Patent application number | Description | Published |
20100210413 | SHIFT CONTROLLER AND SHIFT CONTROL METHOD FOR AUTOMATIC TRANSMISSION MECHANISM - A shift controller for an automatic transmission mechanism is configured such that when the engine is in a driven state in which the engine is driven by a travel inertia force or the like and an accumulated pressure amount of the accumulator is equal to or less than a predetermined threshold, the excessive engine brake force, which is generated due to the accumulation of at least a portion of the hydraulic pressure generated from the mechanical hydraulic pump in the accumulator, is inhibited or reduced by conducting upshifting that relatively decreases the gear ratio of the automatic transmission mechanism. Therefore, the generation of the excessive engine brake force can be inhibited or reduced even when the engine is in the driven state and pressure accumulation is performed. | 08-19-2010 |
20110269583 | HYDRAULIC CONTROL APPARATUS AND HYDRAULIC CONTROL METHOD - If it is determined that a malfunction has occurred in an electrical hydraulic pump and the hydraulic fluid is not supplied to a high hydraulic pressure supplied portion from the electrical hydraulic pump, the hydraulic fluid is supplied to the high hydraulic pressure supplied portion from a mechanical hydraulic pump that usually supplies the hydraulic fluid to a low hydraulic pressure supplied portion. In this case, the hydraulic pressure that is generated by the mechanical hydraulic pump is increased by increasing the output from the engine that drives the mechanical hydraulic pump. | 11-03-2011 |
20130109516 | HYDRAULIC CONTROL SYSTEM FOR A WRAPPING TRANSMISSION | 05-02-2013 |
20130145757 | HYDRAULIC CONTROL SYSTEM - A hydraulic control system comprises: a regulator valve, which regulates a fluid pressure established by an oil pump to an operating pressure required in a control circuit; a signal pressure establishing valve, which applies a signal pressure to the regulator valve to determine a level of the fluid pressure to be established by the regulator valve; and an accumulator, which accumulates the operating pressure to be applied to the control circuit. The hydraulic control system is characterized by: an accumulator control valve, which is arranged between the accumulator and the control circuit, and which is adapted to connect the accumulator with the control circuit when opened, and to disconnect the accumulator from the control circuit when closed; and a signal pressure feeding passage, which delivers the signal pressure established by the signal pressure establishing valve to a signal pressure port of the accumulator control valve thereby actuating the accumulator control valve in accordance with the signal pressure. | 06-13-2013 |
20130305701 | HYDRAULIC CIRCUIT AND CONTROL SYSTEM THEREFOR - A hydraulic circuit and a hydraulic control system for preventing fluid leakage and power loss resulting from jamming of contaminants. A first circuit section has an accumulator for storing hydraulic pressure, and a control valve for controlling a passage for delivering fluid from the accumulator to an actuator. Fluid discharged from an oil pump is delivered continuously to a second circuit section. A first filter is disposed on a passage for delivering the fluid from the oil pump to the accumulator for the purpose of removing contaminants finer than those in the fluid to be delivered to the second circuit section from the fluid to be delivered to the accumulator. | 11-21-2013 |
20140031154 | BELT-DRIVEN CONTINUOUSLY VARIABLE TRANSMISSION - A belt-driven continuously variable transmission adapted to prevent a tilting motion of a sheave under high temperature. | 01-30-2014 |
20140035237 | SEALING STRUCTURE - A sealing structure capable of reducing oil leakage while preventing the oil from being deteriorated by a temperature rise of the oil. | 02-06-2014 |
20140182722 | SWITCH VALVE - A switch valve which is configured such that a plurality of land sections and a valley section between the land sections are formed in a valve element that advances or retreats in an axial direction according to a manual operation, a plurality of port sections opened are provided in a cylinder section in which the valve element is inserted so as to be capable of advancing and retreating, and the prescribed port sections are made to communicate with each other via the valley section according to a position of the valve element in the axial direction or be blocked by the land section, the switch valve includes a seal section that seals a space between portions on both sides in the axial direction across either one of the land sections in a liquid-tight manner. | 07-03-2014 |