Abstract: In a vehicular parking lock device, supplying a hydraulic pressure from pressure regulation of a line pressure by a linear solenoid valve to a hydraulic brake via a switching valve operated by a first solenoid valve enables a transmission to carry out a shift change. If desired that a parking lock is not operated when an engine stops, the hydraulic pressure stored under pressure in an accumulator is discharged to a drain oil passage by connecting the linear solenoid valve selectively to the drain oil passage by the first solenoid valve, thereby making it possible to prevent the hydraulic pressure stored under pressure in the accumulator from being supplied to a locking oil chamber at the other end of the hydraulic actuator. The first solenoid valve is used for both controlling the operation of the hydraulic brake and discharge of the hydraulic pressure stored under pressure in the accumulator.

Abstract: A parking lock apparatus includes an engaging mechanism, a slider, a hydraulic circuit, and a processor. The engaging mechanism is to prevent a rotation of a rotating body when the engaging mechanism is in a mechanical engagement state. The slider is to switch a state of the engaging mechanism between the mechanical engagement state and a mechanical disengagement state in accordance with a position of the slider. The hydraulic circuit is to change the position of the slider. The processor is configured to increase line pressure in the hydraulic circuit when the engaging mechanism is in the mechanical engagement state.

Abstract: The present invention provides an automatic transmission capable of properly judging faults of a switching mechanism. A control part ECU of the automatic transmission TM has an actual change gear ratio calculating part 10 and a fault judging part 11. Under a condition that the control part ECU has recognized that the first brake device B1 is switched to a reverse rotation preventing state, if the actual change gear ratio is kept to be an actual change gear ratio prior to a reduce of a rotational speed of a drive source ENG when the rotational speed of the drive source ENG is reduced, then the fault judging part 11 judges that a first brake B1 has a fault.

Abstract: This invention provides a control apparatus for an automatic transmission, which includes a plurality of engaging mechanisms. The plurality of engaging mechanisms includes a mechanical engaging mechanism configured to function as a brake. The mechanical engaging mechanism can be switched between a first state in which rotation of a rotational element is restricted only in one direction and a second state in which the rotation is restricted in both directions. When switching from the first state to the second state, the control apparatus executes engagement control to set a plurality of hydraulic friction engaging mechanisms in an engaging state. Control to set a predetermined hydraulic friction engaging mechanism in a half-engaging state and brake an output member can be executed in parallel to the engagement control.

Abstract: This invention provides a control apparatus for an automatic transmission, which includes a plurality of engaging mechanisms. The plurality of engaging mechanisms include a mechanical engaging mechanism configured to function as a brake. The mechanical engaging mechanism can be switched between a first state in which rotation of a rotational element is restricted only in one direction and a second state in which the rotation is restricted in both directions. When switching from the first state to the second state, the control apparatus executes engagement control to set a plurality of hydraulic friction engaging mechanisms in an engaging state. In the engagement control, oil pressure supply control changes depending on the vehicle speed.

Abstract: An object of the present invention is to provide a glass plate capable of suppressing deformation of a glass product that is subject to load in a heat treatment process at a temperature not more than the glass strain point, such as chemical strengthening and coating. The present invention relates to a glass plate for heat treatment, in which the dimensionless index determined by the following formula is 1.6×10?4 or less, the average viscosity ? is log ??15.1 log Pa·s or less, the relationship between the fictive temperature Tf and the annealing point Ta is Tf?(Ta+5), and when the plate thickness h of glass is 7×10?4 m or more, the displacement at the load point during the load applying time period is 78 ?m or less: Dimensionless index=load F×load applying time period/(average viscosity ?×plate thickness h2).

Abstract: In a vehicular parking lock device, supplying a hydraulic pressure from pressure regulation of a line pressure by a linear solenoid valve to a hydraulic brake via a switching valve operated by a first solenoid valve enables a transmission to carry out a shift change. If desired that a parking lock is not operated when an engine stops, the hydraulic pressure stored under pressure in an accumulator is discharged to a drain oil passage by connecting the linear solenoid valve selectively to the drain oil passage by the first solenoid valve, thereby making it possible to prevent the hydraulic pressure stored under pressure in the accumulator from being supplied to a locking oil chamber at the other end of the hydraulic actuator. The first solenoid valve is used for both controlling the operation of the hydraulic brake and discharge of the hydraulic pressure stored under pressure in the accumulator.

Abstract: An automatic transmission of this invention includes a plurality of engaging mechanisms, and the plurality of engaging mechanisms include a mechanical engaging mechanism that functions as a brake. The mechanical engaging mechanism can switch a rotational element between a first state in which rotation is restricted only in one direction and a second state in which rotation is restricted in both directions. When switching from the first state to the second state, engagement control is started in advance for at least one of the plurality of engaging mechanisms to be set in an engaging state.

Abstract: An automatic transmission includes engagement mechanisms whose engagement states among the engagement mechanisms are changeable to achieve each of shift stages of the automatic transmission, a detector, and a determination device. The detector is configured to detect the engagement states of the engagement mechanisms. The determination device is configured to determine that abnormality has occurred in a case where the engagement states detected by the detector do not match a predetermined engagement state.

Abstract: A vehicle parking lock device includes an automatic transmission to transmit a drive force from a drive source. The automatic transmission includes a hydraulic actuator and a hydraulic circuit. The hydraulic actuator restricts rotation of a parking gear. The hydraulic circuit includes an accumulator and a line pressure controller. Pressure is accumulated in the accumulator with line pressure. Hydraulic pressure accumulated in the accumulator is supplied to the hydraulic actuator so that the hydraulic actuator is in a parking lock activation position when the drive source has stopped. Pressure in the accumulator is accumulated with the line pressure when the drive source has started. The line pressure controller boosts the line pressure to a level higher than or equal to a pressure necessary to fully fill up the accumulator in a case where a predetermined condition is satisfied after the drive source has started.

Abstract: A system and method of compensating for torque converter slip in a motor vehicle include measuring rotational speeds of an engine crankshaft and mainshaft, as well as measuring operating temperatures of a fluid associated with the motor vehicle. Engine output torque is adjusted as required by controlling some combination of ignition timing, intake air flow, fuel injection, and accessory load. A system and method for deactivating a torque compensation system retrieves a number of times the torque compensation system has been activated over a set period. If the number exceeds a predetermined number of activations, the torque compensation system is deactivated.

Abstract: A mechanical engagement mechanism has regulation states out of a first state in which at least one of a plurality of rotating elements is rotatable only in a first direction and a second state in which the at least one of the plurality of rotating elements is not rotatable in both of the first direction and a second direction opposite to the first direction and a reverse gear position is to be established. A non-traveling gear position is to be established in the first state or in the second state. A processor is to switch the regulation states of the mechanical engagement mechanism from the second state to the first state when oil pressure that is detected by an oil pressure sensor becomes lower than a predetermined oil pressure after switching a shift position from the reverse gear position to the non-traveling gear position is detected.

Abstract: A processor is to determine, based on a first revolution speed of a drive source and a second revolution speed of an input shaft, whether or not a load toward a second direction is applied to a mechanical engagement mechanism having regulation states out of a first state in which at least one of plurality of rotating elements is rotatable only in a first direction opposite to the second direction and a second state in which the at least one of the plurality of rotating elements is not rotatable in both of the first direction and the second direction. The processor is to control the first revolution speed when the load toward the second direction is applied to the mechanical engagement mechanism to reduce the load toward the second direction, and to switch the regulation states from the second state to the first state after the first revolution speed is controlled.

Abstract: A sticking condition of a lock-up clutch is judged by an oil temperature of hydraulic oil and a slip ratio of the LC. An intake air amount of an engine is increased while the LC is judged to be in a sticking condition, and the increase of the intake air amount of the engine is terminated when the judgment to be in the sticking condition is canceled. This enables to effectively prevent a rotation speed of the engine from decelerating in a range (timing) where a sticking of the LC occurs, and further prevent the rotation speed of the engine from rapidly accelerating in a range where a sticking of the LC does not occur. Therefore, decelerations of engine rotation speed due to a sticking of the lock-up clutch and rapid accelerations of engine rotation speed after the sticking has been eliminated can both be prevented.

Abstract: An automatic transmission controller for controlling an automatic transmission includes a neutral controller which is configured to perform neutral control, a neutral control permission determiner, and an engagement controller. The automatic transmission includes a plurality of planetary gear mechanisms and a plurality of engagement mechanisms. One of the plurality of engagement mechanisms is a mechanical engagement mechanism. The engagement controller is configured to allow rotation of an input shaft of the automatic transmission in a case where the neutral control determiner permits the neutral control and configured to set the plurality of engagement mechanisms including at least the mechanical engagement mechanism so as to fix an output shaft of the automatic transmission to a casing of the automatic transmission in a case where the output shaft of the automatic transmission is rotated by a wheel of a vehicle in a rotational direction such that the vehicle moves backward.

Abstract: In case of power supply loss, a parking lock is operated by moving a piston of a hydraulic actuator rightward by use of hydraulic pressure accumulated in an accumulator. If a hydraulic pressure generating source becomes unable to generate line pressure due to its failure after the power supply loss, it is desirable that the parking lock be releasable to tow a vehicle, for example. In that time, because the hydraulic pressure in the accumulator has got out via an orifice, the parking lock can be released by moving the piston in the hydraulic actuator leftward by use of a manual operation device without interruption by the hydraulic pressure accumulated in the accumulator. Because the hydraulic pressure in the accumulator is automatically released via the orifice, a complicated mechanism for enabling the manual operation device to work without interference from the hydraulic actuator becomes unnecessary.

Abstract: An automatic transmission includes an input member, a planetary gear mechanism, a plurality of engagement mechanisms, an output member, a control unit, and a switching mechanism. The control unit is able to perform a backward preparation mode (step 3) which enables the rpm of an element fixed by the switching mechanism to be predetermined rpm or less by bringing the engagement mechanism into a connected state or a fixed state when the shift position is switched from a forward range to a backward range (step 1). The control unit switches the switching mechanism from a reverse-rotation preventing state to the fixed state (step 7) after the rpm of the element becomes the predetermined rpm or less (step 5) by performing the backward preparation mode.

Abstract: An automatic transmission includes an input member, a planetary gear set, a plurality of engagement mechanisms, an output member, a switching mechanism, an engine braking determination device, a vehicle speed detector, and a controller. The controller is configured to prevent the switching mechanism from switching a mode from a fixed mode to a reverse rotation prevention mode when a shift position is changed from a reverse drive range to a forward drive range, and if the engine braking determination device determines that a vehicle is in an engine braking mode or if a travel speed of the vehicle detected by the vehicle speed detector is higher than a predetermined speed.

Abstract: An automatic transmission controller for controlling an automatic transmission includes an idling reduction controller, an idling-reduction-control permission determiner, and an engagement controller. The idling-reduction-control permission determiner is configured to determine whether or not to permit an idling reduction control. The engagement controller, in a case where the idling-reduction-control permission determiner permits the idling reduction control, is configured to allow rotation of an input shaft of an automatic transmission, and in a case where an output shaft of the automatic transmission is rotated by a wheel of a vehicle in a rotational direction such that the vehicle moves backward, is configured to set a plurality of engagement mechanisms including at least a mechanical engagement mechanism so as to fix the output shaft of the automatic transmission to a casing of the automatic transmission or so as to prevent the vehicle from moving backward.

Abstract: An automatic transmission includes an input member, a planetary gear set, a plurality of engagement mechanisms, an output member, a shift position detecting unit, an input rotational speed detecting unit, a control unit, and a switching mechanism. When a shift position is changed from a forward drive range to a reverse drive range, the control unit performs a reverse preparation mode in which a rotational speed of an element to be fixed by the switching mechanism is lower than or equal to a predetermined speed by setting an engagement mechanism in one of a connection mode and a fixed mode. Upon performing the reverse preparation mode, the control unit engages the engagement mechanism that connects the element fixed by the switching mechanism to the input member and, thereafter, engages the engagement mechanism that makes the rotational speed of the input member lower than or equal to the predetermined speed.