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Hydraulic control device

一种油压控制、油压的技术，应用在传动装置、流体传动装置、传动装置控制等方向，能够解决次级压不够高、无法锁止离合器接合等问题

Inactive Publication Date: 2013-10-02
AISIN AW CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the device of Patent Document 1, when the rotational speed of the engine is low and the discharge pressure of the hydraulic pump is low, the lock-up clutch cannot be engaged because the secondary pressure is not high enough.

Method used

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  • Hydraulic control device
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Examples

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Effect test

Embodiment Construction

[0025] Hereinafter, examples are used to explain the manner for implementing the present invention.

[0026] figure 1 It is a configuration diagram showing a schematic configuration of a hydraulic control device 20 according to an embodiment of the present invention. In a car equipped with an engine and an automatic transmission (both not shown), the hydraulic control device 20 of the embodiment is a device for controlling the hydraulic pressure supplied to the torque converter 11, and the torque converter 11 receives The engine torque is output by the crankshaft of the engine and transmitted to the input shaft of the automatic transmission.

[0027] The torque converter 11 includes an impeller 13 connected to the crankshaft via a torque converter housing 12, a turbine 14 connected to the input shaft and arranged opposite to the impeller 13, and arranged between the impeller 13 and the turbine 14 The guide wheel 15 of the one-way clutch 15a that only allows rotation in one directi...

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PUM

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Abstract

A hydraulic control device comprising: a bypass oil passage (82) branched from a line pressure oil passage (81) and bypassing a primary regulator valve (40); and a switching unit (60a) connected to the bypass oil passage (82), an exhaust pressure oil passage (83) to which exhaust pressure from the primary regulator valve (40) is output, and a secondary pressure oil passage (84). The hydraulic control device is capable of more appropriately engaging a lock-up clutch (16) from a state in which an engine has a low rotation speed and a mechanical oil pump (31) has a low discharge pressure, by switching to a state in which the bypass oil passage (82) and the secondary pressure oil passage (84) are connected when the lock-up clutch (16) is being engaged, and switching to a state in which the exhaust pressure oil passage (83) and the secondary pressure oil passage (84) are connected when the lock-up clutch (16) is being released.

Description

Technical field [0001] The present invention relates to a hydraulic control device, and in particular, to a hydraulic control device for controlling the hydraulic pressure supplied to a hydraulic torque converter, which has a hydraulic torque converter capable of utilizing hydraulic pressure from a mechanical pump. The engaged lock-up clutch is driven by the power from the prime mover. Background technique [0002] The following device has been proposed as this kind of hydraulic control device. In order to supply hydraulic pressure to the lock-up clutch of the torque converter, the device has: a primary regulator valve, accompanied by excess pressure The oil pressure of the hydraulic pump driven by the power of the engine is adjusted to the line pressure; the secondary regulator valve (secondary regulator valve) adjusts the excess pressure discharged from the primary regulator valve to the secondary Stage pressure; relay valve (relay valve), which switches the oil path between t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/14
CPCF16H61/143
Inventor 甚野智也清水哲也石川和典
Owner AISIN AW CO LTD