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Control device for automatic continuous speed transforming transmission

A technology of variable speed transmission and control device, which is applied in the direction of transmission device control, transmission device, and components with teeth, etc., can solve the problem of shifting control of transmission device that cannot be continuously changed, and achieve the effect of improving the operation feeling.

Inactive Publication Date: 2006-11-08
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the system decelerates, the shift control valve remains in the OD position, where the shift control valve delivers a first sheave control pressure to the hydraulic cylinders of the drive wheels and a second sheave control pressure to the hydraulic cylinders of the driven wheels. pressure, but it does not perform shift control on continuously variable transmissions

Method used

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  • Control device for automatic continuous speed transforming transmission
  • Control device for automatic continuous speed transforming transmission
  • Control device for automatic continuous speed transforming transmission

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Embodiment Construction

[0013] Reference attached figure 1 , reference numeral 1 denotes an engine, and reference numeral 2 denotes a continuously variable transmission, which includes three first to third shafts 3 arranged parallel to each other 1 、3 2 and 3 3 . first axis 3 1 is connected to the engine 1 through a shock absorber 4, while the third shaft 3 3 It is connected to the drive wheels (not shown) of the locomotive through a differential gear 5 .

[0014] in the first axis 3 1 and third axis 3 3 There is a continuously variable transmission mechanism 6 between them. The continuously variable transmission mechanism 6 is rotatably supported on the first shaft 3 1 The driving wheel 60 on the top is fixed on the second shaft 3 2 The upper driven wheel 61 and the drive belt 62 extending between the two wheels 60,61 constitute. The mechanism 6 controls the internal pressure of the hydraulic cylinders 60b, 61b to press the movable pulleys 60a, 61a to change the diameter of the transmissio...

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Abstract

In a control device for an automatic continuously variable transmission having a forward-reverse selection mechanism and a belt-type continuously variable transmission mechanism, the reverse gear ratio is set to be larger than the forward gear ratio in the forward-reverse selection mechanism. The gear ratio is closer to the speed reduction side, and the PH pressure output from the first pulley control pressure and the PL pressure output from the second pulley control pressure are variably delivered to the hydraulic cylinder of the driving wheel and the driven wheel through the shift control valve One of the hydraulic cylinders and the other. The hydraulic pressure delivered from the reverse manual valve to the reverse hydraulic connection element is input into the oil chamber of the first regulator valve so that the PH pressure increases with the input hydraulic pressure.

Description

technical field [0001] The present invention relates to a control device for an automatic continuously variable transmission for power transmission through a forward-reverse selection mechanism and a belt type continuously variable transmission. Background technique [0002] There is a control device of this type of automatic continuously variable transmission in the conventional technology, and the control device of this automatic continuously variable transmission includes a manual valve for changing the forward-reverse selection mechanism, a first pulley output control pressure A regulator valve, a second regulator valve outputting a second sheave control pressure lower than the first sheave control pressure, and a hydraulic cylinder for the driven wheel and a hydraulic cylinder for the driving wheel of the continuously variable transmission mechanism can be varied in one or the other. A shift control valve that changes the gear ratio of a continuously variable transmissi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/18F16H9/00F16H61/00F16H61/662
CPCF16H61/66259F16H61/66272F16H2061/6611
Inventor 神田知幸古手川保津幡义道
Owner HONDA MOTOR CO LTD
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