| Patent application number | Description | Published |
|---|
| 20080200301 | Hydraulic pressure control device of an automatic transmission and hybrid drive device having the hydraulic pressure control device - A hydraulic control apparatus for an automatic transmission includes a forward travel engaging element, a reverse travel engaging element, a first signal electromagnetic valve, a first switching valve, and a second switching valve. The hydraulic control apparatus is structured so as to change the output state of the signal pressure of the first signal electromagnetic valve when changing from the reverse travel shift position and/or shift range to the non-travel shift position and/or shift range and when changing from the forward travel shift position and/or shift range to the non-travel shift position and/or shift range, and to enable quick draining of hydraulic pressure of the hydraulic servo of the reverse travel engaging element and hydraulic pressure of the hydraulic servo of the forward travel engaging element. | 08-21-2008 |
| 20080207375 | Hydraulic control apparatus for automatic transmission, and hybrid drive system provided with the same - A hydraulic control apparatus includes a switching device that switches between a hydraulic servo of the plurality of hydraulic servos of the first friction engaging element and a hydraulic servo of the plurality of hydraulic servos of the second friction engaging element so as to supply a control pressure from the one pressure regulating solenoid valve to each of the plurality of hydraulic servos, wherein the switching enables a control of an engagement and disengagement of the first friction engaging element and the second friction engagement element using the one pressure regulating solenoid valve. | 08-28-2008 |
| 20080236952 | Oil return structure for vehicle drive apparatus - An oil return structure for a vehicle drive apparatus includes a hydraulic control apparatus disposed below an oil supply target device to which oil for lubricating and cooling is supplied; and an oil pan that retains the oil that is supplied to the oil supply target device is provided below the hydraulic control apparatus, wherein a bypass oil path is formed in a body of the hydraulic control apparatus, the bypass oil path being structured in order to guide the oil from the oil supply target device from an upper surface of the body, inside the body and then discharge the oil from a side surface of the body. | 10-02-2008 |
| 20080256943 | Hydraulic control device - A hydraulic control device includes an oil pan; an oil pump; a strainer; a pressure regulating valve; an oil cooler; a cooler bypass valve with an input port that is connected with a cooler supply oil passage through which the hydraulic oil to be supplied to the oil cooler flows, wherein the input port is communicatively connected with an output port when the hydraulic pressure of the hydraulic oil within the cooler supply oil passage is equal to or greater than a predetermined valve opening pressure; and a cooler bypass oil passage that connects the output port of the cooler bypass valve with an intake oil passage between the strainer and the intake port of the oil pump. | 10-23-2008 |
| 20080314658 | Hybrid drive unit and running control method for hybrid drive unit - A hybrid drive system includes an engine; at least one rotating electric machine, wherein the engine and the at least one rotating electric machine are capable of driving a vehicle; and a controller. The controller starts a load limit control that limits a load exerted to the rotating electric machine when a temperature of the rotating electric machine exceeds a load limit start temperature; detects a loading state or a towing state of the vehicle; and determines the load limit start temperature based on the loading state or the towing state detected. | 12-25-2008 |
