US 10,550,900 B2Granted

Clutch engagement control system

AssigneeHonda Motor Co., Ltd.

InventorsJunya Ono, Tatsuya Ryuzaki

Life of this patent

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Abstract

In a dutch engagement control system for engagement and disengagement of transmission of a rotational force between a mainshaft and a countershaft, when clutch engagement control is executed based on the determination that rotational speeds of both the shafts agree with each other, even if unexpected variations in countershaft rotational speed result from torsion occurring downstream of the countershaft in a drive system and/or the like, smooth engagement control is implemented. A control value of countershaft rotational speed at each time is updated and managed. If a threshold value is exceeded by a difference between a countershaft rotational speed actual measured value and the preceding control value, the threshold value is added to the preceding value to obtain the control value. If the threshold value does not exceed the difference, the actual measured value at this time is set as a control value without any change.

Claims7

Dependent claims

A clutch engagement control system controlling a shift clutch in a vehicle comprising a transmission and the shift clutch, the transmission being arranged between an engine and a drive wheel, the shift clutch being arranged between the engine and the transmission to engage and disengage transmission of a rotational drive force between a first shaft on the engine side and a second shaft on the drive wheel side,

wherein the clutch engagement control system includes:
a second rotational speed detector detecting a second shaft rotational speed;
and
a control rotational speed calculation unit for setting a control value of the second shaft rotational speed without exceeding a predetermined upper limit when a change of the detected second shaft rotational speed exceeds the predetermined upper limit, and for setting the detected value of the second shaft rotational speed as the control value of the second shaft rotational speed when the change of the detected second shaft rotational speed does not exceed the predetermined upper limit, and
the shift clutch is controlled based on the set control value of the second shaft rotational speed.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/448,087Filed 2 Mar 2017
Priority: JP 2016-06943830 Mar 2016
Published: US 2017/0284483 A15 Oct 2017
Granted: 4 Feb 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

F16D 48/06
External control of clutches: control by electric or electronic means, e.g. of fluid pressure
F16H 63/46
Comprising signals other than signals for actuating the final output mechanisms: signals to a clutch outside the gearbox
F16D 2500/10412
Clutch position: transmission line of a vehicle
F16D 2500/1045
Clutch type: friction clutch