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Dual Clutch Automatic Transmission

A technology of automatic transmission and double clutch, which is applied in the direction of transmission control, elements with teeth, belt/chain/gear, etc., and can solve the problems of inability to control the speed change, inability to drive, etc.

Inactive Publication Date: 2016-01-20
AISIN AI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, even if one of the rotation speed sensors that detect the rotation speed of the input shaft fails, the speed change control cannot be performed and the vehicle cannot be driven.

Method used

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Examples

Experimental program
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Embodiment Construction

[0018] Hereinafter, a dual-clutch automatic transmission according to an embodiment of the present invention will be described based on the drawings. figure 1 It is a block diagram showing the configuration of a part of a vehicle to which the dual-clutch automatic transmission 10 is applicable. figure 1 The vehicle shown is an FF (front-engine front-wheel drive) type vehicle, which is equipped with an engine 11 driven by combustion of gasoline as an example of a prime mover, a dual-clutch automatic transmission 10, a differential device (differential transmission) 13, an ECU (Engine Control Unit: Engine Control Unit) 14 for controlling the operation of the engine 11, drive shafts 15a, 15b, drive wheels 16a, 16b (front wheels), and driven wheels (rear wheels) not shown.

[0019] The dual clutch automatic transmission 10 is disposed on a power transmission path between the engine 11 and the differential device 13 . Such as figure 2 As shown, the dual clutch 20 has a first clu...

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Abstract

The present invention relates to a dual-clutch automatic transmission. When one of the two rotation speed sensors fails, the output of the other normal rotation speed sensor can be used to calculate the rotation speed of the input shaft on the side of the failed sensor, so it is equipped with: a first input shaft rotation speed sensor 91 and a second input shaft detection The abnormality detecting parts S100 and S102 of the abnormality of the rotation speed sensor 92; the speed change control device 23, if any one of the first input shaft speed sensor and the second input shaft speed sensor detects an abnormality by the abnormality detection part, the speed change control device will When the vehicle is stopped, the shifting mechanism is controlled so that one of the odd-numbered gears and one of the even-numbered gears are simultaneously established, and when the vehicle is running, it is controlled so that only one of the odd-numbered gears and one of the even-numbered gears is driven without switching gears and a rotational speed calculation unit S110, which calculates the input shaft rotational speed sensor corresponding to the abnormally detected input shaft rotational speed sensor based on the detection output of the normal input shaft rotational speed sensor in a state where one of the odd-numbered shift speeds and one of the even-numbered shift speeds are simultaneously established. The rotational speed of the 1st input shaft or the 2nd input shaft on the side.

Description

technical field [0001] The present invention relates to a dual-clutch automatic transmission capable of calculating the rotational speed of an input shaft on the failed sensor side using a normal rotational speed sensor when one of two input shaft rotational speed sensors fails. Background technique [0002] One type of vehicle transmission is a dual-clutch automatic transmission that includes a dual clutch having two clutches, two input shafts connected to these clutches, and a rotational drive force transmitted to one of the input shafts. The first shift mechanism establishes odd-numbered shift speeds, and the second shift mechanism shifts the rotational driving force transmitted to the other input shaft to establish even-numbered shift speeds. The above-mentioned automatic transmission has the advantage that the shifting operation is performed without torque interruption by using two clutches to operate engagement switching. As such a dual-clutch automatic transmission, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/12F16H61/688
CPCF16H61/12F16H61/688F16H2061/1284F16H2061/1244F16H2061/1208
Inventor 万田秀人宫崎刚枝
Owner AISIN AI CO LTD
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