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Abnormality judging device for belt type continuously variable transmission

A technology for continuously variable transmission and abnormality determination, which is applied in the direction of elements with teeth, transmission control, belt/chain/gear, etc. Exceptions and other issues to achieve the effect of a simple structure

Inactive Publication Date: 2016-04-27
SUZUKI MOTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, conventional belt damage detection devices detect damage to the V-belt (more specifically, changes in rigidity due to damage to the hoop), and cannot detect abnormalities in the entire belt-type continuously variable transmission, such as an abnormal increase in the width of the V-groove or reduction, wear of the V-belt, and changes in the coefficient of friction between the V-belt and the pulley
Conventional belt damage detection devices also need to measure the driving force that brings a pair of surfaces closer to each other, and thus have disadvantages in the number of parts, assembly efficiency, and cost

Method used

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  • Abnormality judging device for belt type continuously variable transmission
  • Abnormality judging device for belt type continuously variable transmission
  • Abnormality judging device for belt type continuously variable transmission

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0034] will refer to Figures 1 to 3 An abnormality determination device for a belt-type continuously variable transmission according to a first embodiment of the present invention will be described.

[0035] The abnormality determining device 1 determines an abnormality in the belt-type continuously variable transmission 2 and instructs a user to perform maintenance or repair on the belt-type continuously variable transmission 2 .

[0036] like figure 1 As shown, the belt-type continuously variable transmission 2 according to the embodiment includes a driving pulley 6 provided on a crankshaft 5 of an engine 3, a driven pulley 8 connected to an axle 7, and wound around the driving pulley 6 and the driven pulley 8. V-belt 9.

[0037] The crankshaft 5 of the engine 3 is the drive shaft of the belt type continuously variable transmission 2 . Axle 7 is a driven wheel shaft via a driven shaft 11 on which driven wheel 8 is disposed, a gear 12 fixed to driven shaft 11 , a gear 13 ...

no. 2 example

[0083] The following will refer to Figures 4 to 6 An abnormality determination device for a belt type continuously variable transmission according to a second embodiment of the present invention will be described.

[0084] Figure 4 A system configuration of an engine including an abnormality determining device for a belt-type continuously variable transmission according to a second embodiment is shown.

[0085] In the second embodiment, elements corresponding to those in the first embodiment are assigned the same reference numerals so as to omit repeated description.

[0086] like Figure 4 As shown, the abnormality determination device 1A according to the present embodiment includes an engine speed sensor 31 , a pressure sensor 38 and a determination section 35A. The engine rotation speed sensor 31 detects the rotation speed NE of the engine 3 . The pressure sensor 38 detects the intake pressure PM of the engine 3 . The determination unit 35A determines whether the bel...

no. 3 example

[0115] The following will refer to Figure 7 and 8 An abnormality determination device for a belt type continuously variable transmission according to a third embodiment of the present invention will be described.

[0116] Figure 7 A system configuration of an engine including an abnormality determination device for a belt-type continuously variable transmission according to a third embodiment of the present invention is shown.

[0117] In the present third embodiment, elements corresponding to those in the first and second embodiments are assigned the same reference numerals so as to omit repeated description.

[0118] like Figure 7 As shown, the abnormality determination device 1B according to the present embodiment includes an engine rotation speed sensor 31 , a throttle opening sensor 33 , a pressure sensor 38 and a determination section 35B. The engine rotation speed sensor 31 detects the rotation speed NE of the engine 3 . The throttle opening sensor 33 detects th...

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Abstract

An abnormality determining device for a belt-type continuously variable transmission includes: a belt-type continuously variable transmission including a drive pulley provided on a crankshaft of an engine, an idler pulley connected to an axle shaft, and a belt wrapped around the drive pulley and the idler pulley; an engine speed sensor configured to detect a rotation speed of the engine; a throttle valve opening sensor configured to detect an opening degree of a throttle valve that adjusts an air intake of the engine; and a determining section configured to determine whether or not the belt-type continuously variable transmission is abnormal based on a magnitude of a change in the rotation speed of the engine relative to the opening degree of the throttle valve.

Description

technical field [0001] The invention relates to an abnormality judging device for a belt-type continuously variable transmission. Background technique [0002] A belt-type continuously variable transmission includes an endless V-belt and a pair of pulleys around which the V-belt is wound. One pulley is the driving pulley connected to the engine's crankshaft, while the other pulley is the driven pulley connected to the wheels. The belt-type continuously variable transmission continuously changes the transmission gear ratio by changing the contact diameter of the belt and the pulley. [0003] Each pulley includes a pair of conical surfaces, and a drive mechanism. A pair of conical surfaces face each other with a V-shaped groove disposed therebetween. A drive mechanism causes a pair of faces to approach and move away from each other to vary the width of the V-groove. One face is fixed to the rotating shaft of the pulley. The other face is movable in the direction of the li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/12
CPCF16H61/66272F16H2061/1208
Inventor 村松刚青木祐太
Owner SUZUKI MOTOR CORP