing ports for receiving bearings. The cast hub includes an outwardly exposed securing surface which cooperates with the ring braking member to effect securement of the braking member to the casting and in a manner to accommodate heat transfer therebetween. The cast hub includes intermediate the securing surface and the aligned ports, fan blades which cause during rotation of the hub an axial flow of air to move across the bearing ports and to extract heat from the fan blades and the securing surface. The fan blade collectively interconnect and structurally secure the securing surface and the bearing ports.

Abstract: A drum brake has two sets of braking linings. The drum brake includes a brake plate and a brake drum. An additional cylinder is mounted on an outer periphery of the brake plate. The additional cylinder is actuated by hydraulic oil on depression of an additional brake pedal provided proximate to a clutch pedal of the car. A further brake lining is provided around an outer periphery of the brake drum. On depression of the additional brake pedal, the brake lining engages with the outer surface of the brake drum to provide additional stopping capability.

Abstract: A shifting system used in combination with a motor-vehicle engine having an output connected via a clutch to the input of a multiratio transmission in turn having an output connected to a load comprises respective sensors for detecting the speeds of the motor output, transmission input, and transmission output and for generating outputs corresponding thereto, and respective clutch and transmission sensors for detecting the settings of the clutch and transmission and generating outputs corresponding thereto. A shifter element can move between an actuated position and an unactuated position. A double-display has a current-setting part and an ideal-setting part and is connected to a controller that is also connected to the sensors. This controller displays on the current-setting part the current setting of the transmission and on the ideal-setting part a setting calculated to be ideal based at least on engine characteristics and transmission output speed.

Abstract: In an automatic transmission system for a vehicle having a gear transmission and a clutch which are electronically controlled by a control unit, the system includes a discrimination unit for discriminating whether or not the vehicle is running with the gear transmission shifted to its neutral position and a determining unit for determining a target gear position to which the gear transmission is to be shifted in the case where the vehicle is running without fuel-combustion in the engine. The control unit is caused to control the gear transmission to shift to the target gear position and the clutch to engage in response to the discrimination unit when an ignition switch is turned to its OFF position in the case where the vehicle is running with the gear transmission shifted to the neutral position, whereby the rotational torque of wheels can be transmitted through the automatic transmission system to the engine.

Abstract: In an electronically controlled automatic transmission system including a gear transmission and a clutch, in which a target gear position is determined in accordance with map data for gear-shift control, it is discriminated whether or not the vehicle is in accelerating condition and necessary control for shifting up the transmission to the target gear position is carried out only when the vehicle is not in the accelerating state. Thus, when the driver presses hard on an accelerating member to accelerate the vehicle, a series operations for shifting up is not carried out, whereby the transmission is kept in its present gear position. The operation for shifting up can be carried out after the completion of the acceleration of the vehicle.

Abstract: Disclosed is an engine-control apparatus in which an exhaust passageway of the engine is provided with plural sound deadening passages. A portion of the plural sound deadening passages is designed to be opened or closed by a shift valve on the basis of a predetermined switching characteristic, and the pressure of the exhaust gases is changed upon the switching of the shift valve. In order to prevent torque shock to the driven wheels which may occur attendant upon operation of the shift valve to open or close or in order to reduce probability that torque shock would occur, there is provided a torque regulating apparatus which permits an adjustment of torque generator by the engine, of a transmission efficiency of power to the driven wheel, or of a switching speed at which the shift valve is switched to open or close, or a change in the switching characteristic.

Abstract: A control system for a motor vehicle provided with a continuously variable transmission and a clutch for transmitting power of an engine to the transmission. The transmission has a transmission ratio control valve having ports and a spool for controlling the transmission ratio. A throttle position sensor is provided for detecting the load on an engine and for deciding a desired transmission ratio in accordance with the load. The clutch is automatically disengaged at low vehicle speed. When an accelerator pedal is depressed in order to re-accelerate the vehicle, the desired transmission ratio is increased to increase the speed of a drive pulley of the transmission so that the drive pulley speed equals the speed of the engine.

Abstract: A full time four wheel drive transmisson system for a vehicle includes a gear transmission mechanism, driven by an engine, which is automatically controlled to operate in any of several forward ranges of speed stages including a drive range and a set containing one or more intermediate hold ranges in which the engagement of at least one of the upper speed stages included in the drive range is prohibited. The transmission system also includes a central differential device, driven from the gear transmission mechanism, which provides rotational power to the combination of the front wheels of the automotive vehicle and to the combination of the rear wheels of the automotive vehicle while providing differential action between these combinations. The central differential device has a clutch which when engaged at least partly inhibits its differential action.

Abstract: A first clutch control is operated in response to an accelerator position signal so as to set a clutch from a disengaged state to a half engaged state. A second clutch control is provided for gradually engaging the clutch when a load signal from an engine load detecting is equal to or higher than a preset value, and for disengaging the clutch when the signal is higher than the preset value. After the second clutch control is operated when a difference between an engine speed and a clutch output shaft speed becomes equal to or lower than a predetermined value, the clutch is fully engaged by a third clutch control.

Abstract: A method of controlling a synchromesh type automatic transmission of a vehicle such as an automobile, including the steps of releasing a clutch for connecting an engine and the transmission in response to a speed change command, shifting the transmission from one speed position to a neutral position, shifting the transmission from the neutral position to a subsequent speed position, and applying the clutch. The double-clutching operation is conducted if a load upon synchronization during the speed changing operation exceeds a predetermined level, to once apply the clutch and subsequently release the clutch again while the transmission is in the neutral position. Thus, the synchronization load can be dropped to prevent any so-called "under-synchronization" in the transmission. The synchronization load is detected in terms of the difference between the r.p.m. of the input shaft of the transmission and the product of the vehicle speed or the r.p.m. of the output shaft of the transmission and the reduction ratio.

Abstract: A system is provided with an electromagnetic clutch for transmitting the output of an engine to a transmission. During deceleration of a vehicle by closing a throttle valve to an idling position, when the clutch is disengaged at a low vehicle speed, a transmission ratio control valve is operated to upshift the transmission, whereby the speed of a drive pulley of the transmission is decreased to the engine idling speed.

Abstract: A control system (100) for an engine-driven auxiliary equipment (51) for vehicles including a central control circuit (31) for controlling the shifting of gear ratios (low, 2nd) of an automatic transmission (10), which drives a driven wheel with power from an engine (1), in conformity with a shift may (Mt) having as variables thereof the vehicle speed (V) of the vehicle and the output (Th) of the engine (1), depending on an instantaneous vehicle speed (Vd) and an instantaneous engine output (Thd), is to control the auxiliary equipment (51), which is driven with power from the engine (1) and provided with a mechanism (52, 53) for transmitting and interrupting the power from the engine (1) to the auxiliary equipment (51).

Abstract: An automatic speed change control method for a self-movable vehicle wherein, during running of a self-movable vehicle of a type that a power of an engine is transmitted to driving wheels through a clutch and a finite-stage gear speed changer, a speed-change ratio is calculated from both an actual speed and an acceleration pedal stepping value, the clutch is disengaged after detecting the above speed change ratio having been equal to a next present speed-change ratio, next gears are meshed with a prescribed time delayed, characterized by that, only when the acceleration pedal stepping value is detected to be zero during running of the vehicle on a high-speed stage and at the same time the actual vehicle speed is larger than a prescribed preset vehicle speed at which a gear mode is to be changed to a low-speed stage, the gear mode is forcibly changed to the low-speed stage to enable an engine brake to function more effectively.

Abstract: An automatic clutch control system, for use in automobiles, using a microcomputer. Included in the system are an accelerator pedal sensor for detecting accelerator position; an engine speed sensor for detecting engine speed; a clutch stroke sensor for detecting clutch stroke; and an automobile speed sensor for detecting automobile speed. The microcomputer is included in a controller for controlling opening or closing of solenoid valves, gear change of a transmission, and opening or closing of a throttle actuator, based on predetermined stored data and based on signals transmitted from the sensors. The automatic clutch control system consequently can automatically control the clutch moving time and clutch moving speed for easy driving under all driving conditions. Moreover, while the clutch control system is fully automatic, it can use dry-type single-plate clutches and sliding-mesh-type transmissions as in manual and semiautomatic transmissions.

Abstract: Apparatus for controlling the operation of a vehicle's gear box. The apparaus generates electrical signals which are proportional to the vehicle's speed, the speed of the vehicle's engine, and the position of the vehicle's throttle.These signals are used to compute which gear is to be engaged at any particular instant, and where necessary, gear selection signals are generated. The gear selection signals are used to actuate the vehicle's clutch, and to control solenoids which manipulate the gear box.

Abstract: A crown-type caliper brake is disclosed comprising a cylindrical braking member and a C-shaped caliper member. The caliper member is mounted for sliding movement on the leg member of a fixed support of the brake. To this end a lobe on the caliper member has an opening which is received on the leg member extending parallel to the gripping axis of the brake along the direction of which the brake pads are applied by the caliper member against the braking member. The leg member is preferably of rectangular contour with its sides parallel to the axial gripping plane of the brake in sliding contact with corresponding surfaces in the lobe. Play between the other sides of the leg member and corresponding surfaces in the lobe is taken up by a leaf spring. Pins or studs extending between the limbs of the caliper member, or the intermediate portion of the caliper member itself, block the brake pads against circumferential displacement.

Abstract: The invention relates to a brake which is particularly suited to vehicles, and whose brake member is in the shape of a ring having axially-extending braking surfaces on the inner and outer surfaces thereof, and whose fixed support comprises two side members arranged on both sides of a generally C-shaped control member. According to the invention, these side members are coupled circumferentially to one another within the ring by a connecting bar whose circumferential ends are radially connected to the side members at the level of the regions thereof against which the inner brake pad can be brought to bear.

Abstract: A brake is disclosed comprising an annular cylindrical braking member with brake shoes respectively on the inside and outside of the braking member which are straddled by a C-shaped caliper member. The caliper member is pivotally and slidably mounted by a composite mounting assembly comprised of a pivot pin and a tubular bracing member received snugly thereon. The pivot pin acts in tension between opposed leg portions of fixed support while the bracing member acts in compression. A sealing pad or cap is disposed at each of the ends of the passageway in the caliper member through which the mounting assembly extends for providing fluid tightness thereat.

Abstract: There is described a brake shoe for a ring type brake which means it has a cylindrical brake ring secured to a member to be braked. The brake shoe comprises a part-cylindrical, preferably sheet metal support plate having on one face a brake lining and on the opposite face an elongate rib extending generally between opposed edges of the support plate and having a substantially flat bearing surface. Preferably the rib is stamped in the sheet metal support plate and receives a complementary portion of the brake lining material therein. The rib may be disposed cordally of the support plate or parallel to the generatrices thereof. Two such ribs may be provided on a support plate parallel to each other though spaced at different distances from median plane thereof. The contact areas of the substantially flat bearing surface with the piston of the hydraulic unit associated therewith are preferably dissymmetrical about one or both of the median planes of the brake shoe.

Abstract: A vehicular gas turbine engine power system includes an engine, an automatic clutch, a service clutch and an infinitely variable transmission coupled successively along a power train. A vehicle control system controls engine speed, transmission ratio and automatic clutch engagement in response to operator selected ground speed and engine speed commands as well as other vehicle conditions. The vehicle control system operates in a manual mode to maintain engine speed as commanded by an operator or in an automatic mode to maintain an engine speed which will minimize fuel consumption. The transmission ratio is controlled for fixed rate vehicle acceleration toward a commanded speed if sufficient power is available. Otherwise ground speed is cut back to match required power with available power. However, ground speed cut back is limited as a safety feature and disengagement of the automatic clutch prevents engine stall when the engine becomes overloaded.

Abstract: Inner and outer brake shoes are swivel-mounted on the arms of a yoke. When the yoke is rotated, the shoes move concurrently toward and away from inner and outer braking surfaces of a brake drum. The swivel mounting facilitates optimum seating engagement with the braking surfaces and in cases where the drum is warped, serves to maximize braking area and minimize wear. Stops positioned near opposite ends of the shoes limit their circumferential movement. An electric puck or a hydraulic actuator is used to rotate the yoke.

Abstract: An emergency brake unit that is hydraulically operated which may be removably secured in pairs to the axle of a pneumatic-tired freight vehicle. In an emergency the pair of brake units may be concurrently actuated to bring first and second braking surfaces into frictional contact with both the interior and exterior surfaces of the brake drums with which they are associated. Each of the emergency brake units is of such structure that it may be used with a brake drum of either a left or right pneumatic-tired wheel. The braking surfaces of the emergency brake units are preferably metallic, and are brought into metal-to-metal contact with the exterior and interior surfaces of the brake drum when the units are actuated by hydraulic fluid under pressure.