Control device for selectable one-way clutch

A technology of one-way clutches and control devices, which is applied in one-way clutches, clutches, mechanical equipment, etc., can solve problems such as support parts impacting support part abnormalities, and achieve the effect of preventing failures and suppressing abnormalities

Active Publication Date: 2019-06-11
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when a high rotational speed difference is maintained in the overtravel state or the ratchet state, it is possible to continue to exert a large impact on the support and make the support abnormal.

Method used

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  • Control device for selectable one-way clutch
  • Control device for selectable one-way clutch
  • Control device for selectable one-way clutch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Figure 4 It is a graph showing the relationship between the vehicle speed V and the rotation speed Ns of the SOWC 4 in the first embodiment. In addition, in Figure 4 Among them, Ne is the speed of the engine 1 , Ne_idle is the idle speed of the engine 1 , Ne_start is the maximum speed of the engine 1 when the engine starts, and Ne_max is the maximum speed of the engine 1 . In addition, in Figure 4 Among them, Ns is the speed of SOWC4, Ns_ratchet is the minimum speed of SOWC4 that can avoid engagement even if the ratchet state is maintained, Ns_infinite - It is the minimum rotational speed of SOWC4 that can ensure an infinite life of the support 42 for an infinite period without damage or a semi-infinite life of the support 42 as long as the life of the vehicle even if the overtravel state continues. In addition, in Figure 4 in, V 1 is the vehicle speed when the rotation speed Ns of the SOWC 4 is 0 [rpm] and the rotation speed Ne of the engine 1 is the maximum r...

Embodiment 2

[0086] Image 6 It is a graph showing the relationship between the vehicle speed V and the rotation speed Ns of the SOWC 4 in the second embodiment. In addition, in Image 6 In, Ns_infinite + It is the maximum rotation speed of SOWC4 that can ensure infinite life or semi-infinite life even if the ratchet state is maintained. In addition, in Image 6 in, V 3 is the speed Ns of SOWC4 is Ns_infinite + In addition, the rotational speed Ne of the engine 1 is the vehicle speed at the idle rotational speed Ne_idle.

[0087] Figure 7 is shown based on Image 6 A flow chart of failure control in Embodiment 2 implemented based on the relationship between the vehicle speed V and the rotation speed Ns of the SOWC4 shown. When the vehicle is running, execute this function repeatedly every specified short time. Figure 7 The routine for fault control is shown.

[0088] First, when running in the released state of the SOWC4, the electronic control unit 18 determines whether the se...

Embodiment 3

[0095] Figure 8 It is a graph showing the relationship between the vehicle speed V and the rotation speed Ns of the SOWC4 in the third embodiment. In addition, in Figure 8 In, Ns_finite + It is the maximum rotational speed of the SOWC 4 that can ensure a limited life span in which the support 42 is not damaged for a limited period of time even if the ratchet state is maintained. Figure 9 is shown based on Figure 8A flow chart of failure control in Embodiment 3 implemented based on the shown relationship between the vehicle speed V and the rotational speed Ns of the SOWC4. When the vehicle is running, execute this function repeatedly every specified short time. Figure 9 The routine for fault control is shown.

[0096] First, when running in the released state of the SOWC4, the electronic control unit 18 determines whether the sensor 49 has detected an unexpected stroke of the actuator 48 caused by an unexpected operation of the selector plate 46 (step S41). When it i...

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PUM

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Abstract

A control device for a selectable one-way clutch includes a pocket plate; a notch plate rotating relative to the pocket plate; a selector plate between the pocket plate and the notch plate rotating coaxially with the notch plate to change between a state allowing engagement members to pass through respective openings and to stand up from a side close to the pocket plate toward a side close to thenotch plate and a state allowing the housing recesses to house the engagement members; and a motion detection unit detecting a motion of the selector plate. Further, when an unintended motion of the selector plate is detected, the pocket plate and the notch plate to rotate differentially at a rotation speed equal to or less than a predetermined absolute value, and the selectable one-way clutch tofall into a state of ratchet or into a state of overrun.

Description

technical field [0001] The invention relates to a control device for a selectable one-way clutch. Background technique [0002] Patent Document 1 discloses a selectable one-way clutch having a support member as an engaging piece. When a sensor detects a failure of an unexpected operation of the selector plate, the following control is performed to suppress the selectable one-way clutch. Misengagement of the clutch. That is, at low vehicle speeds, the selectable one-way clutch is controlled to a rotational speed such that the pocket plate and the notch plate are positively differentially rotated to maintain the support from engaging the engagement recesses of the notch plate. Ratchet state. In addition, at high vehicle speeds, the selectable one-way clutch is controlled to a rotational speed such that the overtravel state in which the support is not engaged with the engaging recess is maintained by causing the pocket plate and the notch plate to rotate negatively ( Japanes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D41/12
CPCF16D48/06F16D2500/10493F16D41/125F16D41/14F16D41/12F16D48/10F16D41/084
Inventor 黑崎祐树小川裕之柴田宽之板垣宪治加藤浩一
Owner TOYOTA JIDOSHA KK
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